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USB/Thunderbolt patches for 5.9-rc1

Browse Source 
Here is the large set of USB and Thunderbolt patches for 5.9-rc1.
 
 Nothing really magic/major in here, just lots of little changes and
 updates:
 	- clean up language usages in USB core and some drivers
 	- Thunderbolt driver updates and additions
 	- USB Gadget driver updates
 	- dwc3 driver updates (like always...)
 	- build with "W=1" warning fixups
 	- mtu3 driver updates
 	- usb-serial driver updates and device ids
 	- typec additions and updates for new hardware
 	- xhci debug code updates for future platforms
 	- cdns3 driver updates
 	- lots of other minor driver updates and fixes and cleanups
 
 All of these have been in linux-next for a while with no reported
 issues.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'usb-5.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb

Pull USB/Thunderbolt updates from Greg KH:
 "Here is the large set of USB and Thunderbolt patches for 5.9-rc1.

  Nothing really magic/major in here, just lots of little changes and
  updates:

   - clean up language usages in USB core and some drivers

   - Thunderbolt driver updates and additions

   - USB Gadget driver updates

   - dwc3 driver updates (like always...)

   - build with "W=1" warning fixups

   - mtu3 driver updates

   - usb-serial driver updates and device ids

   - typec additions and updates for new hardware

   - xhci debug code updates for future platforms

   - cdns3 driver updates

   - lots of other minor driver updates and fixes and cleanups

  All of these have been in linux-next for a while with no reported
  issues"

* tag 'usb-5.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (330 commits)
  usb: common: usb-conn-gpio: Register charger
  usb: mtu3: simplify mtu3_req_complete()
  usb: mtu3: clear dual mode of u3port when disable device
  usb: mtu3: use MTU3_EP_WEDGE flag
  usb: mtu3: remove useless member @busy in mtu3_ep struct
  usb: mtu3: remove repeated error log
  usb: mtu3: add ->udc_set_speed()
  usb: mtu3: introduce a funtion to check maximum speed
  usb: mtu3: clear interrupts status when disable interrupts
  usb: mtu3: reinitialize CSR registers
  usb: mtu3: fix macro for maximum number of packets
  usb: mtu3: remove unnecessary pointer checks
  usb: xhci: Fix ASMedia ASM1142 DMA addressing
  usb: xhci: define IDs for various ASMedia host controllers
  usb: musb: convert to devm_platform_ioremap_resource_byname
  usb: gadget: tegra-xudc: convert to devm_platform_ioremap_resource_byname
  usb: gadget: r8a66597: convert to devm_platform_ioremap_resource_byname
  usb: dwc3: convert to devm_platform_ioremap_resource_byname
  usb: cdns3: convert to devm_platform_ioremap_resource_byname
  usb: phy: am335x: convert to devm_platform_ioremap_resource_byname
  ...
This commit is contained in:
Linus Torvalds 2020-08-05 12:13:10 -07:00
commit ecfd7940b8
297 changed files with 7848 additions and 3090 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

57
Documentation/ABI/testing/sysfs-bus-thunderbolt
View File

@ -178,11 +178,18 @@ KernelVersion: 4.13
Contact: thunderbolt-software@lists.01.org
Description: When new NVM image is written to the non-active NVM
area (through non_activeX NVMem device), the
authentication procedure is started by writing 1 to
this file. If everything goes well, the device is
authentication procedure is started by writing to
this file.
If everything goes well, the device is
restarted with the new NVM firmware. If the image
verification fails an error code is returned instead.
This file will accept writing values "1" or "2"
- Writing "1" will flush the image to the storage
area and authenticate the image in one action.
- Writing "2" will run some basic validation on the image
and flush it to the storage area.
When read holds status of the last authentication
operation if an error occurred during the process. This
is directly the status value from the DMA configuration
@ -236,3 +243,49 @@ KernelVersion: 4.15
Contact: thunderbolt-software@lists.01.org
Description: This contains XDomain service specific settings as
bitmask. Format: %x
What: /sys/bus/thunderbolt/devices/<device>:<port>.<index>/device
Date: Oct 2020
KernelVersion: v5.9
Contact: Mika Westerberg <mika.westerberg@linux.intel.com>
Description: Retimer device identifier read from the hardware.
What: /sys/bus/thunderbolt/devices/<device>:<port>.<index>/nvm_authenticate
Date: Oct 2020
KernelVersion: v5.9
Contact: Mika Westerberg <mika.westerberg@linux.intel.com>
Description: When new NVM image is written to the non-active NVM
area (through non_activeX NVMem device), the
authentication procedure is started by writing 1 to
this file. If everything goes well, the device is
restarted with the new NVM firmware. If the image
verification fails an error code is returned instead.
When read holds status of the last authentication
operation if an error occurred during the process.
Format: %x.
What: /sys/bus/thunderbolt/devices/<device>:<port>.<index>/nvm_version
Date: Oct 2020
KernelVersion: v5.9
Contact: Mika Westerberg <mika.westerberg@linux.intel.com>
Description: Holds retimer NVM version number. Format: %x.%x, major.minor.
What: /sys/bus/thunderbolt/devices/<device>:<port>.<index>/vendor
Date: Oct 2020
KernelVersion: v5.9
Contact: Mika Westerberg <mika.westerberg@linux.intel.com>
Description: Retimer vendor identifier read from the hardware.
What: /sys/bus/thunderbolt/devices/.../nvm_authenticate_on_disconnect
Date: Oct 2020
KernelVersion: v5.9
Contact: Mario Limonciello <mario.limonciello@dell.com>
Description: For supported devices, automatically authenticate the new Thunderbolt
image when the device is disconnected from the host system.
This file will accept writing values "1" or "2"
- Writing "1" will flush the image to the storage
area and prepare the device for authentication on disconnect.
- Writing "2" will run some basic validation on the image
and flush it to the storage area.

11
Documentation/admin-guide/thunderbolt.rst
View File

@ -173,8 +173,8 @@ following ``udev`` rule::
ACTION=="add", SUBSYSTEM=="thunderbolt", ATTRS{iommu_dma_protection}=="1", ATTR{authorized}=="0", ATTR{authorized}="1"
Upgrading NVM on Thunderbolt device or host
-------------------------------------------
Upgrading NVM on Thunderbolt device, host or retimer
----------------------------------------------------
Since most of the functionality is handled in firmware running on a
host controller or a device, it is important that the firmware can be
upgraded to the latest where possible bugs in it have been fixed.
@ -185,9 +185,10 @@ for some machines:
`Thunderbolt Updates <https://thunderbolttechnology.net/updates>`_
Before you upgrade firmware on a device or host, please make sure it is a
suitable upgrade. Failing to do that may render the device (or host) in a
state where it cannot be used properly anymore without special tools!
Before you upgrade firmware on a device, host or retimer, please make
sure it is a suitable upgrade. Failing to do that may render the device
in a state where it cannot be used properly anymore without special
tools!
Host NVM upgrade on Apple Macs is not supported.

4
Documentation/devicetree/bindings/usb/brcm,bdc.txt
View File

@ -4,7 +4,7 @@ Broadcom USB Device Controller (BDC)
Required properties:
- compatible: must be one of:
"brcm,bdc-v0.16"
"brcm,bdc-udc-v2"
"brcm,bdc"
- reg: the base register address and length
- interrupts: the interrupt line for this controller
@ -21,7 +21,7 @@ On Broadcom STB platforms, these properties are required:
Example:
bdc@f0b02000 {
compatible = "brcm,bdc-v0.16";
compatible = "brcm,bdc-udc-v2";
reg = <0xf0b02000 0xfc4>;
interrupts = <0x0 0x60 0x0>;
phys = <&usbphy_0 0x0>;

6
Documentation/devicetree/bindings/usb/ingenic,jz4770-phy.yaml
View File

@ -4,10 +4,11 @@
$id: http://devicetree.org/schemas/usb/ingenic,jz4770-phy.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Ingenic JZ4770 USB PHY devicetree bindings
title: Ingenic SoCs USB PHY devicetree bindings
maintainers:
- Paul Cercueil <paul@crapouillou.net>
- 周琰杰 (Zhou Yanjie) <zhouyanjie@wanyeetech.com>
properties:
$nodename:
@ -16,6 +17,9 @@ properties:
compatible:
enum:
- ingenic,jz4770-phy
- ingenic,jz4780-phy
- ingenic,x1000-phy
- ingenic,x1830-phy
reg:
maxItems: 1

51
Documentation/devicetree/bindings/usb/ti,keystone-dwc3.yaml
View File

@ -11,22 +11,36 @@ maintainers:
properties:
compatible:
oneOf:
- const: "ti,keystone-dwc3"
- const: "ti,am654-dwc3"
items:
- enum:
- ti,keystone-dwc3
- ti,am654-dwc3
reg:
maxItems: 1
description: Address and length of the register set for the USB subsystem on
the SOC.
'#address-cells':
const: 1
'#size-cells':
const: 1
ranges: true
interrupts:
maxItems: 1
description: The irq number of this device that is used to interrupt the MPU.
clocks:
description: Clock ID for USB functional clock.
minItems: 1
maxItems: 2
assigned-clocks:
minItems: 1
maxItems: 2
assigned-clock-parents:
minItems: 1
maxItems: 2
power-domains:
description: Should contain a phandle to a PM domain provider node
@ -42,33 +56,42 @@ properties:
phy-names:
items:
- const: "usb3-phy"
- const: usb3-phy
dwc3:
dma-coherent: true
dma-ranges: true
patternProperties:
"usb@[a-f0-9]+$":
type: object
description: This is the node representing the DWC3 controller instance
Documentation/devicetree/bindings/usb/dwc3.txt
required:
- compatible
- reg
- "#address-cells"
- "#size-cells"
- ranges
- interrupts
- clocks
additionalProperties: false
examples:
- |
#include <dt-bindings/interrupt-controller/arm-gic.h>
usb: usb@2680000 {
dwc3@2680000 {
compatible = "ti,keystone-dwc3";
#address-cells = <1>;
#size-cells = <1>;
reg = <0x2680000 0x10000>;
clocks = <&clkusb>;
clock-names = "usb";
interrupts = <GIC_SPI 393 IRQ_TYPE_EDGE_RISING>;
ranges;
dwc3@2690000 {
usb@2690000 {
compatible = "synopsys,dwc3";
reg = <0x2690000 0x70000>;
interrupts = <GIC_SPI 393 IRQ_TYPE_EDGE_RISING>;

2
Documentation/driver-api/usb/URB.rst
View File

@ -240,7 +240,7 @@ How to do isochronous (ISO) transfers?
======================================
Besides the fields present on a bulk transfer, for ISO, you also
also have to set ``urb->interval`` to say how often to make transfers; it's
have to set ``urb->interval`` to say how often to make transfers; it's
often one per frame (which is once every microframe for highspeed devices).
The actual interval used will be a power of two that's no bigger than what
you specify. You can use the :c:func:`usb_fill_int_urb` macro to fill

2
Documentation/usb/gadget_hid.rst
View File

@ -11,7 +11,7 @@ and HID reports can be sent/received through I/O on the
/dev/hidgX character devices.
For more details about HID, see the developer page on
http://www.usb.org/developers/hidpage/
https://www.usb.org/developers/hidpage/
Configuration
=============

10
Documentation/usb/gadget_multi.rst
View File

@ -142,7 +142,7 @@ Footnotes
=========
[1] Remote Network Driver Interface Specification,
[[http://msdn.microsoft.com/en-us/library/ee484414.aspx]].
[[https://msdn.microsoft.com/en-us/library/ee484414.aspx]].
[2] Communications Device Class Abstract Control Model, spec for this
and other USB classes can be found at
@ -150,9 +150,9 @@ and other USB classes can be found at
[3] CDC Ethernet Control Model.
[4] [[http://msdn.microsoft.com/en-us/library/ff537109(v=VS.85).aspx]]
[4] [[https://msdn.microsoft.com/en-us/library/ff537109(v=VS.85).aspx]]
[5] [[http://msdn.microsoft.com/en-us/library/ff539234(v=VS.85).aspx]]
[5] [[https://msdn.microsoft.com/en-us/library/ff539234(v=VS.85).aspx]]
[6] To put it in some other nice words, Windows failed to respond to
any user input.
@ -160,6 +160,6 @@ any user input.
[7] You may find [[http://www.cygnal.org/ubb/Forum9/HTML/001050.html]]
useful.
[8] http://www.nirsoft.net/utils/usb_devices_view.html
[8] https://www.nirsoft.net/utils/usb_devices_view.html
[9] [[http://msdn.microsoft.com/en-us/library/ff570620.aspx]]
[9] [[https://msdn.microsoft.com/en-us/library/ff570620.aspx]]

2
Documentation/usb/linux.inf
View File

@ -1,5 +1,5 @@
; Based on template INF file found at
; <http://msdn.microsoft.com/en-us/library/ff570620.aspx>
; <https://msdn.microsoft.com/en-us/library/ff570620.aspx>
; which was:
; Copyright (c) Microsoft Corporation
; and released under the MLPL as found at:

7
MAINTAINERS
View File

@ -7013,6 +7013,13 @@ L: linuxppc-dev@lists.ozlabs.org
S: Maintained
F: drivers/usb/gadget/udc/fsl*
FREESCALE USB PHY DRIVER
M: Ran Wang <ran.wang_1@nxp.com>
L: linux-usb@vger.kernel.org
L: linuxppc-dev@lists.ozlabs.org
S: Maintained
F: drivers/usb/phy/phy-fsl-usb*
FREEVXFS FILESYSTEM
M: Christoph Hellwig <hch@infradead.org>
S: Maintained

17
arch/arm/mach-omap1/board-osk.c
View File

@ -26,6 +26,7 @@
* 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <linux/gpio.h>
#include <linux/gpio/machine.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/platform_device.h>
@ -55,6 +56,9 @@
#include "common.h"
/* Name of the GPIO chip used by the OMAP for GPIOs 0..15 */
#define OMAP_GPIO_LABEL "gpio-0-15"
/* At OMAP5912 OSK the Ethernet is directly connected to CS1 */
#define OMAP_OSK_ETHR_START 0x04800300
@ -240,7 +244,9 @@ static struct tps65010_board tps_board = {
static struct i2c_board_info __initdata osk_i2c_board_info[] = {
{
/* This device will get the name "i2c-tps65010" */
I2C_BOARD_INFO("tps65010", 0x48),
.dev_name = "tps65010",
.platform_data = &tps_board,
},
@ -278,6 +284,16 @@ static void __init osk_init_cf(void)
irq_set_irq_type(gpio_to_irq(62), IRQ_TYPE_EDGE_FALLING);
}
static struct gpiod_lookup_table osk_usb_gpio_table = {
.dev_id = "ohci",
.table = {
/* Power GPIO on the I2C-attached TPS65010 */
GPIO_LOOKUP("i2c-tps65010", 1, "power", GPIO_ACTIVE_HIGH),
GPIO_LOOKUP(OMAP_GPIO_LABEL, 9, "overcurrent",
GPIO_ACTIVE_HIGH),
},
};
static struct omap_usb_config osk_usb_config __initdata = {
/* has usb host connector (A) ... for development it can also
* be used, with a NONSTANDARD gender-bending cable/dongle, as
@ -581,6 +597,7 @@ static void __init osk_init(void)
l |= (3 << 1);
omap_writel(l, USB_TRANSCEIVER_CTRL);
gpiod_add_lookup_table(&osk_usb_gpio_table);
omap1_usb_init(&osk_usb_config);
/* irq for tps65010 chip */

2
arch/mips/configs/fuloong2e_defconfig
View File

@ -159,7 +159,7 @@ CONFIG_USB_KBD=y
CONFIG_USB_MOUSE=y
CONFIG_USB=y
CONFIG_USB_ANNOUNCE_NEW_DEVICES=y
CONFIG_USB_OTG_WHITELIST=y
CONFIG_USB_OTG_PRODUCTLIST=y
CONFIG_USB_WUSB_CBAF=m
CONFIG_USB_C67X00_HCD=m
CONFIG_USB_EHCI_HCD=y

2
arch/mips/configs/gcw0_defconfig
View File

@ -96,7 +96,7 @@ CONFIG_SND_SIMPLE_CARD=y
CONFIG_USB_CONN_GPIO=y
CONFIG_USB=y
CONFIG_USB_OTG=y
CONFIG_USB_OTG_BLACKLIST_HUB=y
CONFIG_USB_OTG_DISABLE_EXTERNAL_HUB=y
CONFIG_USB_OHCI_HCD=y
CONFIG_USB_OHCI_HCD_PLATFORM=y
CONFIG_USB_MUSB_HDRC=y

2
arch/mips/configs/lemote2f_defconfig
View File

@ -207,7 +207,7 @@ CONFIG_ZEROPLUS_FF=y
CONFIG_USB_HIDDEV=y
CONFIG_USB=y
CONFIG_USB_DYNAMIC_MINORS=y
CONFIG_USB_OTG_WHITELIST=y
CONFIG_USB_OTG_PRODUCTLIST=y
CONFIG_USB_MON=y
CONFIG_USB_EHCI_HCD=y
CONFIG_USB_EHCI_ROOT_HUB_TT=y

4
drivers/net/thunderbolt.c
View File

@ -866,8 +866,8 @@ static int tbnet_open(struct net_device *dev)
eof_mask = BIT(TBIP_PDF_FRAME_END);
ring = tb_ring_alloc_rx(xd->tb->nhi, -1, TBNET_RING_SIZE,
RING_FLAG_FRAME | RING_FLAG_E2E, sof_mask,
eof_mask, tbnet_start_poll, net);
RING_FLAG_FRAME, sof_mask, eof_mask,
tbnet_start_poll, net);
if (!ring) {
netdev_err(dev, "failed to allocate Rx ring\n");
tb_ring_free(net->tx_ring.ring);

9
drivers/thunderbolt/Kconfig
View File

@ -8,10 +8,15 @@ menuconfig USB4
select CRYPTO_HASH
select NVMEM
help
USB4 and Thunderbolt driver. USB4 is the public speficiation
based on Thunderbolt 3 protocol. This driver is required if
USB4 and Thunderbolt driver. USB4 is the public specification
based on the Thunderbolt 3 protocol. This driver is required if
you want to hotplug Thunderbolt and USB4 compliant devices on
Apple hardware or on PCs with Intel Falcon Ridge or newer.
To compile this driver a module, choose M here. The module will be
called thunderbolt.
config USB4_KUNIT_TEST
bool "KUnit tests"
depends on KUNIT=y
depends on USB4=y

3
drivers/thunderbolt/Makefile
View File

@ -2,3 +2,6 @@
obj-${CONFIG_USB4} := thunderbolt.o
thunderbolt-objs := nhi.o nhi_ops.o ctl.o tb.o switch.o cap.o path.o tunnel.o eeprom.o
thunderbolt-objs += domain.o dma_port.o icm.o property.o xdomain.o lc.o tmu.o usb4.o
thunderbolt-objs += nvm.o retimer.o quirks.o
obj-${CONFIG_USB4_KUNIT_TEST} += test.o

2
drivers/thunderbolt/domain.c
View File

@ -812,6 +812,6 @@ void tb_domain_exit(void)
{
bus_unregister(&tb_bus_type);
ida_destroy(&tb_domain_ida);
tb_switch_exit();
tb_nvm_exit();
tb_xdomain_exit();
}

1
drivers/thunderbolt/eeprom.c
View File

@ -599,6 +599,7 @@ parse:
sw->uid = header->uid;
sw->vendor = header->vendor_id;
sw->device = header->model_id;
tb_check_quirks(sw);
crc = tb_crc32(sw->drom + TB_DROM_DATA_START, header->data_len);
if (crc != header->data_crc32) {

14
drivers/thunderbolt/lc.c
View File

@ -366,3 +366,17 @@ int tb_lc_dp_sink_dealloc(struct tb_switch *sw, struct tb_port *in)
tb_port_dbg(in, "sink %d de-allocated\n", sink);
return 0;
}
/**
* tb_lc_force_power() - Forces LC to be powered on
* @sw: Thunderbolt switch
*
* This is useful to let authentication cycle pass even without
* a Thunderbolt link present.
*/
int tb_lc_force_power(struct tb_switch *sw)
{
u32 in = 0xffff;
return tb_sw_write(sw, &in, TB_CFG_SWITCH, TB_LC_POWER, 1);
}

30
drivers/thunderbolt/nhi.c
View File

@ -24,12 +24,7 @@
#define RING_TYPE(ring) ((ring)->is_tx ? "TX ring" : "RX ring")
/*
* Used to enable end-to-end workaround for missing RX packets. Do not
* use this ring for anything else.
*/
#define RING_E2E_UNUSED_HOPID 2
#define RING_FIRST_USABLE_HOPID TB_PATH_MIN_HOPID
#define RING_FIRST_USABLE_HOPID 1
/*
* Minimal number of vectors when we use MSI-X. Two for control channel
@ -440,7 +435,7 @@ static int nhi_alloc_hop(struct tb_nhi *nhi, struct tb_ring *ring)
/*
* Automatically allocate HopID from the non-reserved
* range 8 .. hop_count - 1.
* range 1 .. hop_count - 1.
*/
for (i = RING_FIRST_USABLE_HOPID; i < nhi->hop_count; i++) {
if (ring->is_tx) {
@ -496,10 +491,6 @@ static struct tb_ring *tb_ring_alloc(struct tb_nhi *nhi, u32 hop, int size,
dev_dbg(&nhi->pdev->dev, "allocating %s ring %d of size %d\n",
transmit ? "TX" : "RX", hop, size);
/* Tx Ring 2 is reserved for E2E workaround */
if (transmit && hop == RING_E2E_UNUSED_HOPID)
return NULL;
ring = kzalloc(sizeof(*ring), GFP_KERNEL);
if (!ring)
return NULL;
@ -614,19 +605,6 @@ void tb_ring_start(struct tb_ring *ring)
flags = RING_FLAG_ENABLE | RING_FLAG_RAW;
}
if (ring->flags & RING_FLAG_E2E && !ring->is_tx) {
u32 hop;
/*
* In order not to lose Rx packets we enable end-to-end
* workaround which transfers Rx credits to an unused Tx
* HopID.
*/
hop = RING_E2E_UNUSED_HOPID << REG_RX_OPTIONS_E2E_HOP_SHIFT;
hop &= REG_RX_OPTIONS_E2E_HOP_MASK;
flags |= hop | RING_FLAG_E2E_FLOW_CONTROL;
}
ring_iowrite64desc(ring, ring->descriptors_dma, 0);
if (ring->is_tx) {
ring_iowrite32desc(ring, ring->size, 12);
@ -1123,9 +1101,7 @@ static int nhi_probe(struct pci_dev *pdev, const struct pci_device_id *id)
/* cannot fail - table is allocated bin pcim_iomap_regions */
nhi->iobase = pcim_iomap_table(pdev)[0];
nhi->hop_count = ioread32(nhi->iobase + REG_HOP_COUNT) & 0x3ff;
if (nhi->hop_count != 12 && nhi->hop_count != 32)
dev_warn(&pdev->dev, "unexpected hop count: %d\n",
nhi->hop_count);
dev_dbg(&pdev->dev, "total paths: %d\n", nhi->hop_count);
nhi->tx_rings = devm_kcalloc(&pdev->dev, nhi->hop_count,
sizeof(*nhi->tx_rings), GFP_KERNEL);

170
drivers/thunderbolt/nvm.c Normal file
View File

@ -0,0 +1,170 @@
// SPDX-License-Identifier: GPL-2.0
/*
* NVM helpers
*
* Copyright (C) 2020, Intel Corporation
* Author: Mika Westerberg <mika.westerberg@linux.intel.com>
*/
#include <linux/idr.h>
#include <linux/slab.h>
#include <linux/vmalloc.h>
#include "tb.h"
static DEFINE_IDA(nvm_ida);
/**
* tb_nvm_alloc() - Allocate new NVM structure
* @dev: Device owning the NVM
*
* Allocates new NVM structure with unique @id and returns it. In case
* of error returns ERR_PTR().
*/
struct tb_nvm *tb_nvm_alloc(struct device *dev)
{
struct tb_nvm *nvm;
int ret;
nvm = kzalloc(sizeof(*nvm), GFP_KERNEL);
if (!nvm)
return ERR_PTR(-ENOMEM);
ret = ida_simple_get(&nvm_ida, 0, 0, GFP_KERNEL);
if (ret < 0) {
kfree(nvm);
return ERR_PTR(ret);
}
nvm->id = ret;
nvm->dev = dev;
return nvm;
}
/**
* tb_nvm_add_active() - Adds active NVMem device to NVM
* @nvm: NVM structure
* @size: Size of the active NVM in bytes
* @reg_read: Pointer to the function to read the NVM (passed directly to the
* NVMem device)
*
* Registers new active NVmem device for @nvm. The @reg_read is called
* directly from NVMem so it must handle possible concurrent access if
* needed. The first parameter passed to @reg_read is @nvm structure.
* Returns %0 in success and negative errno otherwise.
*/
int tb_nvm_add_active(struct tb_nvm *nvm, size_t size, nvmem_reg_read_t reg_read)
{
struct nvmem_config config;
struct nvmem_device *nvmem;
memset(&config, 0, sizeof(config));
config.name = "nvm_active";
config.reg_read = reg_read;
config.read_only = true;
config.id = nvm->id;
config.stride = 4;
config.word_size = 4;
config.size = size;
config.dev = nvm->dev;
config.owner = THIS_MODULE;
config.priv = nvm;
nvmem = nvmem_register(&config);
if (IS_ERR(nvmem))
return PTR_ERR(nvmem);
nvm->active = nvmem;
return 0;
}
/**
* tb_nvm_write_buf() - Write data to @nvm buffer
* @nvm: NVM structure
* @offset: Offset where to write the data
* @val: Data buffer to write
* @bytes: Number of bytes to write
*
* Helper function to cache the new NVM image before it is actually
* written to the flash. Copies @bytes from @val to @nvm->buf starting
* from @offset.
*/
int tb_nvm_write_buf(struct tb_nvm *nvm, unsigned int offset, void *val,
size_t bytes)
{
if (!nvm->buf) {
nvm->buf = vmalloc(NVM_MAX_SIZE);
if (!nvm->buf)
return -ENOMEM;
}
nvm->flushed = false;
nvm->buf_data_size = offset + bytes;
memcpy(nvm->buf + offset, val, bytes);
return 0;
}
/**
* tb_nvm_add_non_active() - Adds non-active NVMem device to NVM
* @nvm: NVM structure
* @size: Size of the non-active NVM in bytes
* @reg_write: Pointer to the function to write the NVM (passed directly
* to the NVMem device)
*
* Registers new non-active NVmem device for @nvm. The @reg_write is called
* directly from NVMem so it must handle possible concurrent access if
* needed. The first parameter passed to @reg_write is @nvm structure.
* Returns %0 in success and negative errno otherwise.
*/
int tb_nvm_add_non_active(struct tb_nvm *nvm, size_t size,
nvmem_reg_write_t reg_write)
{
struct nvmem_config config;
struct nvmem_device *nvmem;
memset(&config, 0, sizeof(config));
config.name = "nvm_non_active";
config.reg_write = reg_write;
config.root_only = true;
config.id = nvm->id;
config.stride = 4;
config.word_size = 4;
config.size = size;
config.dev = nvm->dev;
config.owner = THIS_MODULE;
config.priv = nvm;
nvmem = nvmem_register(&config);
if (IS_ERR(nvmem))
return PTR_ERR(nvmem);
nvm->non_active = nvmem;
return 0;
}
/**
* tb_nvm_free() - Release NVM and its resources
* @nvm: NVM structure to release
*
* Releases NVM and the NVMem devices if they were registered.
*/
void tb_nvm_free(struct tb_nvm *nvm)
{
if (nvm) {
if (nvm->non_active)
nvmem_unregister(nvm->non_active);
if (nvm->active)
nvmem_unregister(nvm->active);
vfree(nvm->buf);
ida_simple_remove(&nvm_ida, nvm->id);
}
kfree(nvm);
}
void tb_nvm_exit(void)
{
ida_destroy(&nvm_ida);
}

38
drivers/thunderbolt/path.c
View File

@ -229,7 +229,7 @@ struct tb_path *tb_path_alloc(struct tb *tb, struct tb_port *src, int src_hopid,
struct tb_port *dst, int dst_hopid, int link_nr,
const char *name)
{
struct tb_port *in_port, *out_port;
struct tb_port *in_port, *out_port, *first_port, *last_port;
int in_hopid, out_hopid;
struct tb_path *path;
size_t num_hops;
@ -239,12 +239,23 @@ struct tb_path *tb_path_alloc(struct tb *tb, struct tb_port *src, int src_hopid,
if (!path)
return NULL;
/*
* Number of hops on a path is the distance between the two
* switches plus the source adapter port.
*/
num_hops = abs(tb_route_length(tb_route(src->sw)) -
tb_route_length(tb_route(dst->sw))) + 1;
first_port = last_port = NULL;
i = 0;
tb_for_each_port_on_path(src, dst, in_port) {
if (!first_port)
first_port = in_port;
last_port = in_port;
i++;
}
/* Check that src and dst are reachable */
if (first_port != src || last_port != dst) {
kfree(path);
return NULL;
}
/* Each hop takes two ports */
num_hops = i / 2;
path->hops = kcalloc(num_hops, sizeof(*path->hops), GFP_KERNEL);
if (!path->hops) {
@ -559,21 +570,20 @@ bool tb_path_is_invalid(struct tb_path *path)
}
/**
* tb_path_switch_on_path() - Does the path go through certain switch
* tb_path_port_on_path() - Does the path go through certain port
* @path: Path to check
* @sw: Switch to check
* @port: Switch to check
*
* Goes over all hops on path and checks if @sw is any of them.
* Goes over all hops on path and checks if @port is any of them.
* Direction does not matter.
*/
bool tb_path_switch_on_path(const struct tb_path *path,
const struct tb_switch *sw)
bool tb_path_port_on_path(const struct tb_path *path, const struct tb_port *port)
{
int i;
for (i = 0; i < path->path_length; i++) {
if (path->hops[i].in_port->sw == sw ||
path->hops[i].out_port->sw == sw)
if (path->hops[i].in_port == port ||
path->hops[i].out_port == port)
return true;
}

42
drivers/thunderbolt/quirks.c Normal file
View File

@ -0,0 +1,42 @@
// SPDX-License-Identifier: GPL-2.0
/*
* Thunderbolt driver - quirks
*
* Copyright (c) 2020 Mario Limonciello <mario.limonciello@dell.com>
*/
#include "tb.h"
static void quirk_force_power_link(struct tb_switch *sw)
{
sw->quirks |= QUIRK_FORCE_POWER_LINK_CONTROLLER;
}
struct tb_quirk {
u16 vendor;
u16 device;
void (*hook)(struct tb_switch *sw);
};
static const struct tb_quirk tb_quirks[] = {
/* Dell WD19TB supports self-authentication on unplug */
{ 0x00d4, 0xb070, quirk_force_power_link },
};
/**
* tb_check_quirks() - Check for quirks to apply
* @sw: Thunderbolt switch
*
* Apply any quirks for the Thunderbolt controller
*/
void tb_check_quirks(struct tb_switch *sw)
{
int i;
for (i = 0; i < ARRAY_SIZE(tb_quirks); i++) {
const struct tb_quirk *q = &tb_quirks[i];
if (sw->device == q->device && sw->vendor == q->vendor)
q->hook(sw);
}
}

485
drivers/thunderbolt/retimer.c Normal file
View File

@ -0,0 +1,485 @@
// SPDX-License-Identifier: GPL-2.0
/*
* Thunderbolt/USB4 retimer support.
*
* Copyright (C) 2020, Intel Corporation
* Authors: Kranthi Kuntala <kranthi.kuntala@intel.com>
* Mika Westerberg <mika.westerberg@linux.intel.com>
*/
#include <linux/delay.h>
#include <linux/pm_runtime.h>
#include <linux/sched/signal.h>
#include "sb_regs.h"
#include "tb.h"
#define TB_MAX_RETIMER_INDEX 6
static int tb_retimer_nvm_read(void *priv, unsigned int offset, void *val,
size_t bytes)
{
struct tb_nvm *nvm = priv;
struct tb_retimer *rt = tb_to_retimer(nvm->dev);
int ret;
pm_runtime_get_sync(&rt->dev);
if (!mutex_trylock(&rt->tb->lock)) {
ret = restart_syscall();
goto out;
}
ret = usb4_port_retimer_nvm_read(rt->port, rt->index, offset, val, bytes);
mutex_unlock(&rt->tb->lock);
out:
pm_runtime_mark_last_busy(&rt->dev);
pm_runtime_put_autosuspend(&rt->dev);
return ret;
}
static int tb_retimer_nvm_write(void *priv, unsigned int offset, void *val,
size_t bytes)
{
struct tb_nvm *nvm = priv;
struct tb_retimer *rt = tb_to_retimer(nvm->dev);
int ret = 0;
if (!mutex_trylock(&rt->tb->lock))
return restart_syscall();
ret = tb_nvm_write_buf(nvm, offset, val, bytes);
mutex_unlock(&rt->tb->lock);
return ret;
}
static int tb_retimer_nvm_add(struct tb_retimer *rt)
{
struct tb_nvm *nvm;
u32 val, nvm_size;
int ret;
nvm = tb_nvm_alloc(&rt->dev);
if (IS_ERR(nvm))
return PTR_ERR(nvm);
ret = usb4_port_retimer_nvm_read(rt->port, rt->index, NVM_VERSION, &val,
sizeof(val));
if (ret)
goto err_nvm;
nvm->major = val >> 16;
nvm->minor = val >> 8;
ret = usb4_port_retimer_nvm_read(rt->port, rt->index, NVM_FLASH_SIZE,
&val, sizeof(val));
if (ret)
goto err_nvm;
nvm_size = (SZ_1M << (val & 7)) / 8;
nvm_size = (nvm_size - SZ_16K) / 2;
ret = tb_nvm_add_active(nvm, nvm_size, tb_retimer_nvm_read);
if (ret)
goto err_nvm;
ret = tb_nvm_add_non_active(nvm, NVM_MAX_SIZE, tb_retimer_nvm_write);
if (ret)
goto err_nvm;
rt->nvm = nvm;
return 0;
err_nvm:
tb_nvm_free(nvm);
return ret;
}
static int tb_retimer_nvm_validate_and_write(struct tb_retimer *rt)
{
unsigned int image_size, hdr_size;
const u8 *buf = rt->nvm->buf;
u16 ds_size, device;
image_size = rt->nvm->buf_data_size;
if (image_size < NVM_MIN_SIZE || image_size > NVM_MAX_SIZE)
return -EINVAL;
/*
* FARB pointer must point inside the image and must at least
* contain parts of the digital section we will be reading here.
*/
hdr_size = (*(u32 *)buf) & 0xffffff;
if (hdr_size + NVM_DEVID + 2 >= image_size)
return -EINVAL;
/* Digital section start should be aligned to 4k page */
if (!IS_ALIGNED(hdr_size, SZ_4K))
return -EINVAL;
/*
* Read digital section size and check that it also fits inside
* the image.
*/
ds_size = *(u16 *)(buf + hdr_size);
if (ds_size >= image_size)
return -EINVAL;
/*
* Make sure the device ID in the image matches the retimer
* hardware.
*/
device = *(u16 *)(buf + hdr_size + NVM_DEVID);
if (device != rt->device)
return -EINVAL;
/* Skip headers in the image */
buf += hdr_size;
image_size -= hdr_size;
return usb4_port_retimer_nvm_write(rt->port, rt->index, 0, buf,
image_size);
}
static ssize_t device_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct tb_retimer *rt = tb_to_retimer(dev);
return sprintf(buf, "%#x\n", rt->device);
}
static DEVICE_ATTR_RO(device);
static ssize_t nvm_authenticate_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct tb_retimer *rt = tb_to_retimer(dev);
int ret;
if (!mutex_trylock(&rt->tb->lock))
return restart_syscall();
if (!rt->nvm)
ret = -EAGAIN;
else
ret = sprintf(buf, "%#x\n", rt->auth_status);
mutex_unlock(&rt->tb->lock);
return ret;
}
static ssize_t nvm_authenticate_store(struct device *dev,
struct device_attribute *attr, const char *buf, size_t count)
{
struct tb_retimer *rt = tb_to_retimer(dev);
bool val;
int ret;
pm_runtime_get_sync(&rt->dev);
if (!mutex_trylock(&rt->tb->lock)) {
ret = restart_syscall();
goto exit_rpm;
}
if (!rt->nvm) {
ret = -EAGAIN;
goto exit_unlock;
}
ret = kstrtobool(buf, &val);
if (ret)
goto exit_unlock;
/* Always clear status */
rt->auth_status = 0;
if (val) {
if (!rt->nvm->buf) {
ret = -EINVAL;
goto exit_unlock;
}
ret = tb_retimer_nvm_validate_and_write(rt);
if (ret)
goto exit_unlock;
ret = usb4_port_retimer_nvm_authenticate(rt->port, rt->index);
}
exit_unlock:
mutex_unlock(&rt->tb->lock);
exit_rpm:
pm_runtime_mark_last_busy(&rt->dev);
pm_runtime_put_autosuspend(&rt->dev);
if (ret)
return ret;
return count;
}
static DEVICE_ATTR_RW(nvm_authenticate);
static ssize_t nvm_version_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct tb_retimer *rt = tb_to_retimer(dev);
int ret;
if (!mutex_trylock(&rt->tb->lock))
return restart_syscall();
if (!rt->nvm)
ret = -EAGAIN;
else
ret = sprintf(buf, "%x.%x\n", rt->nvm->major, rt->nvm->minor);
mutex_unlock(&rt->tb->lock);
return ret;
}
static DEVICE_ATTR_RO(nvm_version);
static ssize_t vendor_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct tb_retimer *rt = tb_to_retimer(dev);
return sprintf(buf, "%#x\n", rt->vendor);
}
static DEVICE_ATTR_RO(vendor);
static struct attribute *retimer_attrs[] = {
&dev_attr_device.attr,
&dev_attr_nvm_authenticate.attr,
&dev_attr_nvm_version.attr,
&dev_attr_vendor.attr,
NULL
};
static const struct attribute_group retimer_group = {
.attrs = retimer_attrs,
};
static const struct attribute_group *retimer_groups[] = {
&retimer_group,
NULL
};
static void tb_retimer_release(struct device *dev)
{
struct tb_retimer *rt = tb_to_retimer(dev);
kfree(rt);
}
struct device_type tb_retimer_type = {
.name = "thunderbolt_retimer",
.groups = retimer_groups,
.release = tb_retimer_release,
};
static int tb_retimer_add(struct tb_port *port, u8 index, u32 auth_status)
{
struct tb_retimer *rt;
u32 vendor, device;
int ret;
if (!port->cap_usb4)
return -EINVAL;
ret = usb4_port_retimer_read(port, index, USB4_SB_VENDOR_ID, &vendor,
sizeof(vendor));
if (ret) {
if (ret != -ENODEV)
tb_port_warn(port, "failed read retimer VendorId: %d\n", ret);
return ret;
}
ret = usb4_port_retimer_read(port, index, USB4_SB_PRODUCT_ID, &device,
sizeof(device));
if (ret) {
if (ret != -ENODEV)
tb_port_warn(port, "failed read retimer ProductId: %d\n", ret);
return ret;
}
if (vendor != PCI_VENDOR_ID_INTEL && vendor != 0x8087) {
tb_port_info(port, "retimer NVM format of vendor %#x is not supported\n",
vendor);
return -EOPNOTSUPP;
}
/*
* Check that it supports NVM operations. If not then don't add
* the device at all.
*/
ret = usb4_port_retimer_nvm_sector_size(port, index);
if (ret < 0)
return ret;
rt = kzalloc(sizeof(*rt), GFP_KERNEL);
if (!rt)
return -ENOMEM;
rt->index = index;
rt->vendor = vendor;
rt->device = device;
rt->auth_status = auth_status;
rt->port = port;
rt->tb = port->sw->tb;
rt->dev.parent = &port->sw->dev;
rt->dev.bus = &tb_bus_type;
rt->dev.type = &tb_retimer_type;
dev_set_name(&rt->dev, "%s:%u.%u", dev_name(&port->sw->dev),
port->port, index);
ret = device_register(&rt->dev);
if (ret) {
dev_err(&rt->dev, "failed to register retimer: %d\n", ret);
put_device(&rt->dev);
return ret;
}
ret = tb_retimer_nvm_add(rt);
if (ret) {
dev_err(&rt->dev, "failed to add NVM devices: %d\n", ret);
device_del(&rt->dev);
return ret;
}
dev_info(&rt->dev, "new retimer found, vendor=%#x device=%#x\n",
rt->vendor, rt->device);
pm_runtime_no_callbacks(&rt->dev);
pm_runtime_set_active(&rt->dev);
pm_runtime_enable(&rt->dev);
pm_runtime_set_autosuspend_delay(&rt->dev, TB_AUTOSUSPEND_DELAY);
pm_runtime_mark_last_busy(&rt->dev);
pm_runtime_use_autosuspend(&rt->dev);
return 0;
}
static void tb_retimer_remove(struct tb_retimer *rt)
{
dev_info(&rt->dev, "retimer disconnected\n");
tb_nvm_free(rt->nvm);
device_unregister(&rt->dev);
}
struct tb_retimer_lookup {
const struct tb_port *port;
u8 index;
};
static int retimer_match(struct device *dev, void *data)
{
const struct tb_retimer_lookup *lookup = data;
struct tb_retimer *rt = tb_to_retimer(dev);
return rt && rt->port == lookup->port && rt->index == lookup->index;
}
static struct tb_retimer *tb_port_find_retimer(struct tb_port *port, u8 index)
{
struct tb_retimer_lookup lookup = { .port = port, .index = index };
struct device *dev;
dev = device_find_child(&port->sw->dev, &lookup, retimer_match);
if (dev)
return tb_to_retimer(dev);
return NULL;
}
/**
* tb_retimer_scan() - Scan for on-board retimers under port
* @port: USB4 port to scan
*
* Tries to enumerate on-board retimers connected to @port. Found
* retimers are registered as children of @port. Does not scan for cable
* retimers for now.
*/
int tb_retimer_scan(struct tb_port *port)
{
u32 status[TB_MAX_RETIMER_INDEX] = {};
int ret, i, last_idx = 0;
if (!port->cap_usb4)
return 0;
/*
* Send broadcast RT to make sure retimer indices facing this
* port are set.
*/
ret = usb4_port_enumerate_retimers(port);
if (ret)
return ret;
/*
* Before doing anything else, read the authentication status.
* If the retimer has it set, store it for the new retimer
* device instance.
*/
for (i = 1; i <= TB_MAX_RETIMER_INDEX; i++)
usb4_port_retimer_nvm_authenticate_status(port, i, &status[i]);
for (i = 1; i <= TB_MAX_RETIMER_INDEX; i++) {
/*
* Last retimer is true only for the last on-board
* retimer (the one connected directly to the Type-C
* port).
*/
ret = usb4_port_retimer_is_last(port, i);
if (ret > 0)
last_idx = i;
else if (ret < 0)
break;
}
if (!last_idx)
return 0;
/* Add on-board retimers if they do not exist already */
for (i = 1; i <= last_idx; i++) {
struct tb_retimer *rt;
rt = tb_port_find_retimer(port, i);
if (rt) {
put_device(&rt->dev);
} else {
ret = tb_retimer_add(port, i, status[i]);
if (ret && ret != -EOPNOTSUPP)
return ret;
}
}
return 0;
}
static int remove_retimer(struct device *dev, void *data)
{
struct tb_retimer *rt = tb_to_retimer(dev);
struct tb_port *port = data;
if (rt && rt->port == port)
tb_retimer_remove(rt);
return 0;
}
/**
* tb_retimer_remove_all() - Remove all retimers under port
* @port: USB4 port whose retimers to remove
*
* This removes all previously added retimers under @port.
*/
void tb_retimer_remove_all(struct tb_port *port)
{
if (port->cap_usb4)
device_for_each_child_reverse(&port->sw->dev, port,
remove_retimer);
}

33
drivers/thunderbolt/sb_regs.h Normal file
View File

@ -0,0 +1,33 @@
/* SPDX-License-Identifier: GPL-2.0 */
/*
* USB4 port sideband registers found on routers and retimers
*
* Copyright (C) 2020, Intel Corporation
* Authors: Mika Westerberg <mika.westerberg@linux.intel.com>
* Rajmohan Mani <rajmohan.mani@intel.com>
*/
#ifndef _SB_REGS
#define _SB_REGS
#define USB4_SB_VENDOR_ID 0x00
#define USB4_SB_PRODUCT_ID 0x01
#define USB4_SB_OPCODE 0x08
enum usb4_sb_opcode {
USB4_SB_OPCODE_ERR = 0x20525245, /* "ERR " */
USB4_SB_OPCODE_ONS = 0x444d4321, /* "!CMD" */
USB4_SB_OPCODE_ENUMERATE_RETIMERS = 0x4d554e45, /* "ENUM" */
USB4_SB_OPCODE_QUERY_LAST_RETIMER = 0x5453414c, /* "LAST" */
USB4_SB_OPCODE_GET_NVM_SECTOR_SIZE = 0x53534e47, /* "GNSS" */
USB4_SB_OPCODE_NVM_SET_OFFSET = 0x53504f42, /* "BOPS" */
USB4_SB_OPCODE_NVM_BLOCK_WRITE = 0x574b4c42, /* "BLKW" */
USB4_SB_OPCODE_NVM_AUTH_WRITE = 0x48545541, /* "AUTH" */
USB4_SB_OPCODE_NVM_READ = 0x52524641, /* "AFRR" */
};
#define USB4_SB_METADATA 0x09
#define USB4_SB_METADATA_NVM_AUTH_WRITE_MASK GENMASK(5, 0)
#define USB4_SB_DATA 0x12
#endif

232
drivers/thunderbolt/switch.c
View File

@ -13,21 +13,12 @@
#include <linux/sched/signal.h>
#include <linux/sizes.h>
#include <linux/slab.h>
#include <linux/vmalloc.h>
#include "tb.h"
/* Switch NVM support */
#define NVM_DEVID 0x05
#define NVM_VERSION 0x08
#define NVM_CSS 0x10
#define NVM_FLASH_SIZE 0x45
#define NVM_MIN_SIZE SZ_32K
#define NVM_MAX_SIZE SZ_512K
static DEFINE_IDA(nvm_ida);
struct nvm_auth_status {
struct list_head list;
@ -35,6 +26,11 @@ struct nvm_auth_status {
u32 status;
};
enum nvm_write_ops {
WRITE_AND_AUTHENTICATE = 1,
WRITE_ONLY = 2,
};
/*
* Hold NVM authentication failure status per switch This information
* needs to stay around even when the switch gets power cycled so we
@ -164,8 +160,12 @@ static int nvm_validate_and_write(struct tb_switch *sw)
}
if (tb_switch_is_usb4(sw))
return usb4_switch_nvm_write(sw, 0, buf, image_size);
return dma_port_flash_write(sw->dma_port, 0, buf, image_size);
ret = usb4_switch_nvm_write(sw, 0, buf, image_size);
else
ret = dma_port_flash_write(sw->dma_port, 0, buf, image_size);
if (!ret)
sw->nvm->flushed = true;
return ret;
}
static int nvm_authenticate_host_dma_port(struct tb_switch *sw)
@ -328,7 +328,8 @@ static int nvm_authenticate(struct tb_switch *sw)
static int tb_switch_nvm_read(void *priv, unsigned int offset, void *val,
size_t bytes)
{
struct tb_switch *sw = priv;
struct tb_nvm *nvm = priv;
struct tb_switch *sw = tb_to_switch(nvm->dev);
int ret;
pm_runtime_get_sync(&sw->dev);
@ -351,8 +352,9 @@ out:
static int tb_switch_nvm_write(void *priv, unsigned int offset, void *val,
size_t bytes)
{
struct tb_switch *sw = priv;
int ret = 0;
struct tb_nvm *nvm = priv;
struct tb_switch *sw = tb_to_switch(nvm->dev);
int ret;
if (!mutex_trylock(&sw->tb->lock))
return restart_syscall();
@ -363,55 +365,15 @@ static int tb_switch_nvm_write(void *priv, unsigned int offset, void *val,
* locally here and handle the special cases when the user asks
* us to authenticate the image.
*/
if (!sw->nvm->buf) {
sw->nvm->buf = vmalloc(NVM_MAX_SIZE);
if (!sw->nvm->buf) {
ret = -ENOMEM;
goto unlock;
}
}
sw->nvm->buf_data_size = offset + bytes;
memcpy(sw->nvm->buf + offset, val, bytes);
unlock:
ret = tb_nvm_write_buf(nvm, offset, val, bytes);
mutex_unlock(&sw->tb->lock);
return ret;
}
static struct nvmem_device *register_nvmem(struct tb_switch *sw, int id,
size_t size, bool active)
{
struct nvmem_config config;
memset(&config, 0, sizeof(config));
if (active) {
config.name = "nvm_active";
config.reg_read = tb_switch_nvm_read;
config.read_only = true;
} else {
config.name = "nvm_non_active";
config.reg_write = tb_switch_nvm_write;
config.root_only = true;
}
config.id = id;
config.stride = 4;
config.word_size = 4;
config.size = size;
config.dev = &sw->dev;
config.owner = THIS_MODULE;
config.priv = sw;
return nvmem_register(&config);
}
static int tb_switch_nvm_add(struct tb_switch *sw)
{
struct nvmem_device *nvm_dev;
struct tb_switch_nvm *nvm;
struct tb_nvm *nvm;
u32 val;
int ret;
@ -423,18 +385,17 @@ static int tb_switch_nvm_add(struct tb_switch *sw)
* currently restrict NVM upgrade for Intel hardware. We may
* relax this in the future when we learn other NVM formats.
*/
if (sw->config.vendor_id != PCI_VENDOR_ID_INTEL) {
if (sw->config.vendor_id != PCI_VENDOR_ID_INTEL &&
sw->config.vendor_id != 0x8087) {
dev_info(&sw->dev,
"NVM format of vendor %#x is not known, disabling NVM upgrade\n",
sw->config.vendor_id);
return 0;
}
nvm = kzalloc(sizeof(*nvm), GFP_KERNEL);
if (!nvm)
return -ENOMEM;
nvm->id = ida_simple_get(&nvm_ida, 0, 0, GFP_KERNEL);
nvm = tb_nvm_alloc(&sw->dev);
if (IS_ERR(nvm))
return PTR_ERR(nvm);
/*
* If the switch is in safe-mode the only accessible portion of
@ -446,7 +407,7 @@ static int tb_switch_nvm_add(struct tb_switch *sw)
ret = nvm_read(sw, NVM_FLASH_SIZE, &val, sizeof(val));
if (ret)
goto err_ida;
goto err_nvm;
hdr_size = sw->generation < 3 ? SZ_8K : SZ_16K;
nvm_size = (SZ_1M << (val & 7)) / 8;
@ -454,44 +415,34 @@ static int tb_switch_nvm_add(struct tb_switch *sw)
ret = nvm_read(sw, NVM_VERSION, &val, sizeof(val));
if (ret)
goto err_ida;
goto err_nvm;
nvm->major = val >> 16;
nvm->minor = val >> 8;
nvm_dev = register_nvmem(sw, nvm->id, nvm_size, true);
if (IS_ERR(nvm_dev)) {
ret = PTR_ERR(nvm_dev);
goto err_ida;
}
nvm->active = nvm_dev;
ret = tb_nvm_add_active(nvm, nvm_size, tb_switch_nvm_read);
if (ret)
goto err_nvm;
}
if (!sw->no_nvm_upgrade) {
nvm_dev = register_nvmem(sw, nvm->id, NVM_MAX_SIZE, false);
if (IS_ERR(nvm_dev)) {
ret = PTR_ERR(nvm_dev);
goto err_nvm_active;
}
nvm->non_active = nvm_dev;
ret = tb_nvm_add_non_active(nvm, NVM_MAX_SIZE,
tb_switch_nvm_write);
if (ret)
goto err_nvm;
}
sw->nvm = nvm;
return 0;
err_nvm_active:
if (nvm->active)
nvmem_unregister(nvm->active);
err_ida:
ida_simple_remove(&nvm_ida, nvm->id);
kfree(nvm);
err_nvm:
tb_nvm_free(nvm);
return ret;
}
static void tb_switch_nvm_remove(struct tb_switch *sw)
{
struct tb_switch_nvm *nvm;
struct tb_nvm *nvm;
nvm = sw->nvm;
sw->nvm = NULL;
@ -503,13 +454,7 @@ static void tb_switch_nvm_remove(struct tb_switch *sw)
if (!nvm->authenticating)
nvm_clear_auth_status(sw);
if (nvm->non_active)
nvmem_unregister(nvm->non_active);
if (nvm->active)
nvmem_unregister(nvm->active);
ida_simple_remove(&nvm_ida, nvm->id);
vfree(nvm->buf);
kfree(nvm);
tb_nvm_free(nvm);
}
/* port utility functions */
@ -789,8 +734,11 @@ static int tb_port_alloc_hopid(struct tb_port *port, bool in, int min_hopid,
ida = &port->out_hopids;
}
/* HopIDs 0-7 are reserved */
if (min_hopid < TB_PATH_MIN_HOPID)
/*
* NHI can use HopIDs 1-max for other adapters HopIDs 0-7 are
* reserved.
*/
if (port->config.type != TB_TYPE_NHI && min_hopid < TB_PATH_MIN_HOPID)
min_hopid = TB_PATH_MIN_HOPID;
if (max_hopid < 0 || max_hopid > port_max_hopid)
@ -847,6 +795,13 @@ void tb_port_release_out_hopid(struct tb_port *port, int hopid)
ida_simple_remove(&port->out_hopids, hopid);
}
static inline bool tb_switch_is_reachable(const struct tb_switch *parent,
const struct tb_switch *sw)
{
u64 mask = (1ULL << parent->config.depth * 8) - 1;
return (tb_route(parent) & mask) == (tb_route(sw) & mask);
}
/**
* tb_next_port_on_path() - Return next port for given port on a path
* @start: Start port of the walk
@ -876,12 +831,12 @@ struct tb_port *tb_next_port_on_path(struct tb_port *start, struct tb_port *end,
return end;
}
if (start->sw->config.depth < end->sw->config.depth) {
if (tb_switch_is_reachable(prev->sw, end->sw)) {
next = tb_port_at(tb_route(end->sw), prev->sw);
/* Walk down the topology if next == prev */
if (prev->remote &&
prev->remote->sw->config.depth > prev->sw->config.depth)
(next == prev || next->dual_link_port == prev))
next = prev->remote;
else
next = tb_port_at(tb_route(end->sw), prev->sw);
} else {
if (tb_is_upstream_port(prev)) {
next = prev->remote;
@ -898,10 +853,16 @@ struct tb_port *tb_next_port_on_path(struct tb_port *start, struct tb_port *end,
}
}
return next;
return next != prev ? next : NULL;
}
static int tb_port_get_link_speed(struct tb_port *port)
/**
* tb_port_get_link_speed() - Get current link speed
* @port: Port to check (USB4 or CIO)
*
* Returns link speed in Gb/s or negative errno in case of failure.
*/
int tb_port_get_link_speed(struct tb_port *port)
{
u32 val, speed;
int ret;
@ -1532,11 +1493,11 @@ static ssize_t nvm_authenticate_show(struct device *dev,
return sprintf(buf, "%#x\n", status);
}
static ssize_t nvm_authenticate_store(struct device *dev,
struct device_attribute *attr, const char *buf, size_t count)
static ssize_t nvm_authenticate_sysfs(struct device *dev, const char *buf,
bool disconnect)
{
struct tb_switch *sw = tb_to_switch(dev);
bool val;
int val;
int ret;
pm_runtime_get_sync(&sw->dev);
@ -1552,25 +1513,32 @@ static ssize_t nvm_authenticate_store(struct device *dev,
goto exit_unlock;
}
ret = kstrtobool(buf, &val);
ret = kstrtoint(buf, 10, &val);
if (ret)
goto exit_unlock;
/* Always clear the authentication status */
nvm_clear_auth_status(sw);
if (val) {
if (!sw->nvm->buf) {
ret = -EINVAL;
goto exit_unlock;
if (val > 0) {
if (!sw->nvm->flushed) {
if (!sw->nvm->buf) {
ret = -EINVAL;
goto exit_unlock;
}
ret = nvm_validate_and_write(sw);
if (ret || val == WRITE_ONLY)
goto exit_unlock;
}
if (val == WRITE_AND_AUTHENTICATE) {
if (disconnect) {
ret = tb_lc_force_power(sw);
} else {
sw->nvm->authenticating = true;
ret = nvm_authenticate(sw);
}
}
ret = nvm_validate_and_write(sw);
if (ret)
goto exit_unlock;
sw->nvm->authenticating = true;
ret = nvm_authenticate(sw);
}
exit_unlock:
@ -1579,12 +1547,35 @@ exit_rpm:
pm_runtime_mark_last_busy(&sw->dev);
pm_runtime_put_autosuspend(&sw->dev);
return ret;
}
static ssize_t nvm_authenticate_store(struct device *dev,
struct device_attribute *attr, const char *buf, size_t count)
{
int ret = nvm_authenticate_sysfs(dev, buf, false);
if (ret)
return ret;
return count;
}
static DEVICE_ATTR_RW(nvm_authenticate);
static ssize_t nvm_authenticate_on_disconnect_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
return nvm_authenticate_show(dev, attr, buf);
}
static ssize_t nvm_authenticate_on_disconnect_store(struct device *dev,
struct device_attribute *attr, const char *buf, size_t count)
{
int ret;
ret = nvm_authenticate_sysfs(dev, buf, true);
return ret ? ret : count;
}
static DEVICE_ATTR_RW(nvm_authenticate_on_disconnect);
static ssize_t nvm_version_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
@ -1642,6 +1633,7 @@ static struct attribute *switch_attrs[] = {
&dev_attr_generation.attr,
&dev_attr_key.attr,
&dev_attr_nvm_authenticate.attr,
&dev_attr_nvm_authenticate_on_disconnect.attr,
&dev_attr_nvm_version.attr,
&dev_attr_rx_speed.attr,
&dev_attr_rx_lanes.attr,
@ -1696,6 +1688,10 @@ static umode_t switch_attr_is_visible(struct kobject *kobj,
if (tb_route(sw))
return attr->mode;
return 0;
} else if (attr == &dev_attr_nvm_authenticate_on_disconnect.attr) {
if (sw->quirks & QUIRK_FORCE_POWER_LINK_CONTROLLER)
return attr->mode;
return 0;
}
return sw->safe_mode ? 0 : attr->mode;
@ -2440,6 +2436,9 @@ void tb_switch_remove(struct tb_switch *sw)
tb_xdomain_remove(port->xdomain);
port->xdomain = NULL;
}
/* Remove any downstream retimers */
tb_retimer_remove_all(port);
}
if (!sw->is_unplugged)
@ -2755,8 +2754,3 @@ struct tb_port *tb_switch_find_port(struct tb_switch *sw,
return NULL;
}
void tb_switch_exit(void)
{
ida_destroy(&nvm_ida);
}

392
drivers/thunderbolt/tb.c
View File

@ -206,27 +206,197 @@ static struct tb_port *tb_find_unused_port(struct tb_switch *sw,
}
static struct tb_port *tb_find_usb3_down(struct tb_switch *sw,
const struct tb_port *port)
const struct tb_port *port)
{
struct tb_port *down;
down = usb4_switch_map_usb3_down(sw, port);
if (down) {
if (WARN_ON(!tb_port_is_usb3_down(down)))
goto out;
if (WARN_ON(tb_usb3_port_is_enabled(down)))
goto out;
if (down && !tb_usb3_port_is_enabled(down))
return down;
return NULL;
}
static struct tb_tunnel *tb_find_tunnel(struct tb *tb, enum tb_tunnel_type type,
struct tb_port *src_port,
struct tb_port *dst_port)
{
struct tb_cm *tcm = tb_priv(tb);
struct tb_tunnel *tunnel;
list_for_each_entry(tunnel, &tcm->tunnel_list, list) {
if (tunnel->type == type &&
((src_port && src_port == tunnel->src_port) ||
(dst_port && dst_port == tunnel->dst_port))) {
return tunnel;
}
}
out:
return tb_find_unused_port(sw, TB_TYPE_USB3_DOWN);
return NULL;
}
static struct tb_tunnel *tb_find_first_usb3_tunnel(struct tb *tb,
struct tb_port *src_port,
struct tb_port *dst_port)
{
struct tb_port *port, *usb3_down;
struct tb_switch *sw;
/* Pick the router that is deepest in the topology */
if (dst_port->sw->config.depth > src_port->sw->config.depth)
sw = dst_port->sw;
else
sw = src_port->sw;
/* Can't be the host router */
if (sw == tb->root_switch)
return NULL;
/* Find the downstream USB4 port that leads to this router */
port = tb_port_at(tb_route(sw), tb->root_switch);
/* Find the corresponding host router USB3 downstream port */
usb3_down = usb4_switch_map_usb3_down(tb->root_switch, port);
if (!usb3_down)
return NULL;
return tb_find_tunnel(tb, TB_TUNNEL_USB3, usb3_down, NULL);
}
static int tb_available_bandwidth(struct tb *tb, struct tb_port *src_port,
struct tb_port *dst_port, int *available_up, int *available_down)
{
int usb3_consumed_up, usb3_consumed_down, ret;
struct tb_cm *tcm = tb_priv(tb);
struct tb_tunnel *tunnel;
struct tb_port *port;
tb_port_dbg(dst_port, "calculating available bandwidth\n");
tunnel = tb_find_first_usb3_tunnel(tb, src_port, dst_port);
if (tunnel) {
ret = tb_tunnel_consumed_bandwidth(tunnel, &usb3_consumed_up,
&usb3_consumed_down);
if (ret)
return ret;
} else {
usb3_consumed_up = 0;
usb3_consumed_down = 0;
}
*available_up = *available_down = 40000;
/* Find the minimum available bandwidth over all links */
tb_for_each_port_on_path(src_port, dst_port, port) {
int link_speed, link_width, up_bw, down_bw;
if (!tb_port_is_null(port))
continue;
if (tb_is_upstream_port(port)) {
link_speed = port->sw->link_speed;
} else {
link_speed = tb_port_get_link_speed(port);
if (link_speed < 0)
return link_speed;
}
link_width = port->bonded ? 2 : 1;
up_bw = link_speed * link_width * 1000; /* Mb/s */
/* Leave 10% guard band */
up_bw -= up_bw / 10;
down_bw = up_bw;
tb_port_dbg(port, "link total bandwidth %d Mb/s\n", up_bw);
/*
* Find all DP tunnels that cross the port and reduce
* their consumed bandwidth from the available.
*/
list_for_each_entry(tunnel, &tcm->tunnel_list, list) {
int dp_consumed_up, dp_consumed_down;
if (!tb_tunnel_is_dp(tunnel))
continue;
if (!tb_tunnel_port_on_path(tunnel, port))
continue;
ret = tb_tunnel_consumed_bandwidth(tunnel,
&dp_consumed_up,
&dp_consumed_down);
if (ret)
return ret;
up_bw -= dp_consumed_up;
down_bw -= dp_consumed_down;
}
/*
* If USB3 is tunneled from the host router down to the
* branch leading to port we need to take USB3 consumed
* bandwidth into account regardless whether it actually
* crosses the port.
*/
up_bw -= usb3_consumed_up;
down_bw -= usb3_consumed_down;
if (up_bw < *available_up)
*available_up = up_bw;
if (down_bw < *available_down)
*available_down = down_bw;
}
if (*available_up < 0)
*available_up = 0;
if (*available_down < 0)
*available_down = 0;
return 0;
}
static int tb_release_unused_usb3_bandwidth(struct tb *tb,
struct tb_port *src_port,
struct tb_port *dst_port)
{
struct tb_tunnel *tunnel;
tunnel = tb_find_first_usb3_tunnel(tb, src_port, dst_port);
return tunnel ? tb_tunnel_release_unused_bandwidth(tunnel) : 0;
}
static void tb_reclaim_usb3_bandwidth(struct tb *tb, struct tb_port *src_port,
struct tb_port *dst_port)
{
int ret, available_up, available_down;
struct tb_tunnel *tunnel;
tunnel = tb_find_first_usb3_tunnel(tb, src_port, dst_port);
if (!tunnel)
return;
tb_dbg(tb, "reclaiming unused bandwidth for USB3\n");
/*
* Calculate available bandwidth for the first hop USB3 tunnel.
* That determines the whole USB3 bandwidth for this branch.
*/
ret = tb_available_bandwidth(tb, tunnel->src_port, tunnel->dst_port,
&available_up, &available_down);
if (ret) {
tb_warn(tb, "failed to calculate available bandwidth\n");
return;
}
tb_dbg(tb, "available bandwidth for USB3 %d/%d Mb/s\n",
available_up, available_down);
tb_tunnel_reclaim_available_bandwidth(tunnel, &available_up, &available_down);
}
static int tb_tunnel_usb3(struct tb *tb, struct tb_switch *sw)
{
struct tb_switch *parent = tb_switch_parent(sw);
int ret, available_up, available_down;
struct tb_port *up, *down, *port;
struct tb_cm *tcm = tb_priv(tb);
struct tb_tunnel *tunnel;
@ -235,6 +405,9 @@ static int tb_tunnel_usb3(struct tb *tb, struct tb_switch *sw)
if (!up)
return 0;
if (!sw->link_usb4)
return 0;
/*
* Look up available down port. Since we are chaining it should
* be found right above this switch.
@ -254,21 +427,48 @@ static int tb_tunnel_usb3(struct tb *tb, struct tb_switch *sw)
parent_up = tb_switch_find_port(parent, TB_TYPE_USB3_UP);
if (!parent_up || !tb_port_is_enabled(parent_up))
return 0;
/* Make all unused bandwidth available for the new tunnel */
ret = tb_release_unused_usb3_bandwidth(tb, down, up);
if (ret)
return ret;
}
tunnel = tb_tunnel_alloc_usb3(tb, up, down);
if (!tunnel)
return -ENOMEM;
ret = tb_available_bandwidth(tb, down, up, &available_up,
&available_down);
if (ret)
goto err_reclaim;
tb_port_dbg(up, "available bandwidth for new USB3 tunnel %d/%d Mb/s\n",
available_up, available_down);
tunnel = tb_tunnel_alloc_usb3(tb, up, down, available_up,
available_down);
if (!tunnel) {
ret = -ENOMEM;
goto err_reclaim;
}
if (tb_tunnel_activate(tunnel)) {
tb_port_info(up,
"USB3 tunnel activation failed, aborting\n");
tb_tunnel_free(tunnel);
return -EIO;
ret = -EIO;
goto err_free;
}
list_add_tail(&tunnel->list, &tcm->tunnel_list);
if (tb_route(parent))
tb_reclaim_usb3_bandwidth(tb, down, up);
return 0;
err_free:
tb_tunnel_free(tunnel);
err_reclaim:
if (tb_route(parent))
tb_reclaim_usb3_bandwidth(tb, down, up);
return ret;
}
static int tb_create_usb3_tunnels(struct tb_switch *sw)
@ -339,6 +539,9 @@ static void tb_scan_port(struct tb_port *port)
tb_port_dbg(port, "port already has a remote\n");
return;
}
tb_retimer_scan(port);
sw = tb_switch_alloc(port->sw->tb, &port->sw->dev,
tb_downstream_route(port));
if (IS_ERR(sw)) {
@ -395,6 +598,9 @@ static void tb_scan_port(struct tb_port *port)
if (tb_enable_tmu(sw))
tb_sw_warn(sw, "failed to enable TMU\n");
/* Scan upstream retimers */
tb_retimer_scan(upstream_port);
/*
* Create USB 3.x tunnels only when the switch is plugged to the
* domain. This is because we scan the domain also during discovery
@ -404,43 +610,44 @@ static void tb_scan_port(struct tb_port *port)
if (tcm->hotplug_active && tb_tunnel_usb3(sw->tb, sw))
tb_sw_warn(sw, "USB3 tunnel creation failed\n");
tb_add_dp_resources(sw);
tb_scan_switch(sw);
}
static struct tb_tunnel *tb_find_tunnel(struct tb *tb, enum tb_tunnel_type type,
struct tb_port *src_port,
struct tb_port *dst_port)
{
struct tb_cm *tcm = tb_priv(tb);
struct tb_tunnel *tunnel;
list_for_each_entry(tunnel, &tcm->tunnel_list, list) {
if (tunnel->type == type &&
((src_port && src_port == tunnel->src_port) ||
(dst_port && dst_port == tunnel->dst_port))) {
return tunnel;
}
}
return NULL;
}
static void tb_deactivate_and_free_tunnel(struct tb_tunnel *tunnel)
{
struct tb_port *src_port, *dst_port;
struct tb *tb;
if (!tunnel)
return;
tb_tunnel_deactivate(tunnel);
list_del(&tunnel->list);
/*
* In case of DP tunnel make sure the DP IN resource is deallocated
* properly.
*/
if (tb_tunnel_is_dp(tunnel)) {
struct tb_port *in = tunnel->src_port;
tb = tunnel->tb;
src_port = tunnel->src_port;
dst_port = tunnel->dst_port;
tb_switch_dealloc_dp_resource(in->sw, in);
switch (tunnel->type) {
case TB_TUNNEL_DP:
/*
* In case of DP tunnel make sure the DP IN resource is
* deallocated properly.
*/
tb_switch_dealloc_dp_resource(src_port->sw, src_port);
fallthrough;
case TB_TUNNEL_USB3:
tb_reclaim_usb3_bandwidth(tb, src_port, dst_port);
break;
default:
/*
* PCIe and DMA tunnels do not consume guaranteed
* bandwidth.
*/
break;
}
tb_tunnel_free(tunnel);
@ -473,6 +680,7 @@ static void tb_free_unplugged_children(struct tb_switch *sw)
continue;
if (port->remote->sw->is_unplugged) {
tb_retimer_remove_all(port);
tb_remove_dp_resources(port->remote->sw);
tb_switch_lane_bonding_disable(port->remote->sw);
tb_switch_remove(port->remote->sw);
@ -524,7 +732,7 @@ static struct tb_port *tb_find_pcie_down(struct tb_switch *sw,
if (down) {
if (WARN_ON(!tb_port_is_pcie_down(down)))
goto out;
if (WARN_ON(tb_pci_port_is_enabled(down)))
if (tb_pci_port_is_enabled(down))
goto out;
return down;
@ -534,51 +742,49 @@ out:
return tb_find_unused_port(sw, TB_TYPE_PCIE_DOWN);
}
static int tb_available_bw(struct tb_cm *tcm, struct tb_port *in,
struct tb_port *out)
static struct tb_port *tb_find_dp_out(struct tb *tb, struct tb_port *in)
{
struct tb_switch *sw = out->sw;
struct tb_tunnel *tunnel;
int bw, available_bw = 40000;
struct tb_port *host_port, *port;
struct tb_cm *tcm = tb_priv(tb);
while (sw && sw != in->sw) {
bw = sw->link_speed * sw->link_width * 1000; /* Mb/s */
/* Leave 10% guard band */
bw -= bw / 10;
host_port = tb_route(in->sw) ?
tb_port_at(tb_route(in->sw), tb->root_switch) : NULL;
/*
* Check for any active DP tunnels that go through this
* switch and reduce their consumed bandwidth from
* available.
*/
list_for_each_entry(tunnel, &tcm->tunnel_list, list) {
int consumed_bw;
list_for_each_entry(port, &tcm->dp_resources, list) {
if (!tb_port_is_dpout(port))
continue;
if (!tb_tunnel_switch_on_path(tunnel, sw))
continue;
consumed_bw = tb_tunnel_consumed_bandwidth(tunnel);
if (consumed_bw < 0)
return consumed_bw;
bw -= consumed_bw;
if (tb_port_is_enabled(port)) {
tb_port_dbg(port, "in use\n");
continue;
}
if (bw < available_bw)
available_bw = bw;
tb_port_dbg(port, "DP OUT available\n");
sw = tb_switch_parent(sw);
/*
* Keep the DP tunnel under the topology starting from
* the same host router downstream port.
*/
if (host_port && tb_route(port->sw)) {
struct tb_port *p;
p = tb_port_at(tb_route(port->sw), tb->root_switch);
if (p != host_port)
continue;
}
return port;
}
return available_bw;
return NULL;
}
static void tb_tunnel_dp(struct tb *tb)
{
int available_up, available_down, ret;
struct tb_cm *tcm = tb_priv(tb);
struct tb_port *port, *in, *out;
struct tb_tunnel *tunnel;
int available_bw;
/*
* Find pair of inactive DP IN and DP OUT adapters and then
@ -589,17 +795,21 @@ static void tb_tunnel_dp(struct tb *tb)
in = NULL;
out = NULL;
list_for_each_entry(port, &tcm->dp_resources, list) {
if (!tb_port_is_dpin(port))
continue;
if (tb_port_is_enabled(port)) {
tb_port_dbg(port, "in use\n");
continue;
}
tb_port_dbg(port, "available\n");
tb_port_dbg(port, "DP IN available\n");
if (!in && tb_port_is_dpin(port))
out = tb_find_dp_out(tb, port);
if (out) {
in = port;
else if (!out && tb_port_is_dpout(port))
out = port;
break;
}
}
if (!in) {
@ -616,32 +826,41 @@ static void tb_tunnel_dp(struct tb *tb)
return;
}
/* Calculate available bandwidth between in and out */
available_bw = tb_available_bw(tcm, in, out);
if (available_bw < 0) {
tb_warn(tb, "failed to determine available bandwidth\n");
return;
/* Make all unused USB3 bandwidth available for the new DP tunnel */
ret = tb_release_unused_usb3_bandwidth(tb, in, out);
if (ret) {
tb_warn(tb, "failed to release unused bandwidth\n");
goto err_dealloc_dp;
}
tb_dbg(tb, "available bandwidth for new DP tunnel %u Mb/s\n",
available_bw);
ret = tb_available_bandwidth(tb, in, out, &available_up,
&available_down);
if (ret)
goto err_reclaim;
tunnel = tb_tunnel_alloc_dp(tb, in, out, available_bw);
tb_dbg(tb, "available bandwidth for new DP tunnel %u/%u Mb/s\n",
available_up, available_down);
tunnel = tb_tunnel_alloc_dp(tb, in, out, available_up, available_down);
if (!tunnel) {
tb_port_dbg(out, "could not allocate DP tunnel\n");
goto dealloc_dp;
goto err_reclaim;
}
if (tb_tunnel_activate(tunnel)) {
tb_port_info(out, "DP tunnel activation failed, aborting\n");
tb_tunnel_free(tunnel);
goto dealloc_dp;
goto err_free;
}
list_add_tail(&tunnel->list, &tcm->tunnel_list);
tb_reclaim_usb3_bandwidth(tb, in, out);
return;
dealloc_dp:
err_free:
tb_tunnel_free(tunnel);
err_reclaim:
tb_reclaim_usb3_bandwidth(tb, in, out);
err_dealloc_dp:
tb_switch_dealloc_dp_resource(in->sw, in);
}
@ -827,6 +1046,8 @@ static void tb_handle_hotplug(struct work_struct *work)
goto put_sw;
}
if (ev->unplug) {
tb_retimer_remove_all(port);
if (tb_port_has_remote(port)) {
tb_port_dbg(port, "switch unplugged\n");
tb_sw_set_unplugged(port->remote->sw);
@ -1071,6 +1292,7 @@ static int tb_free_unplugged_xdomains(struct tb_switch *sw)
if (tb_is_upstream_port(port))
continue;
if (port->xdomain && port->xdomain->is_unplugged) {
tb_retimer_remove_all(port);
tb_xdomain_remove(port->xdomain);
port->xdomain = NULL;
ret++;

131
drivers/thunderbolt/tb.h
View File

@ -18,8 +18,17 @@
#include "ctl.h"
#include "dma_port.h"
#define NVM_MIN_SIZE SZ_32K
#define NVM_MAX_SIZE SZ_512K
/* Intel specific NVM offsets */
#define NVM_DEVID 0x05
#define NVM_VERSION 0x08
#define NVM_FLASH_SIZE 0x45
/**
* struct tb_switch_nvm - Structure holding switch NVM information
* struct tb_nvm - Structure holding NVM information
* @dev: Owner of the NVM
* @major: Major version number of the active NVM portion
* @minor: Minor version number of the active NVM portion
* @id: Identifier used with both NVM portions
@ -29,9 +38,14 @@
* the actual NVM flash device
* @buf_data_size: Number of bytes actually consumed by the new NVM
* image
* @authenticating: The switch is authenticating the new NVM
* @authenticating: The device is authenticating the new NVM
* @flushed: The image has been flushed to the storage area
*
* The user of this structure needs to handle serialization of possible
* concurrent access.
*/
struct tb_switch_nvm {
struct tb_nvm {
struct device *dev;
u8 major;
u8 minor;
int id;
@ -40,6 +54,7 @@ struct tb_switch_nvm {
void *buf;
size_t buf_data_size;
bool authenticating;
bool flushed;
};
#define TB_SWITCH_KEY_SIZE 32
@ -97,6 +112,7 @@ struct tb_switch_tmu {
* @device_name: Name of the device (or %NULL if not known)
* @link_speed: Speed of the link in Gb/s
* @link_width: Width of the link (1 or 2)
* @link_usb4: Upstream link is USB4
* @generation: Switch Thunderbolt generation
* @cap_plug_events: Offset to the plug events capability (%0 if not found)
* @cap_lc: Offset to the link controller capability (%0 if not found)
@ -117,6 +133,7 @@ struct tb_switch_tmu {
* @depth: Depth in the chain this switch is connected (ICM only)
* @rpm_complete: Completion used to wait for runtime resume to
* complete (ICM only)
* @quirks: Quirks used for this Thunderbolt switch
*
* When the switch is being added or removed to the domain (other
* switches) you need to have domain lock held.
@ -136,12 +153,13 @@ struct tb_switch {
const char *device_name;
unsigned int link_speed;
unsigned int link_width;
bool link_usb4;
unsigned int generation;
int cap_plug_events;
int cap_lc;
bool is_unplugged;
u8 *drom;
struct tb_switch_nvm *nvm;
struct tb_nvm *nvm;
bool no_nvm_upgrade;
bool safe_mode;
bool boot;
@ -154,6 +172,7 @@ struct tb_switch {
u8 link;
u8 depth;
struct completion rpm_complete;
unsigned long quirks;
};
/**
@ -195,6 +214,28 @@ struct tb_port {
struct list_head list;
};
/**
* tb_retimer: Thunderbolt retimer
* @dev: Device for the retimer
* @tb: Pointer to the domain the retimer belongs to
* @index: Retimer index facing the router USB4 port
* @vendor: Vendor ID of the retimer
* @device: Device ID of the retimer
* @port: Pointer to the lane 0 adapter
* @nvm: Pointer to the NVM if the retimer has one (%NULL otherwise)
* @auth_status: Status of last NVM authentication
*/
struct tb_retimer {
struct device dev;
struct tb *tb;
u8 index;
u32 vendor;
u32 device;
struct tb_port *port;
struct tb_nvm *nvm;
u32 auth_status;
};
/**
* struct tb_path_hop - routing information for a tb_path
* @in_port: Ingress port of a switch
@ -286,7 +327,11 @@ struct tb_path {
/* HopIDs 0-7 are reserved by the Thunderbolt protocol */
#define TB_PATH_MIN_HOPID 8
#define TB_PATH_MAX_HOPS 7
/*
* Support paths from the farthest (depth 6) router to the host and back
* to the same level (not necessarily to the same router).
*/
#define TB_PATH_MAX_HOPS (7 * 2)
/**
* struct tb_cm_ops - Connection manager specific operations vector
@ -534,11 +579,11 @@ struct tb *icm_probe(struct tb_nhi *nhi);
struct tb *tb_probe(struct tb_nhi *nhi);
extern struct device_type tb_domain_type;
extern struct device_type tb_retimer_type;
extern struct device_type tb_switch_type;
int tb_domain_init(void);
void tb_domain_exit(void);
void tb_switch_exit(void);
int tb_xdomain_init(void);
void tb_xdomain_exit(void);
@ -571,6 +616,15 @@ static inline void tb_domain_put(struct tb *tb)
put_device(&tb->dev);
}
struct tb_nvm *tb_nvm_alloc(struct device *dev);
int tb_nvm_add_active(struct tb_nvm *nvm, size_t size, nvmem_reg_read_t reg_read);
int tb_nvm_write_buf(struct tb_nvm *nvm, unsigned int offset, void *val,
size_t bytes);
int tb_nvm_add_non_active(struct tb_nvm *nvm, size_t size,
nvmem_reg_write_t reg_write);
void tb_nvm_free(struct tb_nvm *nvm);
void tb_nvm_exit(void);
struct tb_switch *tb_switch_alloc(struct tb *tb, struct device *parent,
u64 route);
struct tb_switch *tb_switch_alloc_safe_mode(struct tb *tb,
@ -741,6 +795,20 @@ void tb_port_release_out_hopid(struct tb_port *port, int hopid);
struct tb_port *tb_next_port_on_path(struct tb_port *start, struct tb_port *end,
struct tb_port *prev);
/**
* tb_for_each_port_on_path() - Iterate over each port on path
* @src: Source port
* @dst: Destination port
* @p: Port used as iterator
*
* Walks over each port on path from @src to @dst.
*/
#define tb_for_each_port_on_path(src, dst, p) \
for ((p) = tb_next_port_on_path((src), (dst), NULL); (p); \
(p) = tb_next_port_on_path((src), (dst), (p)))
int tb_port_get_link_speed(struct tb_port *port);
int tb_switch_find_vse_cap(struct tb_switch *sw, enum tb_switch_vse_cap vsec);
int tb_switch_find_cap(struct tb_switch *sw, enum tb_switch_cap cap);
int tb_port_find_cap(struct tb_port *port, enum tb_port_cap cap);
@ -769,8 +837,8 @@ void tb_path_free(struct tb_path *path);
int tb_path_activate(struct tb_path *path);
void tb_path_deactivate(struct tb_path *path);
bool tb_path_is_invalid(struct tb_path *path);
bool tb_path_switch_on_path(const struct tb_path *path,
const struct tb_switch *sw);
bool tb_path_port_on_path(const struct tb_path *path,
const struct tb_port *port);
int tb_drom_read(struct tb_switch *sw);
int tb_drom_read_uid_only(struct tb_switch *sw, u64 *uid);
@ -783,6 +851,7 @@ bool tb_lc_lane_bonding_possible(struct tb_switch *sw);
bool tb_lc_dp_sink_query(struct tb_switch *sw, struct tb_port *in);
int tb_lc_dp_sink_alloc(struct tb_switch *sw, struct tb_port *in);
int tb_lc_dp_sink_dealloc(struct tb_switch *sw, struct tb_port *in);
int tb_lc_force_power(struct tb_switch *sw);
static inline int tb_route_length(u64 route)
{
@ -812,6 +881,21 @@ void tb_xdomain_remove(struct tb_xdomain *xd);
struct tb_xdomain *tb_xdomain_find_by_link_depth(struct tb *tb, u8 link,
u8 depth);
int tb_retimer_scan(struct tb_port *port);
void tb_retimer_remove_all(struct tb_port *port);
static inline bool tb_is_retimer(const struct device *dev)
{
return dev->type == &tb_retimer_type;
}
static inline struct tb_retimer *tb_to_retimer(struct device *dev)
{
if (tb_is_retimer(dev))
return container_of(dev, struct tb_retimer, dev);
return NULL;
}
int usb4_switch_setup(struct tb_switch *sw);
int usb4_switch_read_uid(struct tb_switch *sw, u64 *uid);
int usb4_switch_drom_read(struct tb_switch *sw, unsigned int address, void *buf,
@ -835,4 +919,35 @@ struct tb_port *usb4_switch_map_usb3_down(struct tb_switch *sw,
const struct tb_port *port);
int usb4_port_unlock(struct tb_port *port);
int usb4_port_enumerate_retimers(struct tb_port *port);
int usb4_port_retimer_read(struct tb_port *port, u8 index, u8 reg, void *buf,
u8 size);
int usb4_port_retimer_write(struct tb_port *port, u8 index, u8 reg,
const void *buf, u8 size);
int usb4_port_retimer_is_last(struct tb_port *port, u8 index);
int usb4_port_retimer_nvm_sector_size(struct tb_port *port, u8 index);
int usb4_port_retimer_nvm_write(struct tb_port *port, u8 index,
unsigned int address, const void *buf,
size_t size);
int usb4_port_retimer_nvm_authenticate(struct tb_port *port, u8 index);
int usb4_port_retimer_nvm_authenticate_status(struct tb_port *port, u8 index,
u32 *status);
int usb4_port_retimer_nvm_read(struct tb_port *port, u8 index,
unsigned int address, void *buf, size_t size);
int usb4_usb3_port_max_link_rate(struct tb_port *port);
int usb4_usb3_port_actual_link_rate(struct tb_port *port);
int usb4_usb3_port_allocated_bandwidth(struct tb_port *port, int *upstream_bw,
int *downstream_bw);
int usb4_usb3_port_allocate_bandwidth(struct tb_port *port, int *upstream_bw,
int *downstream_bw);
int usb4_usb3_port_release_bandwidth(struct tb_port *port, int *upstream_bw,
int *downstream_bw);
/* keep link controller awake during update */
#define QUIRK_FORCE_POWER_LINK_CONTROLLER BIT(0)
void tb_check_quirks(struct tb_switch *sw);
#endif

31
drivers/thunderbolt/tb_regs.h
View File

@ -288,8 +288,19 @@ struct tb_regs_port_header {
#define LANE_ADP_CS_1_CURRENT_WIDTH_SHIFT 20
/* USB4 port registers */
#define PORT_CS_1 0x01
#define PORT_CS_1_LENGTH_SHIFT 8
#define PORT_CS_1_TARGET_MASK GENMASK(18, 16)
#define PORT_CS_1_TARGET_SHIFT 16
#define PORT_CS_1_RETIMER_INDEX_SHIFT 20
#define PORT_CS_1_WNR_WRITE BIT(24)
#define PORT_CS_1_NR BIT(25)
#define PORT_CS_1_RC BIT(26)
#define PORT_CS_1_PND BIT(31)
#define PORT_CS_2 0x02
#define PORT_CS_18 0x12
#define PORT_CS_18_BE BIT(8)
#define PORT_CS_18_TCM BIT(9)
#define PORT_CS_19 0x13
#define PORT_CS_19_PC BIT(3)
@ -337,6 +348,25 @@ struct tb_regs_port_header {
#define ADP_USB3_CS_0 0x00
#define ADP_USB3_CS_0_V BIT(30)
#define ADP_USB3_CS_0_PE BIT(31)
#define ADP_USB3_CS_1 0x01
#define ADP_USB3_CS_1_CUBW_MASK GENMASK(11, 0)
#define ADP_USB3_CS_1_CDBW_MASK GENMASK(23, 12)
#define ADP_USB3_CS_1_CDBW_SHIFT 12
#define ADP_USB3_CS_1_HCA BIT(31)
#define ADP_USB3_CS_2 0x02
#define ADP_USB3_CS_2_AUBW_MASK GENMASK(11, 0)
#define ADP_USB3_CS_2_ADBW_MASK GENMASK(23, 12)
#define ADP_USB3_CS_2_ADBW_SHIFT 12
#define ADP_USB3_CS_2_CMR BIT(31)
#define ADP_USB3_CS_3 0x03
#define ADP_USB3_CS_3_SCALE_MASK GENMASK(5, 0)
#define ADP_USB3_CS_4 0x04
#define ADP_USB3_CS_4_ALR_MASK GENMASK(6, 0)
#define ADP_USB3_CS_4_ALR_20G 0x1
#define ADP_USB3_CS_4_ULV BIT(7)
#define ADP_USB3_CS_4_MSLR_MASK GENMASK(18, 12)
#define ADP_USB3_CS_4_MSLR_SHIFT 12
#define ADP_USB3_CS_4_MSLR_20G 0x1
/* Hop register from TB_CFG_HOPS. 8 byte per entry. */
struct tb_regs_hop {
@ -379,6 +409,7 @@ struct tb_regs_hop {
#define TB_LC_SNK_ALLOCATION_SNK1_SHIFT 4
#define TB_LC_SNK_ALLOCATION_SNK1_MASK GENMASK(7, 4)
#define TB_LC_SNK_ALLOCATION_SNK1_CM 0x1
#define TB_LC_POWER 0x740
/* Link controller registers */
#define TB_LC_PORT_ATTR 0x8d

1626
drivers/thunderbolt/test.c Normal file
View File

File diff suppressed because it is too large Load Diff

314
drivers/thunderbolt/tunnel.c
View File

@ -124,8 +124,9 @@ static void tb_pci_init_path(struct tb_path *path)
path->drop_packages = 0;
path->nfc_credits = 0;
path->hops[0].initial_credits = 7;
path->hops[1].initial_credits =
tb_initial_credits(path->hops[1].in_port->sw);
if (path->path_length > 1)
path->hops[1].initial_credits =
tb_initial_credits(path->hops[1].in_port->sw);
}
/**
@ -422,7 +423,7 @@ static int tb_dp_xchg_caps(struct tb_tunnel *tunnel)
u32 out_dp_cap, out_rate, out_lanes, in_dp_cap, in_rate, in_lanes, bw;
struct tb_port *out = tunnel->dst_port;
struct tb_port *in = tunnel->src_port;
int ret;
int ret, max_bw;
/*
* Copy DP_LOCAL_CAP register to DP_REMOTE_CAP register for
@ -471,10 +472,15 @@ static int tb_dp_xchg_caps(struct tb_tunnel *tunnel)
tb_port_dbg(out, "maximum supported bandwidth %u Mb/s x%u = %u Mb/s\n",
out_rate, out_lanes, bw);
if (tunnel->max_bw && bw > tunnel->max_bw) {
if (in->sw->config.depth < out->sw->config.depth)
max_bw = tunnel->max_down;
else
max_bw = tunnel->max_up;
if (max_bw && bw > max_bw) {
u32 new_rate, new_lanes, new_bw;
ret = tb_dp_reduce_bandwidth(tunnel->max_bw, in_rate, in_lanes,
ret = tb_dp_reduce_bandwidth(max_bw, in_rate, in_lanes,
out_rate, out_lanes, &new_rate,
&new_lanes);
if (ret) {
@ -535,7 +541,8 @@ static int tb_dp_activate(struct tb_tunnel *tunnel, bool active)
return 0;
}
static int tb_dp_consumed_bandwidth(struct tb_tunnel *tunnel)
static int tb_dp_consumed_bandwidth(struct tb_tunnel *tunnel, int *consumed_up,
int *consumed_down)
{
struct tb_port *in = tunnel->src_port;
const struct tb_switch *sw = in->sw;
@ -543,7 +550,7 @@ static int tb_dp_consumed_bandwidth(struct tb_tunnel *tunnel)
int ret;
if (tb_dp_is_usb4(sw)) {
int timeout = 10;
int timeout = 20;
/*
* Wait for DPRX done. Normally it should be already set
@ -579,10 +586,20 @@ static int tb_dp_consumed_bandwidth(struct tb_tunnel *tunnel)
lanes = tb_dp_cap_get_lanes(val);
} else {
/* No bandwidth management for legacy devices */
*consumed_up = 0;
*consumed_down = 0;
return 0;
}
return tb_dp_bandwidth(rate, lanes);
if (in->sw->config.depth < tunnel->dst_port->sw->config.depth) {
*consumed_up = 0;
*consumed_down = tb_dp_bandwidth(rate, lanes);
} else {
*consumed_up = tb_dp_bandwidth(rate, lanes);
*consumed_down = 0;
}
return 0;
}
static void tb_dp_init_aux_path(struct tb_path *path)
@ -708,7 +725,10 @@ err_free:
* @tb: Pointer to the domain structure
* @in: DP in adapter port
* @out: DP out adapter port
* @max_bw: Maximum available bandwidth for the DP tunnel (%0 if not limited)
* @max_up: Maximum available upstream bandwidth for the DP tunnel (%0
* if not limited)
* @max_down: Maximum available downstream bandwidth for the DP tunnel
* (%0 if not limited)
*
* Allocates a tunnel between @in and @out that is capable of tunneling
* Display Port traffic.
@ -716,7 +736,8 @@ err_free:
* Return: Returns a tb_tunnel on success or NULL on failure.
*/
struct tb_tunnel *tb_tunnel_alloc_dp(struct tb *tb, struct tb_port *in,
struct tb_port *out, int max_bw)
struct tb_port *out, int max_up,
int max_down)
{
struct tb_tunnel *tunnel;
struct tb_path **paths;
@ -734,7 +755,8 @@ struct tb_tunnel *tb_tunnel_alloc_dp(struct tb *tb, struct tb_port *in,
tunnel->consumed_bandwidth = tb_dp_consumed_bandwidth;
tunnel->src_port = in;
tunnel->dst_port = out;
tunnel->max_bw = max_bw;
tunnel->max_up = max_up;
tunnel->max_down = max_down;
paths = tunnel->paths;
@ -854,6 +876,33 @@ struct tb_tunnel *tb_tunnel_alloc_dma(struct tb *tb, struct tb_port *nhi,
return tunnel;
}
static int tb_usb3_max_link_rate(struct tb_port *up, struct tb_port *down)
{
int ret, up_max_rate, down_max_rate;
ret = usb4_usb3_port_max_link_rate(up);
if (ret < 0)
return ret;
up_max_rate = ret;
ret = usb4_usb3_port_max_link_rate(down);
if (ret < 0)
return ret;
down_max_rate = ret;
return min(up_max_rate, down_max_rate);
}
static int tb_usb3_init(struct tb_tunnel *tunnel)
{
tb_tunnel_dbg(tunnel, "allocating initial bandwidth %d/%d Mb/s\n",
tunnel->allocated_up, tunnel->allocated_down);
return usb4_usb3_port_allocate_bandwidth(tunnel->src_port,
&tunnel->allocated_up,
&tunnel->allocated_down);
}
static int tb_usb3_activate(struct tb_tunnel *tunnel, bool activate)
{
int res;
@ -868,6 +917,86 @@ static int tb_usb3_activate(struct tb_tunnel *tunnel, bool activate)
return 0;
}
static int tb_usb3_consumed_bandwidth(struct tb_tunnel *tunnel,
int *consumed_up, int *consumed_down)
{
/*
* PCIe tunneling affects the USB3 bandwidth so take that it
* into account here.
*/
*consumed_up = tunnel->allocated_up * (3 + 1) / 3;
*consumed_down = tunnel->allocated_down * (3 + 1) / 3;
return 0;
}
static int tb_usb3_release_unused_bandwidth(struct tb_tunnel *tunnel)
{
int ret;
ret = usb4_usb3_port_release_bandwidth(tunnel->src_port,
&tunnel->allocated_up,
&tunnel->allocated_down);
if (ret)
return ret;
tb_tunnel_dbg(tunnel, "decreased bandwidth allocation to %d/%d Mb/s\n",
tunnel->allocated_up, tunnel->allocated_down);
return 0;
}
static void tb_usb3_reclaim_available_bandwidth(struct tb_tunnel *tunnel,
int *available_up,
int *available_down)
{
int ret, max_rate, allocate_up, allocate_down;
ret = usb4_usb3_port_actual_link_rate(tunnel->src_port);
if (ret <= 0) {
tb_tunnel_warn(tunnel, "tunnel is not up\n");
return;
}
/*
* 90% of the max rate can be allocated for isochronous
* transfers.
*/
max_rate = ret * 90 / 100;
/* No need to reclaim if already at maximum */
if (tunnel->allocated_up >= max_rate &&
tunnel->allocated_down >= max_rate)
return;
/* Don't go lower than what is already allocated */
allocate_up = min(max_rate, *available_up);
if (allocate_up < tunnel->allocated_up)
allocate_up = tunnel->allocated_up;
allocate_down = min(max_rate, *available_down);
if (allocate_down < tunnel->allocated_down)
allocate_down = tunnel->allocated_down;
/* If no changes no need to do more */
if (allocate_up == tunnel->allocated_up &&
allocate_down == tunnel->allocated_down)
return;
ret = usb4_usb3_port_allocate_bandwidth(tunnel->src_port, &allocate_up,
&allocate_down);
if (ret) {
tb_tunnel_info(tunnel, "failed to allocate bandwidth\n");
return;
}
tunnel->allocated_up = allocate_up;
*available_up -= tunnel->allocated_up;
tunnel->allocated_down = allocate_down;
*available_down -= tunnel->allocated_down;
tb_tunnel_dbg(tunnel, "increased bandwidth allocation to %d/%d Mb/s\n",
tunnel->allocated_up, tunnel->allocated_down);
}
static void tb_usb3_init_path(struct tb_path *path)
{
path->egress_fc_enable = TB_PATH_SOURCE | TB_PATH_INTERNAL;
@ -879,8 +1008,9 @@ static void tb_usb3_init_path(struct tb_path *path)
path->drop_packages = 0;
path->nfc_credits = 0;
path->hops[0].initial_credits = 7;
path->hops[1].initial_credits =
tb_initial_credits(path->hops[1].in_port->sw);
if (path->path_length > 1)
path->hops[1].initial_credits =
tb_initial_credits(path->hops[1].in_port->sw);
}
/**
@ -947,6 +1077,29 @@ struct tb_tunnel *tb_tunnel_discover_usb3(struct tb *tb, struct tb_port *down)
goto err_deactivate;
}
if (!tb_route(down->sw)) {
int ret;
/*
* Read the initial bandwidth allocation for the first
* hop tunnel.
*/
ret = usb4_usb3_port_allocated_bandwidth(down,
&tunnel->allocated_up, &tunnel->allocated_down);
if (ret)
goto err_deactivate;
tb_tunnel_dbg(tunnel, "currently allocated bandwidth %d/%d Mb/s\n",
tunnel->allocated_up, tunnel->allocated_down);
tunnel->init = tb_usb3_init;
tunnel->consumed_bandwidth = tb_usb3_consumed_bandwidth;
tunnel->release_unused_bandwidth =
tb_usb3_release_unused_bandwidth;
tunnel->reclaim_available_bandwidth =
tb_usb3_reclaim_available_bandwidth;
}
tb_tunnel_dbg(tunnel, "discovered\n");
return tunnel;
@ -963,6 +1116,10 @@ err_free:
* @tb: Pointer to the domain structure
* @up: USB3 upstream adapter port
* @down: USB3 downstream adapter port
* @max_up: Maximum available upstream bandwidth for the USB3 tunnel (%0
* if not limited).
* @max_down: Maximum available downstream bandwidth for the USB3 tunnel
* (%0 if not limited).
*
* Allocate an USB3 tunnel. The ports must be of type @TB_TYPE_USB3_UP and
* @TB_TYPE_USB3_DOWN.
@ -970,10 +1127,32 @@ err_free:
* Return: Returns a tb_tunnel on success or %NULL on failure.
*/
struct tb_tunnel *tb_tunnel_alloc_usb3(struct tb *tb, struct tb_port *up,
struct tb_port *down)
struct tb_port *down, int max_up,
int max_down)
{
struct tb_tunnel *tunnel;
struct tb_path *path;
int max_rate = 0;
/*
* Check that we have enough bandwidth available for the new
* USB3 tunnel.
*/
if (max_up > 0 || max_down > 0) {
max_rate = tb_usb3_max_link_rate(down, up);
if (max_rate < 0)
return NULL;
/* Only 90% can be allocated for USB3 isochronous transfers */
max_rate = max_rate * 90 / 100;
tb_port_dbg(up, "required bandwidth for USB3 tunnel %d Mb/s\n",
max_rate);
if (max_rate > max_up || max_rate > max_down) {
tb_port_warn(up, "not enough bandwidth for USB3 tunnel\n");
return NULL;
}
}
tunnel = tb_tunnel_alloc(tb, 2, TB_TUNNEL_USB3);
if (!tunnel)
@ -982,6 +1161,8 @@ struct tb_tunnel *tb_tunnel_alloc_usb3(struct tb *tb, struct tb_port *up,
tunnel->activate = tb_usb3_activate;
tunnel->src_port = down;
tunnel->dst_port = up;
tunnel->max_up = max_up;
tunnel->max_down = max_down;
path = tb_path_alloc(tb, down, TB_USB3_HOPID, up, TB_USB3_HOPID, 0,
"USB3 Down");
@ -1001,6 +1182,18 @@ struct tb_tunnel *tb_tunnel_alloc_usb3(struct tb *tb, struct tb_port *up,
tb_usb3_init_path(path);
tunnel->paths[TB_USB3_PATH_UP] = path;
if (!tb_route(down->sw)) {
tunnel->allocated_up = max_rate;
tunnel->allocated_down = max_rate;
tunnel->init = tb_usb3_init;
tunnel->consumed_bandwidth = tb_usb3_consumed_bandwidth;
tunnel->release_unused_bandwidth =
tb_usb3_release_unused_bandwidth;
tunnel->reclaim_available_bandwidth =
tb_usb3_reclaim_available_bandwidth;
}
return tunnel;
}
@ -1133,22 +1326,23 @@ void tb_tunnel_deactivate(struct tb_tunnel *tunnel)
}
/**
* tb_tunnel_switch_on_path() - Does the tunnel go through switch
* tb_tunnel_port_on_path() - Does the tunnel go through port
* @tunnel: Tunnel to check
* @sw: Switch to check
* @port: Port to check
*
* Returns true if @tunnel goes through @sw (direction does not matter),
* Returns true if @tunnel goes through @port (direction does not matter),
* false otherwise.
*/
bool tb_tunnel_switch_on_path(const struct tb_tunnel *tunnel,
const struct tb_switch *sw)
bool tb_tunnel_port_on_path(const struct tb_tunnel *tunnel,
const struct tb_port *port)
{
int i;
for (i = 0; i < tunnel->npaths; i++) {
if (!tunnel->paths[i])
continue;
if (tb_path_switch_on_path(tunnel->paths[i], sw))
if (tb_path_port_on_path(tunnel->paths[i], port))
return true;
}
@ -1172,21 +1366,87 @@ static bool tb_tunnel_is_active(const struct tb_tunnel *tunnel)
/**
* tb_tunnel_consumed_bandwidth() - Return bandwidth consumed by the tunnel
* @tunnel: Tunnel to check
* @consumed_up: Consumed bandwidth in Mb/s from @dst_port to @src_port.
* Can be %NULL.
* @consumed_down: Consumed bandwidth in Mb/s from @src_port to @dst_port.
* Can be %NULL.
*
* Returns bandwidth currently consumed by @tunnel and %0 if the @tunnel
* is not active or does consume bandwidth.
* Stores the amount of isochronous bandwidth @tunnel consumes in
* @consumed_up and @consumed_down. In case of success returns %0,
* negative errno otherwise.
*/
int tb_tunnel_consumed_bandwidth(struct tb_tunnel *tunnel)
int tb_tunnel_consumed_bandwidth(struct tb_tunnel *tunnel, int *consumed_up,
int *consumed_down)
{
int up_bw = 0, down_bw = 0;
if (!tb_tunnel_is_active(tunnel))
goto out;
if (tunnel->consumed_bandwidth) {
int ret;
ret = tunnel->consumed_bandwidth(tunnel, &up_bw, &down_bw);
if (ret)
return ret;
tb_tunnel_dbg(tunnel, "consumed bandwidth %d/%d Mb/s\n", up_bw,
down_bw);
}
out:
if (consumed_up)
*consumed_up = up_bw;
if (consumed_down)
*consumed_down = down_bw;
return 0;
}
/**
* tb_tunnel_release_unused_bandwidth() - Release unused bandwidth
* @tunnel: Tunnel whose unused bandwidth to release
*
* If tunnel supports dynamic bandwidth management (USB3 tunnels at the
* moment) this function makes it to release all the unused bandwidth.
*
* Returns %0 in case of success and negative errno otherwise.
*/
int tb_tunnel_release_unused_bandwidth(struct tb_tunnel *tunnel)
{
if (!tb_tunnel_is_active(tunnel))
return 0;
if (tunnel->consumed_bandwidth) {
int ret = tunnel->consumed_bandwidth(tunnel);
if (tunnel->release_unused_bandwidth) {
int ret;
tb_tunnel_dbg(tunnel, "consumed bandwidth %d Mb/s\n", ret);
return ret;
ret = tunnel->release_unused_bandwidth(tunnel);
if (ret)
return ret;
}
return 0;
}
/**
* tb_tunnel_reclaim_available_bandwidth() - Reclaim available bandwidth
* @tunnel: Tunnel reclaiming available bandwidth
* @available_up: Available upstream bandwidth (in Mb/s)
* @available_down: Available downstream bandwidth (in Mb/s)
*
* Reclaims bandwidth from @available_up and @available_down and updates
* the variables accordingly (e.g decreases both according to what was
* reclaimed by the tunnel). If nothing was reclaimed the values are
* kept as is.
*/
void tb_tunnel_reclaim_available_bandwidth(struct tb_tunnel *tunnel,
int *available_up,
int *available_down)
{
if (!tb_tunnel_is_active(tunnel))
return;
if (tunnel->reclaim_available_bandwidth)
tunnel->reclaim_available_bandwidth(tunnel, available_up,
available_down);
}

37
drivers/thunderbolt/tunnel.h
View File

@ -29,10 +29,16 @@ enum tb_tunnel_type {
* @init: Optional tunnel specific initialization
* @activate: Optional tunnel specific activation/deactivation
* @consumed_bandwidth: Return how much bandwidth the tunnel consumes
* @release_unused_bandwidth: Release all unused bandwidth
* @reclaim_available_bandwidth: Reclaim back available bandwidth
* @list: Tunnels are linked using this field
* @type: Type of the tunnel
* @max_bw: Maximum bandwidth (Mb/s) available for the tunnel (only for DP).
* @max_up: Maximum upstream bandwidth (Mb/s) available for the tunnel.
* Only set if the bandwidth needs to be limited.
* @max_down: Maximum downstream bandwidth (Mb/s) available for the tunnel.
* Only set if the bandwidth needs to be limited.
* @allocated_up: Allocated upstream bandwidth (only for USB3)
* @allocated_down: Allocated downstream bandwidth (only for USB3)
*/
struct tb_tunnel {
struct tb *tb;
@ -42,10 +48,18 @@ struct tb_tunnel {
size_t npaths;
int (*init)(struct tb_tunnel *tunnel);
int (*activate)(struct tb_tunnel *tunnel, bool activate);
int (*consumed_bandwidth)(struct tb_tunnel *tunnel);
int (*consumed_bandwidth)(struct tb_tunnel *tunnel, int *consumed_up,
int *consumed_down);
int (*release_unused_bandwidth)(struct tb_tunnel *tunnel);
void (*reclaim_available_bandwidth)(struct tb_tunnel *tunnel,
int *available_up,
int *available_down);
struct list_head list;
enum tb_tunnel_type type;
unsigned int max_bw;
int max_up;
int max_down;
int allocated_up;
int allocated_down;
};
struct tb_tunnel *tb_tunnel_discover_pci(struct tb *tb, struct tb_port *down);
@ -53,23 +67,30 @@ struct tb_tunnel *tb_tunnel_alloc_pci(struct tb *tb, struct tb_port *up,
struct tb_port *down);
struct tb_tunnel *tb_tunnel_discover_dp(struct tb *tb, struct tb_port *in);
struct tb_tunnel *tb_tunnel_alloc_dp(struct tb *tb, struct tb_port *in,
struct tb_port *out, int max_bw);
struct tb_port *out, int max_up,
int max_down);
struct tb_tunnel *tb_tunnel_alloc_dma(struct tb *tb, struct tb_port *nhi,
struct tb_port *dst, int transmit_ring,
int transmit_path, int receive_ring,
int receive_path);
struct tb_tunnel *tb_tunnel_discover_usb3(struct tb *tb, struct tb_port *down);
struct tb_tunnel *tb_tunnel_alloc_usb3(struct tb *tb, struct tb_port *up,
struct tb_port *down);
struct tb_port *down, int max_up,
int max_down);
void tb_tunnel_free(struct tb_tunnel *tunnel);
int tb_tunnel_activate(struct tb_tunnel *tunnel);
int tb_tunnel_restart(struct tb_tunnel *tunnel);
void tb_tunnel_deactivate(struct tb_tunnel *tunnel);
bool tb_tunnel_is_invalid(struct tb_tunnel *tunnel);
bool tb_tunnel_switch_on_path(const struct tb_tunnel *tunnel,
const struct tb_switch *sw);
int tb_tunnel_consumed_bandwidth(struct tb_tunnel *tunnel);
bool tb_tunnel_port_on_path(const struct tb_tunnel *tunnel,
const struct tb_port *port);
int tb_tunnel_consumed_bandwidth(struct tb_tunnel *tunnel, int *consumed_up,
int *consumed_down);
int tb_tunnel_release_unused_bandwidth(struct tb_tunnel *tunnel);
void tb_tunnel_reclaim_available_bandwidth(struct tb_tunnel *tunnel,
int *available_up,
int *available_down);
static inline bool tb_tunnel_is_pci(const struct tb_tunnel *tunnel)
{

874
drivers/thunderbolt/usb4.c
View File

@ -10,6 +10,7 @@
#include <linux/delay.h>
#include <linux/ktime.h>
#include "sb_regs.h"
#include "tb.h"
#define USB4_DATA_DWORDS 16
@ -27,6 +28,12 @@ enum usb4_switch_op {
USB4_SWITCH_OP_NVM_SECTOR_SIZE = 0x25,
};
enum usb4_sb_target {
USB4_SB_TARGET_ROUTER,
USB4_SB_TARGET_PARTNER,
USB4_SB_TARGET_RETIMER,
};
#define USB4_NVM_READ_OFFSET_MASK GENMASK(23, 2)
#define USB4_NVM_READ_OFFSET_SHIFT 2
#define USB4_NVM_READ_LENGTH_MASK GENMASK(27, 24)
@ -42,8 +49,8 @@ enum usb4_switch_op {
#define USB4_NVM_SECTOR_SIZE_MASK GENMASK(23, 0)
typedef int (*read_block_fn)(struct tb_switch *, unsigned int, void *, size_t);
typedef int (*write_block_fn)(struct tb_switch *, const void *, size_t);
typedef int (*read_block_fn)(void *, unsigned int, void *, size_t);
typedef int (*write_block_fn)(void *, const void *, size_t);
static int usb4_switch_wait_for_bit(struct tb_switch *sw, u32 offset, u32 bit,
u32 value, int timeout_msec)
@ -95,8 +102,8 @@ static int usb4_switch_op_write_metadata(struct tb_switch *sw, u32 metadata)
return tb_sw_write(sw, &metadata, TB_CFG_SWITCH, ROUTER_CS_25, 1);
}
static int usb4_switch_do_read_data(struct tb_switch *sw, u16 address,
void *buf, size_t size, read_block_fn read_block)
static int usb4_do_read_data(u16 address, void *buf, size_t size,
read_block_fn read_block, void *read_block_data)
{
unsigned int retries = USB4_DATA_RETRIES;
unsigned int offset;
@ -113,13 +120,10 @@ static int usb4_switch_do_read_data(struct tb_switch *sw, u16 address,
dwaddress = address / 4;
dwords = ALIGN(nbytes, 4) / 4;
ret = read_block(sw, dwaddress, data, dwords);
ret = read_block(read_block_data, dwaddress, data, dwords);
if (ret) {
if (ret == -ETIMEDOUT) {
if (retries--)
continue;
ret = -EIO;
}
if (ret != -ENODEV && retries--)
continue;
return ret;
}
@ -133,8 +137,8 @@ static int usb4_switch_do_read_data(struct tb_switch *sw, u16 address,
return 0;
}
static int usb4_switch_do_write_data(struct tb_switch *sw, u16 address,
const void *buf, size_t size, write_block_fn write_next_block)
static int usb4_do_write_data(unsigned int address, const void *buf, size_t size,
write_block_fn write_next_block, void *write_block_data)
{
unsigned int retries = USB4_DATA_RETRIES;
unsigned int offset;
@ -149,7 +153,7 @@ static int usb4_switch_do_write_data(struct tb_switch *sw, u16 address,
memcpy(data + offset, buf, nbytes);
ret = write_next_block(sw, data, nbytes / 4);
ret = write_next_block(write_block_data, data, nbytes / 4);
if (ret) {
if (ret == -ETIMEDOUT) {
if (retries--)
@ -192,6 +196,20 @@ static int usb4_switch_op(struct tb_switch *sw, u16 opcode, u8 *status)
return 0;
}
static bool link_is_usb4(struct tb_port *port)
{
u32 val;
if (!port->cap_usb4)
return false;
if (tb_port_read(port, &val, TB_CFG_PORT,
port->cap_usb4 + PORT_CS_18, 1))
return false;
return !(val & PORT_CS_18_TCM);
}
/**
* usb4_switch_setup() - Additional setup for USB4 device
* @sw: USB4 router to setup
@ -205,6 +223,7 @@ static int usb4_switch_op(struct tb_switch *sw, u16 opcode, u8 *status)
*/
int usb4_switch_setup(struct tb_switch *sw)
{
struct tb_port *downstream_port;
struct tb_switch *parent;
bool tbt3, xhci;
u32 val = 0;
@ -217,6 +236,11 @@ int usb4_switch_setup(struct tb_switch *sw)
if (ret)
return ret;
parent = tb_switch_parent(sw);
downstream_port = tb_port_at(tb_route(sw), parent);
sw->link_usb4 = link_is_usb4(downstream_port);
tb_sw_dbg(sw, "link: %s\n", sw->link_usb4 ? "USB4" : "TBT3");
xhci = val & ROUTER_CS_6_HCI;
tbt3 = !(val & ROUTER_CS_6_TNS);
@ -227,9 +251,7 @@ int usb4_switch_setup(struct tb_switch *sw)
if (ret)
return ret;
parent = tb_switch_parent(sw);
if (tb_switch_find_port(parent, TB_TYPE_USB3_DOWN)) {
if (sw->link_usb4 && tb_switch_find_port(parent, TB_TYPE_USB3_DOWN)) {
val |= ROUTER_CS_5_UTO;
xhci = false;
}
@ -271,10 +293,11 @@ int usb4_switch_read_uid(struct tb_switch *sw, u64 *uid)
return tb_sw_read(sw, uid, TB_CFG_SWITCH, ROUTER_CS_7, 2);
}
static int usb4_switch_drom_read_block(struct tb_switch *sw,
static int usb4_switch_drom_read_block(void *data,
unsigned int dwaddress, void *buf,
size_t dwords)
{
struct tb_switch *sw = data;
u8 status = 0;
u32 metadata;
int ret;
@ -311,8 +334,8 @@ static int usb4_switch_drom_read_block(struct tb_switch *sw,
int usb4_switch_drom_read(struct tb_switch *sw, unsigned int address, void *buf,
size_t size)
{
return usb4_switch_do_read_data(sw, address, buf, size,
usb4_switch_drom_read_block);
return usb4_do_read_data(address, buf, size,
usb4_switch_drom_read_block, sw);
}
static int usb4_set_port_configured(struct tb_port *port, bool configured)
@ -445,9 +468,10 @@ int usb4_switch_nvm_sector_size(struct tb_switch *sw)
return metadata & USB4_NVM_SECTOR_SIZE_MASK;
}
static int usb4_switch_nvm_read_block(struct tb_switch *sw,
static int usb4_switch_nvm_read_block(void *data,
unsigned int dwaddress, void *buf, size_t dwords)
{
struct tb_switch *sw = data;
u8 status = 0;
u32 metadata;
int ret;
@ -484,8 +508,8 @@ static int usb4_switch_nvm_read_block(struct tb_switch *sw,
int usb4_switch_nvm_read(struct tb_switch *sw, unsigned int address, void *buf,
size_t size)
{
return usb4_switch_do_read_data(sw, address, buf, size,
usb4_switch_nvm_read_block);
return usb4_do_read_data(address, buf, size,
usb4_switch_nvm_read_block, sw);
}
static int usb4_switch_nvm_set_offset(struct tb_switch *sw,
@ -510,9 +534,10 @@ static int usb4_switch_nvm_set_offset(struct tb_switch *sw,
return status ? -EIO : 0;
}
static int usb4_switch_nvm_write_next_block(struct tb_switch *sw,
const void *buf, size_t dwords)
static int usb4_switch_nvm_write_next_block(void *data, const void *buf,
size_t dwords)
{
struct tb_switch *sw = data;
u8 status;
int ret;
@ -546,8 +571,8 @@ int usb4_switch_nvm_write(struct tb_switch *sw, unsigned int address,
if (ret)
return ret;
return usb4_switch_do_write_data(sw, address, buf, size,
usb4_switch_nvm_write_next_block);
return usb4_do_write_data(address, buf, size,
usb4_switch_nvm_write_next_block, sw);
}
/**
@ -710,7 +735,7 @@ struct tb_port *usb4_switch_map_pcie_down(struct tb_switch *sw,
if (!tb_port_is_pcie_down(p))
continue;
if (pcie_idx == usb4_idx && !tb_pci_port_is_enabled(p))
if (pcie_idx == usb4_idx)
return p;
pcie_idx++;
@ -741,7 +766,7 @@ struct tb_port *usb4_switch_map_usb3_down(struct tb_switch *sw,
if (!tb_port_is_usb3_down(p))
continue;
if (usb_idx == usb4_idx && !tb_usb3_port_is_enabled(p))
if (usb_idx == usb4_idx)
return p;
usb_idx++;
@ -769,3 +794,796 @@ int usb4_port_unlock(struct tb_port *port)
val &= ~ADP_CS_4_LCK;
return tb_port_write(port, &val, TB_CFG_PORT, ADP_CS_4, 1);
}
static int usb4_port_wait_for_bit(struct tb_port *port, u32 offset, u32 bit,
u32 value, int timeout_msec)
{
ktime_t timeout = ktime_add_ms(ktime_get(), timeout_msec);
do {
u32 val;
int ret;
ret = tb_port_read(port, &val, TB_CFG_PORT, offset, 1);
if (ret)
return ret;
if ((val & bit) == value)
return 0;
usleep_range(50, 100);
} while (ktime_before(ktime_get(), timeout));
return -ETIMEDOUT;
}
static int usb4_port_read_data(struct tb_port *port, void *data, size_t dwords)
{
if (dwords > USB4_DATA_DWORDS)
return -EINVAL;
return tb_port_read(port, data, TB_CFG_PORT, port->cap_usb4 + PORT_CS_2,
dwords);
}
static int usb4_port_write_data(struct tb_port *port, const void *data,
size_t dwords)
{
if (dwords > USB4_DATA_DWORDS)
return -EINVAL;
return tb_port_write(port, data, TB_CFG_PORT, port->cap_usb4 + PORT_CS_2,
dwords);
}
static int usb4_port_sb_read(struct tb_port *port, enum usb4_sb_target target,
u8 index, u8 reg, void *buf, u8 size)
{
size_t dwords = DIV_ROUND_UP(size, 4);
int ret;
u32 val;
if (!port->cap_usb4)
return -EINVAL;
val = reg;
val |= size << PORT_CS_1_LENGTH_SHIFT;
val |= (target << PORT_CS_1_TARGET_SHIFT) & PORT_CS_1_TARGET_MASK;
if (target == USB4_SB_TARGET_RETIMER)
val |= (index << PORT_CS_1_RETIMER_INDEX_SHIFT);
val |= PORT_CS_1_PND;
ret = tb_port_write(port, &val, TB_CFG_PORT,
port->cap_usb4 + PORT_CS_1, 1);
if (ret)
return ret;
ret = usb4_port_wait_for_bit(port, port->cap_usb4 + PORT_CS_1,
PORT_CS_1_PND, 0, 500);
if (ret)
return ret;
ret = tb_port_read(port, &val, TB_CFG_PORT,
port->cap_usb4 + PORT_CS_1, 1);
if (ret)
return ret;
if (val & PORT_CS_1_NR)
return -ENODEV;
if (val & PORT_CS_1_RC)
return -EIO;
return buf ? usb4_port_read_data(port, buf, dwords) : 0;
}
static int usb4_port_sb_write(struct tb_port *port, enum usb4_sb_target target,
u8 index, u8 reg, const void *buf, u8 size)
{
size_t dwords = DIV_ROUND_UP(size, 4);
int ret;
u32 val;
if (!port->cap_usb4)
return -EINVAL;
if (buf) {
ret = usb4_port_write_data(port, buf, dwords);
if (ret)
return ret;
}
val = reg;
val |= size << PORT_CS_1_LENGTH_SHIFT;
val |= PORT_CS_1_WNR_WRITE;
val |= (target << PORT_CS_1_TARGET_SHIFT) & PORT_CS_1_TARGET_MASK;
if (target == USB4_SB_TARGET_RETIMER)
val |= (index << PORT_CS_1_RETIMER_INDEX_SHIFT);
val |= PORT_CS_1_PND;
ret = tb_port_write(port, &val, TB_CFG_PORT,
port->cap_usb4 + PORT_CS_1, 1);
if (ret)
return ret;
ret = usb4_port_wait_for_bit(port, port->cap_usb4 + PORT_CS_1,
PORT_CS_1_PND, 0, 500);
if (ret)
return ret;
ret = tb_port_read(port, &val, TB_CFG_PORT,
port->cap_usb4 + PORT_CS_1, 1);
if (ret)
return ret;
if (val & PORT_CS_1_NR)
return -ENODEV;
if (val & PORT_CS_1_RC)
return -EIO;
return 0;
}
static int usb4_port_sb_op(struct tb_port *port, enum usb4_sb_target target,
u8 index, enum usb4_sb_opcode opcode, int timeout_msec)
{
ktime_t timeout;
u32 val;
int ret;
val = opcode;
ret = usb4_port_sb_write(port, target, index, USB4_SB_OPCODE, &val,
sizeof(val));
if (ret)
return ret;
timeout = ktime_add_ms(ktime_get(), timeout_msec);
do {
/* Check results */
ret = usb4_port_sb_read(port, target, index, USB4_SB_OPCODE,
&val, sizeof(val));
if (ret)
return ret;
switch (val) {
case 0:
return 0;
case USB4_SB_OPCODE_ERR:
return -EAGAIN;
case USB4_SB_OPCODE_ONS:
return -EOPNOTSUPP;
default:
if (val != opcode)
return -EIO;
break;
}
} while (ktime_before(ktime_get(), timeout));
return -ETIMEDOUT;
}
/**
* usb4_port_enumerate_retimers() - Send RT broadcast transaction
* @port: USB4 port
*
* This forces the USB4 port to send broadcast RT transaction which
* makes the retimers on the link to assign index to themselves. Returns
* %0 in case of success and negative errno if there was an error.
*/
int usb4_port_enumerate_retimers(struct tb_port *port)
{
u32 val;
val = USB4_SB_OPCODE_ENUMERATE_RETIMERS;
return usb4_port_sb_write(port, USB4_SB_TARGET_ROUTER, 0,
USB4_SB_OPCODE, &val, sizeof(val));
}
static inline int usb4_port_retimer_op(struct tb_port *port, u8 index,
enum usb4_sb_opcode opcode,
int timeout_msec)
{
return usb4_port_sb_op(port, USB4_SB_TARGET_RETIMER, index, opcode,
timeout_msec);
}
/**
* usb4_port_retimer_read() - Read from retimer sideband registers
* @port: USB4 port
* @index: Retimer index
* @reg: Sideband register to read
* @buf: Data from @reg is stored here
* @size: Number of bytes to read
*
* Function reads retimer sideband registers starting from @reg. The
* retimer is connected to @port at @index. Returns %0 in case of
* success, and read data is copied to @buf. If there is no retimer
* present at given @index returns %-ENODEV. In any other failure
* returns negative errno.
*/
int usb4_port_retimer_read(struct tb_port *port, u8 index, u8 reg, void *buf,
u8 size)
{
return usb4_port_sb_read(port, USB4_SB_TARGET_RETIMER, index, reg, buf,
size);
}
/**
* usb4_port_retimer_write() - Write to retimer sideband registers
* @port: USB4 port
* @index: Retimer index
* @reg: Sideband register to write
* @buf: Data that is written starting from @reg
* @size: Number of bytes to write
*
* Writes retimer sideband registers starting from @reg. The retimer is
* connected to @port at @index. Returns %0 in case of success. If there
* is no retimer present at given @index returns %-ENODEV. In any other
* failure returns negative errno.
*/
int usb4_port_retimer_write(struct tb_port *port, u8 index, u8 reg,
const void *buf, u8 size)
{
return usb4_port_sb_write(port, USB4_SB_TARGET_RETIMER, index, reg, buf,
size);
}
/**
* usb4_port_retimer_is_last() - Is the retimer last on-board retimer
* @port: USB4 port
* @index: Retimer index
*
* If the retimer at @index is last one (connected directly to the
* Type-C port) this function returns %1. If it is not returns %0. If
* the retimer is not present returns %-ENODEV. Otherwise returns
* negative errno.
*/
int usb4_port_retimer_is_last(struct tb_port *port, u8 index)
{
u32 metadata;
int ret;
ret = usb4_port_retimer_op(port, index, USB4_SB_OPCODE_QUERY_LAST_RETIMER,
500);
if (ret)
return ret;
ret = usb4_port_retimer_read(port, index, USB4_SB_METADATA, &metadata,
sizeof(metadata));
return ret ? ret : metadata & 1;
}
/**
* usb4_port_retimer_nvm_sector_size() - Read retimer NVM sector size
* @port: USB4 port
* @index: Retimer index
*
* Reads NVM sector size (in bytes) of a retimer at @index. This
* operation can be used to determine whether the retimer supports NVM
* upgrade for example. Returns sector size in bytes or negative errno
* in case of error. Specifically returns %-ENODEV if there is no
* retimer at @index.
*/
int usb4_port_retimer_nvm_sector_size(struct tb_port *port, u8 index)
{
u32 metadata;
int ret;
ret = usb4_port_retimer_op(port, index, USB4_SB_OPCODE_GET_NVM_SECTOR_SIZE,
500);
if (ret)
return ret;
ret = usb4_port_retimer_read(port, index, USB4_SB_METADATA, &metadata,
sizeof(metadata));
return ret ? ret : metadata & USB4_NVM_SECTOR_SIZE_MASK;
}
static int usb4_port_retimer_nvm_set_offset(struct tb_port *port, u8 index,
unsigned int address)
{
u32 metadata, dwaddress;
int ret;
dwaddress = address / 4;
metadata = (dwaddress << USB4_NVM_SET_OFFSET_SHIFT) &
USB4_NVM_SET_OFFSET_MASK;
ret = usb4_port_retimer_write(port, index, USB4_SB_METADATA, &metadata,
sizeof(metadata));
if (ret)
return ret;
return usb4_port_retimer_op(port, index, USB4_SB_OPCODE_NVM_SET_OFFSET,
500);
}
struct retimer_info {
struct tb_port *port;
u8 index;
};
static int usb4_port_retimer_nvm_write_next_block(void *data, const void *buf,
size_t dwords)
{
const struct retimer_info *info = data;
struct tb_port *port = info->port;
u8 index = info->index;
int ret;
ret = usb4_port_retimer_write(port, index, USB4_SB_DATA,
buf, dwords * 4);
if (ret)
return ret;
return usb4_port_retimer_op(port, index,
USB4_SB_OPCODE_NVM_BLOCK_WRITE, 1000);
}
/**
* usb4_port_retimer_nvm_write() - Write to retimer NVM
* @port: USB4 port
* @index: Retimer index
* @address: Byte address where to start the write
* @buf: Data to write
* @size: Size in bytes how much to write
*
* Writes @size bytes from @buf to the retimer NVM. Used for NVM
* upgrade. Returns %0 if the data was written successfully and negative
* errno in case of failure. Specifically returns %-ENODEV if there is
* no retimer at @index.
*/
int usb4_port_retimer_nvm_write(struct tb_port *port, u8 index, unsigned int address,
const void *buf, size_t size)
{
struct retimer_info info = { .port = port, .index = index };
int ret;
ret = usb4_port_retimer_nvm_set_offset(port, index, address);
if (ret)
return ret;
return usb4_do_write_data(address, buf, size,
usb4_port_retimer_nvm_write_next_block, &info);
}
/**
* usb4_port_retimer_nvm_authenticate() - Start retimer NVM upgrade
* @port: USB4 port
* @index: Retimer index
*
* After the new NVM image has been written via usb4_port_retimer_nvm_write()
* this function can be used to trigger the NVM upgrade process. If
* successful the retimer restarts with the new NVM and may not have the
* index set so one needs to call usb4_port_enumerate_retimers() to
* force index to be assigned.
*/
int usb4_port_retimer_nvm_authenticate(struct tb_port *port, u8 index)
{
u32 val;
/*
* We need to use the raw operation here because once the
* authentication completes the retimer index is not set anymore
* so we do not get back the status now.
*/
val = USB4_SB_OPCODE_NVM_AUTH_WRITE;
return usb4_port_sb_write(port, USB4_SB_TARGET_RETIMER, index,
USB4_SB_OPCODE, &val, sizeof(val));
}
/**
* usb4_port_retimer_nvm_authenticate_status() - Read status of NVM upgrade
* @port: USB4 port
* @index: Retimer index
* @status: Raw status code read from metadata
*
* This can be called after usb4_port_retimer_nvm_authenticate() and
* usb4_port_enumerate_retimers() to fetch status of the NVM upgrade.
*
* Returns %0 if the authentication status was successfully read. The
* completion metadata (the result) is then stored into @status. If
* reading the status fails, returns negative errno.
*/
int usb4_port_retimer_nvm_authenticate_status(struct tb_port *port, u8 index,
u32 *status)
{
u32 metadata, val;
int ret;
ret = usb4_port_retimer_read(port, index, USB4_SB_OPCODE, &val,
sizeof(val));
if (ret)
return ret;
switch (val) {
case 0:
*status = 0;
return 0;
case USB4_SB_OPCODE_ERR:
ret = usb4_port_retimer_read(port, index, USB4_SB_METADATA,
&metadata, sizeof(metadata));
if (ret)
return ret;
*status = metadata & USB4_SB_METADATA_NVM_AUTH_WRITE_MASK;
return 0;
case USB4_SB_OPCODE_ONS:
return -EOPNOTSUPP;
default:
return -EIO;
}
}
static int usb4_port_retimer_nvm_read_block(void *data, unsigned int dwaddress,
void *buf, size_t dwords)
{
const struct retimer_info *info = data;
struct tb_port *port = info->port;
u8 index = info->index;
u32 metadata;
int ret;
metadata = dwaddress << USB4_NVM_READ_OFFSET_SHIFT;
if (dwords < USB4_DATA_DWORDS)
metadata |= dwords << USB4_NVM_READ_LENGTH_SHIFT;
ret = usb4_port_retimer_write(port, index, USB4_SB_METADATA, &metadata,
sizeof(metadata));
if (ret)
return ret;
ret = usb4_port_retimer_op(port, index, USB4_SB_OPCODE_NVM_READ, 500);
if (ret)
return ret;
return usb4_port_retimer_read(port, index, USB4_SB_DATA, buf,
dwords * 4);
}
/**
* usb4_port_retimer_nvm_read() - Read contents of retimer NVM
* @port: USB4 port
* @index: Retimer index
* @address: NVM address (in bytes) to start reading
* @buf: Data read from NVM is stored here
* @size: Number of bytes to read
*
* Reads retimer NVM and copies the contents to @buf. Returns %0 if the
* read was successful and negative errno in case of failure.
* Specifically returns %-ENODEV if there is no retimer at @index.
*/
int usb4_port_retimer_nvm_read(struct tb_port *port, u8 index,
unsigned int address, void *buf, size_t size)
{
struct retimer_info info = { .port = port, .index = index };
return usb4_do_read_data(address, buf, size,
usb4_port_retimer_nvm_read_block, &info);
}
/**
* usb4_usb3_port_max_link_rate() - Maximum support USB3 link rate
* @port: USB3 adapter port
*
* Return maximum supported link rate of a USB3 adapter in Mb/s.
* Negative errno in case of error.
*/
int usb4_usb3_port_max_link_rate(struct tb_port *port)
{
int ret, lr;
u32 val;
if (!tb_port_is_usb3_down(port) && !tb_port_is_usb3_up(port))
return -EINVAL;
ret = tb_port_read(port, &val, TB_CFG_PORT,
port->cap_adap + ADP_USB3_CS_4, 1);
if (ret)
return ret;
lr = (val & ADP_USB3_CS_4_MSLR_MASK) >> ADP_USB3_CS_4_MSLR_SHIFT;
return lr == ADP_USB3_CS_4_MSLR_20G ? 20000 : 10000;
}
/**
* usb4_usb3_port_actual_link_rate() - Established USB3 link rate
* @port: USB3 adapter port
*
* Return actual established link rate of a USB3 adapter in Mb/s. If the
* link is not up returns %0 and negative errno in case of failure.
*/
int usb4_usb3_port_actual_link_rate(struct tb_port *port)
{
int ret, lr;
u32 val;
if (!tb_port_is_usb3_down(port) && !tb_port_is_usb3_up(port))
return -EINVAL;
ret = tb_port_read(port, &val, TB_CFG_PORT,
port->cap_adap + ADP_USB3_CS_4, 1);
if (ret)
return ret;
if (!(val & ADP_USB3_CS_4_ULV))
return 0;
lr = val & ADP_USB3_CS_4_ALR_MASK;
return lr == ADP_USB3_CS_4_ALR_20G ? 20000 : 10000;
}
static int usb4_usb3_port_cm_request(struct tb_port *port, bool request)
{
int ret;
u32 val;
if (!tb_port_is_usb3_down(port))
return -EINVAL;
if (tb_route(port->sw))
return -EINVAL;
ret = tb_port_read(port, &val, TB_CFG_PORT,
port->cap_adap + ADP_USB3_CS_2, 1);
if (ret)
return ret;
if (request)
val |= ADP_USB3_CS_2_CMR;
else
val &= ~ADP_USB3_CS_2_CMR;
ret = tb_port_write(port, &val, TB_CFG_PORT,
port->cap_adap + ADP_USB3_CS_2, 1);
if (ret)
return ret;
/*
* We can use val here directly as the CMR bit is in the same place
* as HCA. Just mask out others.
*/
val &= ADP_USB3_CS_2_CMR;
return usb4_port_wait_for_bit(port, port->cap_adap + ADP_USB3_CS_1,
ADP_USB3_CS_1_HCA, val, 1500);
}
static inline int usb4_usb3_port_set_cm_request(struct tb_port *port)
{
return usb4_usb3_port_cm_request(port, true);
}
static inline int usb4_usb3_port_clear_cm_request(struct tb_port *port)
{
return usb4_usb3_port_cm_request(port, false);
}
static unsigned int usb3_bw_to_mbps(u32 bw, u8 scale)
{
unsigned long uframes;
uframes = bw * 512UL << scale;
return DIV_ROUND_CLOSEST(uframes * 8000, 1000 * 1000);
}
static u32 mbps_to_usb3_bw(unsigned int mbps, u8 scale)
{
unsigned long uframes;
/* 1 uframe is 1/8 ms (125 us) -> 1 / 8000 s */
uframes = ((unsigned long)mbps * 1000 * 1000) / 8000;
return DIV_ROUND_UP(uframes, 512UL << scale);
}
static int usb4_usb3_port_read_allocated_bandwidth(struct tb_port *port,
int *upstream_bw,
int *downstream_bw)
{
u32 val, bw, scale;
int ret;
ret = tb_port_read(port, &val, TB_CFG_PORT,
port->cap_adap + ADP_USB3_CS_2, 1);
if (ret)
return ret;
ret = tb_port_read(port, &scale, TB_CFG_PORT,
port->cap_adap + ADP_USB3_CS_3, 1);
if (ret)
return ret;
scale &= ADP_USB3_CS_3_SCALE_MASK;
bw = val & ADP_USB3_CS_2_AUBW_MASK;
*upstream_bw = usb3_bw_to_mbps(bw, scale);
bw = (val & ADP_USB3_CS_2_ADBW_MASK) >> ADP_USB3_CS_2_ADBW_SHIFT;
*downstream_bw = usb3_bw_to_mbps(bw, scale);
return 0;
}
/**
* usb4_usb3_port_allocated_bandwidth() - Bandwidth allocated for USB3
* @port: USB3 adapter port
* @upstream_bw: Allocated upstream bandwidth is stored here
* @downstream_bw: Allocated downstream bandwidth is stored here
*
* Stores currently allocated USB3 bandwidth into @upstream_bw and
* @downstream_bw in Mb/s. Returns %0 in case of success and negative
* errno in failure.
*/
int usb4_usb3_port_allocated_bandwidth(struct tb_port *port, int *upstream_bw,
int *downstream_bw)
{
int ret;
ret = usb4_usb3_port_set_cm_request(port);
if (ret)
return ret;
ret = usb4_usb3_port_read_allocated_bandwidth(port, upstream_bw,
downstream_bw);
usb4_usb3_port_clear_cm_request(port);
return ret;
}
static int usb4_usb3_port_read_consumed_bandwidth(struct tb_port *port,
int *upstream_bw,
int *downstream_bw)
{
u32 val, bw, scale;
int ret;
ret = tb_port_read(port, &val, TB_CFG_PORT,
port->cap_adap + ADP_USB3_CS_1, 1);
if (ret)
return ret;
ret = tb_port_read(port, &scale, TB_CFG_PORT,
port->cap_adap + ADP_USB3_CS_3, 1);
if (ret)
return ret;
scale &= ADP_USB3_CS_3_SCALE_MASK;
bw = val & ADP_USB3_CS_1_CUBW_MASK;
*upstream_bw = usb3_bw_to_mbps(bw, scale);
bw = (val & ADP_USB3_CS_1_CDBW_MASK) >> ADP_USB3_CS_1_CDBW_SHIFT;
*downstream_bw = usb3_bw_to_mbps(bw, scale);
return 0;
}
static int usb4_usb3_port_write_allocated_bandwidth(struct tb_port *port,
int upstream_bw,
int downstream_bw)
{
u32 val, ubw, dbw, scale;
int ret;
/* Read the used scale, hardware default is 0 */
ret = tb_port_read(port, &scale, TB_CFG_PORT,
port->cap_adap + ADP_USB3_CS_3, 1);
if (ret)
return ret;
scale &= ADP_USB3_CS_3_SCALE_MASK;
ubw = mbps_to_usb3_bw(upstream_bw, scale);
dbw = mbps_to_usb3_bw(downstream_bw, scale);
ret = tb_port_read(port, &val, TB_CFG_PORT,
port->cap_adap + ADP_USB3_CS_2, 1);
if (ret)
return ret;
val &= ~(ADP_USB3_CS_2_AUBW_MASK | ADP_USB3_CS_2_ADBW_MASK);
val |= dbw << ADP_USB3_CS_2_ADBW_SHIFT;
val |= ubw;
return tb_port_write(port, &val, TB_CFG_PORT,
port->cap_adap + ADP_USB3_CS_2, 1);
}
/**
* usb4_usb3_port_allocate_bandwidth() - Allocate bandwidth for USB3
* @port: USB3 adapter port
* @upstream_bw: New upstream bandwidth
* @downstream_bw: New downstream bandwidth
*
* This can be used to set how much bandwidth is allocated for the USB3
* tunneled isochronous traffic. @upstream_bw and @downstream_bw are the
* new values programmed to the USB3 adapter allocation registers. If
* the values are lower than what is currently consumed the allocation
* is set to what is currently consumed instead (consumed bandwidth
* cannot be taken away by CM). The actual new values are returned in
* @upstream_bw and @downstream_bw.
*
* Returns %0 in case of success and negative errno if there was a
* failure.
*/
int usb4_usb3_port_allocate_bandwidth(struct tb_port *port, int *upstream_bw,
int *downstream_bw)
{
int ret, consumed_up, consumed_down, allocate_up, allocate_down;
ret = usb4_usb3_port_set_cm_request(port);
if (ret)
return ret;
ret = usb4_usb3_port_read_consumed_bandwidth(port, &consumed_up,
&consumed_down);
if (ret)
goto err_request;
/* Don't allow it go lower than what is consumed */
allocate_up = max(*upstream_bw, consumed_up);
allocate_down = max(*downstream_bw, consumed_down);
ret = usb4_usb3_port_write_allocated_bandwidth(port, allocate_up,
allocate_down);
if (ret)
goto err_request;
*upstream_bw = allocate_up;
*downstream_bw = allocate_down;
err_request:
usb4_usb3_port_clear_cm_request(port);
return ret;
}
/**
* usb4_usb3_port_release_bandwidth() - Release allocated USB3 bandwidth
* @port: USB3 adapter port
* @upstream_bw: New allocated upstream bandwidth
* @downstream_bw: New allocated downstream bandwidth
*
* Releases USB3 allocated bandwidth down to what is actually consumed.
* The new bandwidth is returned in @upstream_bw and @downstream_bw.
*
* Returns 0% in success and negative errno in case of failure.
*/
int usb4_usb3_port_release_bandwidth(struct tb_port *port, int *upstream_bw,
int *downstream_bw)
{
int ret, consumed_up, consumed_down;
ret = usb4_usb3_port_set_cm_request(port);
if (ret)
return ret;
ret = usb4_usb3_port_read_consumed_bandwidth(port, &consumed_up,
&consumed_down);
if (ret)
goto err_request;
/*
* Always keep 1000 Mb/s to make sure xHCI has at least some
* bandwidth available for isochronous traffic.
*/
if (consumed_up < 1000)
consumed_up = 1000;
if (consumed_down < 1000)
consumed_down = 1000;
ret = usb4_usb3_port_write_allocated_bandwidth(port, consumed_up,
consumed_down);
if (ret)
goto err_request;
*upstream_bw = consumed_up;
*downstream_bw = consumed_down;
err_request:
usb4_usb3_port_clear_cm_request(port);
return ret;
}

94
drivers/thunderbolt/xdomain.c
View File

@ -501,6 +501,55 @@ void tb_unregister_protocol_handler(struct tb_protocol_handler *handler)
}
EXPORT_SYMBOL_GPL(tb_unregister_protocol_handler);
static int rebuild_property_block(void)
{
u32 *block, len;
int ret;
ret = tb_property_format_dir(xdomain_property_dir, NULL, 0);
if (ret < 0)
return ret;
len = ret;
block = kcalloc(len, sizeof(u32), GFP_KERNEL);
if (!block)
return -ENOMEM;
ret = tb_property_format_dir(xdomain_property_dir, block, len);
if (ret) {
kfree(block);
return ret;
}
kfree(xdomain_property_block);
xdomain_property_block = block;
xdomain_property_block_len = len;
xdomain_property_block_gen++;
return 0;
}
static void finalize_property_block(void)
{
const struct tb_property *nodename;
/*
* On first XDomain connection we set up the the system
* nodename. This delayed here because userspace may not have it
* set when the driver is first probed.
*/
mutex_lock(&xdomain_lock);
nodename = tb_property_find(xdomain_property_dir, "deviceid",
TB_PROPERTY_TYPE_TEXT);
if (!nodename) {
tb_property_add_text(xdomain_property_dir, "deviceid",
utsname()->nodename);
rebuild_property_block();
}
mutex_unlock(&xdomain_lock);
}
static void tb_xdp_handle_request(struct work_struct *work)
{
struct xdomain_request_work *xw = container_of(work, typeof(*xw), work);
@ -529,6 +578,8 @@ static void tb_xdp_handle_request(struct work_struct *work)
goto out;
}
finalize_property_block();
switch (pkg->type) {
case PROPERTIES_REQUEST:
ret = tb_xdp_properties_response(tb, ctl, route, sequence, uuid,
@ -1569,35 +1620,6 @@ bool tb_xdomain_handle_request(struct tb *tb, enum tb_cfg_pkg_type type,
return ret > 0;
}
static int rebuild_property_block(void)
{
u32 *block, len;
int ret;
ret = tb_property_format_dir(xdomain_property_dir, NULL, 0);
if (ret < 0)
return ret;
len = ret;
block = kcalloc(len, sizeof(u32), GFP_KERNEL);
if (!block)
return -ENOMEM;
ret = tb_property_format_dir(xdomain_property_dir, block, len);
if (ret) {
kfree(block);
return ret;
}
kfree(xdomain_property_block);
xdomain_property_block = block;
xdomain_property_block_len = len;
xdomain_property_block_gen++;
return 0;
}
static int update_xdomain(struct device *dev, void *data)
{
struct tb_xdomain *xd;
@ -1702,8 +1724,6 @@ EXPORT_SYMBOL_GPL(tb_unregister_property_dir);
int tb_xdomain_init(void)
{
int ret;
xdomain_property_dir = tb_property_create_dir(NULL);
if (!xdomain_property_dir)
return -ENOMEM;
@ -1712,22 +1732,16 @@ int tb_xdomain_init(void)
* Initialize standard set of properties without any service
* directories. Those will be added by service drivers
* themselves when they are loaded.
*
* We also add node name later when first connection is made.
*/
tb_property_add_immediate(xdomain_property_dir, "vendorid",
PCI_VENDOR_ID_INTEL);
tb_property_add_text(xdomain_property_dir, "vendorid", "Intel Corp.");
tb_property_add_immediate(xdomain_property_dir, "deviceid", 0x1);
tb_property_add_text(xdomain_property_dir, "deviceid",
utsname()->nodename);
tb_property_add_immediate(xdomain_property_dir, "devicerv", 0x80000100);
ret = rebuild_property_block();
if (ret) {
tb_property_free_dir(xdomain_property_dir);
xdomain_property_dir = NULL;
}
return ret;
return 0;
}
void tb_xdomain_exit(void)

4
drivers/usb/atm/cxacru.c
View File

@ -408,7 +408,7 @@ static ssize_t adsl_state_store(struct device *dev,
case CXPOLL_STOPPING:
/* abort stop request */
instance->poll_state = CXPOLL_POLLING;
/* fall through */
fallthrough;
case CXPOLL_POLLING:
case CXPOLL_SHUTDOWN:
/* don't start polling */
@ -802,7 +802,7 @@ static int cxacru_atm_start(struct usbatm_data *usbatm_instance,
case CXPOLL_STOPPING:
/* abort stop request */
instance->poll_state = CXPOLL_POLLING;
/* fall through */
fallthrough;
case CXPOLL_POLLING:
case CXPOLL_SHUTDOWN:
/* don't start polling */

4
drivers/usb/atm/ueagle-atm.c
View File

@ -570,7 +570,7 @@ MODULE_PARM_DESC(annex,
#define LOAD_INTERNAL 0xA0
#define F8051_USBCS 0x7f92
/**
/*
* uea_send_modem_cmd - Send a command for pre-firmware devices.
*/
static int uea_send_modem_cmd(struct usb_device *usb,
@ -672,7 +672,7 @@ err:
uea_leaves(usb);
}
/**
/*
* uea_load_firmware - Load usb firmware for pre-firmware devices.
*/
static int uea_load_firmware(struct usb_device *usb, unsigned int ver)

6
drivers/usb/c67x00/c67x00-hcd.c
View File

@ -228,7 +228,7 @@ static int c67x00_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
* Main part of host controller driver
*/
/**
/*
* c67x00_hcd_irq
*
* This function is called from the interrupt handler in c67x00-drv.c
@ -260,7 +260,7 @@ static void c67x00_hcd_irq(struct c67x00_sie *sie, u16 int_status, u16 msg)
}
}
/**
/*
* c67x00_hcd_start: Host controller start hook
*/
static int c67x00_hcd_start(struct usb_hcd *hcd)
@ -272,7 +272,7 @@ static int c67x00_hcd_start(struct usb_hcd *hcd)
return 0;
}
/**
/*
* c67x00_hcd_stop: Host controller stop hook
*/
static void c67x00_hcd_stop(struct usb_hcd *hcd)

6
drivers/usb/c67x00/c67x00-ll-hpi.c
View File

@ -262,7 +262,7 @@ u16 c67x00_ll_get_usb_ctl(struct c67x00_sie *sie)
return hpi_read_word(sie->dev, USB_CTL_REG(sie->sie_num));
}
/**
/*
* c67x00_ll_usb_clear_status - clear the USB status bits
*/
void c67x00_ll_usb_clear_status(struct c67x00_sie *sie, u16 bits)
@ -395,7 +395,7 @@ int c67x00_ll_reset(struct c67x00_device *dev)
/* -------------------------------------------------------------------------- */
/**
/*
* c67x00_ll_write_mem_le16 - write into c67x00 memory
* Only data is little endian, addr has cpu endianess.
*/
@ -434,7 +434,7 @@ void c67x00_ll_write_mem_le16(struct c67x00_device *dev, u16 addr,
}
}
/**
/*
* c67x00_ll_read_mem_le16 - read from c67x00 memory
* Only data is little endian, addr has cpu endianess.
*/

26
drivers/usb/c67x00/c67x00-sched.c
View File

@ -23,7 +23,7 @@
/* -------------------------------------------------------------------------- */
/**
/*
* struct c67x00_ep_data: Host endpoint data structure
*/
struct c67x00_ep_data {
@ -34,7 +34,7 @@ struct c67x00_ep_data {
u16 next_frame; /* For int/isoc transactions */
};
/**
/*
* struct c67x00_td
*
* Hardware parts are little endiannes, SW in CPU endianess.
@ -130,7 +130,7 @@ struct c67x00_urb_priv {
/* -------------------------------------------------------------------------- */
/**
/*
* dbg_td - Dump the contents of the TD
*/
static void dbg_td(struct c67x00_hcd *c67x00, struct c67x00_td *td, char *msg)
@ -161,7 +161,7 @@ static inline u16 c67x00_get_current_frame_number(struct c67x00_hcd *c67x00)
return c67x00_ll_husb_get_frame(c67x00->sie) & HOST_FRAME_MASK;
}
/**
/*
* frame_add
* Software wraparound for framenumbers.
*/
@ -170,7 +170,7 @@ static inline u16 frame_add(u16 a, u16 b)
return (a + b) & HOST_FRAME_MASK;
}
/**
/*
* frame_after - is frame a after frame b
*/
static inline int frame_after(u16 a, u16 b)
@ -179,7 +179,7 @@ static inline int frame_after(u16 a, u16 b)
(HOST_FRAME_MASK / 2);
}
/**
/*
* frame_after_eq - is frame a after or equal to frame b
*/
static inline int frame_after_eq(u16 a, u16 b)
@ -190,7 +190,7 @@ static inline int frame_after_eq(u16 a, u16 b)
/* -------------------------------------------------------------------------- */
/**
/*
* c67x00_release_urb - remove link from all tds to this urb
* Disconnects the urb from it's tds, so that it can be given back.
* pre: urb->hcpriv != NULL
@ -557,7 +557,7 @@ static int c67x00_claim_frame_bw(struct c67x00_hcd *c67x00, struct urb *urb,
/* -------------------------------------------------------------------------- */
/**
/*
* td_addr and buf_addr must be word aligned
*/
static int c67x00_create_td(struct c67x00_hcd *c67x00, struct urb *urb,
@ -685,7 +685,7 @@ static int c67x00_add_data_urb(struct c67x00_hcd *c67x00, struct urb *urb)
return 0;
}
/**
/*
* return 0 in case more bandwidth is available, else errorcode
*/
static int c67x00_add_ctrl_urb(struct c67x00_hcd *c67x00, struct urb *urb)
@ -822,7 +822,7 @@ static void c67x00_fill_frame(struct c67x00_hcd *c67x00)
/* -------------------------------------------------------------------------- */
/**
/*
* Get TD from C67X00
*/
static inline void
@ -970,7 +970,7 @@ static void c67x00_handle_isoc(struct c67x00_hcd *c67x00, struct c67x00_td *td)
/* -------------------------------------------------------------------------- */
/**
/*
* c67x00_check_td_list - handle tds which have been processed by the c67x00
* pre: current_td == 0
*/
@ -1045,7 +1045,7 @@ static inline int c67x00_all_tds_processed(struct c67x00_hcd *c67x00)
return !c67x00_ll_husb_get_current_td(c67x00->sie);
}
/**
/*
* Send td to C67X00
*/
static void c67x00_send_td(struct c67x00_hcd *c67x00, struct c67x00_td *td)
@ -1081,7 +1081,7 @@ static void c67x00_send_frame(struct c67x00_hcd *c67x00)
/* -------------------------------------------------------------------------- */
/**
/*
* c67x00_do_work - Schedulers state machine
*/
static void c67x00_do_work(struct c67x00_hcd *c67x00)

2
drivers/usb/cdns3/cdns3-ti.c
View File

@ -2,7 +2,7 @@
/**
* cdns3-ti.c - TI specific Glue layer for Cadence USB Controller
*
* Copyright (C) 2019 Texas Instruments Incorporated - http://www.ti.com
* Copyright (C) 2019 Texas Instruments Incorporated - https://www.ti.com
*/
#include <linux/bits.h>

50
drivers/usb/cdns3/core.c
View File

@ -27,13 +27,6 @@
static int cdns3_idle_init(struct cdns3 *cdns);
static inline
struct cdns3_role_driver *cdns3_get_current_role_driver(struct cdns3 *cdns)
{
WARN_ON(!cdns->roles[cdns->role]);
return cdns->roles[cdns->role];
}
static int cdns3_role_start(struct cdns3 *cdns, enum usb_role role)
{
int ret;
@ -93,7 +86,7 @@ static int cdns3_core_init_role(struct cdns3 *cdns)
struct device *dev = cdns->dev;
enum usb_dr_mode best_dr_mode;
enum usb_dr_mode dr_mode;
int ret = 0;
int ret;
dr_mode = usb_get_dr_mode(dev);
cdns->role = USB_ROLE_NONE;
@ -184,7 +177,7 @@ static int cdns3_core_init_role(struct cdns3 *cdns)
goto err;
}
return ret;
return 0;
err:
cdns3_exit_roles(cdns);
return ret;
@ -198,11 +191,17 @@ err:
*/
static enum usb_role cdns3_hw_role_state_machine(struct cdns3 *cdns)
{
enum usb_role role;
enum usb_role role = USB_ROLE_NONE;
int id, vbus;
if (cdns->dr_mode != USB_DR_MODE_OTG)
goto not_otg;
if (cdns->dr_mode != USB_DR_MODE_OTG) {
if (cdns3_is_host(cdns))
role = USB_ROLE_HOST;
if (cdns3_is_device(cdns))
role = USB_ROLE_DEVICE;
return role;
}
id = cdns3_get_id(cdns);
vbus = cdns3_get_vbus(cdns);
@ -239,14 +238,6 @@ static enum usb_role cdns3_hw_role_state_machine(struct cdns3 *cdns)
dev_dbg(cdns->dev, "role %d -> %d\n", cdns->role, role);
return role;
not_otg:
if (cdns3_is_host(cdns))
role = USB_ROLE_HOST;
if (cdns3_is_device(cdns))
role = USB_ROLE_DEVICE;
return role;
}
static int cdns3_idle_role_start(struct cdns3 *cdns)
@ -282,7 +273,7 @@ static int cdns3_idle_init(struct cdns3 *cdns)
/**
* cdns3_hw_role_switch - switch roles based on HW state
* @cdns3: controller
* @cdns: controller
*/
int cdns3_hw_role_switch(struct cdns3 *cdns)
{
@ -320,7 +311,7 @@ exit:
/**
* cdsn3_role_get - get current role of controller.
*
* @dev: Pointer to device structure
* @sw: pointer to USB role switch structure
*
* Returns role
*/
@ -334,8 +325,8 @@ static enum usb_role cdns3_role_get(struct usb_role_switch *sw)
/**
* cdns3_role_set - set current role of controller.
*
* @dev: pointer to device object
* @role - the previous role
* @sw: pointer to USB role switch structure
* @role: the previous role
* Handles below events:
* - Role switch for dual-role devices
* - USB_ROLE_GADGET <--> USB_ROLE_NONE for peripheral-only devices
@ -356,7 +347,6 @@ static int cdns3_role_set(struct usb_role_switch *sw, enum usb_role role)
case USB_ROLE_HOST:
break;
default:
ret = -EPERM;
goto pm_put;
}
}
@ -367,17 +357,14 @@ static int cdns3_role_set(struct usb_role_switch *sw, enum usb_role role)
case USB_ROLE_DEVICE:
break;
default:
ret = -EPERM;
goto pm_put;
}
}
cdns3_role_stop(cdns);
ret = cdns3_role_start(cdns, role);
if (ret) {
if (ret)
dev_err(cdns->dev, "set role %d has failed\n", role);
ret = -EPERM;
}
pm_put:
pm_runtime_put_sync(cdns->dev);
@ -402,7 +389,7 @@ static int cdns3_probe(struct platform_device *pdev)
ret = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(32));
if (ret) {
dev_err(dev, "error setting dma mask: %d\n", ret);
return -ENODEV;
return ret;
}
cdns = devm_kzalloc(dev, sizeof(*cdns), GFP_KERNEL);
@ -436,8 +423,7 @@ static int cdns3_probe(struct platform_device *pdev)
if (cdns->dev_irq < 0)
dev_err(dev, "couldn't get peripheral irq\n");
res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "dev");
regs = devm_ioremap_resource(dev, res);
regs = devm_platform_ioremap_resource_byname(pdev, "dev");
if (IS_ERR(regs))
return PTR_ERR(regs);
cdns->dev_regs = regs;

171
drivers/usb/cdns3/drd.c
View File

@ -29,7 +29,6 @@
*/
int cdns3_set_mode(struct cdns3 *cdns, enum usb_dr_mode mode)
{
int ret = 0;
u32 reg;
switch (mode) {
@ -61,7 +60,7 @@ int cdns3_set_mode(struct cdns3 *cdns, enum usb_dr_mode mode)
return -EINVAL;
}
return ret;
return 0;
}
int cdns3_get_id(struct cdns3 *cdns)
@ -84,25 +83,25 @@ int cdns3_get_vbus(struct cdns3 *cdns)
return vbus;
}
int cdns3_is_host(struct cdns3 *cdns)
bool cdns3_is_host(struct cdns3 *cdns)
{
if (cdns->dr_mode == USB_DR_MODE_HOST)
return 1;
else if (!cdns3_get_id(cdns))
return 1;
return true;
else if (cdns3_get_id(cdns) == CDNS3_ID_HOST)
return true;
return 0;
return false;
}
int cdns3_is_device(struct cdns3 *cdns)
bool cdns3_is_device(struct cdns3 *cdns)
{
if (cdns->dr_mode == USB_DR_MODE_PERIPHERAL)
return 1;
return true;
else if (cdns->dr_mode == USB_DR_MODE_OTG)
if (cdns3_get_id(cdns))
return 1;
if (cdns3_get_id(cdns) == CDNS3_ID_PERIPHERAL)
return true;
return 0;
return false;
}
/**
@ -125,83 +124,95 @@ static void cdns3_otg_enable_irq(struct cdns3 *cdns)
}
/**
* cdns3_drd_switch_host - start/stop host
* @cdns: Pointer to controller context structure
* @on: 1 for start, 0 for stop
* cdns3_drd_host_on - start host.
* @cdns: Pointer to controller context structure.
*
* Returns 0 on success otherwise negative errno.
*/
int cdns3_drd_host_on(struct cdns3 *cdns)
{
u32 val;
int ret;
/* Enable host mode. */
writel(OTGCMD_HOST_BUS_REQ | OTGCMD_OTG_DIS,
&cdns->otg_regs->cmd);
dev_dbg(cdns->dev, "Waiting till Host mode is turned on\n");
ret = readl_poll_timeout_atomic(&cdns->otg_regs->sts, val,
val & OTGSTS_XHCI_READY, 1, 100000);
if (ret)
dev_err(cdns->dev, "timeout waiting for xhci_ready\n");
return ret;
}
/**
* cdns3_drd_host_off - stop host.
* @cdns: Pointer to controller context structure.
*/
void cdns3_drd_host_off(struct cdns3 *cdns)
{
u32 val;
writel(OTGCMD_HOST_BUS_DROP | OTGCMD_DEV_BUS_DROP |
OTGCMD_DEV_POWER_OFF | OTGCMD_HOST_POWER_OFF,
&cdns->otg_regs->cmd);
/* Waiting till H_IDLE state.*/
readl_poll_timeout_atomic(&cdns->otg_regs->state, val,
!(val & OTGSTATE_HOST_STATE_MASK),
1, 2000000);
}
/**
* cdns3_drd_gadget_on - start gadget.
* @cdns: Pointer to controller context structure.
*
* Returns 0 on success otherwise negative errno
*/
int cdns3_drd_switch_host(struct cdns3 *cdns, int on)
int cdns3_drd_gadget_on(struct cdns3 *cdns)
{
int ret, val;
u32 reg = OTGCMD_OTG_DIS;
/* switch OTG core */
if (on) {
writel(OTGCMD_HOST_BUS_REQ | reg, &cdns->otg_regs->cmd);
writel(OTGCMD_DEV_BUS_REQ | reg, &cdns->otg_regs->cmd);
dev_dbg(cdns->dev, "Waiting till Host mode is turned on\n");
ret = readl_poll_timeout_atomic(&cdns->otg_regs->sts, val,
val & OTGSTS_XHCI_READY,
1, 100000);
if (ret) {
dev_err(cdns->dev, "timeout waiting for xhci_ready\n");
return ret;
}
} else {
writel(OTGCMD_HOST_BUS_DROP | OTGCMD_DEV_BUS_DROP |
OTGCMD_DEV_POWER_OFF | OTGCMD_HOST_POWER_OFF,
&cdns->otg_regs->cmd);
/* Waiting till H_IDLE state.*/
readl_poll_timeout_atomic(&cdns->otg_regs->state, val,
!(val & OTGSTATE_HOST_STATE_MASK),
1, 2000000);
dev_dbg(cdns->dev, "Waiting till Device mode is turned on\n");
ret = readl_poll_timeout_atomic(&cdns->otg_regs->sts, val,
val & OTGSTS_DEV_READY,
1, 100000);
if (ret) {
dev_err(cdns->dev, "timeout waiting for dev_ready\n");
return ret;
}
return 0;
}
/**
* cdns3_drd_switch_gadget - start/stop gadget
* @cdns: Pointer to controller context structure
* @on: 1 for start, 0 for stop
*
* Returns 0 on success otherwise negative errno
* cdns3_drd_gadget_off - stop gadget.
* @cdns: Pointer to controller context structure.
*/
int cdns3_drd_switch_gadget(struct cdns3 *cdns, int on)
void cdns3_drd_gadget_off(struct cdns3 *cdns)
{
int ret, val;
u32 reg = OTGCMD_OTG_DIS;
u32 val;
/* switch OTG core */
if (on) {
writel(OTGCMD_DEV_BUS_REQ | reg, &cdns->otg_regs->cmd);
dev_dbg(cdns->dev, "Waiting till Device mode is turned on\n");
ret = readl_poll_timeout_atomic(&cdns->otg_regs->sts, val,
val & OTGSTS_DEV_READY,
1, 100000);
if (ret) {
dev_err(cdns->dev, "timeout waiting for dev_ready\n");
return ret;
}
} else {
/*
* driver should wait at least 10us after disabling Device
* before turning-off Device (DEV_BUS_DROP)
*/
usleep_range(20, 30);
writel(OTGCMD_HOST_BUS_DROP | OTGCMD_DEV_BUS_DROP |
OTGCMD_DEV_POWER_OFF | OTGCMD_HOST_POWER_OFF,
&cdns->otg_regs->cmd);
/* Waiting till DEV_IDLE state.*/
readl_poll_timeout_atomic(&cdns->otg_regs->state, val,
!(val & OTGSTATE_DEV_STATE_MASK),
1, 2000000);
}
return 0;
/*
* Driver should wait at least 10us after disabling Device
* before turning-off Device (DEV_BUS_DROP).
*/
usleep_range(20, 30);
writel(OTGCMD_HOST_BUS_DROP | OTGCMD_DEV_BUS_DROP |
OTGCMD_DEV_POWER_OFF | OTGCMD_HOST_POWER_OFF,
&cdns->otg_regs->cmd);
/* Waiting till DEV_IDLE state.*/
readl_poll_timeout_atomic(&cdns->otg_regs->state, val,
!(val & OTGSTATE_DEV_STATE_MASK),
1, 2000000);
}
/**
@ -212,7 +223,7 @@ int cdns3_drd_switch_gadget(struct cdns3 *cdns, int on)
*/
static int cdns3_init_otg_mode(struct cdns3 *cdns)
{
int ret = 0;
int ret;
cdns3_otg_disable_irq(cdns);
/* clear all interrupts */
@ -223,7 +234,8 @@ static int cdns3_init_otg_mode(struct cdns3 *cdns)
return ret;
cdns3_otg_enable_irq(cdns);
return ret;
return 0;
}
/**
@ -234,7 +246,7 @@ static int cdns3_init_otg_mode(struct cdns3 *cdns)
*/
int cdns3_drd_update_mode(struct cdns3 *cdns)
{
int ret = 0;
int ret;
switch (cdns->dr_mode) {
case USB_DR_MODE_PERIPHERAL:
@ -279,12 +291,12 @@ static irqreturn_t cdns3_drd_irq(int irq, void *data)
u32 reg;
if (cdns->dr_mode != USB_DR_MODE_OTG)
return ret;
return IRQ_NONE;
reg = readl(&cdns->otg_regs->ivect);
if (!reg)
return ret;
return IRQ_NONE;
if (reg & OTGIEN_ID_CHANGE_INT) {
dev_dbg(cdns->dev, "OTG IRQ: new ID: %d\n",
@ -307,8 +319,8 @@ static irqreturn_t cdns3_drd_irq(int irq, void *data)
int cdns3_drd_init(struct cdns3 *cdns)
{
void __iomem *regs;
int ret = 0;
u32 state;
int ret;
regs = devm_ioremap_resource(cdns->dev, &cdns->otg_res);
if (IS_ERR(regs))
@ -359,19 +371,18 @@ int cdns3_drd_init(struct cdns3 *cdns)
cdns3_drd_thread_irq,
IRQF_SHARED,
dev_name(cdns->dev), cdns);
if (ret) {
dev_err(cdns->dev, "couldn't get otg_irq\n");
return ret;
}
state = readl(&cdns->otg_regs->sts);
if (OTGSTS_OTG_NRDY(state) != 0) {
if (OTGSTS_OTG_NRDY(state)) {
dev_err(cdns->dev, "Cadence USB3 OTG device not ready\n");
return -ENODEV;
}
return ret;
return 0;
}
int cdns3_drd_exit(struct cdns3 *cdns)

13
drivers/usb/cdns3/drd.h
View File

@ -153,15 +153,20 @@ struct cdns3_otg_common_regs {
/* Only for CDNS3_CONTROLLER_V0 version */
#define OVERRIDE_IDPULLUP_V0 BIT(24)
int cdns3_is_host(struct cdns3 *cdns);
int cdns3_is_device(struct cdns3 *cdns);
#define CDNS3_ID_PERIPHERAL 1
#define CDNS3_ID_HOST 0
bool cdns3_is_host(struct cdns3 *cdns);
bool cdns3_is_device(struct cdns3 *cdns);
int cdns3_get_id(struct cdns3 *cdns);
int cdns3_get_vbus(struct cdns3 *cdns);
int cdns3_drd_init(struct cdns3 *cdns);
int cdns3_drd_exit(struct cdns3 *cdns);
int cdns3_drd_update_mode(struct cdns3 *cdns);
int cdns3_drd_switch_gadget(struct cdns3 *cdns, int on);
int cdns3_drd_switch_host(struct cdns3 *cdns, int on);
int cdns3_drd_gadget_on(struct cdns3 *cdns);
void cdns3_drd_gadget_off(struct cdns3 *cdns);
int cdns3_drd_host_on(struct cdns3 *cdns);
void cdns3_drd_host_off(struct cdns3 *cdns);
int cdns3_set_mode(struct cdns3 *cdns, enum usb_dr_mode mode);
#endif /* __LINUX_CDNS3_DRD */

40
drivers/usb/cdns3/ep0.c
View File

@ -29,6 +29,7 @@ static struct usb_endpoint_descriptor cdns3_gadget_ep0_desc = {
* @length: data length
* @erdy: set it to 1 when ERDY packet should be sent -
* exit from flow control state
* @zlp: add zero length packet
*/
static void cdns3_ep0_run_transfer(struct cdns3_device *priv_dev,
dma_addr_t dma_addr,
@ -122,8 +123,6 @@ static void cdns3_ep0_complete_setup(struct cdns3_device *priv_dev,
priv_dev->ep0_stage = CDNS3_SETUP_STAGE;
writel((send_erdy ? EP_CMD_ERDY : 0) | EP_CMD_REQ_CMPL,
&priv_dev->regs->ep_cmd);
cdns3_allow_enable_l1(priv_dev, 1);
}
/**
@ -160,13 +159,12 @@ static int cdns3_req_ep0_set_configuration(struct cdns3_device *priv_dev,
if (result)
return result;
if (config) {
cdns3_set_hw_configuration(priv_dev);
} else {
if (!config) {
cdns3_hw_reset_eps_config(priv_dev);
usb_gadget_set_state(&priv_dev->gadget,
USB_STATE_ADDRESS);
}
break;
case USB_STATE_CONFIGURED:
result = cdns3_ep0_delegate_req(priv_dev, ctrl_req);
@ -227,7 +225,7 @@ static int cdns3_req_ep0_set_address(struct cdns3_device *priv_dev,
/**
* cdns3_req_ep0_get_status - Handling of GET_STATUS standard USB request
* @priv_dev: extended gadget object
* @ctrl_req: pointer to received setup packet
* @ctrl: pointer to received setup packet
*
* Returns 0 if success, error code on error
*/
@ -329,10 +327,10 @@ static int cdns3_ep0_feature_handle_device(struct cdns3_device *priv_dev,
tmode >>= 8;
switch (tmode) {
case TEST_J:
case TEST_K:
case TEST_SE0_NAK:
case TEST_PACKET:
case USB_TEST_J:
case USB_TEST_K:
case USB_TEST_SE0_NAK:
case USB_TEST_PACKET:
cdns3_set_register_bit(&priv_dev->regs->usb_cmd,
USB_CMD_STMODE |
USB_STS_TMODE_SEL(tmode - 1));
@ -401,7 +399,7 @@ static int cdns3_ep0_feature_handle_endpoint(struct cdns3_device *priv_dev,
* Handling of GET/SET_FEATURE standard USB request
*
* @priv_dev: extended gadget object
* @ctrl_req: pointer to received setup packet
* @ctrl: pointer to received setup packet
* @set: must be set to 1 for SET_FEATURE request
*
* Returns 0 if success, error code on error
@ -610,7 +608,7 @@ static bool cdns3_check_new_setup(struct cdns3_device *priv_dev)
{
u32 ep_sts_reg;
cdns3_select_ep(priv_dev, 0 | USB_DIR_OUT);
cdns3_select_ep(priv_dev, USB_DIR_OUT);
ep_sts_reg = readl(&priv_dev->regs->ep_sts);
return !!(ep_sts_reg & (EP_STS_SETUP | EP_STS_STPWAIT));
@ -639,7 +637,6 @@ void cdns3_check_ep0_interrupt_proceed(struct cdns3_device *priv_dev, int dir)
if (priv_dev->wait_for_setup && ep_sts_reg & EP_STS_IOC) {
priv_dev->wait_for_setup = 0;
cdns3_allow_enable_l1(priv_dev, 0);
cdns3_ep0_setup_phase(priv_dev);
} else if ((ep_sts_reg & EP_STS_IOC) || (ep_sts_reg & EP_STS_ISP)) {
priv_dev->ep0_data_dir = dir;
@ -654,6 +651,9 @@ void cdns3_check_ep0_interrupt_proceed(struct cdns3_device *priv_dev, int dir)
/**
* cdns3_gadget_ep0_enable
* @ep: pointer to endpoint zero object
* @desc: pointer to usb endpoint descriptor
*
* Function shouldn't be called by gadget driver,
* endpoint 0 is allways active
*/
@ -665,6 +665,8 @@ static int cdns3_gadget_ep0_enable(struct usb_ep *ep,
/**
* cdns3_gadget_ep0_disable
* @ep: pointer to endpoint zero object
*
* Function shouldn't be called by gadget driver,
* endpoint 0 is allways active
*/
@ -701,7 +703,6 @@ static int cdns3_gadget_ep0_queue(struct usb_ep *ep,
struct cdns3_endpoint *priv_ep = ep_to_cdns3_ep(ep);
struct cdns3_device *priv_dev = priv_ep->cdns3_dev;
unsigned long flags;
int erdy_sent = 0;
int ret = 0;
u8 zlp = 0;
@ -717,15 +718,8 @@ static int cdns3_gadget_ep0_queue(struct usb_ep *ep,
/* send STATUS stage. Should be called only for SET_CONFIGURATION */
if (priv_dev->ep0_stage == CDNS3_STATUS_STAGE) {
cdns3_select_ep(priv_dev, 0x00);
erdy_sent = !priv_dev->hw_configured_flag;
cdns3_set_hw_configuration(priv_dev);
if (!erdy_sent)
cdns3_ep0_complete_setup(priv_dev, 0, 1);
cdns3_allow_enable_l1(priv_dev, 1);
cdns3_ep0_complete_setup(priv_dev, 0, 1);
request->actual = 0;
priv_dev->status_completion_no_call = true;
priv_dev->pending_status_request = request;
@ -860,7 +854,7 @@ void cdns3_ep0_config(struct cdns3_device *priv_dev)
/**
* cdns3_init_ep0 Initializes software endpoint 0 of gadget
* @priv_dev: extended gadget object
* @ep_priv: extended endpoint object
* @priv_ep: extended endpoint object
*
* Returns 0 on success else error code.
*/

33
drivers/usb/cdns3/gadget.c
View File

@ -242,9 +242,10 @@ int cdns3_allocate_trb_pool(struct cdns3_endpoint *priv_ep)
return -ENOMEM;
priv_ep->alloc_ring_size = ring_size;
memset(priv_ep->trb_pool, 0, ring_size);
}
memset(priv_ep->trb_pool, 0, ring_size);
priv_ep->num_trbs = num_trbs;
if (!priv_ep->num)
@ -421,7 +422,7 @@ static int cdns3_start_all_request(struct cdns3_device *priv_dev,
if ((priv_req->flags & REQUEST_INTERNAL) ||
(priv_ep->flags & EP_TDLCHK_EN) ||
priv_ep->use_streams) {
trace_printk("Blocking external request\n");
dev_dbg(priv_dev->dev, "Blocking external request\n");
return ret;
}
}
@ -644,7 +645,7 @@ static void cdns3_wa2_remove_old_request(struct cdns3_endpoint *priv_ep)
/**
* cdns3_wa2_descmissing_packet - handles descriptor missing event.
* @priv_dev: extended gadget object
* @priv_ep: extended gadget object
*
* This function is used only for WA2. For more information see Work around 2
* description.
@ -1080,6 +1081,7 @@ static int cdns3_ep_run_stream_transfer(struct cdns3_endpoint *priv_ep,
/**
* cdns3_ep_run_transfer - start transfer on no-default endpoint hardware
* @priv_ep: endpoint object
* @request: request object
*
* Returns zero on success or negative value on failure
*/
@ -1314,7 +1316,6 @@ void cdns3_set_hw_configuration(struct cdns3_device *priv_dev)
return;
writel(USB_CONF_CFGSET, &priv_dev->regs->usb_conf);
writel(EP_CMD_ERDY | EP_CMD_REQ_CMPL, &priv_dev->regs->ep_cmd);
cdns3_set_register_bit(&priv_dev->regs->usb_conf,
USB_CONF_U1EN | USB_CONF_U2EN);
@ -1331,6 +1332,8 @@ void cdns3_set_hw_configuration(struct cdns3_device *priv_dev)
cdns3_start_all_request(priv_dev, priv_ep);
}
}
cdns3_allow_enable_l1(priv_dev, 1);
}
/**
@ -1809,8 +1812,8 @@ static irqreturn_t cdns3_device_thread_irq_handler(int irq, void *data)
struct cdns3_device *priv_dev = data;
irqreturn_t ret = IRQ_NONE;
unsigned long flags;
int bit;
u32 reg;
unsigned int bit;
unsigned long reg;
spin_lock_irqsave(&priv_dev->lock, flags);
@ -1841,7 +1844,7 @@ static irqreturn_t cdns3_device_thread_irq_handler(int irq, void *data)
if (!reg)
goto irqend;
for_each_set_bit(bit, (unsigned long *)&reg,
for_each_set_bit(bit, &reg,
sizeof(u32) * BITS_PER_BYTE) {
cdns3_check_ep_interrupt_proceed(priv_dev->eps[bit]);
ret = IRQ_HANDLED;
@ -2568,7 +2571,7 @@ not_found:
/**
* __cdns3_gadget_ep_set_halt Sets stall on selected endpoint
* Should be called after acquiring spin_lock and selecting ep
* @ep: endpoint object to set stall on.
* @priv_ep: endpoint object to set stall on.
*/
void __cdns3_gadget_ep_set_halt(struct cdns3_endpoint *priv_ep)
{
@ -2589,7 +2592,7 @@ void __cdns3_gadget_ep_set_halt(struct cdns3_endpoint *priv_ep)
/**
* __cdns3_gadget_ep_clear_halt Clears stall on selected endpoint
* Should be called after acquiring spin_lock and selecting ep
* @ep: endpoint object to clear stall on
* @priv_ep: endpoint object to clear stall on
*/
int __cdns3_gadget_ep_clear_halt(struct cdns3_endpoint *priv_ep)
{
@ -2814,7 +2817,7 @@ static int cdns3_gadget_udc_start(struct usb_gadget *gadget,
dev_err(priv_dev->dev,
"invalid maximum_speed parameter %d\n",
max_speed);
/* fall through */
fallthrough;
case USB_SPEED_UNKNOWN:
/* default to superspeed */
max_speed = USB_SPEED_SUPER;
@ -2890,7 +2893,7 @@ static void cdns3_free_all_eps(struct cdns3_device *priv_dev)
/**
* cdns3_init_eps Initializes software endpoints of gadget
* @cdns3: extended gadget object
* @priv_dev: extended gadget object
*
* Returns 0 on success, error code elsewhere
*/
@ -3014,7 +3017,7 @@ void cdns3_gadget_exit(struct cdns3 *cdns)
kfree(priv_dev->zlp_buf);
kfree(priv_dev);
cdns->gadget_dev = NULL;
cdns3_drd_switch_gadget(cdns, 0);
cdns3_drd_gadget_off(cdns);
}
static int cdns3_gadget_start(struct cdns3 *cdns)
@ -3055,7 +3058,7 @@ static int cdns3_gadget_start(struct cdns3 *cdns)
default:
dev_err(cdns->dev, "invalid maximum_speed parameter %d\n",
max_speed);
/* fall through */
fallthrough;
case USB_SPEED_UNKNOWN:
/* default to superspeed */
max_speed = USB_SPEED_SUPER;
@ -3145,7 +3148,7 @@ static int __cdns3_gadget_init(struct cdns3 *cdns)
return ret;
}
cdns3_drd_switch_gadget(cdns, 1);
cdns3_drd_gadget_on(cdns);
pm_runtime_get_sync(cdns->dev);
ret = cdns3_gadget_start(cdns);
@ -3202,7 +3205,7 @@ static int cdns3_gadget_resume(struct cdns3 *cdns, bool hibernated)
/**
* cdns3_gadget_init - initialize device structure
*
* cdns: cdns3 instance
* @cdns: cdns3 instance
*
* This function initializes the gadget.
*/

4
drivers/usb/cdns3/host.c
View File

@ -19,7 +19,7 @@ static int __cdns3_host_init(struct cdns3 *cdns)
struct platform_device *xhci;
int ret;
cdns3_drd_switch_host(cdns, 1);
cdns3_drd_host_on(cdns);
xhci = platform_device_alloc("xhci-hcd", PLATFORM_DEVID_AUTO);
if (!xhci) {
@ -53,7 +53,7 @@ static void cdns3_host_exit(struct cdns3 *cdns)
{
platform_device_unregister(cdns->host_dev);
cdns->host_dev = NULL;
cdns3_drd_switch_host(cdns, 0);
cdns3_drd_host_off(cdns);
}
int cdns3_host_init(struct cdns3 *cdns)

4
drivers/usb/chipidea/ci_hdrc_imx.c
View File

@ -462,6 +462,10 @@ static int ci_hdrc_imx_probe(struct platform_device *pdev)
if (!IS_ERR(pdata.vbus_extcon.edev) ||
of_property_read_bool(np, "usb-role-switch"))
data->usbmisc_data->ext_vbus = 1;
/* usbmisc needs to know dr mode to choose wakeup setting */
data->usbmisc_data->available_role =
ci_hdrc_query_available_role(data->ci_pdev);
}
ret = imx_usbmisc_init_post(data->usbmisc_data);

1
drivers/usb/chipidea/ci_hdrc_imx.h
View File

@ -25,6 +25,7 @@ struct imx_usbmisc_data {
unsigned int ext_id:1; /* ID from exteranl event */
unsigned int ext_vbus:1; /* Vbus from exteranl event */
struct usb_phy *usb_phy;
enum usb_dr_mode available_role; /* runtime usb dr mode */
};
int imx_usbmisc_init(struct imx_usbmisc_data *data);

2
drivers/usb/chipidea/ci_hdrc_pci.c
View File

@ -120,7 +120,7 @@ static void ci_hdrc_pci_remove(struct pci_dev *pdev)
usb_phy_generic_unregister(ci->phy);
}
/**
/*
* PCI device table
* PCI device structure
*

28
drivers/usb/chipidea/core.c
View File

@ -155,6 +155,7 @@ u32 hw_read_intr_status(struct ci_hdrc *ci)
/**
* hw_port_test_set: writes port test mode (execute without interruption)
* @ci: the controller
* @mode: new value
*
* This function returns an error code
@ -877,6 +878,33 @@ void ci_hdrc_remove_device(struct platform_device *pdev)
}
EXPORT_SYMBOL_GPL(ci_hdrc_remove_device);
/**
* ci_hdrc_query_available_role: get runtime available operation mode
*
* The glue layer can get current operation mode (host/peripheral/otg)
* This function should be called after ci core device has created.
*
* @pdev: the platform device of ci core.
*
* Return runtime usb_dr_mode.
*/
enum usb_dr_mode ci_hdrc_query_available_role(struct platform_device *pdev)
{
struct ci_hdrc *ci = platform_get_drvdata(pdev);
if (!ci)
return USB_DR_MODE_UNKNOWN;
if (ci->roles[CI_ROLE_HOST] && ci->roles[CI_ROLE_GADGET])
return USB_DR_MODE_OTG;
else if (ci->roles[CI_ROLE_HOST])
return USB_DR_MODE_HOST;
else if (ci->roles[CI_ROLE_GADGET])
return USB_DR_MODE_PERIPHERAL;
else
return USB_DR_MODE_UNKNOWN;
}
EXPORT_SYMBOL_GPL(ci_hdrc_query_available_role);
static inline void ci_role_destroy(struct ci_hdrc *ci)
{
ci_hdrc_gadget_destroy(ci);

10
drivers/usb/chipidea/debug.c
View File

@ -18,7 +18,7 @@
#include "bits.h"
#include "otg.h"
/**
/*
* ci_device_show: prints information about device capabilities and status
*/
static int ci_device_show(struct seq_file *s, void *data)
@ -47,7 +47,7 @@ static int ci_device_show(struct seq_file *s, void *data)
}
DEFINE_SHOW_ATTRIBUTE(ci_device);
/**
/*
* ci_port_test_show: reads port test mode
*/
static int ci_port_test_show(struct seq_file *s, void *data)
@ -67,7 +67,7 @@ static int ci_port_test_show(struct seq_file *s, void *data)
return 0;
}
/**
/*
* ci_port_test_write: writes port test mode
*/
static ssize_t ci_port_test_write(struct file *file, const char __user *ubuf,
@ -115,7 +115,7 @@ static const struct file_operations ci_port_test_fops = {
.release = single_release,
};
/**
/*
* ci_qheads_show: DMA contents of all queue heads
*/
static int ci_qheads_show(struct seq_file *s, void *data)
@ -147,7 +147,7 @@ static int ci_qheads_show(struct seq_file *s, void *data)
}
DEFINE_SHOW_ATTRIBUTE(ci_qheads);
/**
/*
* ci_requests_show: DMA contents of all requests currently queued (all endpts)
*/
static int ci_requests_show(struct seq_file *s, void *data)

6
drivers/usb/chipidea/otg.c
View File

@ -23,6 +23,7 @@
/**
* hw_read_otgsc returns otgsc register bits value.
* @ci: the controller
* @mask: bitfield mask
*/
u32 hw_read_otgsc(struct ci_hdrc *ci, u32 mask)
@ -75,6 +76,7 @@ u32 hw_read_otgsc(struct ci_hdrc *ci, u32 mask)
/**
* hw_write_otgsc updates target bits of OTGSC register.
* @ci: the controller
* @mask: bitfield mask
* @data: to be written
*/
@ -229,7 +231,7 @@ static void ci_otg_work(struct work_struct *work)
/**
* ci_hdrc_otg_init - initialize otg struct
* ci: the controller
* @ci: the controller
*/
int ci_hdrc_otg_init(struct ci_hdrc *ci)
{
@ -248,7 +250,7 @@ int ci_hdrc_otg_init(struct ci_hdrc *ci)
/**
* ci_hdrc_otg_destroy - destroy otg struct
* ci: the controller
* @ci: the controller
*/
void ci_hdrc_otg_destroy(struct ci_hdrc *ci)
{

67
drivers/usb/chipidea/udc.c
View File

@ -72,6 +72,7 @@ static inline int ep_to_bit(struct ci_hdrc *ci, int n)
/**
* hw_device_state: enables/disables interrupts (execute without interruption)
* @ci: the controller
* @dma: 0 => disable, !0 => enable and set dma engine
*
* This function returns an error code
@ -91,6 +92,7 @@ static int hw_device_state(struct ci_hdrc *ci, u32 dma)
/**
* hw_ep_flush: flush endpoint fifo (execute without interruption)
* @ci: the controller
* @num: endpoint number
* @dir: endpoint direction
*
@ -112,6 +114,7 @@ static int hw_ep_flush(struct ci_hdrc *ci, int num, int dir)
/**
* hw_ep_disable: disables endpoint (execute without interruption)
* @ci: the controller
* @num: endpoint number
* @dir: endpoint direction
*
@ -126,6 +129,7 @@ static int hw_ep_disable(struct ci_hdrc *ci, int num, int dir)
/**
* hw_ep_enable: enables endpoint (execute without interruption)
* @ci: the controller
* @num: endpoint number
* @dir: endpoint direction
* @type: endpoint type
@ -161,6 +165,7 @@ static int hw_ep_enable(struct ci_hdrc *ci, int num, int dir, int type)
/**
* hw_ep_get_halt: return endpoint halt status
* @ci: the controller
* @num: endpoint number
* @dir: endpoint direction
*
@ -175,6 +180,7 @@ static int hw_ep_get_halt(struct ci_hdrc *ci, int num, int dir)
/**
* hw_ep_prime: primes endpoint (execute without interruption)
* @ci: the controller
* @num: endpoint number
* @dir: endpoint direction
* @is_ctrl: true if control endpoint
@ -205,6 +211,7 @@ static int hw_ep_prime(struct ci_hdrc *ci, int num, int dir, int is_ctrl)
/**
* hw_ep_set_halt: configures ep halt & resets data toggle after clear (execute
* without interruption)
* @ci: the controller
* @num: endpoint number
* @dir: endpoint direction
* @value: true => stall, false => unstall
@ -231,6 +238,7 @@ static int hw_ep_set_halt(struct ci_hdrc *ci, int num, int dir, int value)
/**
* hw_is_port_high_speed: test if port is high speed
* @ci: the controller
*
* This function returns true if high speed port
*/
@ -243,6 +251,7 @@ static int hw_port_is_high_speed(struct ci_hdrc *ci)
/**
* hw_test_and_clear_complete: test & clear complete status (execute without
* interruption)
* @ci: the controller
* @n: endpoint number
*
* This function returns complete status
@ -256,6 +265,7 @@ static int hw_test_and_clear_complete(struct ci_hdrc *ci, int n)
/**
* hw_test_and_clear_intr_active: test & clear active interrupts (execute
* without interruption)
* @ci: the controller
*
* This function returns active interrutps
*/
@ -270,6 +280,7 @@ static u32 hw_test_and_clear_intr_active(struct ci_hdrc *ci)
/**
* hw_test_and_clear_setup_guard: test & clear setup guard (execute without
* interruption)
* @ci: the controller
*
* This function returns guard value
*/
@ -281,6 +292,7 @@ static int hw_test_and_clear_setup_guard(struct ci_hdrc *ci)
/**
* hw_test_and_set_setup_guard: test & set setup guard (execute without
* interruption)
* @ci: the controller
*
* This function returns guard value
*/
@ -291,6 +303,7 @@ static int hw_test_and_set_setup_guard(struct ci_hdrc *ci)
/**
* hw_usb_set_address: configures USB address (execute without interruption)
* @ci: the controller
* @value: new USB address
*
* This function explicitly sets the address, without the "USBADRA" (advance)
@ -305,6 +318,7 @@ static void hw_usb_set_address(struct ci_hdrc *ci, u8 value)
/**
* hw_usb_reset: restart device after a bus reset (execute without
* interruption)
* @ci: the controller
*
* This function returns an error code
*/
@ -473,9 +487,10 @@ static void ci_add_buffer_entry(struct td_node *node, struct scatterlist *s)
int empty_td_slot_index = (CI_MAX_BUF_SIZE - node->td_remaining_size)
/ CI_HDRC_PAGE_SIZE;
int i;
u32 token;
node->ptr->token +=
cpu_to_le32(sg_dma_len(s) << __ffs(TD_TOTAL_BYTES));
token = le32_to_cpu(node->ptr->token) + (sg_dma_len(s) << __ffs(TD_TOTAL_BYTES));
node->ptr->token = cpu_to_le32(token);
for (i = empty_td_slot_index; i < TD_PAGE_COUNT; i++) {
u32 page = (u32) sg_dma_address(s) +
@ -610,7 +625,7 @@ done:
return ret;
}
/*
/**
* free_pending_td: remove a pending request for the endpoint
* @hwep: endpoint
*/
@ -636,8 +651,8 @@ static int reprime_dtd(struct ci_hdrc *ci, struct ci_hw_ep *hwep,
/**
* _hardware_dequeue: handles a request at hardware level
* @gadget: gadget
* @hwep: endpoint
* @hwep: endpoint
* @hwreq: request
*
* This function returns an error code
*/
@ -1215,11 +1230,11 @@ __acquires(ci->lock)
case USB_DEVICE_TEST_MODE:
tmode = le16_to_cpu(req.wIndex) >> 8;
switch (tmode) {
case TEST_J:
case TEST_K:
case TEST_SE0_NAK:
case TEST_PACKET:
case TEST_FORCE_EN:
case USB_TEST_J:
case USB_TEST_K:
case USB_TEST_SE0_NAK:
case USB_TEST_PACKET:
case USB_TEST_FORCE_ENABLE:
ci->test_mode = tmode;
err = isr_setup_status_phase(
ci);
@ -1316,7 +1331,7 @@ __acquires(ci->lock)
/******************************************************************************
* ENDPT block
*****************************************************************************/
/**
/*
* ep_enable: configure endpoint, making it usable
*
* Check usb_ep_enable() at "usb_gadget.h" for details
@ -1384,7 +1399,7 @@ static int ep_enable(struct usb_ep *ep,
return retval;
}
/**
/*
* ep_disable: endpoint is no longer usable
*
* Check usb_ep_disable() at "usb_gadget.h" for details
@ -1424,7 +1439,7 @@ static int ep_disable(struct usb_ep *ep)
return retval;
}
/**
/*
* ep_alloc_request: allocate a request object to use with this endpoint
*
* Check usb_ep_alloc_request() at "usb_gadget.h" for details
@ -1445,7 +1460,7 @@ static struct usb_request *ep_alloc_request(struct usb_ep *ep, gfp_t gfp_flags)
return (hwreq == NULL) ? NULL : &hwreq->req;
}
/**
/*
* ep_free_request: frees a request object
*
* Check usb_ep_free_request() at "usb_gadget.h" for details
@ -1478,7 +1493,7 @@ static void ep_free_request(struct usb_ep *ep, struct usb_request *req)
spin_unlock_irqrestore(hwep->lock, flags);
}
/**
/*
* ep_queue: queues (submits) an I/O request to an endpoint
*
* Check usb_ep_queue()* at usb_gadget.h" for details
@ -1503,7 +1518,7 @@ static int ep_queue(struct usb_ep *ep, struct usb_request *req,
return retval;
}
/**
/*
* ep_dequeue: dequeues (cancels, unlinks) an I/O request from an endpoint
*
* Check usb_ep_dequeue() at "usb_gadget.h" for details
@ -1547,7 +1562,7 @@ static int ep_dequeue(struct usb_ep *ep, struct usb_request *req)
return 0;
}
/**
/*
* ep_set_halt: sets the endpoint halt feature
*
* Check usb_ep_set_halt() at "usb_gadget.h" for details
@ -1557,7 +1572,7 @@ static int ep_set_halt(struct usb_ep *ep, int value)
return _ep_set_halt(ep, value, true);
}
/**
/*
* ep_set_wedge: sets the halt feature and ignores clear requests
*
* Check usb_ep_set_wedge() at "usb_gadget.h" for details
@ -1577,7 +1592,7 @@ static int ep_set_wedge(struct usb_ep *ep)
return usb_ep_set_halt(ep);
}
/**
/*
* ep_fifo_flush: flushes contents of a fifo
*
* Check usb_ep_fifo_flush() at "usb_gadget.h" for details
@ -1603,7 +1618,7 @@ static void ep_fifo_flush(struct usb_ep *ep)
spin_unlock_irqrestore(hwep->lock, flags);
}
/**
/*
* Endpoint-specific part of the API to the USB controller hardware
* Check "usb_gadget.h" for details
*/
@ -1622,7 +1637,7 @@ static const struct usb_ep_ops usb_ep_ops = {
/******************************************************************************
* GADGET block
*****************************************************************************/
/**
/*
* ci_hdrc_gadget_connect: caller makes sure gadget driver is binded
*/
static void ci_hdrc_gadget_connect(struct usb_gadget *_gadget, int is_active)
@ -1772,7 +1787,7 @@ static struct usb_ep *ci_udc_match_ep(struct usb_gadget *gadget,
return NULL;
}
/**
/*
* Device operations part of the API to the USB controller hardware,
* which don't involve endpoints (or i/o)
* Check "usb_gadget.h" for details
@ -1924,7 +1939,7 @@ static void ci_udc_stop_for_otg_fsm(struct ci_hdrc *ci)
mutex_unlock(&ci->fsm.lock);
}
/**
/*
* ci_udc_stop: unregister a gadget driver
*/
static int ci_udc_stop(struct usb_gadget *gadget)
@ -1955,7 +1970,7 @@ static int ci_udc_stop(struct usb_gadget *gadget)
/******************************************************************************
* BUS block
*****************************************************************************/
/**
/*
* udc_irq: ci interrupt handler
*
* This function returns IRQ_HANDLED if the IRQ has been handled
@ -2086,7 +2101,7 @@ free_qh_pool:
return retval;
}
/**
/*
* ci_hdrc_gadget_destroy: parent remove must call this to remove UDC
*
* No interrupts active, the IRQ has been released
@ -2136,7 +2151,7 @@ static void udc_id_switch_for_host(struct ci_hdrc *ci)
/**
* ci_hdrc_gadget_init - initialize device related bits
* ci: the controller
* @ci: the controller
*
* This function initializes the gadget, if the device is "device capable".
*/

6
drivers/usb/chipidea/usbmisc_imx.c
View File

@ -367,10 +367,10 @@ static u32 usbmisc_wakeup_setting(struct imx_usbmisc_data *data)
{
u32 wakeup_setting = MX6_USB_OTG_WAKEUP_BITS;
if (data->ext_id)
if (data->ext_id || data->available_role != USB_DR_MODE_OTG)
wakeup_setting &= ~MX6_BM_ID_WAKEUP;
if (data->ext_vbus)
if (data->ext_vbus || data->available_role == USB_DR_MODE_HOST)
wakeup_setting &= ~MX6_BM_VBUS_WAKEUP;
return wakeup_setting;
@ -789,7 +789,7 @@ static int imx7d_charger_primary_detection(struct imx_usbmisc_data *data)
return 0;
}
/**
/*
* Whole charger detection process:
* 1. OPMODE override to be non-driving
* 2. Data contact check

3
drivers/usb/class/cdc-wdm.c
View File

@ -940,7 +940,8 @@ err:
* @intf: usb interface the subdriver will associate with
* @ep: interrupt endpoint to monitor for notifications
* @bufsize: maximum message size to support for read/write
*
* @manage_power: call-back invoked during open and release to
* manage the device's power
* Create WDM usb class character device and associate it with intf
* without binding, allowing another driver to manage the interface.
*

4
drivers/usb/class/usbtmc.c
View File

@ -1,5 +1,5 @@
// SPDX-License-Identifier: GPL-2.0+
/**
/*
* drivers/usb/class/usbtmc.c - USB Test & Measurement class driver
*
* Copyright (C) 2007 Stefan Kopp, Gechingen, Germany
@ -2282,7 +2282,7 @@ static void usbtmc_interrupt(struct urb *urb)
case -EOVERFLOW:
dev_err(dev, "overflow with length %d, actual length is %d\n",
data->iin_wMaxPacketSize, urb->actual_length);
/* fall through */
fallthrough;
case -ECONNRESET:
case -ENOENT:
case -ESHUTDOWN:

1
drivers/usb/common/Kconfig
View File

@ -40,6 +40,7 @@ config USB_CONN_GPIO
tristate "USB GPIO Based Connection Detection Driver"
depends on GPIOLIB
select USB_ROLE_SWITCH
select POWER_SUPPLY
help
The driver supports USB role switch between host and device via GPIO
based USB cable detection, used typically if an input GPIO is used

16
drivers/usb/common/debug.c
View File

@ -1,8 +1,8 @@
// SPDX-License-Identifier: GPL-2.0
/**
/*
* Common USB debugging functions
*
* Copyright (C) 2010-2011 Texas Instruments Incorporated - http://www.ti.com
* Copyright (C) 2010-2011 Texas Instruments Incorporated - https://www.ti.com
*
* Authors: Felipe Balbi <balbi@ti.com>,
* Sebastian Andrzej Siewior <bigeasy@linutronix.de>
@ -53,15 +53,15 @@ static const char *usb_decode_device_feature(u16 wValue)
static const char *usb_decode_test_mode(u16 wIndex)
{
switch (wIndex) {
case TEST_J:
case USB_TEST_J:
return ": TEST_J";
case TEST_K:
case USB_TEST_K:
return ": TEST_K";
case TEST_SE0_NAK:
case USB_TEST_SE0_NAK:
return ": TEST_SE0_NAK";
case TEST_PACKET:
case USB_TEST_PACKET:
return ": TEST_PACKET";
case TEST_FORCE_EN:
case USB_TEST_FORCE_ENABLE:
return ": TEST_FORCE_EN";
default:
return ": UNKNOWN";
@ -207,7 +207,7 @@ static void usb_decode_set_isoch_delay(__u8 wValue, char *str, size_t size)
snprintf(str, size, "Set Isochronous Delay(Delay = %d ns)", wValue);
}
/**
/*
* usb_decode_ctrl - returns a string representation of ctrl request
*/
const char *usb_decode_ctrl(char *str, size_t size, __u8 bRequestType,

5
drivers/usb/common/ulpi.c
View File

@ -1,5 +1,5 @@
// SPDX-License-Identifier: GPL-2.0
/**
/*
* ulpi.c - USB ULPI PHY bus
*
* Copyright (C) 2015 Intel Corporation
@ -143,6 +143,7 @@ static const struct device_type ulpi_dev_type = {
/**
* ulpi_register_driver - register a driver with the ULPI bus
* @drv: driver being registered
* @module: ends up being THIS_MODULE
*
* Registers a driver with the ULPI bus.
*/
@ -290,7 +291,7 @@ EXPORT_SYMBOL_GPL(ulpi_register_interface);
/**
* ulpi_unregister_interface - unregister ULPI interface
* @intrf: struct ulpi_interface
* @ulpi: struct ulpi_interface
*
* Unregisters a ULPI device and it's interface that was created with
* ulpi_create_interface().

47
drivers/usb/common/usb-conn-gpio.c
View File

@ -17,6 +17,7 @@
#include <linux/of.h>
#include <linux/pinctrl/consumer.h>
#include <linux/platform_device.h>
#include <linux/power_supply.h>
#include <linux/regulator/consumer.h>
#include <linux/usb/role.h>
@ -38,9 +39,12 @@ struct usb_conn_info {
struct gpio_desc *vbus_gpiod;
int id_irq;
int vbus_irq;
struct power_supply_desc desc;
struct power_supply *charger;
};
/**
/*
* "DEVICE" = VBUS and "HOST" = !ID, so we have:
* Both "DEVICE" and "HOST" can't be set as active at the same time
* so if "HOST" is active (i.e. ID is 0) we keep "DEVICE" inactive
@ -104,6 +108,8 @@ static void usb_conn_detect_cable(struct work_struct *work)
dev_dbg(info->dev, "vbus regulator is %s\n",
regulator_is_enabled(info->vbus) ? "enabled" : "disabled");
power_supply_changed(info->charger);
}
static void usb_conn_queue_dwork(struct usb_conn_info *info,
@ -121,10 +127,35 @@ static irqreturn_t usb_conn_isr(int irq, void *dev_id)
return IRQ_HANDLED;
}
static enum power_supply_property usb_charger_properties[] = {
POWER_SUPPLY_PROP_ONLINE,
};
static int usb_charger_get_property(struct power_supply *psy,
enum power_supply_property psp,
union power_supply_propval *val)
{
struct usb_conn_info *info = power_supply_get_drvdata(psy);
switch (psp) {
case POWER_SUPPLY_PROP_ONLINE:
val->intval = info->last_role == USB_ROLE_DEVICE;
break;
default:
return -EINVAL;
}
return 0;
}
static int usb_conn_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct power_supply_desc *desc;
struct usb_conn_info *info;
struct power_supply_config cfg = {
.of_node = dev->of_node,
};
int ret = 0;
info = devm_kzalloc(dev, sizeof(*info), GFP_KERNEL);
@ -203,6 +234,20 @@ static int usb_conn_probe(struct platform_device *pdev)
}
}
desc = &info->desc;
desc->name = "usb-charger";
desc->properties = usb_charger_properties;
desc->num_properties = ARRAY_SIZE(usb_charger_properties);
desc->get_property = usb_charger_get_property;
desc->type = POWER_SUPPLY_TYPE_USB;
cfg.drv_data = info;
info->charger = devm_power_supply_register(dev, desc, &cfg);
if (IS_ERR(info->charger)) {
dev_err(dev, "Unable to register charger\n");
return PTR_ERR(info->charger);
}
platform_set_drvdata(pdev, info);
/* Perform initial detection */

8
drivers/usb/core/Kconfig
View File

@ -55,18 +55,18 @@ config USB_OTG
Select this only if your board has Mini-AB/Micro-AB
connector.
config USB_OTG_WHITELIST
config USB_OTG_PRODUCTLIST
bool "Rely on OTG and EH Targeted Peripherals List"
depends on USB
help
If you say Y here, the "otg_whitelist.h" file will be used as a
product whitelist, so USB peripherals not listed there will be
If you say Y here, the "otg_productlist.h" file will be used as a
product list, so USB peripherals not listed there will be
rejected during enumeration. This behavior is required by the
USB OTG and EH specification for all devices not on your product's
"Targeted Peripherals List". "Embedded Hosts" are likewise
allowed to support only a limited number of peripherals.
config USB_OTG_BLACKLIST_HUB
config USB_OTG_DISABLE_EXTERNAL_HUB
bool "Disable external hubs"
depends on USB_OTG || EXPERT
help

10
drivers/usb/core/config.c
View File

@ -298,10 +298,10 @@ static int usb_parse_endpoint(struct device *ddev, int cfgno,
goto skip_to_next_endpoint_or_interface_descriptor;
}
/* Ignore blacklisted endpoints */
if (udev->quirks & USB_QUIRK_ENDPOINT_BLACKLIST) {
if (usb_endpoint_is_blacklisted(udev, ifp, d)) {
dev_warn(ddev, "config %d interface %d altsetting %d has a blacklisted endpoint with address 0x%X, skipping\n",
/* Ignore some endpoints */
if (udev->quirks & USB_QUIRK_ENDPOINT_IGNORE) {
if (usb_endpoint_is_ignored(udev, ifp, d)) {
dev_warn(ddev, "config %d interface %d altsetting %d has an ignored endpoint with address 0x%X, skipping\n",
cfgno, inum, asnum,
d->bEndpointAddress);
goto skip_to_next_endpoint_or_interface_descriptor;
@ -427,7 +427,7 @@ static int usb_parse_endpoint(struct device *ddev, int cfgno,
i = maxp & (BIT(12) | BIT(11));
maxp &= ~i;
}
/* fallthrough */
fallthrough;
default:
maxpacket_maxes = high_speed_maxpacket_maxes;
break;

4
drivers/usb/core/devices.c
View File

@ -133,6 +133,10 @@ static const struct class_info clas_info[] = {
{USB_CLASS_CSCID, "scard"},
{USB_CLASS_CONTENT_SEC, "c-sec"},
{USB_CLASS_VIDEO, "video"},
{USB_CLASS_PERSONAL_HEALTHCARE, "perhc"},
{USB_CLASS_AUDIO_VIDEO, "av"},
{USB_CLASS_BILLBOARD, "blbrd"},
{USB_CLASS_USB_TYPE_C_BRIDGE, "bridg"},
{USB_CLASS_WIRELESS_CONTROLLER, "wlcon"},
{USB_CLASS_MISC, "misc"},
{USB_CLASS_APP_SPEC, "app."},

126
drivers/usb/core/devio.c
View File

@ -1102,22 +1102,20 @@ static int usbdev_release(struct inode *inode, struct file *file)
return 0;
}
static int proc_control(struct usb_dev_state *ps, void __user *arg)
static int do_proc_control(struct usb_dev_state *ps,
struct usbdevfs_ctrltransfer *ctrl)
{
struct usb_device *dev = ps->dev;
struct usbdevfs_ctrltransfer ctrl;
unsigned int tmo;
unsigned char *tbuf;
unsigned wLength;
int i, pipe, ret;
if (copy_from_user(&ctrl, arg, sizeof(ctrl)))
return -EFAULT;
ret = check_ctrlrecip(ps, ctrl.bRequestType, ctrl.bRequest,
ctrl.wIndex);
ret = check_ctrlrecip(ps, ctrl->bRequestType, ctrl->bRequest,
ctrl->wIndex);
if (ret)
return ret;
wLength = ctrl.wLength; /* To suppress 64k PAGE_SIZE warning */
wLength = ctrl->wLength; /* To suppress 64k PAGE_SIZE warning */
if (wLength > PAGE_SIZE)
return -EINVAL;
ret = usbfs_increase_memory_usage(PAGE_SIZE + sizeof(struct urb) +
@ -1129,52 +1127,52 @@ static int proc_control(struct usb_dev_state *ps, void __user *arg)
ret = -ENOMEM;
goto done;
}
tmo = ctrl.timeout;
tmo = ctrl->timeout;
snoop(&dev->dev, "control urb: bRequestType=%02x "
"bRequest=%02x wValue=%04x "
"wIndex=%04x wLength=%04x\n",
ctrl.bRequestType, ctrl.bRequest, ctrl.wValue,
ctrl.wIndex, ctrl.wLength);
if (ctrl.bRequestType & 0x80) {
ctrl->bRequestType, ctrl->bRequest, ctrl->wValue,
ctrl->wIndex, ctrl->wLength);
if (ctrl->bRequestType & 0x80) {
pipe = usb_rcvctrlpipe(dev, 0);
snoop_urb(dev, NULL, pipe, ctrl.wLength, tmo, SUBMIT, NULL, 0);
snoop_urb(dev, NULL, pipe, ctrl->wLength, tmo, SUBMIT, NULL, 0);
usb_unlock_device(dev);
i = usb_control_msg(dev, pipe, ctrl.bRequest,
ctrl.bRequestType, ctrl.wValue, ctrl.wIndex,
tbuf, ctrl.wLength, tmo);
i = usb_control_msg(dev, pipe, ctrl->bRequest,
ctrl->bRequestType, ctrl->wValue, ctrl->wIndex,
tbuf, ctrl->wLength, tmo);
usb_lock_device(dev);
snoop_urb(dev, NULL, pipe, max(i, 0), min(i, 0), COMPLETE,
tbuf, max(i, 0));
if ((i > 0) && ctrl.wLength) {
if (copy_to_user(ctrl.data, tbuf, i)) {
if ((i > 0) && ctrl->wLength) {
if (copy_to_user(ctrl->data, tbuf, i)) {
ret = -EFAULT;
goto done;
}
}
} else {
if (ctrl.wLength) {
if (copy_from_user(tbuf, ctrl.data, ctrl.wLength)) {
if (ctrl->wLength) {
if (copy_from_user(tbuf, ctrl->data, ctrl->wLength)) {
ret = -EFAULT;
goto done;
}
}
pipe = usb_sndctrlpipe(dev, 0);
snoop_urb(dev, NULL, pipe, ctrl.wLength, tmo, SUBMIT,
tbuf, ctrl.wLength);
snoop_urb(dev, NULL, pipe, ctrl->wLength, tmo, SUBMIT,
tbuf, ctrl->wLength);
usb_unlock_device(dev);
i = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), ctrl.bRequest,
ctrl.bRequestType, ctrl.wValue, ctrl.wIndex,
tbuf, ctrl.wLength, tmo);
i = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), ctrl->bRequest,
ctrl->bRequestType, ctrl->wValue, ctrl->wIndex,
tbuf, ctrl->wLength, tmo);
usb_lock_device(dev);
snoop_urb(dev, NULL, pipe, max(i, 0), min(i, 0), COMPLETE, NULL, 0);
}
if (i < 0 && i != -EPIPE) {
dev_printk(KERN_DEBUG, &dev->dev, "usbfs: USBDEVFS_CONTROL "
"failed cmd %s rqt %u rq %u len %u ret %d\n",
current->comm, ctrl.bRequestType, ctrl.bRequest,
ctrl.wLength, i);
current->comm, ctrl->bRequestType, ctrl->bRequest,
ctrl->wLength, i);
}
ret = i;
done:
@ -1184,30 +1182,37 @@ static int proc_control(struct usb_dev_state *ps, void __user *arg)
return ret;
}
static int proc_bulk(struct usb_dev_state *ps, void __user *arg)
static int proc_control(struct usb_dev_state *ps, void __user *arg)
{
struct usbdevfs_ctrltransfer ctrl;
if (copy_from_user(&ctrl, arg, sizeof(ctrl)))
return -EFAULT;
return do_proc_control(ps, &ctrl);
}
static int do_proc_bulk(struct usb_dev_state *ps,
struct usbdevfs_bulktransfer *bulk)
{
struct usb_device *dev = ps->dev;
struct usbdevfs_bulktransfer bulk;
unsigned int tmo, len1, pipe;
int len2;
unsigned char *tbuf;
int i, ret;
if (copy_from_user(&bulk, arg, sizeof(bulk)))
return -EFAULT;
ret = findintfep(ps->dev, bulk.ep);
ret = findintfep(ps->dev, bulk->ep);
if (ret < 0)
return ret;
ret = checkintf(ps, ret);
if (ret)
return ret;
if (bulk.ep & USB_DIR_IN)
pipe = usb_rcvbulkpipe(dev, bulk.ep & 0x7f);
if (bulk->ep & USB_DIR_IN)
pipe = usb_rcvbulkpipe(dev, bulk->ep & 0x7f);
else
pipe = usb_sndbulkpipe(dev, bulk.ep & 0x7f);
if (!usb_maxpacket(dev, pipe, !(bulk.ep & USB_DIR_IN)))
pipe = usb_sndbulkpipe(dev, bulk->ep & 0x7f);
if (!usb_maxpacket(dev, pipe, !(bulk->ep & USB_DIR_IN)))
return -EINVAL;
len1 = bulk.len;
len1 = bulk->len;
if (len1 >= (INT_MAX - sizeof(struct urb)))
return -EINVAL;
ret = usbfs_increase_memory_usage(len1 + sizeof(struct urb));
@ -1218,8 +1223,8 @@ static int proc_bulk(struct usb_dev_state *ps, void __user *arg)
ret = -ENOMEM;
goto done;
}
tmo = bulk.timeout;
if (bulk.ep & 0x80) {
tmo = bulk->timeout;
if (bulk->ep & 0x80) {
snoop_urb(dev, NULL, pipe, len1, tmo, SUBMIT, NULL, 0);
usb_unlock_device(dev);
@ -1228,14 +1233,14 @@ static int proc_bulk(struct usb_dev_state *ps, void __user *arg)
snoop_urb(dev, NULL, pipe, len2, i, COMPLETE, tbuf, len2);
if (!i && len2) {
if (copy_to_user(bulk.data, tbuf, len2)) {
if (copy_to_user(bulk->data, tbuf, len2)) {
ret = -EFAULT;
goto done;
}
}
} else {
if (len1) {
if (copy_from_user(tbuf, bulk.data, len1)) {
if (copy_from_user(tbuf, bulk->data, len1)) {
ret = -EFAULT;
goto done;
}
@ -1254,6 +1259,15 @@ static int proc_bulk(struct usb_dev_state *ps, void __user *arg)
return ret;
}
static int proc_bulk(struct usb_dev_state *ps, void __user *arg)
{
struct usbdevfs_bulktransfer bulk;
if (copy_from_user(&bulk, arg, sizeof(bulk)))
return -EFAULT;
return do_proc_bulk(ps, &bulk);
}
static void check_reset_of_active_ep(struct usb_device *udev,
unsigned int epnum, char *ioctl_name)
{
@ -2013,33 +2027,31 @@ static int proc_reapurbnonblock(struct usb_dev_state *ps, void __user *arg)
static int proc_control_compat(struct usb_dev_state *ps,
struct usbdevfs_ctrltransfer32 __user *p32)
{
struct usbdevfs_ctrltransfer __user *p;
__u32 udata;
p = compat_alloc_user_space(sizeof(*p));
if (copy_in_user(p, p32, (sizeof(*p32) - sizeof(compat_caddr_t))) ||
get_user(udata, &p32->data) ||
put_user(compat_ptr(udata), &p->data))
struct usbdevfs_ctrltransfer ctrl;
u32 udata;
if (copy_from_user(&ctrl, p32, sizeof(*p32) - sizeof(compat_caddr_t)) ||
get_user(udata, &p32->data))
return -EFAULT;
return proc_control(ps, p);
ctrl.data = compat_ptr(udata);
return do_proc_control(ps, &ctrl);
}
static int proc_bulk_compat(struct usb_dev_state *ps,
struct usbdevfs_bulktransfer32 __user *p32)
{
struct usbdevfs_bulktransfer __user *p;
compat_uint_t n;
struct usbdevfs_bulktransfer bulk;
compat_caddr_t addr;
p = compat_alloc_user_space(sizeof(*p));
if (get_user(n, &p32->ep) || put_user(n, &p->ep) ||
get_user(n, &p32->len) || put_user(n, &p->len) ||
get_user(n, &p32->timeout) || put_user(n, &p->timeout) ||
get_user(addr, &p32->data) || put_user(compat_ptr(addr), &p->data))
if (get_user(bulk.ep, &p32->ep) ||
get_user(bulk.len, &p32->len) ||
get_user(bulk.timeout, &p32->timeout) ||
get_user(addr, &p32->data))
return -EFAULT;
return proc_bulk(ps, p);
bulk.data = compat_ptr(addr);
return do_proc_bulk(ps, &bulk);
}
static int proc_disconnectsignal_compat(struct usb_dev_state *ps, void __user *arg)
{
struct usbdevfs_disconnectsignal32 ds;

2
drivers/usb/core/generic.c
View File

@ -205,8 +205,6 @@ static int __check_usb_generic(struct device_driver *drv, void *data)
udrv = to_usb_device_driver(drv);
if (udrv == &usb_generic_driver)
return 0;
if (!udrv->id_table)
return 0;
return usb_device_match_id(udev, udrv->id_table) != NULL;
}

14
drivers/usb/core/hcd-pci.c
View File

@ -194,20 +194,21 @@ int usb_hcd_pci_probe(struct pci_dev *dev, const struct pci_device_id *id,
* make sure irq setup is not touched for xhci in generic hcd code
*/
if ((driver->flags & HCD_MASK) < HCD_USB3) {
if (!dev->irq) {
retval = pci_alloc_irq_vectors(dev, 1, 1, PCI_IRQ_LEGACY | PCI_IRQ_MSI);
if (retval < 0) {
dev_err(&dev->dev,
"Found HC with no IRQ. Check BIOS/PCI %s setup!\n",
pci_name(dev));
retval = -ENODEV;
goto disable_pci;
}
hcd_irq = dev->irq;
hcd_irq = pci_irq_vector(dev, 0);
}
hcd = usb_create_hcd(driver, &dev->dev, pci_name(dev));
if (!hcd) {
retval = -ENOMEM;
goto disable_pci;
goto free_irq_vectors;
}
hcd->amd_resume_bug = (usb_hcd_amd_remote_wakeup_quirk(dev) &&
@ -286,6 +287,9 @@ int usb_hcd_pci_probe(struct pci_dev *dev, const struct pci_device_id *id,
put_hcd:
usb_put_hcd(hcd);
free_irq_vectors:
if ((driver->flags & HCD_MASK) < HCD_USB3)
pci_free_irq_vectors(dev);
disable_pci:
pci_disable_device(dev);
dev_err(&dev->dev, "init %s fail, %d\n", pci_name(dev), retval);
@ -343,6 +347,8 @@ void usb_hcd_pci_remove(struct pci_dev *dev)
up_read(&companions_rwsem);
}
usb_put_hcd(hcd);
if ((hcd->driver->flags & HCD_MASK) < HCD_USB3)
pci_free_irq_vectors(dev);
pci_disable_device(dev);
}
EXPORT_SYMBOL_GPL(usb_hcd_pci_remove);
@ -454,7 +460,7 @@ static int suspend_common(struct device *dev, bool do_wakeup)
* synchronized here.
*/
if (!hcd->msix_enabled)
synchronize_irq(pci_dev->irq);
synchronize_irq(pci_irq_vector(pci_dev, 0));
/* Downstream ports from this root hub should already be quiesced, so
* there will be no DMA activity. Now we can shut down the upstream

8
drivers/usb/core/hcd.c
View File

@ -564,7 +564,7 @@ static int rh_call_control (struct usb_hcd *hcd, struct urb *urb)
case DeviceRequest | USB_REQ_GET_CONFIGURATION:
tbuf[0] = 1;
len = 1;
/* FALLTHROUGH */
fallthrough;
case DeviceOutRequest | USB_REQ_SET_CONFIGURATION:
break;
case DeviceRequest | USB_REQ_GET_DESCRIPTOR:
@ -633,7 +633,7 @@ static int rh_call_control (struct usb_hcd *hcd, struct urb *urb)
case DeviceRequest | USB_REQ_GET_INTERFACE:
tbuf[0] = 0;
len = 1;
/* FALLTHROUGH */
fallthrough;
case DeviceOutRequest | USB_REQ_SET_INTERFACE:
break;
case DeviceOutRequest | USB_REQ_SET_ADDRESS:
@ -651,7 +651,7 @@ static int rh_call_control (struct usb_hcd *hcd, struct urb *urb)
tbuf[0] = 0;
tbuf[1] = 0;
len = 2;
/* FALLTHROUGH */
fallthrough;
case EndpointOutRequest | USB_REQ_CLEAR_FEATURE:
case EndpointOutRequest | USB_REQ_SET_FEATURE:
dev_dbg (hcd->self.controller, "no endpoint features yet\n");
@ -2726,7 +2726,7 @@ int usb_add_hcd(struct usb_hcd *hcd,
case HCD_USB32:
rhdev->rx_lanes = 2;
rhdev->tx_lanes = 2;
/* fall through */
fallthrough;
case HCD_USB31:
rhdev->speed = USB_SPEED_SUPER_PLUS;
break;

8
drivers/usb/core/hub.c
View File

@ -35,7 +35,7 @@
#include <asm/byteorder.h>
#include "hub.h"
#include "otg_whitelist.h"
#include "otg_productlist.h"
#define USB_VENDOR_GENESYS_LOGIC 0x05e3
#define USB_VENDOR_SMSC 0x0424
@ -1834,7 +1834,7 @@ static int hub_probe(struct usb_interface *intf, const struct usb_device_id *id)
return -E2BIG;
}
#ifdef CONFIG_USB_OTG_BLACKLIST_HUB
#ifdef CONFIG_USB_OTG_DISABLE_EXTERNAL_HUB
if (hdev->parent) {
dev_warn(&intf->dev, "ignoring external hub\n");
return -ENODEV;
@ -2403,7 +2403,7 @@ static int usb_enumerate_device(struct usb_device *udev)
if (err < 0)
return err;
if (IS_ENABLED(CONFIG_USB_OTG_WHITELIST) && hcd->tpl_support &&
if (IS_ENABLED(CONFIG_USB_OTG_PRODUCTLIST) && hcd->tpl_support &&
!is_targeted(udev)) {
/* Maybe it can talk to us, though we can't talk to it.
* (Includes HNP test device.)
@ -4698,7 +4698,7 @@ hub_port_init(struct usb_hub *hub, struct usb_device *udev, int port1,
r = 0;
break;
}
/* FALL THROUGH */
fallthrough;
default:
if (r == 0)
r = -EPROTO;

6
drivers/usb/core/ledtrig-usbport.c
View File

@ -34,7 +34,7 @@ struct usbport_trig_port {
* Helpers
***************************************/
/**
/*
* usbport_trig_usb_dev_observed - Check if dev is connected to observed port
*/
static bool usbport_trig_usb_dev_observed(struct usbport_trig_data *usbport_data,
@ -64,7 +64,7 @@ static int usbport_trig_usb_dev_check(struct usb_device *usb_dev, void *data)
return 0;
}
/**
/*
* usbport_trig_update_count - Recalculate amount of connected matching devices
*/
static void usbport_trig_update_count(struct usbport_trig_data *usbport_data)
@ -123,7 +123,7 @@ static const struct attribute_group ports_group = {
* Adding & removing ports
***************************************/
/**
/*
* usbport_trig_port_observed - Check if port should be observed
*/
static bool usbport_trig_port_observed(struct usbport_trig_data *usbport_data,

2
drivers/usb/core/of.c
View File

@ -45,7 +45,7 @@ EXPORT_SYMBOL_GPL(usb_of_get_device_node);
*
* Determine whether a USB device has a so called combined node which is
* shared with its sole interface. This is the case if and only if the device
* has a node and its decriptors report the following:
* has a node and its descriptors report the following:
*
* 1) bDeviceClass is 0 or 9, and
* 2) bNumConfigurations is 1, and

14
drivers/usb/core/otg_whitelist.h → drivers/usb/core/otg_productlist.h
View File

@ -1,18 +1,14 @@
/* SPDX-License-Identifier: GPL-2.0+ */
/*
* drivers/usb/core/otg_whitelist.h
*
* Copyright (C) 2004 Texas Instruments
*/
/* Copyright (C) 2004 Texas Instruments */
/*
* This OTG and Embedded Host Whitelist is "Targeted Peripheral List".
* This OTG and Embedded Host list is "Targeted Peripheral List".
* It should mostly use of USB_DEVICE() or USB_DEVICE_VER() entries..
*
* YOU _SHOULD_ CHANGE THIS LIST TO MATCH YOUR PRODUCT AND ITS TESTING!
*/
static struct usb_device_id whitelist_table[] = {
static struct usb_device_id productlist_table[] = {
/* hubs are optional in OTG, but very handy ... */
{ USB_DEVICE_INFO(USB_CLASS_HUB, 0, 0), },
@ -44,7 +40,7 @@ static struct usb_device_id whitelist_table[] = {
static int is_targeted(struct usb_device *dev)
{
struct usb_device_id *id = whitelist_table;
struct usb_device_id *id = productlist_table;
/* HNP test device is _never_ targeted (see OTG spec 6.6.6) */
if ((le16_to_cpu(dev->descriptor.idVendor) == 0x1a0a &&
@ -59,7 +55,7 @@ static int is_targeted(struct usb_device *dev)
/* NOTE: can't use usb_match_id() since interface caches
* aren't set up yet. this is cut/paste from that code.
*/
for (id = whitelist_table; id->match_flags; id++) {
for (id = productlist_table; id->match_flags; id++) {
if ((id->match_flags & USB_DEVICE_ID_MATCH_VENDOR) &&
id->idVendor != le16_to_cpu(dev->descriptor.idVendor))
continue;

34
drivers/usb/core/quirks.c
View File

@ -25,17 +25,23 @@ static unsigned int quirk_count;
static char quirks_param[128];
static int quirks_param_set(const char *val, const struct kernel_param *kp)
static int quirks_param_set(const char *value, const struct kernel_param *kp)
{
char *p, *field;
char *val, *p, *field;
u16 vid, pid;
u32 flags;
size_t i;
int err;
val = kstrdup(value, GFP_KERNEL);
if (!val)
return -ENOMEM;
err = param_set_copystring(val, kp);
if (err)
if (err) {
kfree(val);
return err;
}
mutex_lock(&quirk_mutex);
@ -60,10 +66,11 @@ static int quirks_param_set(const char *val, const struct kernel_param *kp)
if (!quirk_list) {
quirk_count = 0;
mutex_unlock(&quirk_mutex);
kfree(val);
return -ENOMEM;
}
for (i = 0, p = (char *)val; p && *p;) {
for (i = 0, p = val; p && *p;) {
/* Each entry consists of VID:PID:flags */
field = strsep(&p, ":");
if (!field)
@ -144,6 +151,7 @@ static int quirks_param_set(const char *val, const struct kernel_param *kp)
unlock:
mutex_unlock(&quirk_mutex);
kfree(val);
return 0;
}
@ -360,7 +368,7 @@ static const struct usb_device_id usb_quirk_list[] = {
/* Sound Devices USBPre2 */
{ USB_DEVICE(0x0926, 0x0202), .driver_info =
USB_QUIRK_ENDPOINT_BLACKLIST },
USB_QUIRK_ENDPOINT_IGNORE },
/* Keytouch QWERTY Panel keyboard */
{ USB_DEVICE(0x0926, 0x3333), .driver_info =
@ -494,24 +502,24 @@ static const struct usb_device_id usb_amd_resume_quirk_list[] = {
};
/*
* Entries for blacklisted endpoints that should be ignored when parsing
* configuration descriptors.
* Entries for endpoints that should be ignored when parsing configuration
* descriptors.
*
* Matched for devices with USB_QUIRK_ENDPOINT_BLACKLIST.
* Matched for devices with USB_QUIRK_ENDPOINT_IGNORE.
*/
static const struct usb_device_id usb_endpoint_blacklist[] = {
static const struct usb_device_id usb_endpoint_ignore[] = {
{ USB_DEVICE_INTERFACE_NUMBER(0x0926, 0x0202, 1), .driver_info = 0x85 },
{ }
};
bool usb_endpoint_is_blacklisted(struct usb_device *udev,
struct usb_host_interface *intf,
struct usb_endpoint_descriptor *epd)
bool usb_endpoint_is_ignored(struct usb_device *udev,
struct usb_host_interface *intf,
struct usb_endpoint_descriptor *epd)
{
const struct usb_device_id *id;
unsigned int address;
for (id = usb_endpoint_blacklist; id->match_flags; ++id) {
for (id = usb_endpoint_ignore; id->match_flags; ++id) {
if (!usb_match_device(udev, id))
continue;

4
drivers/usb/core/urb.c
View File

@ -486,7 +486,7 @@ int usb_submit_urb(struct urb *urb, gfp_t mem_flags)
case USB_ENDPOINT_XFER_INT:
if (is_out)
allowed |= URB_ZERO_PACKET;
/* FALLTHROUGH */
fallthrough;
default: /* all non-iso endpoints */
if (!is_out)
allowed |= URB_SHORT_NOT_OK;
@ -519,7 +519,7 @@ int usb_submit_urb(struct urb *urb, gfp_t mem_flags)
if ((urb->interval < 6)
&& (xfertype == USB_ENDPOINT_XFER_INT))
return -EINVAL;
/* fall through */
fallthrough;
default:
if (urb->interval <= 0)
return -EINVAL;

5
drivers/usb/core/usb.c
View File

@ -19,9 +19,8 @@
* just a collection of helper routines that implement the
* generic USB things that the real drivers can use..
*
* Think of this as a "USB library" rather than anything else.
* It should be considered a slave, with no callbacks. Callbacks
* are evil.
* Think of this as a "USB library" rather than anything else,
* with no callbacks. Callbacks are evil.
*/
#include <linux/module.h>

2
drivers/usb/core/usb.h
View File

@ -37,7 +37,7 @@ extern void usb_authorize_interface(struct usb_interface *);
extern void usb_detect_quirks(struct usb_device *udev);
extern void usb_detect_interface_quirks(struct usb_device *udev);
extern void usb_release_quirk_list(void);
extern bool usb_endpoint_is_blacklisted(struct usb_device *udev,
extern bool usb_endpoint_is_ignored(struct usb_device *udev,
struct usb_host_interface *intf,
struct usb_endpoint_descriptor *epd);
extern int usb_remove_device(struct usb_device *udev);

2
drivers/usb/dwc2/core.h
View File

@ -1036,7 +1036,7 @@ struct dwc2_hregs_backup {
* @fifo_mem: Total internal RAM for FIFOs (bytes)
* @fifo_map: Each bit intend for concrete fifo. If that bit is set,
* then that fifo is used
* @gadget: Represents a usb slave device
* @gadget: Represents a usb gadget device
* @connected: Used in slave mode. True if device connected with host
* @eps_in: The IN endpoints being supplied to the gadget framework
* @eps_out: The OUT endpoints being supplied to the gadget framework

20
drivers/usb/dwc2/debugfs.c
View File

@ -37,15 +37,15 @@ static ssize_t testmode_write(struct file *file, const char __user *ubuf, size_t
return -EFAULT;
if (!strncmp(buf, "test_j", 6))
testmode = TEST_J;
testmode = USB_TEST_J;
else if (!strncmp(buf, "test_k", 6))
testmode = TEST_K;
testmode = USB_TEST_K;
else if (!strncmp(buf, "test_se0_nak", 12))
testmode = TEST_SE0_NAK;
testmode = USB_TEST_SE0_NAK;
else if (!strncmp(buf, "test_packet", 11))
testmode = TEST_PACKET;
testmode = USB_TEST_PACKET;
else if (!strncmp(buf, "test_force_enable", 17))
testmode = TEST_FORCE_EN;
testmode = USB_TEST_FORCE_ENABLE;
else
testmode = 0;
@ -78,19 +78,19 @@ static int testmode_show(struct seq_file *s, void *unused)
case 0:
seq_puts(s, "no test\n");
break;
case TEST_J:
case USB_TEST_J:
seq_puts(s, "test_j\n");
break;
case TEST_K:
case USB_TEST_K:
seq_puts(s, "test_k\n");
break;
case TEST_SE0_NAK:
case USB_TEST_SE0_NAK:
seq_puts(s, "test_se0_nak\n");
break;
case TEST_PACKET:
case USB_TEST_PACKET:
seq_puts(s, "test_packet\n");
break;
case TEST_FORCE_EN:
case USB_TEST_FORCE_ENABLE:
seq_puts(s, "test_force_enable\n");
break;
default:

16
drivers/usb/dwc2/gadget.c
View File

@ -260,6 +260,7 @@ static void dwc2_gadget_wkup_alert_handler(struct dwc2_hsotg *hsotg)
gintsts2 = dwc2_readl(hsotg, GINTSTS2);
gintmsk2 = dwc2_readl(hsotg, GINTMSK2);
gintsts2 &= gintmsk2;
if (gintsts2 & GINTSTS2_WKUP_ALERT_INT) {
dev_dbg(hsotg->dev, "%s: Wkup_Alert_Int\n", __func__);
@ -882,11 +883,10 @@ static int dwc2_gadget_fill_isoc_desc(struct dwc2_hsotg_ep *hs_ep,
struct dwc2_dma_desc *desc;
struct dwc2_hsotg *hsotg = hs_ep->parent;
u32 index;
u32 maxsize = 0;
u32 mask = 0;
u8 pid = 0;
maxsize = dwc2_gadget_get_desc_params(hs_ep, &mask);
dwc2_gadget_get_desc_params(hs_ep, &mask);
index = hs_ep->next_desc;
desc = &hs_ep->desc_list[index];
@ -1561,11 +1561,11 @@ int dwc2_hsotg_set_test_mode(struct dwc2_hsotg *hsotg, int testmode)
dctl &= ~DCTL_TSTCTL_MASK;
switch (testmode) {
case TEST_J:
case TEST_K:
case TEST_SE0_NAK:
case TEST_PACKET:
case TEST_FORCE_EN:
case USB_TEST_J:
case USB_TEST_K:
case USB_TEST_SE0_NAK:
case USB_TEST_PACKET:
case USB_TEST_FORCE_ENABLE:
dctl |= testmode << DCTL_TSTCTL_SHIFT;
break;
default:
@ -2978,10 +2978,8 @@ static void dwc2_hsotg_epint(struct dwc2_hsotg *hsotg, unsigned int idx,
u32 epctl_reg = dir_in ? DIEPCTL(idx) : DOEPCTL(idx);
u32 epsiz_reg = dir_in ? DIEPTSIZ(idx) : DOEPTSIZ(idx);
u32 ints;
u32 ctrl;
ints = dwc2_gadget_read_ep_interrupts(hsotg, idx, dir_in);
ctrl = dwc2_readl(hsotg, epctl_reg);
/* Clear endpoint interrupts */
dwc2_writel(hsotg, ints, epint_reg);

4
drivers/usb/dwc2/hcd.c
View File

@ -3628,7 +3628,7 @@ static int dwc2_hcd_hub_control(struct dwc2_hsotg *hsotg, u16 typereq,
"SetPortFeature - USB_PORT_FEAT_SUSPEND\n");
if (windex != hsotg->otg_port)
goto error;
if (hsotg->params.power_down == 2)
if (hsotg->params.power_down == DWC2_POWER_DOWN_PARAM_HIBERNATION)
dwc2_enter_hibernation(hsotg, 1);
else
dwc2_port_suspend(hsotg, windex);
@ -3646,7 +3646,7 @@ static int dwc2_hcd_hub_control(struct dwc2_hsotg *hsotg, u16 typereq,
break;
case USB_PORT_FEAT_RESET:
if (hsotg->params.power_down == 2 &&
if (hsotg->params.power_down == DWC2_POWER_DOWN_PARAM_HIBERNATION &&
hsotg->hibernated)
dwc2_exit_hibernation(hsotg, 0, 1, 1);
hprt0 = dwc2_read_hprt0(hsotg);

12
drivers/usb/dwc2/params.c
View File

@ -68,14 +68,14 @@ static void dwc2_set_his_params(struct dwc2_hsotg *hsotg)
p->ahbcfg = GAHBCFG_HBSTLEN_INCR16 <<
GAHBCFG_HBSTLEN_SHIFT;
p->change_speed_quirk = true;
p->power_down = false;
p->power_down = DWC2_POWER_DOWN_PARAM_NONE;
}
static void dwc2_set_s3c6400_params(struct dwc2_hsotg *hsotg)
{
struct dwc2_core_params *p = &hsotg->params;
p->power_down = 0;
p->power_down = DWC2_POWER_DOWN_PARAM_NONE;
p->phy_utmi_width = 8;
}
@ -89,7 +89,7 @@ static void dwc2_set_rk_params(struct dwc2_hsotg *hsotg)
p->host_perio_tx_fifo_size = 256;
p->ahbcfg = GAHBCFG_HBSTLEN_INCR16 <<
GAHBCFG_HBSTLEN_SHIFT;
p->power_down = 0;
p->power_down = DWC2_POWER_DOWN_PARAM_NONE;
}
static void dwc2_set_ltq_params(struct dwc2_hsotg *hsotg)
@ -319,11 +319,11 @@ static void dwc2_set_param_power_down(struct dwc2_hsotg *hsotg)
int val;
if (hsotg->hw_params.hibernation)
val = 2;
val = DWC2_POWER_DOWN_PARAM_HIBERNATION;
else if (hsotg->hw_params.power_optimized)
val = 1;
val = DWC2_POWER_DOWN_PARAM_PARTIAL;
else
val = 0;
val = DWC2_POWER_DOWN_PARAM_NONE;
hsotg->params.power_down = val;
}

4
drivers/usb/dwc2/platform.c
View File

@ -582,6 +582,7 @@ static int dwc2_driver_probe(struct platform_device *dev)
if (hsotg->gadget_enabled) {
retval = usb_add_gadget_udc(hsotg->dev, &hsotg->gadget);
if (retval) {
hsotg->gadget.udc = NULL;
dwc2_hsotg_remove(hsotg);
goto error_init;
}
@ -593,7 +594,8 @@ error_init:
if (hsotg->params.activate_stm_id_vb_detection)
regulator_disable(hsotg->usb33d);
error:
dwc2_lowlevel_hw_disable(hsotg);
if (hsotg->dr_mode != USB_DR_MODE_PERIPHERAL)
dwc2_lowlevel_hw_disable(hsotg);
return retval;
}

2
drivers/usb/dwc3/core.c
View File

@ -2,7 +2,7 @@
/**
* core.c - DesignWare USB3 DRD Controller Core file
*
* Copyright (C) 2010-2011 Texas Instruments Incorporated - http://www.ti.com
* Copyright (C) 2010-2011 Texas Instruments Incorporated - https://www.ti.com
*
* Authors: Felipe Balbi <balbi@ti.com>,
* Sebastian Andrzej Siewior <bigeasy@linutronix.de>

2
drivers/usb/dwc3/core.h
View File

@ -2,7 +2,7 @@
/*
* core.h - DesignWare USB3 DRD Core Header
*
* Copyright (C) 2010-2011 Texas Instruments Incorporated - http://www.ti.com
* Copyright (C) 2010-2011 Texas Instruments Incorporated - https://www.ti.com
*
* Authors: Felipe Balbi <balbi@ti.com>,
* Sebastian Andrzej Siewior <bigeasy@linutronix.de>

2
drivers/usb/dwc3/debug.h
View File

@ -2,7 +2,7 @@
/**
* debug.h - DesignWare USB3 DRD Controller Debug Header
*
* Copyright (C) 2010-2011 Texas Instruments Incorporated - http://www.ti.com
* Copyright (C) 2010-2011 Texas Instruments Incorporated - https://www.ti.com
*
* Authors: Felipe Balbi <balbi@ti.com>,
* Sebastian Andrzej Siewior <bigeasy@linutronix.de>

22
drivers/usb/dwc3/debugfs.c
View File

@ -2,7 +2,7 @@
/**
* debugfs.c - DesignWare USB3 DRD Controller DebugFS file
*
* Copyright (C) 2010-2011 Texas Instruments Incorporated - http://www.ti.com
* Copyright (C) 2010-2011 Texas Instruments Incorporated - https://www.ti.com
*
* Authors: Felipe Balbi <balbi@ti.com>,
* Sebastian Andrzej Siewior <bigeasy@linutronix.de>
@ -466,19 +466,19 @@ static int dwc3_testmode_show(struct seq_file *s, void *unused)
case 0:
seq_printf(s, "no test\n");
break;
case TEST_J:
case USB_TEST_J:
seq_printf(s, "test_j\n");
break;
case TEST_K:
case USB_TEST_K:
seq_printf(s, "test_k\n");
break;
case TEST_SE0_NAK:
case USB_TEST_SE0_NAK:
seq_printf(s, "test_se0_nak\n");
break;
case TEST_PACKET:
case USB_TEST_PACKET:
seq_printf(s, "test_packet\n");
break;
case TEST_FORCE_EN:
case USB_TEST_FORCE_ENABLE:
seq_printf(s, "test_force_enable\n");
break;
default:
@ -506,15 +506,15 @@ static ssize_t dwc3_testmode_write(struct file *file,
return -EFAULT;
if (!strncmp(buf, "test_j", 6))
testmode = TEST_J;
testmode = USB_TEST_J;
else if (!strncmp(buf, "test_k", 6))
testmode = TEST_K;
testmode = USB_TEST_K;
else if (!strncmp(buf, "test_se0_nak", 12))
testmode = TEST_SE0_NAK;
testmode = USB_TEST_SE0_NAK;
else if (!strncmp(buf, "test_packet", 11))
testmode = TEST_PACKET;
testmode = USB_TEST_PACKET;
else if (!strncmp(buf, "test_force_enable", 17))
testmode = TEST_FORCE_EN;
testmode = USB_TEST_FORCE_ENABLE;
else
testmode = 0;

4
drivers/usb/dwc3/drd.c
View File

@ -1,8 +1,8 @@
// SPDX-License-Identifier: GPL-2.0
/**
/*
* drd.c - DesignWare USB3 DRD Controller Dual-role support
*
* Copyright (C) 2017 Texas Instruments Incorporated - http://www.ti.com
* Copyright (C) 2017 Texas Instruments Incorporated - https://www.ti.com
*
* Authors: Roger Quadros <rogerq@ti.com>
*/

2
drivers/usb/dwc3/dwc3-haps.c
View File

@ -1,5 +1,5 @@
// SPDX-License-Identifier: GPL-2.0
/**
/*
* dwc3-haps.c - Synopsys HAPS PCI Specific glue layer
*
* Copyright (C) 2018 Synopsys, Inc.

2
drivers/usb/dwc3/dwc3-keystone.c
View File

@ -2,7 +2,7 @@
/**
* dwc3-keystone.c - Keystone Specific Glue layer
*
* Copyright (C) 2010-2013 Texas Instruments Incorporated - http://www.ti.com
* Copyright (C) 2010-2013 Texas Instruments Incorporated - https://www.ti.com
*
* Author: WingMan Kwok <w-kwok2@ti.com>
*/

15
drivers/usb/dwc3/dwc3-meson-g12a.c
View File

@ -737,13 +737,13 @@ static int dwc3_meson_g12a_probe(struct platform_device *pdev)
goto err_disable_clks;
}
ret = reset_control_reset(priv->reset);
ret = reset_control_deassert(priv->reset);
if (ret)
goto err_disable_clks;
goto err_assert_reset;
ret = dwc3_meson_g12a_get_phys(priv);
if (ret)
goto err_disable_clks;
goto err_assert_reset;
ret = priv->drvdata->setup_regmaps(priv, base);
if (ret)
@ -752,7 +752,7 @@ static int dwc3_meson_g12a_probe(struct platform_device *pdev)
if (priv->vbus) {
ret = regulator_enable(priv->vbus);
if (ret)
goto err_disable_clks;
goto err_assert_reset;
}
/* Get dr_mode */
@ -765,13 +765,13 @@ static int dwc3_meson_g12a_probe(struct platform_device *pdev)
ret = priv->drvdata->usb_init(priv);
if (ret)
goto err_disable_clks;
goto err_assert_reset;
/* Init PHYs */
for (i = 0 ; i < PHY_COUNT ; ++i) {
ret = phy_init(priv->phys[i]);
if (ret)
goto err_disable_clks;
goto err_assert_reset;
}
/* Set PHY Power */
@ -809,6 +809,9 @@ err_phys_exit:
for (i = 0 ; i < PHY_COUNT ; ++i)
phy_exit(priv->phys[i]);
err_assert_reset:
reset_control_assert(priv->reset);
err_disable_clks:
clk_bulk_disable_unprepare(priv->drvdata->num_clks,
priv->drvdata->clks);

4
drivers/usb/dwc3/dwc3-of-simple.c
View File

@ -1,8 +1,8 @@
// SPDX-License-Identifier: GPL-2.0
/**
/*
* dwc3-of-simple.c - OF glue layer for simple integrations
*
* Copyright (c) 2015 Texas Instruments Incorporated - http://www.ti.com
* Copyright (c) 2015 Texas Instruments Incorporated - https://www.ti.com
*
* Author: Felipe Balbi <balbi@ti.com>
*

9
drivers/usb/dwc3/dwc3-omap.c
View File

@ -1,8 +1,8 @@
// SPDX-License-Identifier: GPL-2.0
/**
/*
* dwc3-omap.c - OMAP Specific Glue layer
*
* Copyright (C) 2010-2011 Texas Instruments Incorporated - http://www.ti.com
* Copyright (C) 2010-2011 Texas Instruments Incorporated - https://www.ti.com
*
* Authors: Felipe Balbi <balbi@ti.com>,
* Sebastian Andrzej Siewior <bigeasy@linutronix.de>
@ -457,8 +457,6 @@ static int dwc3_omap_probe(struct platform_device *pdev)
int ret;
int irq;
u32 reg;
void __iomem *base;
if (!node) {
@ -503,9 +501,6 @@ static int dwc3_omap_probe(struct platform_device *pdev)
dwc3_omap_map_offset(omap);
dwc3_omap_set_utmi_mode(omap);
/* check the DMA Status */
reg = dwc3_omap_readl(omap->base, USBOTGSS_SYSCONFIG);
ret = dwc3_omap_extcon_register(omap);
if (ret < 0)
goto err1;

2
drivers/usb/dwc3/dwc3-pci.c
View File

@ -2,7 +2,7 @@
/**
* dwc3-pci.c - PCI Specific glue layer
*
* Copyright (C) 2010-2011 Texas Instruments Incorporated - http://www.ti.com
* Copyright (C) 2010-2011 Texas Instruments Incorporated - https://www.ti.com
*
* Authors: Felipe Balbi <balbi@ti.com>,
* Sebastian Andrzej Siewior <bigeasy@linutronix.de>

22
drivers/usb/dwc3/dwc3-qcom.c
View File

@ -540,16 +540,6 @@ static int dwc3_qcom_of_register_core(struct platform_device *pdev)
return 0;
}
static const struct dwc3_acpi_pdata sdm845_acpi_pdata = {
.qscratch_base_offset = SDM845_QSCRATCH_BASE_OFFSET,
.qscratch_base_size = SDM845_QSCRATCH_SIZE,
.dwc3_core_base_size = SDM845_DWC3_CORE_SIZE,
.hs_phy_irq_index = 1,
.dp_hs_phy_irq_index = 4,
.dm_hs_phy_irq_index = 3,
.ss_phy_irq_index = 2
};
static int dwc3_qcom_probe(struct platform_device *pdev)
{
struct device_node *np = pdev->dev.of_node;
@ -758,11 +748,23 @@ static const struct of_device_id dwc3_qcom_of_match[] = {
};
MODULE_DEVICE_TABLE(of, dwc3_qcom_of_match);
#ifdef CONFIG_ACPI
static const struct dwc3_acpi_pdata sdm845_acpi_pdata = {
.qscratch_base_offset = SDM845_QSCRATCH_BASE_OFFSET,
.qscratch_base_size = SDM845_QSCRATCH_SIZE,
.dwc3_core_base_size = SDM845_DWC3_CORE_SIZE,
.hs_phy_irq_index = 1,
.dp_hs_phy_irq_index = 4,
.dm_hs_phy_irq_index = 3,
.ss_phy_irq_index = 2
};
static const struct acpi_device_id dwc3_qcom_acpi_match[] = {
{ "QCOM2430", (unsigned long)&sdm845_acpi_pdata },
{ },
};
MODULE_DEVICE_TABLE(acpi, dwc3_qcom_acpi_match);
#endif
static struct platform_driver dwc3_qcom_driver = {
.probe = dwc3_qcom_probe,

4
drivers/usb/dwc3/dwc3-st.c
View File

@ -206,8 +206,8 @@ static int st_dwc3_probe(struct platform_device *pdev)
if (!dwc3_data)
return -ENOMEM;
res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "reg-glue");
dwc3_data->glue_base = devm_ioremap_resource(dev, res);
dwc3_data->glue_base =
devm_platform_ioremap_resource_byname(pdev, "reg-glue");
if (IS_ERR(dwc3_data->glue_base))
return PTR_ERR(dwc3_data->glue_base);

12
drivers/usb/dwc3/ep0.c
View File

@ -2,7 +2,7 @@
/*
* ep0.c - DesignWare USB3 DRD Controller Endpoint 0 Handling
*
* Copyright (C) 2010-2011 Texas Instruments Incorporated - http://www.ti.com
* Copyright (C) 2010-2011 Texas Instruments Incorporated - https://www.ti.com
*
* Authors: Felipe Balbi <balbi@ti.com>,
* Sebastian Andrzej Siewior <bigeasy@linutronix.de>
@ -425,11 +425,11 @@ static int dwc3_ep0_handle_test(struct dwc3 *dwc, enum usb_device_state state,
return -EINVAL;
switch (wIndex >> 8) {
case TEST_J:
case TEST_K:
case TEST_SE0_NAK:
case TEST_PACKET:
case TEST_FORCE_EN:
case USB_TEST_J:
case USB_TEST_K:
case USB_TEST_SE0_NAK:
case USB_TEST_PACKET:
case USB_TEST_FORCE_ENABLE:
dwc->test_mode_nr = wIndex >> 8;
dwc->test_mode = true;
break;

42
drivers/usb/dwc3/gadget.c
View File

@ -2,7 +2,7 @@
/*
* gadget.c - DesignWare USB3 DRD Controller Gadget Framework Link
*
* Copyright (C) 2010-2011 Texas Instruments Incorporated - http://www.ti.com
* Copyright (C) 2010-2011 Texas Instruments Incorporated - https://www.ti.com
*
* Authors: Felipe Balbi <balbi@ti.com>,
* Sebastian Andrzej Siewior <bigeasy@linutronix.de>
@ -46,11 +46,11 @@ int dwc3_gadget_set_test_mode(struct dwc3 *dwc, int mode)
reg &= ~DWC3_DCTL_TSTCTRL_MASK;
switch (mode) {
case TEST_J:
case TEST_K:
case TEST_SE0_NAK:
case TEST_PACKET:
case TEST_FORCE_EN:
case USB_TEST_J:
case USB_TEST_K:
case USB_TEST_SE0_NAK:
case USB_TEST_PACKET:
case USB_TEST_FORCE_ENABLE:
reg |= mode << 1;
break;
default:
@ -1403,7 +1403,7 @@ static int dwc3_gadget_start_isoc_quirk(struct dwc3_ep *dep)
* Check if we can start isoc transfer on the next interval or
* 4 uframes in the future with BIT[15:14] as dep->combo_num
*/
test_frame_number = dep->frame_number & 0x3fff;
test_frame_number = dep->frame_number & DWC3_FRNUMBER_MASK;
test_frame_number |= dep->combo_num << 14;
test_frame_number += max_t(u32, 4, dep->interval);
@ -1450,7 +1450,7 @@ static int dwc3_gadget_start_isoc_quirk(struct dwc3_ep *dep)
else if (test0 && test1)
dep->combo_num = 0;
dep->frame_number &= 0x3fff;
dep->frame_number &= DWC3_FRNUMBER_MASK;
dep->frame_number |= dep->combo_num << 14;
dep->frame_number += max_t(u32, 4, dep->interval);
@ -1463,6 +1463,7 @@ static int dwc3_gadget_start_isoc_quirk(struct dwc3_ep *dep)
static int __dwc3_gadget_start_isoc(struct dwc3_ep *dep)
{
const struct usb_endpoint_descriptor *desc = dep->endpoint.desc;
struct dwc3 *dwc = dep->dwc;
int ret;
int i;
@ -1480,6 +1481,27 @@ static int __dwc3_gadget_start_isoc(struct dwc3_ep *dep)
return dwc3_gadget_start_isoc_quirk(dep);
}
if (desc->bInterval <= 14 &&
dwc->gadget.speed >= USB_SPEED_HIGH) {
u32 frame = __dwc3_gadget_get_frame(dwc);
bool rollover = frame <
(dep->frame_number & DWC3_FRNUMBER_MASK);
/*
* frame_number is set from XferNotReady and may be already
* out of date. DSTS only provides the lower 14 bit of the
* current frame number. So add the upper two bits of
* frame_number and handle a possible rollover.
* This will provide the correct frame_number unless more than
* rollover has happened since XferNotReady.
*/
dep->frame_number = (dep->frame_number & ~DWC3_FRNUMBER_MASK) |
frame;
if (rollover)
dep->frame_number += BIT(14);
}
for (i = 0; i < DWC3_ISOC_MAX_RETRIES; i++) {
dep->frame_number = DWC3_ALIGN_FRAME(dep, i + 1);
@ -2716,7 +2738,9 @@ static bool dwc3_gadget_endpoint_trbs_complete(struct dwc3_ep *dep,
if (dep->flags & DWC3_EP_END_TRANSFER_PENDING)
goto out;
if (status == -EXDEV && list_empty(&dep->started_list))
if (usb_endpoint_xfer_isoc(dep->endpoint.desc) &&
list_empty(&dep->started_list) &&
(list_empty(&dep->pending_list) || status == -EXDEV))
dwc3_stop_active_transfer(dep, true, true);
else if (dwc3_gadget_ep_should_continue(dep))
if (__dwc3_gadget_kick_transfer(dep) == 0)

4
drivers/usb/dwc3/gadget.h
View File

@ -2,7 +2,7 @@
/*
* gadget.h - DesignWare USB3 DRD Gadget Header
*
* Copyright (C) 2010-2011 Texas Instruments Incorporated - http://www.ti.com
* Copyright (C) 2010-2011 Texas Instruments Incorporated - https://www.ti.com
*
* Authors: Felipe Balbi <balbi@ti.com>,
* Sebastian Andrzej Siewior <bigeasy@linutronix.de>
@ -54,6 +54,8 @@ struct dwc3;
/* U2 Device exit Latency */
#define DWC3_DEFAULT_U2_DEV_EXIT_LAT 0x1FF /* Less then 511 microsec */
/* Frame/Microframe Number Mask */
#define DWC3_FRNUMBER_MASK 0x3fff
/* -------------------------------------------------------------------------- */
#define to_dwc3_request(r) (container_of(r, struct dwc3_request, request))

2
drivers/usb/dwc3/host.c
View File

@ -2,7 +2,7 @@
/*
* host.c - DesignWare USB3 DRD Controller Host Glue
*
* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com
* Copyright (C) 2011 Texas Instruments Incorporated - https://www.ti.com
*
* Authors: Felipe Balbi <balbi@ti.com>,
*/

2
drivers/usb/dwc3/io.h
View File

@ -2,7 +2,7 @@
/**
* io.h - DesignWare USB3 DRD IO Header
*
* Copyright (C) 2010-2011 Texas Instruments Incorporated - http://www.ti.com
* Copyright (C) 2010-2011 Texas Instruments Incorporated - https://www.ti.com
*
* Authors: Felipe Balbi <balbi@ti.com>,
* Sebastian Andrzej Siewior <bigeasy@linutronix.de>

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