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Linus Walleij d3c68e0a7e PCI: faraday: Add Faraday Technology FTPCI100 PCI Host Bridge driver
Add a host bridge driver for the Faraday Technology FPPCI100 host bridge,
used for Cortina Systems Gemini SoC (SL3516) PCI Host Bridge.

This code is inspired by the out-of-tree OpenWRT patch and then extensively
rewritten for device tree and using the modern helpers to cut down and
modernize the code to all new PCI frameworks.  A driver exists in U-Boot as
well.

Tested on the ITian Square One SQ201 NAS with the following result in the
boot log (trimmed to relevant parts):

  OF: PCI: host bridge /soc/pci@50000000 ranges:
  OF: PCI:    IO 0x50000000..0x500fffff -> 0x00000000
  OF: PCI:   MEM 0x58000000..0x5fffffff -> 0x58000000
  ftpci100 50000000.pci: PCI host bridge to bus 0000:00
  pci_bus 0000:00: root bus resource [bus 00-ff]
  pci_bus 0000:00: root bus resource [io  0x0000-0xfffff]
  pci_bus 0000:00: root bus resource [mem 0x58000000-0x5fffffff]
  ftpci100 50000000.pci:
    DMA MEM1 BASE: 0x0000000000000000 -> 0x0000000007ffffff config 00070000
  ftpci100 50000000.pci:
    DMA MEM2 BASE: 0x0000000000000000 -> 0x0000000003ffffff config 00060000
  ftpci100 50000000.pci:
    DMA MEM3 BASE: 0x0000000000000000 -> 0x0000000003ffffff config 00060000
  PCI: bus0: Fast back to back transfers disabled
  pci 0000:00:00.0: of_irq_parse_pci() failed with rc=-22
  pci 0000:00:0c.0: BAR 0: assigned [mem 0x58000000-0x58007fff]
  pci 0000:00:09.2: BAR 0: assigned [mem 0x58008000-0x580080ff]
  pci 0000:00:09.0: BAR 4: assigned [io  0x1000-0x101f]
  pci 0000:00:09.1: BAR 4: assigned [io  0x1020-0x103f]
  pci 0000:00:09.0: enabling device (0140 -> 0141)
  pci 0000:00:09.0: HCRESET not completed yet!
  pci 0000:00:09.1: enabling device (0140 -> 0141)
  pci 0000:00:09.1: HCRESET not completed yet!
  pci 0000:00:09.2: enabling device (0140 -> 0142)
  rt61pci 0000:00:0c.0: enabling device (0140 -> 0142)
  ieee80211 phy0: rt2x00_set_chip: Info - Chipset detected -
     rt: 2561, rf: 0003, rev: 000c
  ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
  ehci-pci: EHCI PCI platform driver
  ehci-pci 0000:00:09.2: EHCI Host Controller
  ehci-pci 0000:00:09.2: new USB bus registered, assigned bus number 1
  ehci-pci 0000:00:09.2: irq 125, io mem 0x58008000
  ehci-pci 0000:00:09.2: USB 2.0 started, EHCI 1.00
  hub 1-0:1.0: USB hub found
  hub 1-0:1.0: 4 ports detected
  uhci_hcd: USB Universal Host Controller Interface driver
  uhci_hcd 0000:00:09.0: UHCI Host Controller
  uhci_hcd 0000:00:09.0: new USB bus registered, assigned bus number 2
  uhci_hcd 0000:00:09.0: HCRESET not completed yet!
  uhci_hcd 0000:00:09.0: irq 123, io base 0x00001000
  hub 2-0:1.0: USB hub found
  hub 2-0:1.0: config failed, hub doesn't have any ports! (err -19)
  uhci_hcd 0000:00:09.1: UHCI Host Controller
  uhci_hcd 0000:00:09.1: new USB bus registered, assigned bus number 3
  uhci_hcd 0000:00:09.1: HCRESET not completed yet!
  uhci_hcd 0000:00:09.1: irq 124, io base 0x00001020
  hub 3-0:1.0: USB hub found
  hub 3-0:1.0: config failed, hub doesn't have any ports! (err -19)
  scsi 0:0:0:0: Direct-Access     USB      Flash Disk       1.00 PQ: 0 ANSI: 2
  sd 0:0:0:0: [sda] 7900336 512-byte logical blocks: (4.04 GB/3.77 GiB)
  sd 0:0:0:0: [sda] Write Protect is off
  sd 0:0:0:0: [sda] No Caching mode page found
  sd 0:0:0:0: [sda] Assuming drive cache: write through
   sda: sda1 sda2 sda3
  sd 0:0:0:0: [sda] Attached SCSI removable disk
  ieee80211 phy0: rt2x00lib_request_firmware: Info -
     Loading firmware file 'rt2561s.bin'
  ieee80211 phy0: rt2x00lib_request_firmware: Info -
     Firmware detected - version: 0.8
  IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready

  $ lspci
  00:00.0 Class 0600: 159b:4321
  00:09.2 Class 0c03: 1106:3104
  00:09.0 Class 0c03: 1106:3038
  00:09.1 Class 0c03: 1106:3038
  00:0c.0 Class 0280: 1814:0301

  $ cat /proc/interrupts
	     CPU0
  123:          0       PCI   0 Edge      uhci_hcd:usb2
  124:          0       PCI   1 Edge      uhci_hcd:usb3
  125:        159       PCI   2 Edge      ehci_hcd:usb1
  126:       1082       PCI   3 Edge      rt61pci

  $ cat /proc/iomem
  50000000-500000ff : /soc/pci@50000000
  58000000-5fffffff : Gemini PCI MEM
    58000000-58007fff : 0000:00:0c.0
      58000000-58007fff : 0000:00:0c.0
    58008000-580080ff : 0000:00:09.2
      58008000-580080ff : ehci_hcd

The EHCI USB hub works fine; I can mount and manage files and the IRQs just
keep ticking up.  I can issue iwlist wlan0 scanning and see all the WLANs
here.  I don't have wpa_supplicant so have not tried connecting to them.

[bhelgaas: fold in %pap change from Arnd Bergmann <arnd@arndb.de>]
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
CC: Janos Laube <janos.dev@gmail.com>
CC: Paulius Zaleckas <paulius.zaleckas@gmail.com>
CC: Hans Ulli Kroll <ulli.kroll@googlemail.com>
CC: Florian Fainelli <f.fainelli@gmail.com>
CC: Feng-Hsin Chiang <john453@faraday-tech.com>
CC: Greentime Hu <green.hu@gmail.com>
2017-03-24 10:31:17 -05:00
arch Second batch of KVM changes for 4.11 merge window 2017-03-04 11:36:19 -08:00
block Merge branch 'for-linus' of git://git.kernel.dk/linux-block 2017-03-03 10:53:35 -08:00
certs certs: Add a secondary system keyring that can be added to dynamically 2016-04-11 22:48:09 +01:00
crypto Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 2017-03-04 10:42:53 -08:00
Documentation PCI: Add DT bindings for Faraday Technology PCI Host Bridge 2017-03-24 10:30:29 -05:00
drivers PCI: faraday: Add Faraday Technology FTPCI100 PCI Host Bridge driver 2017-03-24 10:31:17 -05:00
firmware WHENCE: use https://linuxtv.org for LinuxTV URLs 2015-12-04 10:35:11 -02:00
fs Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2017-03-03 21:44:35 -08:00
include Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-03-04 17:31:39 -08:00
init sched/headers: Prepare to move _init() prototypes from <linux/sched.h> to <linux/sched/init.h> 2017-03-02 08:42:40 +01:00
ipc Merge branch 'WIP.sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2017-03-03 10:16:38 -08:00
kernel Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-03-04 17:31:39 -08:00
lib Merge branch 'WIP.sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2017-03-03 10:16:38 -08:00
mm Merge branch 'rebased-statx' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2017-03-03 11:38:56 -08:00
net Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-03-04 17:31:39 -08:00
samples Merge branch 'rebased-statx' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2017-03-03 11:38:56 -08:00
scripts objtool, modules: Discard objtool annotation sections for modules 2017-03-01 20:32:25 +01:00
security Merge branch 'WIP.sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2017-03-03 10:16:38 -08:00
sound sched/headers: Prepare to move signal wakeup & sigpending methods from <linux/sched.h> into <linux/sched/signal.h> 2017-03-02 08:42:32 +01:00
tools Second batch of KVM changes for 4.11 merge window 2017-03-04 11:36:19 -08:00
usr kbuild: initramfs cleanup, set target from Kconfig 2017-01-05 09:40:16 -08:00
virt Second batch of KVM changes for 4.11 merge window 2017-03-04 11:36:19 -08:00
.cocciconfig scripts: add Linux .cocciconfig for coccinelle 2016-07-22 12:13:39 +02:00
.get_maintainer.ignore
.gitattributes .gitattributes: set git diff driver for C source code files 2016-10-07 18:46:30 -07:00
.gitignore Merge branch 'misc' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild 2016-08-02 16:48:52 -04:00
.mailmap mailmap: add codeaurora.org names for nameless email commits 2017-01-10 18:31:55 -08:00
COPYING
CREDITS MAINTAINERS: Remove old e-mail address 2017-02-13 12:24:56 -05:00
Kbuild scripts/gdb: provide linux constants 2016-05-23 17:04:14 -07:00
Kconfig
MAINTAINERS Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-03-04 17:31:39 -08:00
Makefile Linux 4.11-rc1 2017-03-05 12:59:56 -08:00
README README: add a new README file, pointing to the Documentation/ 2016-10-24 08:12:35 -02:00

Linux kernel
============

This file was moved to Documentation/admin-guide/README.rst

Please notice that there are several guides for kernel developers and users.
These guides can be rendered in a number of formats, like HTML and PDF.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
See Documentation/00-INDEX for a list of what is contained in each file.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.