/*
- * MPC85xx/86xx PCI/PCIE support routing.
+ * MPC83xx/85xx/86xx PCI/PCIE support routing.
*
- * Copyright 2007 Freescale Semiconductor, Inc
+ * Copyright 2007-2009 Freescale Semiconductor, Inc.
+ * Copyright 2008-2009 MontaVista Software, Inc.
*
* Initial author: Xianghua Xiao <x.xiao@freescale.com>
* Recode: ZHANG WEI <wei.zhang@freescale.com>
* Rewrite the routing for Frescale PCI and PCI Express
* Roy Zang <tie-fei.zang@freescale.com>
+ * MPC83xx PCI-Express support:
+ * Tony Li <tony.li@freescale.com>
+ * Anton Vorontsov <avorontsov@ru.mvista.com>
*
* 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
#include <linux/string.h>
#include <linux/init.h>
#include <linux/bootmem.h>
+#include <linux/lmb.h>
+#include <linux/log2.h>
+#include <linux/slab.h>
#include <asm/io.h>
#include <asm/prom.h>
#include <sysdev/fsl_soc.h>
#include <sysdev/fsl_pci.h>
+static int fsl_pcie_bus_fixup;
+
+static void __init quirk_fsl_pcie_header(struct pci_dev *dev)
+{
+ /* if we aren't a PCIe don't bother */
+ if (!pci_find_capability(dev, PCI_CAP_ID_EXP))
+ return;
+
+ dev->class = PCI_CLASS_BRIDGE_PCI << 8;
+ fsl_pcie_bus_fixup = 1;
+ return;
+}
+
+static int __init fsl_pcie_check_link(struct pci_controller *hose)
+{
+ u32 val;
+
+ early_read_config_dword(hose, 0, 0, PCIE_LTSSM, &val);
+ if (val < PCIE_LTSSM_L0)
+ return 1;
+ return 0;
+}
+
+#if defined(CONFIG_FSL_SOC_BOOKE) || defined(CONFIG_PPC_86xx)
+static int __init setup_one_atmu(struct ccsr_pci __iomem *pci,
+ unsigned int index, const struct resource *res,
+ resource_size_t offset)
+{
+ resource_size_t pci_addr = res->start - offset;
+ resource_size_t phys_addr = res->start;
+ resource_size_t size = res->end - res->start + 1;
+ u32 flags = 0x80044000; /* enable & mem R/W */
+ unsigned int i;
+
+ pr_debug("PCI MEM resource start 0x%016llx, size 0x%016llx.\n",
+ (u64)res->start, (u64)size);
+
+ if (res->flags & IORESOURCE_PREFETCH)
+ flags |= 0x10000000; /* enable relaxed ordering */
+
+ for (i = 0; size > 0; i++) {
+ unsigned int bits = min(__ilog2(size),
+ __ffs(pci_addr | phys_addr));
+
+ if (index + i >= 5)
+ return -1;
+
+ out_be32(&pci->pow[index + i].potar, pci_addr >> 12);
+ out_be32(&pci->pow[index + i].potear, (u64)pci_addr >> 44);
+ out_be32(&pci->pow[index + i].powbar, phys_addr >> 12);
+ out_be32(&pci->pow[index + i].powar, flags | (bits - 1));
+
+ pci_addr += (resource_size_t)1U << bits;
+ phys_addr += (resource_size_t)1U << bits;
+ size -= (resource_size_t)1U << bits;
+ }
+
+ return i;
+}
+
/* atmu setup for fsl pci/pcie controller */
-void __init setup_pci_atmu(struct pci_controller *hose, struct resource *rsrc)
+static void __init setup_pci_atmu(struct pci_controller *hose,
+ struct resource *rsrc)
{
struct ccsr_pci __iomem *pci;
- int i;
-
- pr_debug("PCI memory map start 0x%x, size 0x%x\n", rsrc->start,
- rsrc->end - rsrc->start + 1);
+ int i, j, n, mem_log, win_idx = 2;
+ u64 mem, sz, paddr_hi = 0;
+ u64 paddr_lo = ULLONG_MAX;
+ u32 pcicsrbar = 0, pcicsrbar_sz;
+ u32 piwar = PIWAR_EN | PIWAR_PF | PIWAR_TGI_LOCAL |
+ PIWAR_READ_SNOOP | PIWAR_WRITE_SNOOP;
+ char *name = hose->dn->full_name;
+
+ pr_debug("PCI memory map start 0x%016llx, size 0x%016llx\n",
+ (u64)rsrc->start, (u64)rsrc->end - (u64)rsrc->start + 1);
pci = ioremap(rsrc->start, rsrc->end - rsrc->start + 1);
+ if (!pci) {
+ dev_err(hose->parent, "Unable to map ATMU registers\n");
+ return;
+ }
- /* Disable all windows (except powar0 since its ignored) */
+ /* Disable all windows (except powar0 since it's ignored) */
for(i = 1; i < 5; i++)
out_be32(&pci->pow[i].powar, 0);
for(i = 0; i < 3; i++)
out_be32(&pci->piw[i].piwar, 0);
/* Setup outbound MEM window */
- for(i = 0; i < 3; i++)
- if (hose->mem_resources[i].flags & IORESOURCE_MEM){
- pr_debug("PCI MEM resource start 0x%08x, size 0x%08x.\n",
- hose->mem_resources[i].start,
- hose->mem_resources[i].end
- - hose->mem_resources[i].start + 1);
- out_be32(&pci->pow[i+1].potar,
- (hose->mem_resources[i].start >> 12)
- & 0x000fffff);
- out_be32(&pci->pow[i+1].potear, 0);
- out_be32(&pci->pow[i+1].powbar,
- (hose->mem_resources[i].start >> 12)
- & 0x000fffff);
- /* Enable, Mem R/W */
- out_be32(&pci->pow[i+1].powar, 0x80044000
- | (__ilog2(hose->mem_resources[i].end
- - hose->mem_resources[i].start + 1) - 1));
- }
+ for(i = 0, j = 1; i < 3; i++) {
+ if (!(hose->mem_resources[i].flags & IORESOURCE_MEM))
+ continue;
+
+ paddr_lo = min(paddr_lo, (u64)hose->mem_resources[i].start);
+ paddr_hi = max(paddr_hi, (u64)hose->mem_resources[i].end);
+
+ n = setup_one_atmu(pci, j, &hose->mem_resources[i],
+ hose->pci_mem_offset);
+
+ if (n < 0 || j >= 5) {
+ pr_err("Ran out of outbound PCI ATMUs for resource %d!\n", i);
+ hose->mem_resources[i].flags |= IORESOURCE_DISABLED;
+ } else
+ j += n;
+ }
/* Setup outbound IO window */
- if (hose->io_resource.flags & IORESOURCE_IO){
- pr_debug("PCI IO resource start 0x%08x, size 0x%08x, phy base 0x%08x.\n",
- hose->io_resource.start,
- hose->io_resource.end - hose->io_resource.start + 1,
- hose->io_base_phys);
- out_be32(&pci->pow[i+1].potar, (hose->io_resource.start >> 12)
- & 0x000fffff);
- out_be32(&pci->pow[i+1].potear, 0);
- out_be32(&pci->pow[i+1].powbar, (hose->io_base_phys >> 12)
- & 0x000fffff);
- /* Enable, IO R/W */
- out_be32(&pci->pow[i+1].powar, 0x80088000
- | (__ilog2(hose->io_resource.end
- - hose->io_resource.start + 1) - 1));
+ if (hose->io_resource.flags & IORESOURCE_IO) {
+ if (j >= 5) {
+ pr_err("Ran out of outbound PCI ATMUs for IO resource\n");
+ } else {
+ pr_debug("PCI IO resource start 0x%016llx, size 0x%016llx, "
+ "phy base 0x%016llx.\n",
+ (u64)hose->io_resource.start,
+ (u64)hose->io_resource.end - (u64)hose->io_resource.start + 1,
+ (u64)hose->io_base_phys);
+ out_be32(&pci->pow[j].potar, (hose->io_resource.start >> 12));
+ out_be32(&pci->pow[j].potear, 0);
+ out_be32(&pci->pow[j].powbar, (hose->io_base_phys >> 12));
+ /* Enable, IO R/W */
+ out_be32(&pci->pow[j].powar, 0x80088000
+ | (__ilog2(hose->io_resource.end
+ - hose->io_resource.start + 1) - 1));
+ }
+ }
+
+ /* convert to pci address space */
+ paddr_hi -= hose->pci_mem_offset;
+ paddr_lo -= hose->pci_mem_offset;
+
+ if (paddr_hi == paddr_lo) {
+ pr_err("%s: No outbound window space\n", name);
+ return ;
+ }
+
+ if (paddr_lo == 0) {
+ pr_err("%s: No space for inbound window\n", name);
+ return ;
}
- /* Setup 2G inbound Memory Window @ 1 */
- out_be32(&pci->piw[2].pitar, 0x00000000);
- out_be32(&pci->piw[2].piwbar,0x00000000);
- out_be32(&pci->piw[2].piwar, PIWAR_2G);
+ /* setup PCSRBAR/PEXCSRBAR */
+ early_write_config_dword(hose, 0, 0, PCI_BASE_ADDRESS_0, 0xffffffff);
+ early_read_config_dword(hose, 0, 0, PCI_BASE_ADDRESS_0, &pcicsrbar_sz);
+ pcicsrbar_sz = ~pcicsrbar_sz + 1;
+
+ if (paddr_hi < (0x100000000ull - pcicsrbar_sz) ||
+ (paddr_lo > 0x100000000ull))
+ pcicsrbar = 0x100000000ull - pcicsrbar_sz;
+ else
+ pcicsrbar = (paddr_lo - pcicsrbar_sz) & -pcicsrbar_sz;
+ early_write_config_dword(hose, 0, 0, PCI_BASE_ADDRESS_0, pcicsrbar);
+
+ paddr_lo = min(paddr_lo, (u64)pcicsrbar);
+
+ pr_info("%s: PCICSRBAR @ 0x%x\n", name, pcicsrbar);
+
+ /* Setup inbound mem window */
+ mem = lmb_end_of_DRAM();
+ sz = min(mem, paddr_lo);
+ mem_log = __ilog2_u64(sz);
+
+ /* PCIe can overmap inbound & outbound since RX & TX are separated */
+ if (early_find_capability(hose, 0, 0, PCI_CAP_ID_EXP)) {
+ /* Size window to exact size if power-of-two or one size up */
+ if ((1ull << mem_log) != mem) {
+ if ((1ull << mem_log) > mem)
+ pr_info("%s: Setting PCI inbound window "
+ "greater than memory size\n", name);
+ mem_log++;
+ }
+
+ piwar |= (mem_log - 1);
+
+ /* Setup inbound memory window */
+ out_be32(&pci->piw[win_idx].pitar, 0x00000000);
+ out_be32(&pci->piw[win_idx].piwbar, 0x00000000);
+ out_be32(&pci->piw[win_idx].piwar, piwar);
+ win_idx--;
+
+ hose->dma_window_base_cur = 0x00000000;
+ hose->dma_window_size = (resource_size_t)sz;
+ } else {
+ u64 paddr = 0;
+
+ /* Setup inbound memory window */
+ out_be32(&pci->piw[win_idx].pitar, paddr >> 12);
+ out_be32(&pci->piw[win_idx].piwbar, paddr >> 12);
+ out_be32(&pci->piw[win_idx].piwar, (piwar | (mem_log - 1)));
+ win_idx--;
+
+ paddr += 1ull << mem_log;
+ sz -= 1ull << mem_log;
+
+ if (sz) {
+ mem_log = __ilog2_u64(sz);
+ piwar |= (mem_log - 1);
+
+ out_be32(&pci->piw[win_idx].pitar, paddr >> 12);
+ out_be32(&pci->piw[win_idx].piwbar, paddr >> 12);
+ out_be32(&pci->piw[win_idx].piwar, piwar);
+ win_idx--;
+
+ paddr += 1ull << mem_log;
+ }
+
+ hose->dma_window_base_cur = 0x00000000;
+ hose->dma_window_size = (resource_size_t)paddr;
+ }
+
+ if (hose->dma_window_size < mem) {
+#ifndef CONFIG_SWIOTLB
+ pr_err("%s: ERROR: Memory size exceeds PCI ATMU ability to "
+ "map - enable CONFIG_SWIOTLB to avoid dma errors.\n",
+ name);
+#endif
+ /* adjusting outbound windows could reclaim space in mem map */
+ if (paddr_hi < 0xffffffffull)
+ pr_warning("%s: WARNING: Outbound window cfg leaves "
+ "gaps in memory map. Adjusting the memory map "
+ "could reduce unnecessary bounce buffering.\n",
+ name);
+
+ pr_info("%s: DMA window size is 0x%llx\n", name,
+ (u64)hose->dma_window_size);
+ }
+
+ iounmap(pci);
}
-void __init setup_pci_cmd(struct pci_controller *hose)
+static void __init setup_pci_cmd(struct pci_controller *hose)
{
u16 cmd;
int cap_x;
}
}
-static void __init quirk_fsl_pcie_transparent(struct pci_dev *dev)
-{
- struct resource *res;
- int i, res_idx = PCI_BRIDGE_RESOURCES;
- struct pci_controller *hose;
-
- /* if we aren't a PCIe don't bother */
- if (!pci_find_capability(dev, PCI_CAP_ID_EXP))
- return ;
-
- /*
- * Make the bridge be transparent.
- */
- dev->transparent = 1;
-
- hose = pci_bus_to_host(dev->bus);
- if (!hose) {
- printk(KERN_ERR "Can't find hose for bus %d\n",
- dev->bus->number);
- return;
- }
-
- /* Clear out any of the virtual P2P bridge registers */
- pci_write_config_word(dev, PCI_IO_BASE_UPPER16, 0);
- pci_write_config_word(dev, PCI_IO_LIMIT_UPPER16, 0);
- pci_write_config_byte(dev, PCI_IO_BASE, 0x10);
- pci_write_config_byte(dev, PCI_IO_LIMIT, 0);
- pci_write_config_word(dev, PCI_MEMORY_BASE, 0x10);
- pci_write_config_word(dev, PCI_MEMORY_LIMIT, 0);
- pci_write_config_word(dev, PCI_PREF_BASE_UPPER32, 0x0);
- pci_write_config_word(dev, PCI_PREF_LIMIT_UPPER32, 0x0);
- pci_write_config_word(dev, PCI_PREF_MEMORY_BASE, 0x10);
- pci_write_config_word(dev, PCI_PREF_MEMORY_LIMIT, 0);
-
- if (hose->io_resource.flags) {
- res = &dev->resource[res_idx++];
- res->start = hose->io_resource.start;
- res->end = hose->io_resource.end;
- res->flags = hose->io_resource.flags;
- update_bridge_resource(dev, res);
- }
-
- for (i = 0; i < 3; i++) {
- res = &dev->resource[res_idx + i];
- res->start = hose->mem_resources[i].start;
- res->end = hose->mem_resources[i].end;
- res->flags = hose->mem_resources[i].flags;
- update_bridge_resource(dev, res);
- }
-}
-
-int __init fsl_pcie_check_link(struct pci_controller *hose)
-{
- u16 val;
- early_read_config_word(hose, 0, 0, PCIE_LTSSM, &val);
- if (val < PCIE_LTSSM_L0)
- return 1;
- return 0;
-}
-
void fsl_pcibios_fixup_bus(struct pci_bus *bus)
{
- struct pci_controller *hose = (struct pci_controller *) bus->sysdata;
+ struct pci_controller *hose = pci_bus_to_host(bus);
int i;
- /* deal with bogus pci_bus when we don't have anything connected on PCIe */
- if (hose->indirect_type & PPC_INDIRECT_TYPE_NO_PCIE_LINK) {
- if (bus->parent) {
- for (i = 0; i < 4; ++i)
- bus->resource[i] = bus->parent->resource[i];
+ if ((bus->parent == hose->bus) &&
+ ((fsl_pcie_bus_fixup &&
+ early_find_capability(hose, 0, 0, PCI_CAP_ID_EXP)) ||
+ (hose->indirect_type & PPC_INDIRECT_TYPE_NO_PCIE_LINK)))
+ {
+ for (i = 0; i < 4; ++i) {
+ struct resource *res = bus->resource[i];
+ struct resource *par = bus->parent->resource[i];
+ if (res) {
+ res->start = 0;
+ res->end = 0;
+ res->flags = 0;
+ }
+ if (res && par) {
+ res->start = par->start;
+ res->end = par->end;
+ res->flags = par->flags;
+ }
}
}
}
printk(KERN_WARNING "Can't get bus-range for %s, assume"
" bus 0\n", dev->full_name);
- pci_assign_all_buses = 1;
+ ppc_pci_add_flags(PPC_PCI_REASSIGN_ALL_BUS);
hose = pcibios_alloc_controller(dev);
if (!hose)
return -ENOMEM;
hose->indirect_type |= PPC_INDIRECT_TYPE_NO_PCIE_LINK;
}
- printk(KERN_INFO "Found FSL PCI host bridge at 0x%016llx."
+ printk(KERN_INFO "Found FSL PCI host bridge at 0x%016llx. "
"Firmware bus number: %d->%d\n",
(unsigned long long)rsrc.start, hose->first_busno,
hose->last_busno);
return 0;
}
-DECLARE_PCI_FIXUP_EARLY(0x1957, PCI_DEVICE_ID_MPC8548E, quirk_fsl_pcie_transparent);
-DECLARE_PCI_FIXUP_EARLY(0x1957, PCI_DEVICE_ID_MPC8548, quirk_fsl_pcie_transparent);
-DECLARE_PCI_FIXUP_EARLY(0x1957, PCI_DEVICE_ID_MPC8543E, quirk_fsl_pcie_transparent);
-DECLARE_PCI_FIXUP_EARLY(0x1957, PCI_DEVICE_ID_MPC8543, quirk_fsl_pcie_transparent);
-DECLARE_PCI_FIXUP_EARLY(0x1957, PCI_DEVICE_ID_MPC8547E, quirk_fsl_pcie_transparent);
-DECLARE_PCI_FIXUP_EARLY(0x1957, PCI_DEVICE_ID_MPC8545E, quirk_fsl_pcie_transparent);
-DECLARE_PCI_FIXUP_EARLY(0x1957, PCI_DEVICE_ID_MPC8545, quirk_fsl_pcie_transparent);
-DECLARE_PCI_FIXUP_EARLY(0x1957, PCI_DEVICE_ID_MPC8568E, quirk_fsl_pcie_transparent);
-DECLARE_PCI_FIXUP_EARLY(0x1957, PCI_DEVICE_ID_MPC8568, quirk_fsl_pcie_transparent);
-DECLARE_PCI_FIXUP_EARLY(0x1957, PCI_DEVICE_ID_MPC8567E, quirk_fsl_pcie_transparent);
-DECLARE_PCI_FIXUP_EARLY(0x1957, PCI_DEVICE_ID_MPC8567, quirk_fsl_pcie_transparent);
-DECLARE_PCI_FIXUP_EARLY(0x1957, PCI_DEVICE_ID_MPC8544E, quirk_fsl_pcie_transparent);
-DECLARE_PCI_FIXUP_EARLY(0x1957, PCI_DEVICE_ID_MPC8544, quirk_fsl_pcie_transparent);
-DECLARE_PCI_FIXUP_EARLY(0x1957, PCI_DEVICE_ID_MPC8641, quirk_fsl_pcie_transparent);
-DECLARE_PCI_FIXUP_EARLY(0x1957, PCI_DEVICE_ID_MPC8641D, quirk_fsl_pcie_transparent);
+DECLARE_PCI_FIXUP_HEADER(0x1957, PCI_DEVICE_ID_MPC8548E, quirk_fsl_pcie_header);
+DECLARE_PCI_FIXUP_HEADER(0x1957, PCI_DEVICE_ID_MPC8548, quirk_fsl_pcie_header);
+DECLARE_PCI_FIXUP_HEADER(0x1957, PCI_DEVICE_ID_MPC8543E, quirk_fsl_pcie_header);
+DECLARE_PCI_FIXUP_HEADER(0x1957, PCI_DEVICE_ID_MPC8543, quirk_fsl_pcie_header);
+DECLARE_PCI_FIXUP_HEADER(0x1957, PCI_DEVICE_ID_MPC8547E, quirk_fsl_pcie_header);
+DECLARE_PCI_FIXUP_HEADER(0x1957, PCI_DEVICE_ID_MPC8545E, quirk_fsl_pcie_header);
+DECLARE_PCI_FIXUP_HEADER(0x1957, PCI_DEVICE_ID_MPC8545, quirk_fsl_pcie_header);
+DECLARE_PCI_FIXUP_HEADER(0x1957, PCI_DEVICE_ID_MPC8569E, quirk_fsl_pcie_header);
+DECLARE_PCI_FIXUP_HEADER(0x1957, PCI_DEVICE_ID_MPC8569, quirk_fsl_pcie_header);
+DECLARE_PCI_FIXUP_HEADER(0x1957, PCI_DEVICE_ID_MPC8568E, quirk_fsl_pcie_header);
+DECLARE_PCI_FIXUP_HEADER(0x1957, PCI_DEVICE_ID_MPC8568, quirk_fsl_pcie_header);
+DECLARE_PCI_FIXUP_HEADER(0x1957, PCI_DEVICE_ID_MPC8567E, quirk_fsl_pcie_header);
+DECLARE_PCI_FIXUP_HEADER(0x1957, PCI_DEVICE_ID_MPC8567, quirk_fsl_pcie_header);
+DECLARE_PCI_FIXUP_HEADER(0x1957, PCI_DEVICE_ID_MPC8533E, quirk_fsl_pcie_header);
+DECLARE_PCI_FIXUP_HEADER(0x1957, PCI_DEVICE_ID_MPC8533, quirk_fsl_pcie_header);
+DECLARE_PCI_FIXUP_HEADER(0x1957, PCI_DEVICE_ID_MPC8544E, quirk_fsl_pcie_header);
+DECLARE_PCI_FIXUP_HEADER(0x1957, PCI_DEVICE_ID_MPC8544, quirk_fsl_pcie_header);
+DECLARE_PCI_FIXUP_HEADER(0x1957, PCI_DEVICE_ID_MPC8572E, quirk_fsl_pcie_header);
+DECLARE_PCI_FIXUP_HEADER(0x1957, PCI_DEVICE_ID_MPC8572, quirk_fsl_pcie_header);
+DECLARE_PCI_FIXUP_HEADER(0x1957, PCI_DEVICE_ID_MPC8536E, quirk_fsl_pcie_header);
+DECLARE_PCI_FIXUP_HEADER(0x1957, PCI_DEVICE_ID_MPC8536, quirk_fsl_pcie_header);
+DECLARE_PCI_FIXUP_HEADER(0x1957, PCI_DEVICE_ID_MPC8641, quirk_fsl_pcie_header);
+DECLARE_PCI_FIXUP_HEADER(0x1957, PCI_DEVICE_ID_MPC8641D, quirk_fsl_pcie_header);
+DECLARE_PCI_FIXUP_HEADER(0x1957, PCI_DEVICE_ID_MPC8610, quirk_fsl_pcie_header);
+DECLARE_PCI_FIXUP_HEADER(0x1957, PCI_DEVICE_ID_P1011E, quirk_fsl_pcie_header);
+DECLARE_PCI_FIXUP_HEADER(0x1957, PCI_DEVICE_ID_P1011, quirk_fsl_pcie_header);
+DECLARE_PCI_FIXUP_HEADER(0x1957, PCI_DEVICE_ID_P1013E, quirk_fsl_pcie_header);
+DECLARE_PCI_FIXUP_HEADER(0x1957, PCI_DEVICE_ID_P1013, quirk_fsl_pcie_header);
+DECLARE_PCI_FIXUP_HEADER(0x1957, PCI_DEVICE_ID_P1020E, quirk_fsl_pcie_header);
+DECLARE_PCI_FIXUP_HEADER(0x1957, PCI_DEVICE_ID_P1020, quirk_fsl_pcie_header);
+DECLARE_PCI_FIXUP_HEADER(0x1957, PCI_DEVICE_ID_P1022E, quirk_fsl_pcie_header);
+DECLARE_PCI_FIXUP_HEADER(0x1957, PCI_DEVICE_ID_P1022, quirk_fsl_pcie_header);
+DECLARE_PCI_FIXUP_HEADER(0x1957, PCI_DEVICE_ID_P2010E, quirk_fsl_pcie_header);
+DECLARE_PCI_FIXUP_HEADER(0x1957, PCI_DEVICE_ID_P2010, quirk_fsl_pcie_header);
+DECLARE_PCI_FIXUP_HEADER(0x1957, PCI_DEVICE_ID_P2020E, quirk_fsl_pcie_header);
+DECLARE_PCI_FIXUP_HEADER(0x1957, PCI_DEVICE_ID_P2020, quirk_fsl_pcie_header);
+DECLARE_PCI_FIXUP_HEADER(0x1957, PCI_DEVICE_ID_P4040E, quirk_fsl_pcie_header);
+DECLARE_PCI_FIXUP_HEADER(0x1957, PCI_DEVICE_ID_P4040, quirk_fsl_pcie_header);
+DECLARE_PCI_FIXUP_HEADER(0x1957, PCI_DEVICE_ID_P4080E, quirk_fsl_pcie_header);
+DECLARE_PCI_FIXUP_HEADER(0x1957, PCI_DEVICE_ID_P4080, quirk_fsl_pcie_header);
+#endif /* CONFIG_FSL_SOC_BOOKE || CONFIG_PPC_86xx */
+
+#if defined(CONFIG_PPC_83xx) || defined(CONFIG_PPC_MPC512x)
+DECLARE_PCI_FIXUP_HEADER(0x1957, PCI_DEVICE_ID_MPC8314E, quirk_fsl_pcie_header);
+DECLARE_PCI_FIXUP_HEADER(0x1957, PCI_DEVICE_ID_MPC8314, quirk_fsl_pcie_header);
+DECLARE_PCI_FIXUP_HEADER(0x1957, PCI_DEVICE_ID_MPC8315E, quirk_fsl_pcie_header);
+DECLARE_PCI_FIXUP_HEADER(0x1957, PCI_DEVICE_ID_MPC8315, quirk_fsl_pcie_header);
+DECLARE_PCI_FIXUP_HEADER(0x1957, PCI_DEVICE_ID_MPC8377E, quirk_fsl_pcie_header);
+DECLARE_PCI_FIXUP_HEADER(0x1957, PCI_DEVICE_ID_MPC8377, quirk_fsl_pcie_header);
+DECLARE_PCI_FIXUP_HEADER(0x1957, PCI_DEVICE_ID_MPC8378E, quirk_fsl_pcie_header);
+DECLARE_PCI_FIXUP_HEADER(0x1957, PCI_DEVICE_ID_MPC8378, quirk_fsl_pcie_header);
+
+struct mpc83xx_pcie_priv {
+ void __iomem *cfg_type0;
+ void __iomem *cfg_type1;
+ u32 dev_base;
+};
+
+/*
+ * With the convention of u-boot, the PCIE outbound window 0 serves
+ * as configuration transactions outbound.
+ */
+#define PEX_OUTWIN0_BAR 0xCA4
+#define PEX_OUTWIN0_TAL 0xCA8
+#define PEX_OUTWIN0_TAH 0xCAC
+
+static int mpc83xx_pcie_exclude_device(struct pci_bus *bus, unsigned int devfn)
+{
+ struct pci_controller *hose = pci_bus_to_host(bus);
+
+ if (hose->indirect_type & PPC_INDIRECT_TYPE_NO_PCIE_LINK)
+ return PCIBIOS_DEVICE_NOT_FOUND;
+ /*
+ * Workaround for the HW bug: for Type 0 configure transactions the
+ * PCI-E controller does not check the device number bits and just
+ * assumes that the device number bits are 0.
+ */
+ if (bus->number == hose->first_busno ||
+ bus->primary == hose->first_busno) {
+ if (devfn & 0xf8)
+ return PCIBIOS_DEVICE_NOT_FOUND;
+ }
+
+ if (ppc_md.pci_exclude_device) {
+ if (ppc_md.pci_exclude_device(hose, bus->number, devfn))
+ return PCIBIOS_DEVICE_NOT_FOUND;
+ }
+
+ return PCIBIOS_SUCCESSFUL;
+}
+
+static void __iomem *mpc83xx_pcie_remap_cfg(struct pci_bus *bus,
+ unsigned int devfn, int offset)
+{
+ struct pci_controller *hose = pci_bus_to_host(bus);
+ struct mpc83xx_pcie_priv *pcie = hose->dn->data;
+ u32 dev_base = bus->number << 24 | devfn << 16;
+ int ret;
+
+ ret = mpc83xx_pcie_exclude_device(bus, devfn);
+ if (ret)
+ return NULL;
+
+ offset &= 0xfff;
+
+ /* Type 0 */
+ if (bus->number == hose->first_busno)
+ return pcie->cfg_type0 + offset;
+
+ if (pcie->dev_base == dev_base)
+ goto mapped;
+
+ out_le32(pcie->cfg_type0 + PEX_OUTWIN0_TAL, dev_base);
+
+ pcie->dev_base = dev_base;
+mapped:
+ return pcie->cfg_type1 + offset;
+}
+
+static int mpc83xx_pcie_read_config(struct pci_bus *bus, unsigned int devfn,
+ int offset, int len, u32 *val)
+{
+ void __iomem *cfg_addr;
+
+ cfg_addr = mpc83xx_pcie_remap_cfg(bus, devfn, offset);
+ if (!cfg_addr)
+ return PCIBIOS_DEVICE_NOT_FOUND;
+
+ switch (len) {
+ case 1:
+ *val = in_8(cfg_addr);
+ break;
+ case 2:
+ *val = in_le16(cfg_addr);
+ break;
+ default:
+ *val = in_le32(cfg_addr);
+ break;
+ }
+
+ return PCIBIOS_SUCCESSFUL;
+}
+
+static int mpc83xx_pcie_write_config(struct pci_bus *bus, unsigned int devfn,
+ int offset, int len, u32 val)
+{
+ struct pci_controller *hose = pci_bus_to_host(bus);
+ void __iomem *cfg_addr;
+
+ cfg_addr = mpc83xx_pcie_remap_cfg(bus, devfn, offset);
+ if (!cfg_addr)
+ return PCIBIOS_DEVICE_NOT_FOUND;
+
+ /* PPC_INDIRECT_TYPE_SURPRESS_PRIMARY_BUS */
+ if (offset == PCI_PRIMARY_BUS && bus->number == hose->first_busno)
+ val &= 0xffffff00;
+
+ switch (len) {
+ case 1:
+ out_8(cfg_addr, val);
+ break;
+ case 2:
+ out_le16(cfg_addr, val);
+ break;
+ default:
+ out_le32(cfg_addr, val);
+ break;
+ }
+
+ return PCIBIOS_SUCCESSFUL;
+}
+
+static struct pci_ops mpc83xx_pcie_ops = {
+ .read = mpc83xx_pcie_read_config,
+ .write = mpc83xx_pcie_write_config,
+};
+
+static int __init mpc83xx_pcie_setup(struct pci_controller *hose,
+ struct resource *reg)
+{
+ struct mpc83xx_pcie_priv *pcie;
+ u32 cfg_bar;
+ int ret = -ENOMEM;
+
+ pcie = zalloc_maybe_bootmem(sizeof(*pcie), GFP_KERNEL);
+ if (!pcie)
+ return ret;
+
+ pcie->cfg_type0 = ioremap(reg->start, resource_size(reg));
+ if (!pcie->cfg_type0)
+ goto err0;
+
+ cfg_bar = in_le32(pcie->cfg_type0 + PEX_OUTWIN0_BAR);
+ if (!cfg_bar) {
+ /* PCI-E isn't configured. */
+ ret = -ENODEV;
+ goto err1;
+ }
+
+ pcie->cfg_type1 = ioremap(cfg_bar, 0x1000);
+ if (!pcie->cfg_type1)
+ goto err1;
+
+ WARN_ON(hose->dn->data);
+ hose->dn->data = pcie;
+ hose->ops = &mpc83xx_pcie_ops;
+
+ out_le32(pcie->cfg_type0 + PEX_OUTWIN0_TAH, 0);
+ out_le32(pcie->cfg_type0 + PEX_OUTWIN0_TAL, 0);
+
+ if (fsl_pcie_check_link(hose))
+ hose->indirect_type |= PPC_INDIRECT_TYPE_NO_PCIE_LINK;
+
+ return 0;
+err1:
+ iounmap(pcie->cfg_type0);
+err0:
+ kfree(pcie);
+ return ret;
+
+}
+
+int __init mpc83xx_add_bridge(struct device_node *dev)
+{
+ int ret;
+ int len;
+ struct pci_controller *hose;
+ struct resource rsrc_reg;
+ struct resource rsrc_cfg;
+ const int *bus_range;
+ int primary;
+
+ if (!of_device_is_available(dev)) {
+ pr_warning("%s: disabled by the firmware.\n",
+ dev->full_name);
+ return -ENODEV;
+ }
+ pr_debug("Adding PCI host bridge %s\n", dev->full_name);
+
+ /* Fetch host bridge registers address */
+ if (of_address_to_resource(dev, 0, &rsrc_reg)) {
+ printk(KERN_WARNING "Can't get pci register base!\n");
+ return -ENOMEM;
+ }
+
+ memset(&rsrc_cfg, 0, sizeof(rsrc_cfg));
+
+ if (of_address_to_resource(dev, 1, &rsrc_cfg)) {
+ printk(KERN_WARNING
+ "No pci config register base in dev tree, "
+ "using default\n");
+ /*
+ * MPC83xx supports up to two host controllers
+ * one at 0x8500 has config space registers at 0x8300
+ * one at 0x8600 has config space registers at 0x8380
+ */
+ if ((rsrc_reg.start & 0xfffff) == 0x8500)
+ rsrc_cfg.start = (rsrc_reg.start & 0xfff00000) + 0x8300;
+ else if ((rsrc_reg.start & 0xfffff) == 0x8600)
+ rsrc_cfg.start = (rsrc_reg.start & 0xfff00000) + 0x8380;
+ }
+ /*
+ * Controller at offset 0x8500 is primary
+ */
+ if ((rsrc_reg.start & 0xfffff) == 0x8500)
+ primary = 1;
+ else
+ primary = 0;
+
+ /* Get bus range if any */
+ bus_range = of_get_property(dev, "bus-range", &len);
+ if (bus_range == NULL || len < 2 * sizeof(int)) {
+ printk(KERN_WARNING "Can't get bus-range for %s, assume"
+ " bus 0\n", dev->full_name);
+ }
+
+ ppc_pci_add_flags(PPC_PCI_REASSIGN_ALL_BUS);
+ hose = pcibios_alloc_controller(dev);
+ if (!hose)
+ return -ENOMEM;
+
+ hose->first_busno = bus_range ? bus_range[0] : 0;
+ hose->last_busno = bus_range ? bus_range[1] : 0xff;
+
+ if (of_device_is_compatible(dev, "fsl,mpc8314-pcie")) {
+ ret = mpc83xx_pcie_setup(hose, &rsrc_reg);
+ if (ret)
+ goto err0;
+ } else {
+ setup_indirect_pci(hose, rsrc_cfg.start,
+ rsrc_cfg.start + 4, 0);
+ }
+
+ printk(KERN_INFO "Found FSL PCI host bridge at 0x%016llx. "
+ "Firmware bus number: %d->%d\n",
+ (unsigned long long)rsrc_reg.start, hose->first_busno,
+ hose->last_busno);
+
+ pr_debug(" ->Hose at 0x%p, cfg_addr=0x%p,cfg_data=0x%p\n",
+ hose, hose->cfg_addr, hose->cfg_data);
+
+ /* Interpret the "ranges" property */
+ /* This also maps the I/O region and sets isa_io/mem_base */
+ pci_process_bridge_OF_ranges(hose, dev, primary);
+
+ return 0;
+err0:
+ pcibios_free_controller(hose);
+ return ret;
+}
+#endif /* CONFIG_PPC_83xx */
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff