else
obj-$(CONFIG_PCI) += pci.o
endif
-obj-$(CONFIG_PCI) += pci_common.o pci_auto.o pci_rom.o
+obj-$(CONFIG_PCI) += pci_common.o pci_auto_old.o pci_rom.o
obj-$(CONFIG_FSL_PCI_INIT) += fsl_pci_init.o
obj-$(CONFIG_PCI_INDIRECT_BRIDGE) += pci_indirect.o
+++ /dev/null
-/*
- * arch/powerpc/kernel/pci_auto.c
- *
- * PCI autoconfiguration library
- *
- * Author: Matt Porter <mporter@mvista.com>
- *
- * Copyright 2000 MontaVista Software Inc.
- *
- * SPDX-License-Identifier: GPL-2.0+
- */
-
-#include <common.h>
-#include <errno.h>
-#include <pci.h>
-
-/* the user can define CONFIG_SYS_PCI_CACHE_LINE_SIZE to avoid problems */
-#ifndef CONFIG_SYS_PCI_CACHE_LINE_SIZE
-#define CONFIG_SYS_PCI_CACHE_LINE_SIZE 8
-#endif
-
-/*
- *
- */
-
-void pciauto_region_init(struct pci_region *res)
-{
- /*
- * Avoid allocating PCI resources from address 0 -- this is illegal
- * according to PCI 2.1 and moreover, this is known to cause Linux IDE
- * drivers to fail. Use a reasonable starting value of 0x1000 instead.
- */
- res->bus_lower = res->bus_start ? res->bus_start : 0x1000;
-}
-
-void pciauto_region_align(struct pci_region *res, pci_size_t size)
-{
- res->bus_lower = ((res->bus_lower - 1) | (size - 1)) + 1;
-}
-
-int pciauto_region_allocate(struct pci_region *res, pci_size_t size,
- pci_addr_t *bar)
-{
- pci_addr_t addr;
-
- if (!res) {
- debug("No resource");
- goto error;
- }
-
- addr = ((res->bus_lower - 1) | (size - 1)) + 1;
-
- if (addr - res->bus_start + size > res->size) {
- debug("No room in resource");
- goto error;
- }
-
- res->bus_lower = addr + size;
-
- debug("address=0x%llx bus_lower=0x%llx", (unsigned long long)addr,
- (unsigned long long)res->bus_lower);
-
- *bar = addr;
- return 0;
-
- error:
- *bar = (pci_addr_t)-1;
- return -1;
-}
-
-/*
- *
- */
-
-void pciauto_setup_device(struct pci_controller *hose,
- pci_dev_t dev, int bars_num,
- struct pci_region *mem,
- struct pci_region *prefetch,
- struct pci_region *io)
-{
- u32 bar_response;
- pci_size_t bar_size;
- u16 cmdstat = 0;
- int bar, bar_nr = 0;
-#ifndef CONFIG_PCI_ENUM_ONLY
- u8 header_type;
- int rom_addr;
- pci_addr_t bar_value;
- struct pci_region *bar_res;
- int found_mem64 = 0;
-#endif
- u16 class;
-
- pci_hose_read_config_word(hose, dev, PCI_COMMAND, &cmdstat);
- cmdstat = (cmdstat & ~(PCI_COMMAND_IO | PCI_COMMAND_MEMORY)) | PCI_COMMAND_MASTER;
-
- for (bar = PCI_BASE_ADDRESS_0;
- bar < PCI_BASE_ADDRESS_0 + (bars_num * 4); bar += 4) {
- /* Tickle the BAR and get the response */
-#ifndef CONFIG_PCI_ENUM_ONLY
- pci_hose_write_config_dword(hose, dev, bar, 0xffffffff);
-#endif
- pci_hose_read_config_dword(hose, dev, bar, &bar_response);
-
- /* If BAR is not implemented go to the next BAR */
- if (!bar_response)
- continue;
-
-#ifndef CONFIG_PCI_ENUM_ONLY
- found_mem64 = 0;
-#endif
-
- /* Check the BAR type and set our address mask */
- if (bar_response & PCI_BASE_ADDRESS_SPACE) {
- bar_size = ((~(bar_response & PCI_BASE_ADDRESS_IO_MASK))
- & 0xffff) + 1;
-#ifndef CONFIG_PCI_ENUM_ONLY
- bar_res = io;
-#endif
-
- debug("PCI Autoconfig: BAR %d, I/O, size=0x%llx, ",
- bar_nr, (unsigned long long)bar_size);
- } else {
- if ((bar_response & PCI_BASE_ADDRESS_MEM_TYPE_MASK) ==
- PCI_BASE_ADDRESS_MEM_TYPE_64) {
- u32 bar_response_upper;
- u64 bar64;
-
-#ifndef CONFIG_PCI_ENUM_ONLY
- pci_hose_write_config_dword(hose, dev, bar + 4,
- 0xffffffff);
-#endif
- pci_hose_read_config_dword(hose, dev, bar + 4,
- &bar_response_upper);
-
- bar64 = ((u64)bar_response_upper << 32) | bar_response;
-
- bar_size = ~(bar64 & PCI_BASE_ADDRESS_MEM_MASK) + 1;
-#ifndef CONFIG_PCI_ENUM_ONLY
- found_mem64 = 1;
-#endif
- } else {
- bar_size = (u32)(~(bar_response & PCI_BASE_ADDRESS_MEM_MASK) + 1);
- }
-#ifndef CONFIG_PCI_ENUM_ONLY
- if (prefetch && (bar_response & PCI_BASE_ADDRESS_MEM_PREFETCH))
- bar_res = prefetch;
- else
- bar_res = mem;
-#endif
-
- debug("PCI Autoconfig: BAR %d, %s, size=0x%llx, ",
- bar_nr, bar_res == prefetch ? "Prf" : "Mem",
- (unsigned long long)bar_size);
- }
-
-#ifndef CONFIG_PCI_ENUM_ONLY
- if (pciauto_region_allocate(bar_res, bar_size, &bar_value) == 0) {
- /* Write it out and update our limit */
- pci_hose_write_config_dword(hose, dev, bar, (u32)bar_value);
-
- if (found_mem64) {
- bar += 4;
-#ifdef CONFIG_SYS_PCI_64BIT
- pci_hose_write_config_dword(hose, dev, bar, (u32)(bar_value>>32));
-#else
- /*
- * If we are a 64-bit decoder then increment to the
- * upper 32 bits of the bar and force it to locate
- * in the lower 4GB of memory.
- */
- pci_hose_write_config_dword(hose, dev, bar, 0x00000000);
-#endif
- }
-
- }
-#endif
- cmdstat |= (bar_response & PCI_BASE_ADDRESS_SPACE) ?
- PCI_COMMAND_IO : PCI_COMMAND_MEMORY;
-
- debug("\n");
-
- bar_nr++;
- }
-
-#ifndef CONFIG_PCI_ENUM_ONLY
- /* Configure the expansion ROM address */
- pci_hose_read_config_byte(hose, dev, PCI_HEADER_TYPE, &header_type);
- header_type &= 0x7f;
- if (header_type != PCI_HEADER_TYPE_CARDBUS) {
- rom_addr = (header_type == PCI_HEADER_TYPE_NORMAL) ?
- PCI_ROM_ADDRESS : PCI_ROM_ADDRESS1;
- pci_hose_write_config_dword(hose, dev, rom_addr, 0xfffffffe);
- pci_hose_read_config_dword(hose, dev, rom_addr, &bar_response);
- if (bar_response) {
- bar_size = -(bar_response & ~1);
- debug("PCI Autoconfig: ROM, size=%#x, ",
- (unsigned int)bar_size);
- if (pciauto_region_allocate(mem, bar_size,
- &bar_value) == 0) {
- pci_hose_write_config_dword(hose, dev, rom_addr,
- bar_value);
- }
- cmdstat |= PCI_COMMAND_MEMORY;
- debug("\n");
- }
- }
-#endif
-
- /* PCI_COMMAND_IO must be set for VGA device */
- pci_hose_read_config_word(hose, dev, PCI_CLASS_DEVICE, &class);
- if (class == PCI_CLASS_DISPLAY_VGA)
- cmdstat |= PCI_COMMAND_IO;
-
- pci_hose_write_config_word(hose, dev, PCI_COMMAND, cmdstat);
- pci_hose_write_config_byte(hose, dev, PCI_CACHE_LINE_SIZE,
- CONFIG_SYS_PCI_CACHE_LINE_SIZE);
- pci_hose_write_config_byte(hose, dev, PCI_LATENCY_TIMER, 0x80);
-}
-
-void pciauto_prescan_setup_bridge(struct pci_controller *hose,
- pci_dev_t dev, int sub_bus)
-{
- struct pci_region *pci_mem;
- struct pci_region *pci_prefetch;
- struct pci_region *pci_io;
- u16 cmdstat, prefechable_64;
-
-#ifdef CONFIG_DM_PCI
- /* The root controller has the region information */
- struct pci_controller *ctlr_hose = pci_bus_to_hose(0);
-
- pci_mem = ctlr_hose->pci_mem;
- pci_prefetch = ctlr_hose->pci_prefetch;
- pci_io = ctlr_hose->pci_io;
-#else
- pci_mem = hose->pci_mem;
- pci_prefetch = hose->pci_prefetch;
- pci_io = hose->pci_io;
-#endif
-
- pci_hose_read_config_word(hose, dev, PCI_COMMAND, &cmdstat);
- pci_hose_read_config_word(hose, dev, PCI_PREF_MEMORY_BASE,
- &prefechable_64);
- prefechable_64 &= PCI_PREF_RANGE_TYPE_MASK;
-
- /* Configure bus number registers */
-#ifdef CONFIG_DM_PCI
- pci_hose_write_config_byte(hose, dev, PCI_PRIMARY_BUS, PCI_BUS(dev));
- pci_hose_write_config_byte(hose, dev, PCI_SECONDARY_BUS, sub_bus);
-#else
- pci_hose_write_config_byte(hose, dev, PCI_PRIMARY_BUS,
- PCI_BUS(dev) - hose->first_busno);
- pci_hose_write_config_byte(hose, dev, PCI_SECONDARY_BUS,
- sub_bus - hose->first_busno);
-#endif
- pci_hose_write_config_byte(hose, dev, PCI_SUBORDINATE_BUS, 0xff);
-
- if (pci_mem) {
- /* Round memory allocator to 1MB boundary */
- pciauto_region_align(pci_mem, 0x100000);
-
- /* Set up memory and I/O filter limits, assume 32-bit I/O space */
- pci_hose_write_config_word(hose, dev, PCI_MEMORY_BASE,
- (pci_mem->bus_lower & 0xfff00000) >> 16);
-
- cmdstat |= PCI_COMMAND_MEMORY;
- }
-
- if (pci_prefetch) {
- /* Round memory allocator to 1MB boundary */
- pciauto_region_align(pci_prefetch, 0x100000);
-
- /* Set up memory and I/O filter limits, assume 32-bit I/O space */
- pci_hose_write_config_word(hose, dev, PCI_PREF_MEMORY_BASE,
- (pci_prefetch->bus_lower & 0xfff00000) >> 16);
- if (prefechable_64 == PCI_PREF_RANGE_TYPE_64)
-#ifdef CONFIG_SYS_PCI_64BIT
- pci_hose_write_config_dword(hose, dev,
- PCI_PREF_BASE_UPPER32,
- pci_prefetch->bus_lower >> 32);
-#else
- pci_hose_write_config_dword(hose, dev,
- PCI_PREF_BASE_UPPER32,
- 0x0);
-#endif
-
- cmdstat |= PCI_COMMAND_MEMORY;
- } else {
- /* We don't support prefetchable memory for now, so disable */
- pci_hose_write_config_word(hose, dev, PCI_PREF_MEMORY_BASE, 0x1000);
- pci_hose_write_config_word(hose, dev, PCI_PREF_MEMORY_LIMIT, 0x0);
- if (prefechable_64 == PCI_PREF_RANGE_TYPE_64) {
- pci_hose_write_config_word(hose, dev, PCI_PREF_BASE_UPPER32, 0x0);
- pci_hose_write_config_word(hose, dev, PCI_PREF_LIMIT_UPPER32, 0x0);
- }
- }
-
- if (pci_io) {
- /* Round I/O allocator to 4KB boundary */
- pciauto_region_align(pci_io, 0x1000);
-
- pci_hose_write_config_byte(hose, dev, PCI_IO_BASE,
- (pci_io->bus_lower & 0x0000f000) >> 8);
- pci_hose_write_config_word(hose, dev, PCI_IO_BASE_UPPER16,
- (pci_io->bus_lower & 0xffff0000) >> 16);
-
- cmdstat |= PCI_COMMAND_IO;
- }
-
- /* Enable memory and I/O accesses, enable bus master */
- pci_hose_write_config_word(hose, dev, PCI_COMMAND,
- cmdstat | PCI_COMMAND_MASTER);
-}
-
-void pciauto_postscan_setup_bridge(struct pci_controller *hose,
- pci_dev_t dev, int sub_bus)
-{
- struct pci_region *pci_mem;
- struct pci_region *pci_prefetch;
- struct pci_region *pci_io;
-
-#ifdef CONFIG_DM_PCI
- /* The root controller has the region information */
- struct pci_controller *ctlr_hose = pci_bus_to_hose(0);
-
- pci_mem = ctlr_hose->pci_mem;
- pci_prefetch = ctlr_hose->pci_prefetch;
- pci_io = ctlr_hose->pci_io;
-#else
- pci_mem = hose->pci_mem;
- pci_prefetch = hose->pci_prefetch;
- pci_io = hose->pci_io;
-#endif
-
- /* Configure bus number registers */
-#ifdef CONFIG_DM_PCI
- pci_hose_write_config_byte(hose, dev, PCI_SUBORDINATE_BUS, sub_bus);
-#else
- pci_hose_write_config_byte(hose, dev, PCI_SUBORDINATE_BUS,
- sub_bus - hose->first_busno);
-#endif
-
- if (pci_mem) {
- /* Round memory allocator to 1MB boundary */
- pciauto_region_align(pci_mem, 0x100000);
-
- pci_hose_write_config_word(hose, dev, PCI_MEMORY_LIMIT,
- (pci_mem->bus_lower - 1) >> 16);
- }
-
- if (pci_prefetch) {
- u16 prefechable_64;
-
- pci_hose_read_config_word(hose, dev,
- PCI_PREF_MEMORY_LIMIT,
- &prefechable_64);
- prefechable_64 &= PCI_PREF_RANGE_TYPE_MASK;
-
- /* Round memory allocator to 1MB boundary */
- pciauto_region_align(pci_prefetch, 0x100000);
-
- pci_hose_write_config_word(hose, dev, PCI_PREF_MEMORY_LIMIT,
- (pci_prefetch->bus_lower - 1) >> 16);
- if (prefechable_64 == PCI_PREF_RANGE_TYPE_64)
-#ifdef CONFIG_SYS_PCI_64BIT
- pci_hose_write_config_dword(hose, dev,
- PCI_PREF_LIMIT_UPPER32,
- (pci_prefetch->bus_lower - 1) >> 32);
-#else
- pci_hose_write_config_dword(hose, dev,
- PCI_PREF_LIMIT_UPPER32,
- 0x0);
-#endif
- }
-
- if (pci_io) {
- /* Round I/O allocator to 4KB boundary */
- pciauto_region_align(pci_io, 0x1000);
-
- pci_hose_write_config_byte(hose, dev, PCI_IO_LIMIT,
- ((pci_io->bus_lower - 1) & 0x0000f000) >> 8);
- pci_hose_write_config_word(hose, dev, PCI_IO_LIMIT_UPPER16,
- ((pci_io->bus_lower - 1) & 0xffff0000) >> 16);
- }
-}
-
-/*
- *
- */
-
-void pciauto_config_init(struct pci_controller *hose)
-{
- int i;
-
- hose->pci_io = hose->pci_mem = hose->pci_prefetch = NULL;
-
- for (i = 0; i < hose->region_count; i++) {
- switch(hose->regions[i].flags) {
- case PCI_REGION_IO:
- if (!hose->pci_io ||
- hose->pci_io->size < hose->regions[i].size)
- hose->pci_io = hose->regions + i;
- break;
- case PCI_REGION_MEM:
- if (!hose->pci_mem ||
- hose->pci_mem->size < hose->regions[i].size)
- hose->pci_mem = hose->regions + i;
- break;
- case (PCI_REGION_MEM | PCI_REGION_PREFETCH):
- if (!hose->pci_prefetch ||
- hose->pci_prefetch->size < hose->regions[i].size)
- hose->pci_prefetch = hose->regions + i;
- break;
- }
- }
-
-
- if (hose->pci_mem) {
- pciauto_region_init(hose->pci_mem);
-
- debug("PCI Autoconfig: Bus Memory region: [0x%llx-0x%llx],\n"
- "\t\tPhysical Memory [%llx-%llxx]\n",
- (u64)hose->pci_mem->bus_start,
- (u64)(hose->pci_mem->bus_start + hose->pci_mem->size - 1),
- (u64)hose->pci_mem->phys_start,
- (u64)(hose->pci_mem->phys_start + hose->pci_mem->size - 1));
- }
-
- if (hose->pci_prefetch) {
- pciauto_region_init(hose->pci_prefetch);
-
- debug("PCI Autoconfig: Bus Prefetchable Mem: [0x%llx-0x%llx],\n"
- "\t\tPhysical Memory [%llx-%llx]\n",
- (u64)hose->pci_prefetch->bus_start,
- (u64)(hose->pci_prefetch->bus_start +
- hose->pci_prefetch->size - 1),
- (u64)hose->pci_prefetch->phys_start,
- (u64)(hose->pci_prefetch->phys_start +
- hose->pci_prefetch->size - 1));
- }
-
- if (hose->pci_io) {
- pciauto_region_init(hose->pci_io);
-
- debug("PCI Autoconfig: Bus I/O region: [0x%llx-0x%llx],\n"
- "\t\tPhysical Memory: [%llx-%llx]\n",
- (u64)hose->pci_io->bus_start,
- (u64)(hose->pci_io->bus_start + hose->pci_io->size - 1),
- (u64)hose->pci_io->phys_start,
- (u64)(hose->pci_io->phys_start + hose->pci_io->size - 1));
-
- }
-}
-
-/*
- * HJF: Changed this to return int. I think this is required
- * to get the correct result when scanning bridges
- */
-int pciauto_config_device(struct pci_controller *hose, pci_dev_t dev)
-{
- struct pci_region *pci_mem;
- struct pci_region *pci_prefetch;
- struct pci_region *pci_io;
- unsigned int sub_bus = PCI_BUS(dev);
- unsigned short class;
- int n;
-
-#ifdef CONFIG_DM_PCI
- /* The root controller has the region information */
- struct pci_controller *ctlr_hose = pci_bus_to_hose(0);
-
- pci_mem = ctlr_hose->pci_mem;
- pci_prefetch = ctlr_hose->pci_prefetch;
- pci_io = ctlr_hose->pci_io;
-#else
- pci_mem = hose->pci_mem;
- pci_prefetch = hose->pci_prefetch;
- pci_io = hose->pci_io;
-#endif
-
- pci_hose_read_config_word(hose, dev, PCI_CLASS_DEVICE, &class);
-
- switch (class) {
- case PCI_CLASS_BRIDGE_PCI:
- debug("PCI Autoconfig: Found P2P bridge, device %d\n",
- PCI_DEV(dev));
-
- pciauto_setup_device(hose, dev, 2, pci_mem,
- pci_prefetch, pci_io);
-
-#ifdef CONFIG_DM_PCI
- n = dm_pci_hose_probe_bus(hose, dev);
- if (n < 0)
- return n;
- sub_bus = (unsigned int)n;
-#else
- /* Passing in current_busno allows for sibling P2P bridges */
- hose->current_busno++;
- pciauto_prescan_setup_bridge(hose, dev, hose->current_busno);
- /*
- * need to figure out if this is a subordinate bridge on the bus
- * to be able to properly set the pri/sec/sub bridge registers.
- */
- n = pci_hose_scan_bus(hose, hose->current_busno);
-
- /* figure out the deepest we've gone for this leg */
- sub_bus = max((unsigned int)n, sub_bus);
- pciauto_postscan_setup_bridge(hose, dev, sub_bus);
-
- sub_bus = hose->current_busno;
-#endif
- break;
-
- case PCI_CLASS_BRIDGE_CARDBUS:
- /*
- * just do a minimal setup of the bridge,
- * let the OS take care of the rest
- */
- pciauto_setup_device(hose, dev, 0, pci_mem,
- pci_prefetch, pci_io);
-
- debug("PCI Autoconfig: Found P2CardBus bridge, device %d\n",
- PCI_DEV(dev));
-
-#ifndef CONFIG_DM_PCI
- hose->current_busno++;
-#endif
- break;
-
-#if defined(CONFIG_PCIAUTO_SKIP_HOST_BRIDGE)
- case PCI_CLASS_BRIDGE_OTHER:
- debug("PCI Autoconfig: Skipping bridge device %d\n",
- PCI_DEV(dev));
- break;
-#endif
-#if defined(CONFIG_MPC834x) && !defined(CONFIG_VME8349)
- case PCI_CLASS_BRIDGE_OTHER:
- /*
- * The host/PCI bridge 1 seems broken in 8349 - it presents
- * itself as 'PCI_CLASS_BRIDGE_OTHER' and appears as an _agent_
- * device claiming resources io/mem/irq.. we only allow for
- * the PIMMR window to be allocated (BAR0 - 1MB size)
- */
- debug("PCI Autoconfig: Broken bridge found, only minimal config\n");
- pciauto_setup_device(hose, dev, 0, hose->pci_mem,
- hose->pci_prefetch, hose->pci_io);
- break;
-#endif
-
- case PCI_CLASS_PROCESSOR_POWERPC: /* an agent or end-point */
- debug("PCI AutoConfig: Found PowerPC device\n");
-
- default:
- pciauto_setup_device(hose, dev, 6, pci_mem,
- pci_prefetch, pci_io);
- break;
- }
-
- return sub_bus;
-}
--- /dev/null
+/*
+ * arch/powerpc/kernel/pci_auto.c
+ *
+ * PCI autoconfiguration library
+ *
+ * Author: Matt Porter <mporter@mvista.com>
+ *
+ * Copyright 2000 MontaVista Software Inc.
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <errno.h>
+#include <pci.h>
+
+/* the user can define CONFIG_SYS_PCI_CACHE_LINE_SIZE to avoid problems */
+#ifndef CONFIG_SYS_PCI_CACHE_LINE_SIZE
+#define CONFIG_SYS_PCI_CACHE_LINE_SIZE 8
+#endif
+
+/*
+ *
+ */
+
+void pciauto_region_init(struct pci_region *res)
+{
+ /*
+ * Avoid allocating PCI resources from address 0 -- this is illegal
+ * according to PCI 2.1 and moreover, this is known to cause Linux IDE
+ * drivers to fail. Use a reasonable starting value of 0x1000 instead.
+ */
+ res->bus_lower = res->bus_start ? res->bus_start : 0x1000;
+}
+
+void pciauto_region_align(struct pci_region *res, pci_size_t size)
+{
+ res->bus_lower = ((res->bus_lower - 1) | (size - 1)) + 1;
+}
+
+int pciauto_region_allocate(struct pci_region *res, pci_size_t size,
+ pci_addr_t *bar)
+{
+ pci_addr_t addr;
+
+ if (!res) {
+ debug("No resource");
+ goto error;
+ }
+
+ addr = ((res->bus_lower - 1) | (size - 1)) + 1;
+
+ if (addr - res->bus_start + size > res->size) {
+ debug("No room in resource");
+ goto error;
+ }
+
+ res->bus_lower = addr + size;
+
+ debug("address=0x%llx bus_lower=0x%llx", (unsigned long long)addr,
+ (unsigned long long)res->bus_lower);
+
+ *bar = addr;
+ return 0;
+
+ error:
+ *bar = (pci_addr_t)-1;
+ return -1;
+}
+
+/*
+ *
+ */
+
+void pciauto_setup_device(struct pci_controller *hose,
+ pci_dev_t dev, int bars_num,
+ struct pci_region *mem,
+ struct pci_region *prefetch,
+ struct pci_region *io)
+{
+ u32 bar_response;
+ pci_size_t bar_size;
+ u16 cmdstat = 0;
+ int bar, bar_nr = 0;
+#ifndef CONFIG_PCI_ENUM_ONLY
+ u8 header_type;
+ int rom_addr;
+ pci_addr_t bar_value;
+ struct pci_region *bar_res;
+ int found_mem64 = 0;
+#endif
+ u16 class;
+
+ pci_hose_read_config_word(hose, dev, PCI_COMMAND, &cmdstat);
+ cmdstat = (cmdstat & ~(PCI_COMMAND_IO | PCI_COMMAND_MEMORY)) | PCI_COMMAND_MASTER;
+
+ for (bar = PCI_BASE_ADDRESS_0;
+ bar < PCI_BASE_ADDRESS_0 + (bars_num * 4); bar += 4) {
+ /* Tickle the BAR and get the response */
+#ifndef CONFIG_PCI_ENUM_ONLY
+ pci_hose_write_config_dword(hose, dev, bar, 0xffffffff);
+#endif
+ pci_hose_read_config_dword(hose, dev, bar, &bar_response);
+
+ /* If BAR is not implemented go to the next BAR */
+ if (!bar_response)
+ continue;
+
+#ifndef CONFIG_PCI_ENUM_ONLY
+ found_mem64 = 0;
+#endif
+
+ /* Check the BAR type and set our address mask */
+ if (bar_response & PCI_BASE_ADDRESS_SPACE) {
+ bar_size = ((~(bar_response & PCI_BASE_ADDRESS_IO_MASK))
+ & 0xffff) + 1;
+#ifndef CONFIG_PCI_ENUM_ONLY
+ bar_res = io;
+#endif
+
+ debug("PCI Autoconfig: BAR %d, I/O, size=0x%llx, ",
+ bar_nr, (unsigned long long)bar_size);
+ } else {
+ if ((bar_response & PCI_BASE_ADDRESS_MEM_TYPE_MASK) ==
+ PCI_BASE_ADDRESS_MEM_TYPE_64) {
+ u32 bar_response_upper;
+ u64 bar64;
+
+#ifndef CONFIG_PCI_ENUM_ONLY
+ pci_hose_write_config_dword(hose, dev, bar + 4,
+ 0xffffffff);
+#endif
+ pci_hose_read_config_dword(hose, dev, bar + 4,
+ &bar_response_upper);
+
+ bar64 = ((u64)bar_response_upper << 32) | bar_response;
+
+ bar_size = ~(bar64 & PCI_BASE_ADDRESS_MEM_MASK) + 1;
+#ifndef CONFIG_PCI_ENUM_ONLY
+ found_mem64 = 1;
+#endif
+ } else {
+ bar_size = (u32)(~(bar_response & PCI_BASE_ADDRESS_MEM_MASK) + 1);
+ }
+#ifndef CONFIG_PCI_ENUM_ONLY
+ if (prefetch && (bar_response & PCI_BASE_ADDRESS_MEM_PREFETCH))
+ bar_res = prefetch;
+ else
+ bar_res = mem;
+#endif
+
+ debug("PCI Autoconfig: BAR %d, %s, size=0x%llx, ",
+ bar_nr, bar_res == prefetch ? "Prf" : "Mem",
+ (unsigned long long)bar_size);
+ }
+
+#ifndef CONFIG_PCI_ENUM_ONLY
+ if (pciauto_region_allocate(bar_res, bar_size, &bar_value) == 0) {
+ /* Write it out and update our limit */
+ pci_hose_write_config_dword(hose, dev, bar, (u32)bar_value);
+
+ if (found_mem64) {
+ bar += 4;
+#ifdef CONFIG_SYS_PCI_64BIT
+ pci_hose_write_config_dword(hose, dev, bar, (u32)(bar_value>>32));
+#else
+ /*
+ * If we are a 64-bit decoder then increment to the
+ * upper 32 bits of the bar and force it to locate
+ * in the lower 4GB of memory.
+ */
+ pci_hose_write_config_dword(hose, dev, bar, 0x00000000);
+#endif
+ }
+
+ }
+#endif
+ cmdstat |= (bar_response & PCI_BASE_ADDRESS_SPACE) ?
+ PCI_COMMAND_IO : PCI_COMMAND_MEMORY;
+
+ debug("\n");
+
+ bar_nr++;
+ }
+
+#ifndef CONFIG_PCI_ENUM_ONLY
+ /* Configure the expansion ROM address */
+ pci_hose_read_config_byte(hose, dev, PCI_HEADER_TYPE, &header_type);
+ header_type &= 0x7f;
+ if (header_type != PCI_HEADER_TYPE_CARDBUS) {
+ rom_addr = (header_type == PCI_HEADER_TYPE_NORMAL) ?
+ PCI_ROM_ADDRESS : PCI_ROM_ADDRESS1;
+ pci_hose_write_config_dword(hose, dev, rom_addr, 0xfffffffe);
+ pci_hose_read_config_dword(hose, dev, rom_addr, &bar_response);
+ if (bar_response) {
+ bar_size = -(bar_response & ~1);
+ debug("PCI Autoconfig: ROM, size=%#x, ",
+ (unsigned int)bar_size);
+ if (pciauto_region_allocate(mem, bar_size,
+ &bar_value) == 0) {
+ pci_hose_write_config_dword(hose, dev, rom_addr,
+ bar_value);
+ }
+ cmdstat |= PCI_COMMAND_MEMORY;
+ debug("\n");
+ }
+ }
+#endif
+
+ /* PCI_COMMAND_IO must be set for VGA device */
+ pci_hose_read_config_word(hose, dev, PCI_CLASS_DEVICE, &class);
+ if (class == PCI_CLASS_DISPLAY_VGA)
+ cmdstat |= PCI_COMMAND_IO;
+
+ pci_hose_write_config_word(hose, dev, PCI_COMMAND, cmdstat);
+ pci_hose_write_config_byte(hose, dev, PCI_CACHE_LINE_SIZE,
+ CONFIG_SYS_PCI_CACHE_LINE_SIZE);
+ pci_hose_write_config_byte(hose, dev, PCI_LATENCY_TIMER, 0x80);
+}
+
+void pciauto_prescan_setup_bridge(struct pci_controller *hose,
+ pci_dev_t dev, int sub_bus)
+{
+ struct pci_region *pci_mem;
+ struct pci_region *pci_prefetch;
+ struct pci_region *pci_io;
+ u16 cmdstat, prefechable_64;
+
+#ifdef CONFIG_DM_PCI
+ /* The root controller has the region information */
+ struct pci_controller *ctlr_hose = pci_bus_to_hose(0);
+
+ pci_mem = ctlr_hose->pci_mem;
+ pci_prefetch = ctlr_hose->pci_prefetch;
+ pci_io = ctlr_hose->pci_io;
+#else
+ pci_mem = hose->pci_mem;
+ pci_prefetch = hose->pci_prefetch;
+ pci_io = hose->pci_io;
+#endif
+
+ pci_hose_read_config_word(hose, dev, PCI_COMMAND, &cmdstat);
+ pci_hose_read_config_word(hose, dev, PCI_PREF_MEMORY_BASE,
+ &prefechable_64);
+ prefechable_64 &= PCI_PREF_RANGE_TYPE_MASK;
+
+ /* Configure bus number registers */
+#ifdef CONFIG_DM_PCI
+ pci_hose_write_config_byte(hose, dev, PCI_PRIMARY_BUS, PCI_BUS(dev));
+ pci_hose_write_config_byte(hose, dev, PCI_SECONDARY_BUS, sub_bus);
+#else
+ pci_hose_write_config_byte(hose, dev, PCI_PRIMARY_BUS,
+ PCI_BUS(dev) - hose->first_busno);
+ pci_hose_write_config_byte(hose, dev, PCI_SECONDARY_BUS,
+ sub_bus - hose->first_busno);
+#endif
+ pci_hose_write_config_byte(hose, dev, PCI_SUBORDINATE_BUS, 0xff);
+
+ if (pci_mem) {
+ /* Round memory allocator to 1MB boundary */
+ pciauto_region_align(pci_mem, 0x100000);
+
+ /* Set up memory and I/O filter limits, assume 32-bit I/O space */
+ pci_hose_write_config_word(hose, dev, PCI_MEMORY_BASE,
+ (pci_mem->bus_lower & 0xfff00000) >> 16);
+
+ cmdstat |= PCI_COMMAND_MEMORY;
+ }
+
+ if (pci_prefetch) {
+ /* Round memory allocator to 1MB boundary */
+ pciauto_region_align(pci_prefetch, 0x100000);
+
+ /* Set up memory and I/O filter limits, assume 32-bit I/O space */
+ pci_hose_write_config_word(hose, dev, PCI_PREF_MEMORY_BASE,
+ (pci_prefetch->bus_lower & 0xfff00000) >> 16);
+ if (prefechable_64 == PCI_PREF_RANGE_TYPE_64)
+#ifdef CONFIG_SYS_PCI_64BIT
+ pci_hose_write_config_dword(hose, dev,
+ PCI_PREF_BASE_UPPER32,
+ pci_prefetch->bus_lower >> 32);
+#else
+ pci_hose_write_config_dword(hose, dev,
+ PCI_PREF_BASE_UPPER32,
+ 0x0);
+#endif
+
+ cmdstat |= PCI_COMMAND_MEMORY;
+ } else {
+ /* We don't support prefetchable memory for now, so disable */
+ pci_hose_write_config_word(hose, dev, PCI_PREF_MEMORY_BASE, 0x1000);
+ pci_hose_write_config_word(hose, dev, PCI_PREF_MEMORY_LIMIT, 0x0);
+ if (prefechable_64 == PCI_PREF_RANGE_TYPE_64) {
+ pci_hose_write_config_word(hose, dev, PCI_PREF_BASE_UPPER32, 0x0);
+ pci_hose_write_config_word(hose, dev, PCI_PREF_LIMIT_UPPER32, 0x0);
+ }
+ }
+
+ if (pci_io) {
+ /* Round I/O allocator to 4KB boundary */
+ pciauto_region_align(pci_io, 0x1000);
+
+ pci_hose_write_config_byte(hose, dev, PCI_IO_BASE,
+ (pci_io->bus_lower & 0x0000f000) >> 8);
+ pci_hose_write_config_word(hose, dev, PCI_IO_BASE_UPPER16,
+ (pci_io->bus_lower & 0xffff0000) >> 16);
+
+ cmdstat |= PCI_COMMAND_IO;
+ }
+
+ /* Enable memory and I/O accesses, enable bus master */
+ pci_hose_write_config_word(hose, dev, PCI_COMMAND,
+ cmdstat | PCI_COMMAND_MASTER);
+}
+
+void pciauto_postscan_setup_bridge(struct pci_controller *hose,
+ pci_dev_t dev, int sub_bus)
+{
+ struct pci_region *pci_mem;
+ struct pci_region *pci_prefetch;
+ struct pci_region *pci_io;
+
+#ifdef CONFIG_DM_PCI
+ /* The root controller has the region information */
+ struct pci_controller *ctlr_hose = pci_bus_to_hose(0);
+
+ pci_mem = ctlr_hose->pci_mem;
+ pci_prefetch = ctlr_hose->pci_prefetch;
+ pci_io = ctlr_hose->pci_io;
+#else
+ pci_mem = hose->pci_mem;
+ pci_prefetch = hose->pci_prefetch;
+ pci_io = hose->pci_io;
+#endif
+
+ /* Configure bus number registers */
+#ifdef CONFIG_DM_PCI
+ pci_hose_write_config_byte(hose, dev, PCI_SUBORDINATE_BUS, sub_bus);
+#else
+ pci_hose_write_config_byte(hose, dev, PCI_SUBORDINATE_BUS,
+ sub_bus - hose->first_busno);
+#endif
+
+ if (pci_mem) {
+ /* Round memory allocator to 1MB boundary */
+ pciauto_region_align(pci_mem, 0x100000);
+
+ pci_hose_write_config_word(hose, dev, PCI_MEMORY_LIMIT,
+ (pci_mem->bus_lower - 1) >> 16);
+ }
+
+ if (pci_prefetch) {
+ u16 prefechable_64;
+
+ pci_hose_read_config_word(hose, dev,
+ PCI_PREF_MEMORY_LIMIT,
+ &prefechable_64);
+ prefechable_64 &= PCI_PREF_RANGE_TYPE_MASK;
+
+ /* Round memory allocator to 1MB boundary */
+ pciauto_region_align(pci_prefetch, 0x100000);
+
+ pci_hose_write_config_word(hose, dev, PCI_PREF_MEMORY_LIMIT,
+ (pci_prefetch->bus_lower - 1) >> 16);
+ if (prefechable_64 == PCI_PREF_RANGE_TYPE_64)
+#ifdef CONFIG_SYS_PCI_64BIT
+ pci_hose_write_config_dword(hose, dev,
+ PCI_PREF_LIMIT_UPPER32,
+ (pci_prefetch->bus_lower - 1) >> 32);
+#else
+ pci_hose_write_config_dword(hose, dev,
+ PCI_PREF_LIMIT_UPPER32,
+ 0x0);
+#endif
+ }
+
+ if (pci_io) {
+ /* Round I/O allocator to 4KB boundary */
+ pciauto_region_align(pci_io, 0x1000);
+
+ pci_hose_write_config_byte(hose, dev, PCI_IO_LIMIT,
+ ((pci_io->bus_lower - 1) & 0x0000f000) >> 8);
+ pci_hose_write_config_word(hose, dev, PCI_IO_LIMIT_UPPER16,
+ ((pci_io->bus_lower - 1) & 0xffff0000) >> 16);
+ }
+}
+
+/*
+ *
+ */
+
+void pciauto_config_init(struct pci_controller *hose)
+{
+ int i;
+
+ hose->pci_io = hose->pci_mem = hose->pci_prefetch = NULL;
+
+ for (i = 0; i < hose->region_count; i++) {
+ switch(hose->regions[i].flags) {
+ case PCI_REGION_IO:
+ if (!hose->pci_io ||
+ hose->pci_io->size < hose->regions[i].size)
+ hose->pci_io = hose->regions + i;
+ break;
+ case PCI_REGION_MEM:
+ if (!hose->pci_mem ||
+ hose->pci_mem->size < hose->regions[i].size)
+ hose->pci_mem = hose->regions + i;
+ break;
+ case (PCI_REGION_MEM | PCI_REGION_PREFETCH):
+ if (!hose->pci_prefetch ||
+ hose->pci_prefetch->size < hose->regions[i].size)
+ hose->pci_prefetch = hose->regions + i;
+ break;
+ }
+ }
+
+
+ if (hose->pci_mem) {
+ pciauto_region_init(hose->pci_mem);
+
+ debug("PCI Autoconfig: Bus Memory region: [0x%llx-0x%llx],\n"
+ "\t\tPhysical Memory [%llx-%llxx]\n",
+ (u64)hose->pci_mem->bus_start,
+ (u64)(hose->pci_mem->bus_start + hose->pci_mem->size - 1),
+ (u64)hose->pci_mem->phys_start,
+ (u64)(hose->pci_mem->phys_start + hose->pci_mem->size - 1));
+ }
+
+ if (hose->pci_prefetch) {
+ pciauto_region_init(hose->pci_prefetch);
+
+ debug("PCI Autoconfig: Bus Prefetchable Mem: [0x%llx-0x%llx],\n"
+ "\t\tPhysical Memory [%llx-%llx]\n",
+ (u64)hose->pci_prefetch->bus_start,
+ (u64)(hose->pci_prefetch->bus_start +
+ hose->pci_prefetch->size - 1),
+ (u64)hose->pci_prefetch->phys_start,
+ (u64)(hose->pci_prefetch->phys_start +
+ hose->pci_prefetch->size - 1));
+ }
+
+ if (hose->pci_io) {
+ pciauto_region_init(hose->pci_io);
+
+ debug("PCI Autoconfig: Bus I/O region: [0x%llx-0x%llx],\n"
+ "\t\tPhysical Memory: [%llx-%llx]\n",
+ (u64)hose->pci_io->bus_start,
+ (u64)(hose->pci_io->bus_start + hose->pci_io->size - 1),
+ (u64)hose->pci_io->phys_start,
+ (u64)(hose->pci_io->phys_start + hose->pci_io->size - 1));
+
+ }
+}
+
+/*
+ * HJF: Changed this to return int. I think this is required
+ * to get the correct result when scanning bridges
+ */
+int pciauto_config_device(struct pci_controller *hose, pci_dev_t dev)
+{
+ struct pci_region *pci_mem;
+ struct pci_region *pci_prefetch;
+ struct pci_region *pci_io;
+ unsigned int sub_bus = PCI_BUS(dev);
+ unsigned short class;
+ int n;
+
+#ifdef CONFIG_DM_PCI
+ /* The root controller has the region information */
+ struct pci_controller *ctlr_hose = pci_bus_to_hose(0);
+
+ pci_mem = ctlr_hose->pci_mem;
+ pci_prefetch = ctlr_hose->pci_prefetch;
+ pci_io = ctlr_hose->pci_io;
+#else
+ pci_mem = hose->pci_mem;
+ pci_prefetch = hose->pci_prefetch;
+ pci_io = hose->pci_io;
+#endif
+
+ pci_hose_read_config_word(hose, dev, PCI_CLASS_DEVICE, &class);
+
+ switch (class) {
+ case PCI_CLASS_BRIDGE_PCI:
+ debug("PCI Autoconfig: Found P2P bridge, device %d\n",
+ PCI_DEV(dev));
+
+ pciauto_setup_device(hose, dev, 2, pci_mem,
+ pci_prefetch, pci_io);
+
+#ifdef CONFIG_DM_PCI
+ n = dm_pci_hose_probe_bus(hose, dev);
+ if (n < 0)
+ return n;
+ sub_bus = (unsigned int)n;
+#else
+ /* Passing in current_busno allows for sibling P2P bridges */
+ hose->current_busno++;
+ pciauto_prescan_setup_bridge(hose, dev, hose->current_busno);
+ /*
+ * need to figure out if this is a subordinate bridge on the bus
+ * to be able to properly set the pri/sec/sub bridge registers.
+ */
+ n = pci_hose_scan_bus(hose, hose->current_busno);
+
+ /* figure out the deepest we've gone for this leg */
+ sub_bus = max((unsigned int)n, sub_bus);
+ pciauto_postscan_setup_bridge(hose, dev, sub_bus);
+
+ sub_bus = hose->current_busno;
+#endif
+ break;
+
+ case PCI_CLASS_BRIDGE_CARDBUS:
+ /*
+ * just do a minimal setup of the bridge,
+ * let the OS take care of the rest
+ */
+ pciauto_setup_device(hose, dev, 0, pci_mem,
+ pci_prefetch, pci_io);
+
+ debug("PCI Autoconfig: Found P2CardBus bridge, device %d\n",
+ PCI_DEV(dev));
+
+#ifndef CONFIG_DM_PCI
+ hose->current_busno++;
+#endif
+ break;
+
+#if defined(CONFIG_PCIAUTO_SKIP_HOST_BRIDGE)
+ case PCI_CLASS_BRIDGE_OTHER:
+ debug("PCI Autoconfig: Skipping bridge device %d\n",
+ PCI_DEV(dev));
+ break;
+#endif
+#if defined(CONFIG_MPC834x) && !defined(CONFIG_VME8349)
+ case PCI_CLASS_BRIDGE_OTHER:
+ /*
+ * The host/PCI bridge 1 seems broken in 8349 - it presents
+ * itself as 'PCI_CLASS_BRIDGE_OTHER' and appears as an _agent_
+ * device claiming resources io/mem/irq.. we only allow for
+ * the PIMMR window to be allocated (BAR0 - 1MB size)
+ */
+ debug("PCI Autoconfig: Broken bridge found, only minimal config\n");
+ pciauto_setup_device(hose, dev, 0, hose->pci_mem,
+ hose->pci_prefetch, hose->pci_io);
+ break;
+#endif
+
+ case PCI_CLASS_PROCESSOR_POWERPC: /* an agent or end-point */
+ debug("PCI AutoConfig: Found PowerPC device\n");
+
+ default:
+ pciauto_setup_device(hose, dev, 6, pci_mem,
+ pci_prefetch, pci_io);
+ break;
+ }
+
+ return sub_bus;
+}
projects / oweals / u-boot.git / commitdiff