u-boot/drivers/pci/fsl_pci_init.c
Minghuan Lian 1d0b59a9b0 fsl/pci: Set CFG_READY for PCIe v3.0 and later
Freescale PCIe controllers v3.0 and later need to set bit
CFG_READY to allow all inbound configuration transactions
to be processed normally when in EP mode. However, bit
CFG_READY has been moved from PCIe configuration space to
CCSR PCIe configuration register comparing previous version.
The patch is to set this bit according to PCIe version.

Signed-off-by: Ed Swarthout <Ed.Swarthout@freescale.com>
Signed-off-by: Roy Zang <tie-fei.zang@freescale.com>
Signed-off-by: Minghuan Lian <Minghuan.Lian@freescale.com>
Reviewed-by: York Sun <yorksun@freescale.com>
2015-05-04 09:24:23 -07:00

915 lines
25 KiB
C

/*
* Copyright 2007-2012 Freescale Semiconductor, Inc.
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <malloc.h>
#include <asm/fsl_serdes.h>
DECLARE_GLOBAL_DATA_PTR;
/*
* PCI/PCIE Controller initialization for mpc85xx/mpc86xx soc's
*
* Initialize controller and call the common driver/pci pci_hose_scan to
* scan for bridges and devices.
*
* Hose fields which need to be pre-initialized by board specific code:
* regions[]
* first_busno
*
* Fields updated:
* last_busno
*/
#include <pci.h>
#include <asm/io.h>
#include <asm/fsl_pci.h>
#ifndef CONFIG_SYS_PCI_MEMORY_BUS
#define CONFIG_SYS_PCI_MEMORY_BUS 0
#endif
#ifndef CONFIG_SYS_PCI_MEMORY_PHYS
#define CONFIG_SYS_PCI_MEMORY_PHYS 0
#endif
#if defined(CONFIG_SYS_PCI_64BIT) && !defined(CONFIG_SYS_PCI64_MEMORY_BUS)
#define CONFIG_SYS_PCI64_MEMORY_BUS (64ull*1024*1024*1024)
#endif
/* Setup one inbound ATMU window.
*
* We let the caller decide what the window size should be
*/
static void set_inbound_window(volatile pit_t *pi,
struct pci_region *r,
u64 size)
{
u32 sz = (__ilog2_u64(size) - 1);
#ifdef CONFIG_SYS_FSL_ERRATUM_A005434
u32 flag = 0;
#else
u32 flag = PIWAR_LOCAL;
#endif
flag |= PIWAR_EN | PIWAR_READ_SNOOP | PIWAR_WRITE_SNOOP;
out_be32(&pi->pitar, r->phys_start >> 12);
out_be32(&pi->piwbar, r->bus_start >> 12);
#ifdef CONFIG_SYS_PCI_64BIT
out_be32(&pi->piwbear, r->bus_start >> 44);
#else
out_be32(&pi->piwbear, 0);
#endif
if (r->flags & PCI_REGION_PREFETCH)
flag |= PIWAR_PF;
out_be32(&pi->piwar, flag | sz);
}
int fsl_setup_hose(struct pci_controller *hose, unsigned long addr)
{
volatile ccsr_fsl_pci_t *pci = (ccsr_fsl_pci_t *) addr;
/* Reset hose to make sure its in a clean state */
memset(hose, 0, sizeof(struct pci_controller));
pci_setup_indirect(hose, (u32)&pci->cfg_addr, (u32)&pci->cfg_data);
return fsl_is_pci_agent(hose);
}
static int fsl_pci_setup_inbound_windows(struct pci_controller *hose,
u64 out_lo, u8 pcie_cap,
volatile pit_t *pi)
{
struct pci_region *r = hose->regions + hose->region_count;
u64 sz = min((u64)gd->ram_size, (1ull << 32));
phys_addr_t phys_start = CONFIG_SYS_PCI_MEMORY_PHYS;
pci_addr_t bus_start = CONFIG_SYS_PCI_MEMORY_BUS;
pci_size_t pci_sz;
/* we have no space available for inbound memory mapping */
if (bus_start > out_lo) {
printf ("no space for inbound mapping of memory\n");
return 0;
}
/* limit size */
if ((bus_start + sz) > out_lo) {
sz = out_lo - bus_start;
debug ("limiting size to %llx\n", sz);
}
pci_sz = 1ull << __ilog2_u64(sz);
/*
* we can overlap inbound/outbound windows on PCI-E since RX & TX
* links a separate
*/
if ((pcie_cap == PCI_CAP_ID_EXP) && (pci_sz < sz)) {
debug ("R0 bus_start: %llx phys_start: %llx size: %llx\n",
(u64)bus_start, (u64)phys_start, (u64)sz);
pci_set_region(r, bus_start, phys_start, sz,
PCI_REGION_MEM | PCI_REGION_SYS_MEMORY |
PCI_REGION_PREFETCH);
/* if we aren't an exact power of two match, pci_sz is smaller
* round it up to the next power of two. We report the actual
* size to pci region tracking.
*/
if (pci_sz != sz)
sz = 2ull << __ilog2_u64(sz);
set_inbound_window(pi--, r++, sz);
sz = 0; /* make sure we dont set the R2 window */
} else {
debug ("R0 bus_start: %llx phys_start: %llx size: %llx\n",
(u64)bus_start, (u64)phys_start, (u64)pci_sz);
pci_set_region(r, bus_start, phys_start, pci_sz,
PCI_REGION_MEM | PCI_REGION_SYS_MEMORY |
PCI_REGION_PREFETCH);
set_inbound_window(pi--, r++, pci_sz);
sz -= pci_sz;
bus_start += pci_sz;
phys_start += pci_sz;
pci_sz = 1ull << __ilog2_u64(sz);
if (sz) {
debug ("R1 bus_start: %llx phys_start: %llx size: %llx\n",
(u64)bus_start, (u64)phys_start, (u64)pci_sz);
pci_set_region(r, bus_start, phys_start, pci_sz,
PCI_REGION_MEM | PCI_REGION_SYS_MEMORY |
PCI_REGION_PREFETCH);
set_inbound_window(pi--, r++, pci_sz);
sz -= pci_sz;
bus_start += pci_sz;
phys_start += pci_sz;
}
}
#if defined(CONFIG_PHYS_64BIT) && defined(CONFIG_SYS_PCI_64BIT)
/*
* On 64-bit capable systems, set up a mapping for all of DRAM
* in high pci address space.
*/
pci_sz = 1ull << __ilog2_u64(gd->ram_size);
/* round up to the next largest power of two */
if (gd->ram_size > pci_sz)
pci_sz = 1ull << (__ilog2_u64(gd->ram_size) + 1);
debug ("R64 bus_start: %llx phys_start: %llx size: %llx\n",
(u64)CONFIG_SYS_PCI64_MEMORY_BUS,
(u64)CONFIG_SYS_PCI_MEMORY_PHYS,
(u64)pci_sz);
pci_set_region(r,
CONFIG_SYS_PCI64_MEMORY_BUS,
CONFIG_SYS_PCI_MEMORY_PHYS,
pci_sz,
PCI_REGION_MEM | PCI_REGION_SYS_MEMORY |
PCI_REGION_PREFETCH);
set_inbound_window(pi--, r++, pci_sz);
#else
pci_sz = 1ull << __ilog2_u64(sz);
if (sz) {
debug ("R2 bus_start: %llx phys_start: %llx size: %llx\n",
(u64)bus_start, (u64)phys_start, (u64)pci_sz);
pci_set_region(r, bus_start, phys_start, pci_sz,
PCI_REGION_MEM | PCI_REGION_SYS_MEMORY |
PCI_REGION_PREFETCH);
sz -= pci_sz;
bus_start += pci_sz;
phys_start += pci_sz;
set_inbound_window(pi--, r++, pci_sz);
}
#endif
#ifdef CONFIG_PHYS_64BIT
if (sz && (((u64)gd->ram_size) < (1ull << 32)))
printf("Was not able to map all of memory via "
"inbound windows -- %lld remaining\n", sz);
#endif
hose->region_count = r - hose->regions;
return 1;
}
#ifdef CONFIG_SRIO_PCIE_BOOT_MASTER
static void fsl_pcie_boot_master(pit_t *pi)
{
/* configure inbound window for slave's u-boot image */
debug("PCIEBOOT - MASTER: Inbound window for slave's image; "
"Local = 0x%llx, Bus = 0x%llx, Size = 0x%x\n",
(u64)CONFIG_SRIO_PCIE_BOOT_IMAGE_MEM_PHYS,
(u64)CONFIG_SRIO_PCIE_BOOT_IMAGE_MEM_BUS1,
CONFIG_SRIO_PCIE_BOOT_IMAGE_SIZE);
struct pci_region r_inbound;
u32 sz_inbound = __ilog2_u64(CONFIG_SRIO_PCIE_BOOT_IMAGE_SIZE)
- 1;
pci_set_region(&r_inbound,
CONFIG_SRIO_PCIE_BOOT_IMAGE_MEM_BUS1,
CONFIG_SRIO_PCIE_BOOT_IMAGE_MEM_PHYS,
sz_inbound,
PCI_REGION_MEM | PCI_REGION_SYS_MEMORY);
set_inbound_window(pi--, &r_inbound,
CONFIG_SRIO_PCIE_BOOT_IMAGE_SIZE);
/* configure inbound window for slave's u-boot image */
debug("PCIEBOOT - MASTER: Inbound window for slave's image; "
"Local = 0x%llx, Bus = 0x%llx, Size = 0x%x\n",
(u64)CONFIG_SRIO_PCIE_BOOT_IMAGE_MEM_PHYS,
(u64)CONFIG_SRIO_PCIE_BOOT_IMAGE_MEM_BUS2,
CONFIG_SRIO_PCIE_BOOT_IMAGE_SIZE);
pci_set_region(&r_inbound,
CONFIG_SRIO_PCIE_BOOT_IMAGE_MEM_BUS2,
CONFIG_SRIO_PCIE_BOOT_IMAGE_MEM_PHYS,
sz_inbound,
PCI_REGION_MEM | PCI_REGION_SYS_MEMORY);
set_inbound_window(pi--, &r_inbound,
CONFIG_SRIO_PCIE_BOOT_IMAGE_SIZE);
/* configure inbound window for slave's ucode and ENV */
debug("PCIEBOOT - MASTER: Inbound window for slave's "
"ucode and ENV; "
"Local = 0x%llx, Bus = 0x%llx, Size = 0x%x\n",
(u64)CONFIG_SRIO_PCIE_BOOT_UCODE_ENV_MEM_PHYS,
(u64)CONFIG_SRIO_PCIE_BOOT_UCODE_ENV_MEM_BUS,
CONFIG_SRIO_PCIE_BOOT_UCODE_ENV_SIZE);
sz_inbound = __ilog2_u64(CONFIG_SRIO_PCIE_BOOT_UCODE_ENV_SIZE)
- 1;
pci_set_region(&r_inbound,
CONFIG_SRIO_PCIE_BOOT_UCODE_ENV_MEM_BUS,
CONFIG_SRIO_PCIE_BOOT_UCODE_ENV_MEM_PHYS,
sz_inbound,
PCI_REGION_MEM | PCI_REGION_SYS_MEMORY);
set_inbound_window(pi--, &r_inbound,
CONFIG_SRIO_PCIE_BOOT_UCODE_ENV_SIZE);
}
static void fsl_pcie_boot_master_release_slave(int port)
{
unsigned long release_addr;
/* now release slave's core 0 */
switch (port) {
case 1:
release_addr = CONFIG_SYS_PCIE1_MEM_VIRT
+ CONFIG_SRIO_PCIE_BOOT_BRR_OFFSET;
break;
#ifdef CONFIG_SYS_PCIE2_MEM_VIRT
case 2:
release_addr = CONFIG_SYS_PCIE2_MEM_VIRT
+ CONFIG_SRIO_PCIE_BOOT_BRR_OFFSET;
break;
#endif
#ifdef CONFIG_SYS_PCIE3_MEM_VIRT
case 3:
release_addr = CONFIG_SYS_PCIE3_MEM_VIRT
+ CONFIG_SRIO_PCIE_BOOT_BRR_OFFSET;
break;
#endif
default:
release_addr = 0;
break;
}
if (release_addr != 0) {
out_be32((void *)release_addr,
CONFIG_SRIO_PCIE_BOOT_RELEASE_MASK);
debug("PCIEBOOT - MASTER: "
"Release slave successfully! Now the slave should start up!\n");
} else {
debug("PCIEBOOT - MASTER: "
"Release slave failed!\n");
}
}
#endif
void fsl_pci_init(struct pci_controller *hose, struct fsl_pci_info *pci_info)
{
u32 cfg_addr = (u32)&((ccsr_fsl_pci_t *)pci_info->regs)->cfg_addr;
u32 cfg_data = (u32)&((ccsr_fsl_pci_t *)pci_info->regs)->cfg_data;
u16 temp16;
u32 temp32;
u32 block_rev;
int enabled, r, inbound = 0;
u16 ltssm;
u8 temp8, pcie_cap;
int pcie_cap_pos;
int pci_dcr;
int pci_dsr;
int pci_lsr;
#if defined(CONFIG_FSL_PCIE_DISABLE_ASPM)
int pci_lcr;
#endif
volatile ccsr_fsl_pci_t *pci = (ccsr_fsl_pci_t *)cfg_addr;
struct pci_region *reg = hose->regions + hose->region_count;
pci_dev_t dev = PCI_BDF(hose->first_busno, 0, 0);
/* Initialize ATMU registers based on hose regions and flags */
volatile pot_t *po = &pci->pot[1]; /* skip 0 */
volatile pit_t *pi;
u64 out_hi = 0, out_lo = -1ULL;
u32 pcicsrbar, pcicsrbar_sz;
pci_setup_indirect(hose, cfg_addr, cfg_data);
block_rev = in_be32(&pci->block_rev1);
if (PEX_IP_BLK_REV_2_2 <= block_rev) {
pi = &pci->pit[2]; /* 0xDC0 */
} else {
pi = &pci->pit[3]; /* 0xDE0 */
}
/* Handle setup of outbound windows first */
for (r = 0; r < hose->region_count; r++) {
unsigned long flags = hose->regions[r].flags;
u32 sz = (__ilog2_u64((u64)hose->regions[r].size) - 1);
flags &= PCI_REGION_SYS_MEMORY|PCI_REGION_TYPE;
if (flags != PCI_REGION_SYS_MEMORY) {
u64 start = hose->regions[r].bus_start;
u64 end = start + hose->regions[r].size;
out_be32(&po->powbar, hose->regions[r].phys_start >> 12);
out_be32(&po->potar, start >> 12);
#ifdef CONFIG_SYS_PCI_64BIT
out_be32(&po->potear, start >> 44);
#else
out_be32(&po->potear, 0);
#endif
if (hose->regions[r].flags & PCI_REGION_IO) {
out_be32(&po->powar, POWAR_EN | sz |
POWAR_IO_READ | POWAR_IO_WRITE);
} else {
out_be32(&po->powar, POWAR_EN | sz |
POWAR_MEM_READ | POWAR_MEM_WRITE);
out_lo = min(start, out_lo);
out_hi = max(end, out_hi);
}
po++;
}
}
debug("Outbound memory range: %llx:%llx\n", out_lo, out_hi);
/* setup PCSRBAR/PEXCSRBAR */
pci_hose_write_config_dword(hose, dev, PCI_BASE_ADDRESS_0, 0xffffffff);
pci_hose_read_config_dword (hose, dev, PCI_BASE_ADDRESS_0, &pcicsrbar_sz);
pcicsrbar_sz = ~pcicsrbar_sz + 1;
if (out_hi < (0x100000000ull - pcicsrbar_sz) ||
(out_lo > 0x100000000ull))
pcicsrbar = 0x100000000ull - pcicsrbar_sz;
else
pcicsrbar = (out_lo - pcicsrbar_sz) & -pcicsrbar_sz;
pci_hose_write_config_dword(hose, dev, PCI_BASE_ADDRESS_0, pcicsrbar);
out_lo = min(out_lo, (u64)pcicsrbar);
debug("PCICSRBAR @ 0x%x\n", pcicsrbar);
pci_set_region(reg++, pcicsrbar, CONFIG_SYS_CCSRBAR_PHYS,
pcicsrbar_sz, PCI_REGION_SYS_MEMORY);
hose->region_count++;
/* see if we are a PCIe or PCI controller */
pcie_cap_pos = pci_hose_find_capability(hose, dev, PCI_CAP_ID_EXP);
pci_dcr = pcie_cap_pos + 0x08;
pci_dsr = pcie_cap_pos + 0x0a;
pci_lsr = pcie_cap_pos + 0x12;
pci_hose_read_config_byte(hose, dev, pcie_cap_pos, &pcie_cap);
#ifdef CONFIG_SRIO_PCIE_BOOT_MASTER
/* boot from PCIE --master */
char *s = getenv("bootmaster");
char pcie[6];
sprintf(pcie, "PCIE%d", pci_info->pci_num);
if (s && (strcmp(s, pcie) == 0)) {
debug("PCIEBOOT - MASTER: Master port [ %d ] for pcie boot.\n",
pci_info->pci_num);
fsl_pcie_boot_master((pit_t *)pi);
} else {
/* inbound */
inbound = fsl_pci_setup_inbound_windows(hose,
out_lo, pcie_cap, pi);
}
#else
/* inbound */
inbound = fsl_pci_setup_inbound_windows(hose, out_lo, pcie_cap, pi);
#endif
for (r = 0; r < hose->region_count; r++)
debug("PCI reg:%d %016llx:%016llx %016llx %08lx\n", r,
(u64)hose->regions[r].phys_start,
(u64)hose->regions[r].bus_start,
(u64)hose->regions[r].size,
hose->regions[r].flags);
pci_register_hose(hose);
pciauto_config_init(hose); /* grab pci_{mem,prefetch,io} */
hose->current_busno = hose->first_busno;
out_be32(&pci->pedr, 0xffffffff); /* Clear any errors */
out_be32(&pci->peer, ~0x20140); /* Enable All Error Interrupts except
* - Master abort (pci)
* - Master PERR (pci)
* - ICCA (PCIe)
*/
pci_hose_read_config_dword(hose, dev, pci_dcr, &temp32);
temp32 |= 0xf000e; /* set URR, FER, NFER (but not CER) */
pci_hose_write_config_dword(hose, dev, pci_dcr, temp32);
#if defined(CONFIG_FSL_PCIE_DISABLE_ASPM)
pci_lcr = pcie_cap_pos + 0x10;
temp32 = 0;
pci_hose_read_config_dword(hose, dev, pci_lcr, &temp32);
temp32 &= ~0x03; /* Disable ASPM */
pci_hose_write_config_dword(hose, dev, pci_lcr, temp32);
udelay(1);
#endif
if (pcie_cap == PCI_CAP_ID_EXP) {
if (block_rev >= PEX_IP_BLK_REV_3_0) {
#define PEX_CSR0_LTSSM_MASK 0xFC
#define PEX_CSR0_LTSSM_SHIFT 2
ltssm = (in_be32(&pci->pex_csr0)
& PEX_CSR0_LTSSM_MASK) >> PEX_CSR0_LTSSM_SHIFT;
enabled = (ltssm == 0x11) ? 1 : 0;
#ifdef CONFIG_FSL_PCIE_RESET
int i;
/* assert PCIe reset */
setbits_be32(&pci->pdb_stat, 0x08000000);
(void) in_be32(&pci->pdb_stat);
udelay(1000);
/* clear PCIe reset */
clrbits_be32(&pci->pdb_stat, 0x08000000);
asm("sync;isync");
for (i = 0; i < 100 && ltssm < PCI_LTSSM_L0; i++) {
pci_hose_read_config_word(hose, dev, PCI_LTSSM,
&ltssm);
udelay(1000);
}
#endif
} else {
/* pci_hose_read_config_word(hose, dev, PCI_LTSSM, &ltssm); */
/* enabled = ltssm >= PCI_LTSSM_L0; */
pci_hose_read_config_word(hose, dev, PCI_LTSSM, &ltssm);
enabled = ltssm >= PCI_LTSSM_L0;
#ifdef CONFIG_FSL_PCIE_RESET
if (ltssm == 1) {
int i;
debug("....PCIe link error. " "LTSSM=0x%02x.", ltssm);
/* assert PCIe reset */
setbits_be32(&pci->pdb_stat, 0x08000000);
(void) in_be32(&pci->pdb_stat);
udelay(100);
debug(" Asserting PCIe reset @%p = %x\n",
&pci->pdb_stat, in_be32(&pci->pdb_stat));
/* clear PCIe reset */
clrbits_be32(&pci->pdb_stat, 0x08000000);
asm("sync;isync");
for (i=0; i<100 && ltssm < PCI_LTSSM_L0; i++) {
pci_hose_read_config_word(hose, dev, PCI_LTSSM,
&ltssm);
udelay(1000);
debug("....PCIe link error. "
"LTSSM=0x%02x.\n", ltssm);
}
enabled = ltssm >= PCI_LTSSM_L0;
/* we need to re-write the bar0 since a reset will
* clear it
*/
pci_hose_write_config_dword(hose, dev,
PCI_BASE_ADDRESS_0, pcicsrbar);
}
#endif
}
#ifdef CONFIG_SYS_P4080_ERRATUM_PCIE_A003
if (enabled == 0) {
serdes_corenet_t *srds_regs = (void *)CONFIG_SYS_FSL_CORENET_SERDES_ADDR;
temp32 = in_be32(&srds_regs->srdspccr0);
if ((temp32 >> 28) == 3) {
int i;
out_be32(&srds_regs->srdspccr0, 2 << 28);
setbits_be32(&pci->pdb_stat, 0x08000000);
in_be32(&pci->pdb_stat);
udelay(100);
clrbits_be32(&pci->pdb_stat, 0x08000000);
asm("sync;isync");
for (i=0; i < 100 && ltssm < PCI_LTSSM_L0; i++) {
pci_hose_read_config_word(hose, dev, PCI_LTSSM, &ltssm);
udelay(1000);
}
enabled = ltssm >= PCI_LTSSM_L0;
}
}
#endif
if (!enabled) {
/* Let the user know there's no PCIe link for root
* complex. for endpoint, the link may not setup, so
* print undetermined.
*/
if (fsl_is_pci_agent(hose))
printf("undetermined, regs @ 0x%lx\n", pci_info->regs);
else
printf("no link, regs @ 0x%lx\n", pci_info->regs);
hose->last_busno = hose->first_busno;
return;
}
out_be32(&pci->pme_msg_det, 0xffffffff);
out_be32(&pci->pme_msg_int_en, 0xffffffff);
/* Print the negotiated PCIe link width */
pci_hose_read_config_word(hose, dev, pci_lsr, &temp16);
printf("x%d gen%d, regs @ 0x%lx\n", (temp16 & 0x3f0) >> 4,
(temp16 & 0xf), pci_info->regs);
hose->current_busno++; /* Start scan with secondary */
pciauto_prescan_setup_bridge(hose, dev, hose->current_busno);
}
/* Use generic setup_device to initialize standard pci regs,
* but do not allocate any windows since any BAR found (such
* as PCSRBAR) is not in this cpu's memory space.
*/
pciauto_setup_device(hose, dev, 0, hose->pci_mem,
hose->pci_prefetch, hose->pci_io);
if (inbound) {
pci_hose_read_config_word(hose, dev, PCI_COMMAND, &temp16);
pci_hose_write_config_word(hose, dev, PCI_COMMAND,
temp16 | PCI_COMMAND_MEMORY);
}
#ifndef CONFIG_PCI_NOSCAN
if (!fsl_is_pci_agent(hose)) {
debug(" Scanning PCI bus %02x\n",
hose->current_busno);
hose->last_busno = pci_hose_scan_bus(hose, hose->current_busno);
} else {
debug(" Not scanning PCI bus %02x. PI=%x\n",
hose->current_busno, temp8);
hose->last_busno = hose->current_busno;
}
/* if we are PCIe - update limit regs and subordinate busno
* for the virtual P2P bridge
*/
if (pcie_cap == PCI_CAP_ID_EXP) {
pciauto_postscan_setup_bridge(hose, dev, hose->last_busno);
}
#else
hose->last_busno = hose->current_busno;
#endif
/* Clear all error indications */
if (pcie_cap == PCI_CAP_ID_EXP)
out_be32(&pci->pme_msg_det, 0xffffffff);
out_be32(&pci->pedr, 0xffffffff);
pci_hose_read_config_word(hose, dev, pci_dsr, &temp16);
if (temp16) {
pci_hose_write_config_word(hose, dev, pci_dsr, 0xffff);
}
pci_hose_read_config_word (hose, dev, PCI_SEC_STATUS, &temp16);
if (temp16) {
pci_hose_write_config_word(hose, dev, PCI_SEC_STATUS, 0xffff);
}
}
int fsl_is_pci_agent(struct pci_controller *hose)
{
int pcie_cap_pos;
u8 pcie_cap;
pci_dev_t dev = PCI_BDF(hose->first_busno, 0, 0);
pcie_cap_pos = pci_hose_find_capability(hose, dev, PCI_CAP_ID_EXP);
pci_hose_read_config_byte(hose, dev, pcie_cap_pos, &pcie_cap);
if (pcie_cap == PCI_CAP_ID_EXP) {
u8 header_type;
pci_hose_read_config_byte(hose, dev, PCI_HEADER_TYPE,
&header_type);
return (header_type & 0x7f) == PCI_HEADER_TYPE_NORMAL;
} else {
u8 prog_if;
pci_hose_read_config_byte(hose, dev, PCI_CLASS_PROG, &prog_if);
/* Programming Interface (PCI_CLASS_PROG)
* 0 == pci host or pcie root-complex,
* 1 == pci agent or pcie end-point
*/
return (prog_if == FSL_PROG_IF_AGENT);
}
}
int fsl_pci_init_port(struct fsl_pci_info *pci_info,
struct pci_controller *hose, int busno)
{
volatile ccsr_fsl_pci_t *pci;
struct pci_region *r;
pci_dev_t dev = PCI_BDF(busno,0,0);
int pcie_cap_pos;
u8 pcie_cap;
pci = (ccsr_fsl_pci_t *) pci_info->regs;
/* on non-PCIe controllers we don't have pme_msg_det so this code
* should do nothing since the read will return 0
*/
if (in_be32(&pci->pme_msg_det)) {
out_be32(&pci->pme_msg_det, 0xffffffff);
debug (" with errors. Clearing. Now 0x%08x",
pci->pme_msg_det);
}
r = hose->regions + hose->region_count;
/* outbound memory */
pci_set_region(r++,
pci_info->mem_bus,
pci_info->mem_phys,
pci_info->mem_size,
PCI_REGION_MEM);
/* outbound io */
pci_set_region(r++,
pci_info->io_bus,
pci_info->io_phys,
pci_info->io_size,
PCI_REGION_IO);
hose->region_count = r - hose->regions;
hose->first_busno = busno;
fsl_pci_init(hose, pci_info);
if (fsl_is_pci_agent(hose)) {
fsl_pci_config_unlock(hose);
hose->last_busno = hose->first_busno;
#ifdef CONFIG_SRIO_PCIE_BOOT_MASTER
} else {
/* boot from PCIE --master releases slave's core 0 */
char *s = getenv("bootmaster");
char pcie[6];
sprintf(pcie, "PCIE%d", pci_info->pci_num);
if (s && (strcmp(s, pcie) == 0))
fsl_pcie_boot_master_release_slave(pci_info->pci_num);
#endif
}
pcie_cap_pos = pci_hose_find_capability(hose, dev, PCI_CAP_ID_EXP);
pci_hose_read_config_byte(hose, dev, pcie_cap_pos, &pcie_cap);
printf("PCI%s%x: Bus %02x - %02x\n", pcie_cap == PCI_CAP_ID_EXP ?
"e" : "", pci_info->pci_num,
hose->first_busno, hose->last_busno);
return(hose->last_busno + 1);
}
/* Enable inbound PCI config cycles for agent/endpoint interface */
void fsl_pci_config_unlock(struct pci_controller *hose)
{
pci_dev_t dev = PCI_BDF(hose->first_busno,0,0);
int pcie_cap_pos;
u8 pcie_cap;
u16 pbfr;
if (!fsl_is_pci_agent(hose))
return;
pcie_cap_pos = pci_hose_find_capability(hose, dev, PCI_CAP_ID_EXP);
pci_hose_read_config_byte(hose, dev, pcie_cap_pos, &pcie_cap);
if (pcie_cap != 0x0) {
ccsr_fsl_pci_t *pci = (ccsr_fsl_pci_t *)hose->cfg_addr;
u32 block_rev = in_be32(&pci->block_rev1);
/* PCIe - set CFG_READY bit of Configuration Ready Register */
if (block_rev >= PEX_IP_BLK_REV_3_0)
setbits_be32(&pci->config, FSL_PCIE_V3_CFG_RDY);
else
pci_hose_write_config_byte(hose, dev,
FSL_PCIE_CFG_RDY, 0x1);
} else {
/* PCI - clear ACL bit of PBFR */
pci_hose_read_config_word(hose, dev, FSL_PCI_PBFR, &pbfr);
pbfr &= ~0x20;
pci_hose_write_config_word(hose, dev, FSL_PCI_PBFR, pbfr);
}
}
#if defined(CONFIG_PCIE1) || defined(CONFIG_PCIE2) || \
defined(CONFIG_PCIE3) || defined(CONFIG_PCIE4)
int fsl_configure_pcie(struct fsl_pci_info *info,
struct pci_controller *hose,
const char *connected, int busno)
{
int is_endpoint;
set_next_law(info->mem_phys, law_size_bits(info->mem_size), info->law);
set_next_law(info->io_phys, law_size_bits(info->io_size), info->law);
is_endpoint = fsl_setup_hose(hose, info->regs);
printf("PCIe%u: %s", info->pci_num,
is_endpoint ? "Endpoint" : "Root Complex");
if (connected)
printf(" of %s", connected);
puts(", ");
return fsl_pci_init_port(info, hose, busno);
}
#if defined(CONFIG_FSL_CORENET)
#ifdef CONFIG_SYS_FSL_QORIQ_CHASSIS2
#define _DEVDISR_PCIE1 FSL_CORENET_DEVDISR3_PCIE1
#define _DEVDISR_PCIE2 FSL_CORENET_DEVDISR3_PCIE2
#define _DEVDISR_PCIE3 FSL_CORENET_DEVDISR3_PCIE3
#define _DEVDISR_PCIE4 FSL_CORENET_DEVDISR3_PCIE4
#else
#define _DEVDISR_PCIE1 FSL_CORENET_DEVDISR_PCIE1
#define _DEVDISR_PCIE2 FSL_CORENET_DEVDISR_PCIE2
#define _DEVDISR_PCIE3 FSL_CORENET_DEVDISR_PCIE3
#define _DEVDISR_PCIE4 FSL_CORENET_DEVDISR_PCIE4
#endif
#define CONFIG_SYS_MPC8xxx_GUTS_ADDR CONFIG_SYS_MPC85xx_GUTS_ADDR
#elif defined(CONFIG_MPC85xx)
#define _DEVDISR_PCIE1 MPC85xx_DEVDISR_PCIE
#define _DEVDISR_PCIE2 MPC85xx_DEVDISR_PCIE2
#define _DEVDISR_PCIE3 MPC85xx_DEVDISR_PCIE3
#define _DEVDISR_PCIE4 0
#define CONFIG_SYS_MPC8xxx_GUTS_ADDR CONFIG_SYS_MPC85xx_GUTS_ADDR
#elif defined(CONFIG_MPC86xx)
#define _DEVDISR_PCIE1 MPC86xx_DEVDISR_PCIE1
#define _DEVDISR_PCIE2 MPC86xx_DEVDISR_PCIE2
#define _DEVDISR_PCIE3 0
#define _DEVDISR_PCIE4 0
#define CONFIG_SYS_MPC8xxx_GUTS_ADDR \
(&((immap_t *)CONFIG_SYS_IMMR)->im_gur)
#else
#error "No defines for DEVDISR_PCIE"
#endif
/* Implement a dummy function for those platforms w/o SERDES */
static const char *__board_serdes_name(enum srds_prtcl device)
{
switch (device) {
#ifdef CONFIG_SYS_PCIE1_NAME
case PCIE1:
return CONFIG_SYS_PCIE1_NAME;
#endif
#ifdef CONFIG_SYS_PCIE2_NAME
case PCIE2:
return CONFIG_SYS_PCIE2_NAME;
#endif
#ifdef CONFIG_SYS_PCIE3_NAME
case PCIE3:
return CONFIG_SYS_PCIE3_NAME;
#endif
#ifdef CONFIG_SYS_PCIE4_NAME
case PCIE4:
return CONFIG_SYS_PCIE4_NAME;
#endif
default:
return NULL;
}
return NULL;
}
__attribute__((weak, alias("__board_serdes_name"))) const char *
board_serdes_name(enum srds_prtcl device);
static u32 devdisr_mask[] = {
_DEVDISR_PCIE1,
_DEVDISR_PCIE2,
_DEVDISR_PCIE3,
_DEVDISR_PCIE4,
};
int fsl_pcie_init_ctrl(int busno, u32 devdisr, enum srds_prtcl dev,
struct fsl_pci_info *pci_info)
{
struct pci_controller *hose;
int num = dev - PCIE1;
hose = calloc(1, sizeof(struct pci_controller));
if (!hose)
return busno;
if (is_serdes_configured(dev) && !(devdisr & devdisr_mask[num])) {
busno = fsl_configure_pcie(pci_info, hose,
board_serdes_name(dev), busno);
} else {
printf("PCIe%d: disabled\n", num + 1);
}
return busno;
}
int fsl_pcie_init_board(int busno)
{
struct fsl_pci_info pci_info;
ccsr_gur_t *gur = (void *)CONFIG_SYS_MPC8xxx_GUTS_ADDR;
u32 devdisr;
u32 *addr;
#ifdef CONFIG_SYS_FSL_QORIQ_CHASSIS2
addr = &gur->devdisr3;
#else
addr = &gur->devdisr;
#endif
devdisr = in_be32(addr);
#ifdef CONFIG_PCIE1
SET_STD_PCIE_INFO(pci_info, 1);
busno = fsl_pcie_init_ctrl(busno, devdisr, PCIE1, &pci_info);
#else
setbits_be32(addr, _DEVDISR_PCIE1); /* disable */
#endif
#ifdef CONFIG_PCIE2
SET_STD_PCIE_INFO(pci_info, 2);
busno = fsl_pcie_init_ctrl(busno, devdisr, PCIE2, &pci_info);
#else
setbits_be32(addr, _DEVDISR_PCIE2); /* disable */
#endif
#ifdef CONFIG_PCIE3
SET_STD_PCIE_INFO(pci_info, 3);
busno = fsl_pcie_init_ctrl(busno, devdisr, PCIE3, &pci_info);
#else
setbits_be32(addr, _DEVDISR_PCIE3); /* disable */
#endif
#ifdef CONFIG_PCIE4
SET_STD_PCIE_INFO(pci_info, 4);
busno = fsl_pcie_init_ctrl(busno, devdisr, PCIE4, &pci_info);
#else
setbits_be32(addr, _DEVDISR_PCIE4); /* disable */
#endif
return busno;
}
#else
int fsl_pcie_init_ctrl(int busno, u32 devdisr, enum srds_prtcl dev,
struct fsl_pci_info *pci_info)
{
return busno;
}
int fsl_pcie_init_board(int busno)
{
return busno;
}
#endif
#ifdef CONFIG_OF_BOARD_SETUP
#include <libfdt.h>
#include <fdt_support.h>
void ft_fsl_pci_setup(void *blob, const char *pci_compat,
unsigned long ctrl_addr)
{
int off;
u32 bus_range[2];
phys_addr_t p_ctrl_addr = (phys_addr_t)ctrl_addr;
struct pci_controller *hose;
hose = find_hose_by_cfg_addr((void *)(ctrl_addr));
/* convert ctrl_addr to true physical address */
p_ctrl_addr = (phys_addr_t)ctrl_addr - CONFIG_SYS_CCSRBAR;
p_ctrl_addr += CONFIG_SYS_CCSRBAR_PHYS;
off = fdt_node_offset_by_compat_reg(blob, pci_compat, p_ctrl_addr);
if (off < 0)
return;
/* We assume a cfg_addr not being set means we didn't setup the controller */
if ((hose == NULL) || (hose->cfg_addr == NULL)) {
fdt_del_node(blob, off);
} else {
bus_range[0] = 0;
bus_range[1] = hose->last_busno - hose->first_busno;
fdt_setprop(blob, off, "bus-range", &bus_range[0], 2*4);
fdt_pci_dma_ranges(blob, off, hose);
}
}
#endif