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[POWERPC] celleb: Add support for PCI Express

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This adds support for PCI Express port on Celleb.  I/O space of this
PCI Express port is not mapped in memory space.  So we use the
io-workaround mechanism to make accesses indirect.

Signed-off-by: Kou Ishizaki <kou.ishizaki@toshiba.co.jp>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Paul Mackerras <paulus@samba.org>
This commit is contained in:
Ishizaki Kou 2008-04-24 20:27:39 +10:00 committed by Paul Mackerras
parent ad2c698797
commit 884d04cd8d
5 changed files with 639 additions and 0 deletions
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1
arch/powerpc/platforms/cell/Makefile
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@ -33,6 +33,7 @@ obj-$(CONFIG_PCI_MSI) += axon_msi.o
ifeq ($(CONFIG_PPC_CELLEB),y)
obj-y += celleb_setup.o \
celleb_pci.o celleb_scc_epci.o \
celleb_scc_pciex.o \
celleb_scc_uhc.o \
io-workarounds.o spider-pci.o \
beat.o beat_htab.o beat_hvCall.o \

3
arch/powerpc/platforms/cell/celleb_pci.c
View File

@ -467,6 +467,9 @@ static struct of_device_id celleb_phb_match[] __initdata = {
}, {
.name = "epci",
.data = &celleb_epci_spec,
}, {
.name = "pcie",
.data = &celleb_pciex_spec,
}, {
},
};

1
arch/powerpc/platforms/cell/celleb_pci.h
View File

@ -40,5 +40,6 @@ extern int celleb_setup_phb(struct pci_controller *);
extern int celleb_pci_probe_mode(struct pci_bus *);
extern struct celleb_phb_spec celleb_epci_spec;
extern struct celleb_phb_spec celleb_pciex_spec;
#endif /* _CELLEB_PCI_H */

87
arch/powerpc/platforms/cell/celleb_scc.h
View File

@ -125,6 +125,93 @@
/* bits for SCC_EPCI_CNTOPT */
#define SCC_EPCI_CNTOPT_O2PMB 0x00000002
/* SCC PCIEXC SMMIO registers */
#define PEXCADRS 0x000
#define PEXCWDATA 0x004
#define PEXCRDATA 0x008
#define PEXDADRS 0x010
#define PEXDCMND 0x014
#define PEXDWDATA 0x018
#define PEXDRDATA 0x01c
#define PEXREQID 0x020
#define PEXTIDMAP 0x024
#define PEXINTMASK 0x028
#define PEXINTSTS 0x02c
#define PEXAERRMASK 0x030
#define PEXAERRSTS 0x034
#define PEXPRERRMASK 0x040
#define PEXPRERRSTS 0x044
#define PEXPRERRID01 0x048
#define PEXPRERRID23 0x04c
#define PEXVDMASK 0x050
#define PEXVDSTS 0x054
#define PEXRCVCPLIDA 0x060
#define PEXLENERRIDA 0x068
#define PEXPHYPLLST 0x070
#define PEXDMRDEN0 0x100
#define PEXDMRDADR0 0x104
#define PEXDMRDENX 0x110
#define PEXDMRDADRX 0x114
#define PEXECMODE 0xf00
#define PEXMAEA(n) (0xf50 + (8 * n))
#define PEXMAEC(n) (0xf54 + (8 * n))
#define PEXCCRCTRL 0xff0
/* SCC PCIEXC bits and shifts for PEXCADRS */
#define PEXCADRS_BYTE_EN_SHIFT 20
#define PEXCADRS_CMD_SHIFT 16
#define PEXCADRS_CMD_READ (0xa << PEXCADRS_CMD_SHIFT)
#define PEXCADRS_CMD_WRITE (0xb << PEXCADRS_CMD_SHIFT)
/* SCC PCIEXC shifts for PEXDADRS */
#define PEXDADRS_BUSNO_SHIFT 20
#define PEXDADRS_DEVNO_SHIFT 15
#define PEXDADRS_FUNCNO_SHIFT 12
/* SCC PCIEXC bits and shifts for PEXDCMND */
#define PEXDCMND_BYTE_EN_SHIFT 4
#define PEXDCMND_IO_READ 0x2
#define PEXDCMND_IO_WRITE 0x3
#define PEXDCMND_CONFIG_READ 0xa
#define PEXDCMND_CONFIG_WRITE 0xb
/* SCC PCIEXC bits for PEXPHYPLLST */
#define PEXPHYPLLST_PEXPHYAPLLST 0x00000001
/* SCC PCIEXC bits for PEXECMODE */
#define PEXECMODE_ALL_THROUGH 0x00000000
#define PEXECMODE_ALL_8BIT 0x00550155
#define PEXECMODE_ALL_16BIT 0x00aa02aa
/* SCC PCIEXC bits for PEXCCRCTRL */
#define PEXCCRCTRL_PEXIPCOREEN 0x00040000
#define PEXCCRCTRL_PEXIPCONTEN 0x00020000
#define PEXCCRCTRL_PEXPHYPLLEN 0x00010000
#define PEXCCRCTRL_PCIEXCAOCKEN 0x00000100
/* SCC PCIEXC port configuration registers */
#define PEXTCERRCHK 0x21c
#define PEXTAMAPB0 0x220
#define PEXTAMAPL0 0x224
#define PEXTAMAPB(n) (PEXTAMAPB0 + 8 * (n))
#define PEXTAMAPL(n) (PEXTAMAPL0 + 8 * (n))
#define PEXCHVC0P 0x500
#define PEXCHVC0NP 0x504
#define PEXCHVC0C 0x508
#define PEXCDVC0P 0x50c
#define PEXCDVC0NP 0x510
#define PEXCDVC0C 0x514
#define PEXCHVCXP 0x518
#define PEXCHVCXNP 0x51c
#define PEXCHVCXC 0x520
#define PEXCDVCXP 0x524
#define PEXCDVCXNP 0x528
#define PEXCDVCXC 0x52c
#define PEXCTTRG 0x530
#define PEXTSCTRL 0x700
#define PEXTSSTS 0x704
#define PEXSKPCTRL 0x708
/* UHC registers */
#define SCC_UHC_CKRCTRL 0xff0
#define SCC_UHC_ECMODE 0xf00

547
arch/powerpc/platforms/cell/celleb_scc_pciex.c Normal file
View File

@ -0,0 +1,547 @@
/*
* Support for Celleb PCI-Express.
*
* (C) Copyright 2007-2008 TOSHIBA CORPORATION
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#undef DEBUG
#include <linux/kernel.h>
#include <linux/pci.h>
#include <linux/string.h>
#include <linux/init.h>
#include <linux/bootmem.h>
#include <linux/delay.h>
#include <linux/interrupt.h>
#include <asm/io.h>
#include <asm/irq.h>
#include <asm/iommu.h>
#include <asm/byteorder.h>
#include "celleb_scc.h"
#include "celleb_pci.h"
#define PEX_IN(base, off) in_be32((void *)(base) + (off))
#define PEX_OUT(base, off, data) out_be32((void *)(base) + (off), (data))
static void scc_pciex_io_flush(struct iowa_bus *bus)
{
(void)PEX_IN(bus->phb->cfg_addr, PEXDMRDEN0);
}
/*
* Memory space access to device on PCIEX
*/
#define PCIEX_MMIO_READ(name, ret) \
static ret scc_pciex_##name(const PCI_IO_ADDR addr) \
{ \
ret val = __do_##name(addr); \
scc_pciex_io_flush(iowa_mem_find_bus(addr)); \
return val; \
}
#define PCIEX_MMIO_READ_STR(name) \
static void scc_pciex_##name(const PCI_IO_ADDR addr, void *buf, \
unsigned long count) \
{ \
__do_##name(addr, buf, count); \
scc_pciex_io_flush(iowa_mem_find_bus(addr)); \
}
PCIEX_MMIO_READ(readb, u8)
PCIEX_MMIO_READ(readw, u16)
PCIEX_MMIO_READ(readl, u32)
PCIEX_MMIO_READ(readq, u64)
PCIEX_MMIO_READ(readw_be, u16)
PCIEX_MMIO_READ(readl_be, u32)
PCIEX_MMIO_READ(readq_be, u64)
PCIEX_MMIO_READ_STR(readsb)
PCIEX_MMIO_READ_STR(readsw)
PCIEX_MMIO_READ_STR(readsl)
static void scc_pciex_memcpy_fromio(void *dest, const PCI_IO_ADDR src,
unsigned long n)
{
__do_memcpy_fromio(dest, src, n);
scc_pciex_io_flush(iowa_mem_find_bus(src));
}
/*
* I/O port access to devices on PCIEX.
*/
static inline unsigned long get_bus_address(struct pci_controller *phb,
unsigned long port)
{
return port - ((unsigned long)(phb->io_base_virt) - _IO_BASE);
}
static u32 scc_pciex_read_port(struct pci_controller *phb,
unsigned long port, int size)
{
unsigned int byte_enable;
unsigned int cmd, shift;
unsigned long addr;
u32 data, ret;
BUG_ON(((port & 0x3ul) + size) > 4);
addr = get_bus_address(phb, port);
shift = addr & 0x3ul;
byte_enable = ((1 << size) - 1) << shift;
cmd = PEXDCMND_IO_READ | (byte_enable << PEXDCMND_BYTE_EN_SHIFT);
PEX_OUT(phb->cfg_addr, PEXDADRS, (addr & ~0x3ul));
PEX_OUT(phb->cfg_addr, PEXDCMND, cmd);
data = PEX_IN(phb->cfg_addr, PEXDRDATA);
ret = (data >> (shift * 8)) & (0xFFFFFFFF >> ((4 - size) * 8));
pr_debug("PCIEX:PIO READ:port=0x%lx, addr=0x%lx, size=%d, be=%x,"
" cmd=%x, data=%x, ret=%x\n", port, addr, size, byte_enable,
cmd, data, ret);
return ret;
}
static void scc_pciex_write_port(struct pci_controller *phb,
unsigned long port, int size, u32 val)
{
unsigned int byte_enable;
unsigned int cmd, shift;
unsigned long addr;
u32 data;
BUG_ON(((port & 0x3ul) + size) > 4);
addr = get_bus_address(phb, port);
shift = addr & 0x3ul;
byte_enable = ((1 << size) - 1) << shift;
cmd = PEXDCMND_IO_WRITE | (byte_enable << PEXDCMND_BYTE_EN_SHIFT);
data = (val & (0xFFFFFFFF >> (4 - size) * 8)) << (shift * 8);
PEX_OUT(phb->cfg_addr, PEXDADRS, (addr & ~0x3ul));
PEX_OUT(phb->cfg_addr, PEXDCMND, cmd);
PEX_OUT(phb->cfg_addr, PEXDWDATA, data);
pr_debug("PCIEX:PIO WRITE:port=0x%lx, addr=%lx, size=%d, val=%x,"
" be=%x, cmd=%x, data=%x\n", port, addr, size, val,
byte_enable, cmd, data);
}
static u8 __scc_pciex_inb(struct pci_controller *phb, unsigned long port)
{
return (u8)scc_pciex_read_port(phb, port, 1);
}
static u16 __scc_pciex_inw(struct pci_controller *phb, unsigned long port)
{
u32 data;
if ((port & 0x3ul) < 3)
data = scc_pciex_read_port(phb, port, 2);
else {
u32 d1 = scc_pciex_read_port(phb, port, 1);
u32 d2 = scc_pciex_read_port(phb, port + 1, 1);
data = d1 | (d2 << 8);
}
return (u16)data;
}
static u32 __scc_pciex_inl(struct pci_controller *phb, unsigned long port)
{
unsigned int mod = port & 0x3ul;
u32 data;
if (mod == 0)
data = scc_pciex_read_port(phb, port, 4);
else {
u32 d1 = scc_pciex_read_port(phb, port, 4 - mod);
u32 d2 = scc_pciex_read_port(phb, port + 1, mod);
data = d1 | (d2 << (mod * 8));
}
return data;
}
static void __scc_pciex_outb(struct pci_controller *phb,
u8 val, unsigned long port)
{
scc_pciex_write_port(phb, port, 1, (u32)val);
}
static void __scc_pciex_outw(struct pci_controller *phb,
u16 val, unsigned long port)
{
if ((port & 0x3ul) < 3)
scc_pciex_write_port(phb, port, 2, (u32)val);
else {
u32 d1 = val & 0x000000FF;
u32 d2 = (val & 0x0000FF00) >> 8;
scc_pciex_write_port(phb, port, 1, d1);
scc_pciex_write_port(phb, port + 1, 1, d2);
}
}
static void __scc_pciex_outl(struct pci_controller *phb,
u32 val, unsigned long port)
{
unsigned int mod = port & 0x3ul;
if (mod == 0)
scc_pciex_write_port(phb, port, 4, val);
else {
u32 d1 = val & (0xFFFFFFFFul >> (mod * 8));
u32 d2 = val >> ((4 - mod) * 8);
scc_pciex_write_port(phb, port, 4 - mod, d1);
scc_pciex_write_port(phb, port + 1, mod, d2);
}
}
#define PCIEX_PIO_FUNC(size, name) \
static u##size scc_pciex_in##name(unsigned long port) \
{ \
struct iowa_bus *bus = iowa_pio_find_bus(port); \
u##size data = __scc_pciex_in##name(bus->phb, port); \
scc_pciex_io_flush(bus); \
return data; \
} \
static void scc_pciex_ins##name(unsigned long p, void *b, unsigned long c) \
{ \
struct iowa_bus *bus = iowa_pio_find_bus(p); \
u##size *dst = b; \
for (; c != 0; c--, dst++) \
*dst = cpu_to_le##size(__scc_pciex_in##name(bus->phb, p)); \
scc_pciex_io_flush(bus); \
} \
static void scc_pciex_out##name(u##size val, unsigned long port) \
{ \
struct iowa_bus *bus = iowa_pio_find_bus(port); \
__scc_pciex_out##name(bus->phb, val, port); \
} \
static void scc_pciex_outs##name(unsigned long p, const void *b, \
unsigned long c) \
{ \
struct iowa_bus *bus = iowa_pio_find_bus(p); \
const u##size *src = b; \
for (; c != 0; c--, src++) \
__scc_pciex_out##name(bus->phb, le##size##_to_cpu(*src), p); \
}
#define cpu_to_le8(x) (x)
#define le8_to_cpu(x) (x)
PCIEX_PIO_FUNC(8, b)
PCIEX_PIO_FUNC(16, w)
PCIEX_PIO_FUNC(32, l)
static struct ppc_pci_io scc_pciex_ops = {
.readb = scc_pciex_readb,
.readw = scc_pciex_readw,
.readl = scc_pciex_readl,
.readq = scc_pciex_readq,
.readw_be = scc_pciex_readw_be,
.readl_be = scc_pciex_readl_be,
.readq_be = scc_pciex_readq_be,
.readsb = scc_pciex_readsb,
.readsw = scc_pciex_readsw,
.readsl = scc_pciex_readsl,
.memcpy_fromio = scc_pciex_memcpy_fromio,
.inb = scc_pciex_inb,
.inw = scc_pciex_inw,
.inl = scc_pciex_inl,
.outb = scc_pciex_outb,
.outw = scc_pciex_outw,
.outl = scc_pciex_outl,
.insb = scc_pciex_insb,
.insw = scc_pciex_insw,
.insl = scc_pciex_insl,
.outsb = scc_pciex_outsb,
.outsw = scc_pciex_outsw,
.outsl = scc_pciex_outsl,
};
static int __init scc_pciex_iowa_init(struct iowa_bus *bus, void *data)
{
dma_addr_t dummy_page_da;
void *dummy_page_va;
dummy_page_va = kmalloc(PAGE_SIZE, GFP_KERNEL);
if (!dummy_page_va) {
pr_err("PCIEX:Alloc dummy_page_va failed\n");
return -1;
}
dummy_page_da = dma_map_single(bus->phb->parent, dummy_page_va,
PAGE_SIZE, DMA_FROM_DEVICE);
if (dma_mapping_error(dummy_page_da)) {
pr_err("PCIEX:Map dummy page failed.\n");
kfree(dummy_page_va);
return -1;
}
PEX_OUT(bus->phb->cfg_addr, PEXDMRDADR0, dummy_page_da);
return 0;
}
/*
* config space access
*/
#define MK_PEXDADRS(bus_no, dev_no, func_no, addr) \
((uint32_t)(((addr) & ~0x3UL) | \
((bus_no) << PEXDADRS_BUSNO_SHIFT) | \
((dev_no) << PEXDADRS_DEVNO_SHIFT) | \
((func_no) << PEXDADRS_FUNCNO_SHIFT)))
#define MK_PEXDCMND_BYTE_EN(addr, size) \
((((0x1 << (size))-1) << ((addr) & 0x3)) << PEXDCMND_BYTE_EN_SHIFT)
#define MK_PEXDCMND(cmd, addr, size) ((cmd) | MK_PEXDCMND_BYTE_EN(addr, size))
static uint32_t config_read_pciex_dev(unsigned int *base,
uint64_t bus_no, uint64_t dev_no, uint64_t func_no,
uint64_t off, uint64_t size)
{
uint32_t ret;
uint32_t addr, cmd;
addr = MK_PEXDADRS(bus_no, dev_no, func_no, off);
cmd = MK_PEXDCMND(PEXDCMND_CONFIG_READ, off, size);
PEX_OUT(base, PEXDADRS, addr);
PEX_OUT(base, PEXDCMND, cmd);
ret = (PEX_IN(base, PEXDRDATA)
>> ((off & (4-size)) * 8)) & ((0x1 << (size * 8)) - 1);
return ret;
}
static void config_write_pciex_dev(unsigned int *base, uint64_t bus_no,
uint64_t dev_no, uint64_t func_no, uint64_t off, uint64_t size,
uint32_t data)
{
uint32_t addr, cmd;
addr = MK_PEXDADRS(bus_no, dev_no, func_no, off);
cmd = MK_PEXDCMND(PEXDCMND_CONFIG_WRITE, off, size);
PEX_OUT(base, PEXDADRS, addr);
PEX_OUT(base, PEXDCMND, cmd);
PEX_OUT(base, PEXDWDATA,
(data & ((0x1 << (size * 8)) - 1)) << ((off & (4-size)) * 8));
}
#define MK_PEXCADRS_BYTE_EN(off, len) \
((((0x1 << (len)) - 1) << ((off) & 0x3)) << PEXCADRS_BYTE_EN_SHIFT)
#define MK_PEXCADRS(cmd, addr, size) \
((cmd) | MK_PEXCADRS_BYTE_EN(addr, size) | ((addr) & ~0x3))
static uint32_t config_read_pciex_rc(unsigned int *base,
uint32_t where, uint32_t size)
{
PEX_OUT(base, PEXCADRS, MK_PEXCADRS(PEXCADRS_CMD_READ, where, size));
return (PEX_IN(base, PEXCRDATA)
>> ((where & (4 - size)) * 8)) & ((0x1 << (size * 8)) - 1);
}
static void config_write_pciex_rc(unsigned int *base, uint32_t where,
uint32_t size, uint32_t val)
{
uint32_t data;
data = (val & ((0x1 << (size * 8)) - 1)) << ((where & (4 - size)) * 8);
PEX_OUT(base, PEXCADRS, MK_PEXCADRS(PEXCADRS_CMD_WRITE, where, size));
PEX_OUT(base, PEXCWDATA, data);
}
/* Interfaces */
/* Note: Work-around
* On SCC PCIEXC, one device is seen on all 32 dev_no.
* As SCC PCIEXC can have only one device on the bus, we look only one dev_no.
* (dev_no = 1)
*/
static int scc_pciex_read_config(struct pci_bus *bus, unsigned int devfn,
int where, int size, unsigned int *val)
{
struct device_node *dn;
struct pci_controller *phb;
dn = bus->sysdata;
phb = pci_find_hose_for_OF_device(dn);
if (bus->number == phb->first_busno && PCI_SLOT(devfn) != 1) {
*val = ~0;
return PCIBIOS_DEVICE_NOT_FOUND;
}
if (bus->number == 0 && PCI_SLOT(devfn) == 0)
*val = config_read_pciex_rc(phb->cfg_addr, where, size);
else
*val = config_read_pciex_dev(phb->cfg_addr, bus->number,
PCI_SLOT(devfn), PCI_FUNC(devfn), where, size);
return PCIBIOS_SUCCESSFUL;
}
static int scc_pciex_write_config(struct pci_bus *bus, unsigned int devfn,
int where, int size, unsigned int val)
{
struct device_node *dn;
struct pci_controller *phb;
dn = bus->sysdata;
phb = pci_find_hose_for_OF_device(dn);
if (bus->number == phb->first_busno && PCI_SLOT(devfn) != 1)
return PCIBIOS_DEVICE_NOT_FOUND;
if (bus->number == 0 && PCI_SLOT(devfn) == 0)
config_write_pciex_rc(phb->cfg_addr, where, size, val);
else
config_write_pciex_dev(phb->cfg_addr, bus->number,
PCI_SLOT(devfn), PCI_FUNC(devfn), where, size, val);
return PCIBIOS_SUCCESSFUL;
}
static struct pci_ops scc_pciex_pci_ops = {
scc_pciex_read_config,
scc_pciex_write_config,
};
static void pciex_clear_intr_all(unsigned int *base)
{
PEX_OUT(base, PEXAERRSTS, 0xffffffff);
PEX_OUT(base, PEXPRERRSTS, 0xffffffff);
PEX_OUT(base, PEXINTSTS, 0xffffffff);
}
#if 0
static void pciex_disable_intr_all(unsigned int *base)
{
PEX_OUT(base, PEXINTMASK, 0x0);
PEX_OUT(base, PEXAERRMASK, 0x0);
PEX_OUT(base, PEXPRERRMASK, 0x0);
PEX_OUT(base, PEXVDMASK, 0x0);
}
#endif
static void pciex_enable_intr_all(unsigned int *base)
{
PEX_OUT(base, PEXINTMASK, 0x0000e7f1);
PEX_OUT(base, PEXAERRMASK, 0x03ff01ff);
PEX_OUT(base, PEXPRERRMASK, 0x0001010f);
PEX_OUT(base, PEXVDMASK, 0x00000001);
}
static void pciex_check_status(unsigned int *base)
{
uint32_t err = 0;
uint32_t intsts, aerr, prerr, rcvcp, lenerr;
uint32_t maea, maec;
intsts = PEX_IN(base, PEXINTSTS);
aerr = PEX_IN(base, PEXAERRSTS);
prerr = PEX_IN(base, PEXPRERRSTS);
rcvcp = PEX_IN(base, PEXRCVCPLIDA);
lenerr = PEX_IN(base, PEXLENERRIDA);
if (intsts || aerr || prerr || rcvcp || lenerr)
err = 1;
pr_info("PCEXC interrupt!!\n");
pr_info("PEXINTSTS :0x%08x\n", intsts);
pr_info("PEXAERRSTS :0x%08x\n", aerr);
pr_info("PEXPRERRSTS :0x%08x\n", prerr);
pr_info("PEXRCVCPLIDA :0x%08x\n", rcvcp);
pr_info("PEXLENERRIDA :0x%08x\n", lenerr);
/* print detail of Protection Error */
if (intsts & 0x00004000) {
uint32_t i, n;
for (i = 0; i < 4; i++) {
n = 1 << i;
if (prerr & n) {
maea = PEX_IN(base, PEXMAEA(i));
maec = PEX_IN(base, PEXMAEC(i));
pr_info("PEXMAEC%d :0x%08x\n", i, maec);
pr_info("PEXMAEA%d :0x%08x\n", i, maea);
}
}
}
if (err)
pciex_clear_intr_all(base);
}
static irqreturn_t pciex_handle_internal_irq(int irq, void *dev_id)
{
struct pci_controller *phb = dev_id;
pr_debug("PCIEX:pciex_handle_internal_irq(irq=%d)\n", irq);
BUG_ON(phb->cfg_addr == NULL);
pciex_check_status(phb->cfg_addr);
return IRQ_HANDLED;
}
static __init int celleb_setup_pciex(struct device_node *node,
struct pci_controller *phb)
{
struct resource r;
struct of_irq oirq;
int virq;
/* SMMIO registers; used inside this file */
if (of_address_to_resource(node, 0, &r)) {
pr_err("PCIEXC:Failed to get config resource.\n");
return 1;
}
phb->cfg_addr = ioremap(r.start, r.end - r.start + 1);
if (!phb->cfg_addr) {
pr_err("PCIEXC:Failed to remap SMMIO region.\n");
return 1;
}
/* Not use cfg_data, cmd and data regs are near address reg */
phb->cfg_data = NULL;
/* set pci_ops */
phb->ops = &scc_pciex_pci_ops;
/* internal interrupt handler */
if (of_irq_map_one(node, 1, &oirq)) {
pr_err("PCIEXC:Failed to map irq\n");
goto error;
}
virq = irq_create_of_mapping(oirq.controller, oirq.specifier,
oirq.size);
if (request_irq(virq, pciex_handle_internal_irq,
IRQF_DISABLED, "pciex", (void *)phb)) {
pr_err("PCIEXC:Failed to request irq\n");
goto error;
}
/* enable all interrupts */
pciex_clear_intr_all(phb->cfg_addr);
pciex_enable_intr_all(phb->cfg_addr);
/* MSI: TBD */
return 0;
error:
phb->cfg_data = NULL;
if (phb->cfg_addr)
iounmap(phb->cfg_addr);
phb->cfg_addr = NULL;
return 1;
}
struct celleb_phb_spec celleb_pciex_spec __initdata = {
.setup = celleb_setup_pciex,
.ops = &scc_pciex_ops,
.iowa_init = &scc_pciex_iowa_init,
};