/*
- * Common pmac/prep/chrp pci routines. -- Cort
+ * Common prep/chrp pci routines. -- Cort
*/
#include <linux/config.h>
#include <asm/byteorder.h>
#include <asm/irq.h>
#include <asm/uaccess.h>
+#include <asm/machdep.h>
#undef DEBUG
static void pcibios_fixup_resources(struct pci_dev* dev);
static void fixup_broken_pcnet32(struct pci_dev* dev);
static int reparent_resources(struct resource *parent, struct resource *res);
-static void fixup_rev1_53c810(struct pci_dev* dev);
static void fixup_cpc710_pci64(struct pci_dev* dev);
-#ifdef CONFIG_PPC_OF
-static u8* pci_to_OF_bus_map;
-#endif
-/* By default, we don't re-assign bus numbers. We do this only on
- * some pmacs
+/* By default, we don't re-assign bus numbers.
*/
-int pci_assign_all_busses;
+int pci_assign_all_buses;
struct pci_controller* hose_head;
struct pci_controller** hose_tail = &hose_head;
static int pci_bus_count;
-static void
-fixup_rev1_53c810(struct pci_dev* dev)
-{
- /* rev 1 ncr53c810 chips don't set the class at all which means
- * they don't get their resources remapped. Fix that here.
- */
-
- if ((dev->class == PCI_CLASS_NOT_DEFINED)) {
- printk("NCR 53c810 rev 1 detected, setting PCI class.\n");
- dev->class = PCI_CLASS_STORAGE_SCSI;
- }
-}
-DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NCR, PCI_DEVICE_ID_NCR_53C810, fixup_rev1_53c810);
-
static void
fixup_broken_pcnet32(struct pci_dev* dev)
{
if ((dev->class>>8 == PCI_CLASS_NETWORK_ETHERNET)) {
dev->vendor = PCI_VENDOR_ID_AMD;
pci_write_config_word(dev, PCI_VENDOR_ID, PCI_VENDOR_ID_AMD);
- pci_name_device(dev);
}
}
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_TRIDENT, PCI_ANY_ID, fixup_broken_pcnet32);
}
EXPORT_SYMBOL(pcibios_resource_to_bus);
+void pcibios_bus_to_resource(struct pci_dev *dev, struct resource *res,
+ struct pci_bus_region *region)
+{
+ unsigned long offset = 0;
+ struct pci_controller *hose = dev->sysdata;
+
+ if (hose && res->flags & IORESOURCE_IO)
+ offset = (unsigned long)hose->io_base_virt - isa_io_base;
+ else if (hose && res->flags & IORESOURCE_MEM)
+ offset = hose->pci_mem_offset;
+ res->start = region->start + offset;
+ res->end = region->end + offset;
+}
+EXPORT_SYMBOL(pcibios_bus_to_resource);
+
/*
* We need to avoid collisions with `mirrored' VGA ports
* and other strange ISA hardware, so we always want the
u16 command;
struct resource *r;
- while ((dev = pci_find_device(PCI_ANY_ID, PCI_ANY_ID, dev)) != NULL) {
+ for_each_pci_dev(dev) {
pci_read_config_word(dev, PCI_COMMAND, &command);
for (idx = 0; idx < 6; idx++) {
r = &dev->resource[idx];
int idx;
struct resource *r;
- while ((dev = pci_find_device(PCI_ANY_ID, PCI_ANY_ID, dev)) != NULL) {
+ for_each_pci_dev(dev) {
int class = dev->class >> 8;
/* Don't touch classless devices and host bridges */
return hose;
}
-#ifdef CONFIG_PPC_OF
-/*
- * Functions below are used on OpenFirmware machines.
- */
-static void __openfirmware
-make_one_node_map(struct device_node* node, u8 pci_bus)
+void pcibios_make_OF_bus_map(void)
{
- int *bus_range;
- int len;
-
- if (pci_bus >= pci_bus_count)
- return;
- bus_range = (int *) get_property(node, "bus-range", &len);
- if (bus_range == NULL || len < 2 * sizeof(int)) {
- printk(KERN_WARNING "Can't get bus-range for %s, "
- "assuming it starts at 0\n", node->full_name);
- pci_to_OF_bus_map[pci_bus] = 0;
- } else
- pci_to_OF_bus_map[pci_bus] = bus_range[0];
-
- for (node=node->child; node != 0;node = node->sibling) {
- struct pci_dev* dev;
- unsigned int *class_code, *reg;
-
- class_code = (unsigned int *) get_property(node, "class-code", NULL);
- if (!class_code || ((*class_code >> 8) != PCI_CLASS_BRIDGE_PCI &&
- (*class_code >> 8) != PCI_CLASS_BRIDGE_CARDBUS))
- continue;
- reg = (unsigned int *)get_property(node, "reg", NULL);
- if (!reg)
- continue;
- dev = pci_find_slot(pci_bus, ((reg[0] >> 8) & 0xff));
- if (!dev || !dev->subordinate)
- continue;
- make_one_node_map(node, dev->subordinate->number);
- }
}
-
-void __openfirmware
-pcibios_make_OF_bus_map(void)
-{
- int i;
- struct pci_controller* hose;
- u8* of_prop_map;
-
- pci_to_OF_bus_map = (u8*)kmalloc(pci_bus_count, GFP_KERNEL);
- if (!pci_to_OF_bus_map) {
- printk(KERN_ERR "Can't allocate OF bus map !\n");
- return;
- }
-
- /* We fill the bus map with invalid values, that helps
- * debugging.
- */
- for (i=0; i<pci_bus_count; i++)
- pci_to_OF_bus_map[i] = 0xff;
-
- /* For each hose, we begin searching bridges */
- for(hose=hose_head; hose; hose=hose->next) {
- struct device_node* node;
- node = (struct device_node *)hose->arch_data;
- if (!node)
- continue;
- make_one_node_map(node, hose->first_busno);
- }
- of_prop_map = get_property(find_path_device("/"), "pci-OF-bus-map", NULL);
- if (of_prop_map)
- memcpy(of_prop_map, pci_to_OF_bus_map, pci_bus_count);
-#ifdef DEBUG
- printk("PCI->OF bus map:\n");
- for (i=0; i<pci_bus_count; i++) {
- if (pci_to_OF_bus_map[i] == 0xff)
- continue;
- printk("%d -> %d\n", i, pci_to_OF_bus_map[i]);
- }
-#endif
-}
-
-typedef int (*pci_OF_scan_iterator)(struct device_node* node, void* data);
-
-static struct device_node* __openfirmware
-scan_OF_pci_childs(struct device_node* node, pci_OF_scan_iterator filter, void* data)
-{
- struct device_node* sub_node;
-
- for (; node != 0;node = node->sibling) {
- unsigned int *class_code;
-
- if (filter(node, data))
- return node;
-
- /* For PCI<->PCI bridges or CardBus bridges, we go down
- * Note: some OFs create a parent node "multifunc-device" as
- * a fake root for all functions of a multi-function device,
- * we go down them as well.
- */
- class_code = (unsigned int *) get_property(node, "class-code", NULL);
- if ((!class_code || ((*class_code >> 8) != PCI_CLASS_BRIDGE_PCI &&
- (*class_code >> 8) != PCI_CLASS_BRIDGE_CARDBUS)) &&
- strcmp(node->name, "multifunc-device"))
- continue;
- sub_node = scan_OF_pci_childs(node->child, filter, data);
- if (sub_node)
- return sub_node;
- }
- return NULL;
-}
-
-static int
-scan_OF_pci_childs_iterator(struct device_node* node, void* data)
-{
- unsigned int *reg;
- u8* fdata = (u8*)data;
-
- reg = (unsigned int *) get_property(node, "reg", NULL);
- if (reg && ((reg[0] >> 8) & 0xff) == fdata[1]
- && ((reg[0] >> 16) & 0xff) == fdata[0])
- return 1;
- return 0;
-}
-
-static struct device_node* __openfirmware
-scan_OF_childs_for_device(struct device_node* node, u8 bus, u8 dev_fn)
-{
- u8 filter_data[2] = {bus, dev_fn};
-
- return scan_OF_pci_childs(node, scan_OF_pci_childs_iterator, filter_data);
-}
-
-/*
- * Scans the OF tree for a device node matching a PCI device
- */
-struct device_node *
-pci_busdev_to_OF_node(struct pci_bus *bus, int devfn)
-{
- struct pci_controller *hose;
- struct device_node *node;
- int busnr;
-
- if (!have_of)
- return NULL;
-
- /* Lookup the hose */
- busnr = bus->number;
- hose = pci_bus_to_hose(busnr);
- if (!hose)
- return NULL;
-
- /* Check it has an OF node associated */
- node = (struct device_node *) hose->arch_data;
- if (!node)
- return NULL;
-
- /* Fixup bus number according to what OF think it is. */
-#ifdef CONFIG_PPC_PMAC
- /* The G5 need a special case here. Basically, we don't remap all
- * busses on it so we don't create the pci-OF-map. However, we do
- * remap the AGP bus and so have to deal with it. A future better
- * fix has to be done by making the remapping per-host and always
- * filling the pci_to_OF map. --BenH
- */
- if (_machine == _MACH_Pmac && busnr >= 0xf0)
- busnr -= 0xf0;
- else
-#endif
- if (pci_to_OF_bus_map)
- busnr = pci_to_OF_bus_map[busnr];
- if (busnr == 0xff)
- return NULL;
-
- /* Now, lookup childs of the hose */
- return scan_OF_childs_for_device(node->child, busnr, devfn);
-}
-
-struct device_node*
-pci_device_to_OF_node(struct pci_dev *dev)
-{
- return pci_busdev_to_OF_node(dev->bus, dev->devfn);
-}
-
-/* This routine is meant to be used early during boot, when the
- * PCI bus numbers have not yet been assigned, and you need to
- * issue PCI config cycles to an OF device.
- * It could also be used to "fix" RTAS config cycles if you want
- * to set pci_assign_all_busses to 1 and still use RTAS for PCI
- * config cycles.
- */
-struct pci_controller*
-pci_find_hose_for_OF_device(struct device_node* node)
-{
- if (!have_of)
- return NULL;
- while(node) {
- struct pci_controller* hose;
- for (hose=hose_head;hose;hose=hose->next)
- if (hose->arch_data == node)
- return hose;
- node=node->parent;
- }
- return NULL;
-}
-
-static int __openfirmware
-find_OF_pci_device_filter(struct device_node* node, void* data)
-{
- return ((void *)node == data);
-}
-
-/*
- * Returns the PCI device matching a given OF node
- */
-int
-pci_device_from_OF_node(struct device_node* node, u8* bus, u8* devfn)
-{
- unsigned int *reg;
- struct pci_controller* hose;
- struct pci_dev* dev = NULL;
-
- if (!have_of)
- return -ENODEV;
- /* Make sure it's really a PCI device */
- hose = pci_find_hose_for_OF_device(node);
- if (!hose || !hose->arch_data)
- return -ENODEV;
- if (!scan_OF_pci_childs(((struct device_node*)hose->arch_data)->child,
- find_OF_pci_device_filter, (void *)node))
- return -ENODEV;
- reg = (unsigned int *) get_property(node, "reg", NULL);
- if (!reg)
- return -ENODEV;
- *bus = (reg[0] >> 16) & 0xff;
- *devfn = ((reg[0] >> 8) & 0xff);
-
- /* Ok, here we need some tweak. If we have already renumbered
- * all busses, we can't rely on the OF bus number any more.
- * the pci_to_OF_bus_map is not enough as several PCI busses
- * may match the same OF bus number.
- */
- if (!pci_to_OF_bus_map)
- return 0;
- while ((dev = pci_find_device(PCI_ANY_ID, PCI_ANY_ID, dev)) != NULL) {
- if (pci_to_OF_bus_map[dev->bus->number] != *bus)
- continue;
- if (dev->devfn != *devfn)
- continue;
- *bus = dev->bus->number;
- return 0;
- }
- return -ENODEV;
-}
-
-void __init
-pci_process_bridge_OF_ranges(struct pci_controller *hose,
- struct device_node *dev, int primary)
-{
- static unsigned int static_lc_ranges[256] __initdata;
- unsigned int *dt_ranges, *lc_ranges, *ranges, *prev;
- unsigned int size;
- int rlen = 0, orig_rlen;
- int memno = 0;
- struct resource *res;
- int np, na = prom_n_addr_cells(dev);
- np = na + 5;
-
- /* First we try to merge ranges to fix a problem with some pmacs
- * that can have more than 3 ranges, fortunately using contiguous
- * addresses -- BenH
- */
- dt_ranges = (unsigned int *) get_property(dev, "ranges", &rlen);
- if (!dt_ranges)
- return;
- /* Sanity check, though hopefully that never happens */
- if (rlen > sizeof(static_lc_ranges)) {
- printk(KERN_WARNING "OF ranges property too large !\n");
- rlen = sizeof(static_lc_ranges);
- }
- lc_ranges = static_lc_ranges;
- memcpy(lc_ranges, dt_ranges, rlen);
- orig_rlen = rlen;
-
- /* Let's work on a copy of the "ranges" property instead of damaging
- * the device-tree image in memory
- */
- ranges = lc_ranges;
- prev = NULL;
- while ((rlen -= np * sizeof(unsigned int)) >= 0) {
- if (prev) {
- if (prev[0] == ranges[0] && prev[1] == ranges[1] &&
- (prev[2] + prev[na+4]) == ranges[2] &&
- (prev[na+2] + prev[na+4]) == ranges[na+2]) {
- prev[na+4] += ranges[na+4];
- ranges[0] = 0;
- ranges += np;
- continue;
- }
- }
- prev = ranges;
- ranges += np;
- }
-
- /*
- * The ranges property is laid out as an array of elements,
- * each of which comprises:
- * cells 0 - 2: a PCI address
- * cells 3 or 3+4: a CPU physical address
- * (size depending on dev->n_addr_cells)
- * cells 4+5 or 5+6: the size of the range
- */
- ranges = lc_ranges;
- rlen = orig_rlen;
- while (ranges && (rlen -= np * sizeof(unsigned int)) >= 0) {
- res = NULL;
- size = ranges[na+4];
- switch (ranges[0] >> 24) {
- case 1: /* I/O space */
- if (ranges[2] != 0)
- break;
- hose->io_base_phys = ranges[na+2];
- /* limit I/O space to 16MB */
- if (size > 0x01000000)
- size = 0x01000000;
- hose->io_base_virt = ioremap(ranges[na+2], size);
- if (primary)
- isa_io_base = (unsigned long) hose->io_base_virt;
- res = &hose->io_resource;
- res->flags = IORESOURCE_IO;
- res->start = ranges[2];
- break;
- case 2: /* memory space */
- memno = 0;
- if (ranges[1] == 0 && ranges[2] == 0
- && ranges[na+4] <= (16 << 20)) {
- /* 1st 16MB, i.e. ISA memory area */
- if (primary)
- isa_mem_base = ranges[na+2];
- memno = 1;
- }
- while (memno < 3 && hose->mem_resources[memno].flags)
- ++memno;
- if (memno == 0)
- hose->pci_mem_offset = ranges[na+2] - ranges[2];
- if (memno < 3) {
- res = &hose->mem_resources[memno];
- res->flags = IORESOURCE_MEM;
- res->start = ranges[na+2];
- }
- break;
- }
- if (res != NULL) {
- res->name = dev->full_name;
- res->end = res->start + size - 1;
- res->parent = NULL;
- res->sibling = NULL;
- res->child = NULL;
- }
- ranges += np;
- }
-}
-
-/* We create the "pci-OF-bus-map" property now so it appears in the
- * /proc device tree
- */
-void __init
-pci_create_OF_bus_map(void)
-{
- struct property* of_prop;
-
- of_prop = (struct property*) alloc_bootmem(sizeof(struct property) + 256);
- if (of_prop && find_path_device("/")) {
- memset(of_prop, -1, sizeof(struct property) + 256);
- of_prop->name = "pci-OF-bus-map";
- of_prop->length = 256;
- of_prop->value = (unsigned char *)&of_prop[1];
- prom_add_property(find_path_device("/"), of_prop);
- }
-}
-
-static ssize_t pci_show_devspec(struct device *dev, char *buf)
-{
- struct pci_dev *pdev;
- struct device_node *np;
-
- pdev = to_pci_dev (dev);
- np = pci_device_to_OF_node(pdev);
- if (np == NULL || np->full_name == NULL)
- return 0;
- return sprintf(buf, "%s", np->full_name);
-}
-static DEVICE_ATTR(devspec, S_IRUGO, pci_show_devspec, NULL);
-
-#endif /* CONFIG_PPC_OF */
/* Add sysfs properties */
void pcibios_add_platform_entries(struct pci_dev *pdev)
{
-#ifdef CONFIG_PPC_OF
- device_create_file(&pdev->dev, &dev_attr_devspec);
-#endif /* CONFIG_PPC_OF */
-}
-
-
-#ifdef CONFIG_PPC_PMAC
-/*
- * This set of routines checks for PCI<->PCI bridges that have closed
- * IO resources and have child devices. It tries to re-open an IO
- * window on them.
- *
- * This is a _temporary_ fix to workaround a problem with Apple's OF
- * closing IO windows on P2P bridges when the OF drivers of cards
- * below this bridge don't claim any IO range (typically ATI or
- * Adaptec).
- *
- * A more complete fix would be to use drivers/pci/setup-bus.c, which
- * involves a working pcibios_fixup_pbus_ranges(), some more care about
- * ordering when creating the host bus resources, and maybe a few more
- * minor tweaks
- */
-
-/* Initialize bridges with base/limit values we have collected */
-static void __init
-do_update_p2p_io_resource(struct pci_bus *bus, int enable_vga)
-{
- struct pci_dev *bridge = bus->self;
- struct pci_controller* hose = (struct pci_controller *)bridge->sysdata;
- u32 l;
- u16 w;
- struct resource res;
-
- if (bus->resource[0] == NULL)
- return;
- res = *(bus->resource[0]);
-
- DBG("Remapping Bus %d, bridge: %s\n", bus->number, pci_name(bridge));
- res.start -= ((unsigned long) hose->io_base_virt - isa_io_base);
- res.end -= ((unsigned long) hose->io_base_virt - isa_io_base);
- DBG(" IO window: %08lx-%08lx\n", res.start, res.end);
-
- /* Set up the top and bottom of the PCI I/O segment for this bus. */
- pci_read_config_dword(bridge, PCI_IO_BASE, &l);
- l &= 0xffff000f;
- l |= (res.start >> 8) & 0x00f0;
- l |= res.end & 0xf000;
- pci_write_config_dword(bridge, PCI_IO_BASE, l);
-
- if ((l & PCI_IO_RANGE_TYPE_MASK) == PCI_IO_RANGE_TYPE_32) {
- l = (res.start >> 16) | (res.end & 0xffff0000);
- pci_write_config_dword(bridge, PCI_IO_BASE_UPPER16, l);
- }
-
- pci_read_config_word(bridge, PCI_COMMAND, &w);
- w |= PCI_COMMAND_IO;
- pci_write_config_word(bridge, PCI_COMMAND, w);
-
-#if 0 /* Enabling this causes XFree 4.2.0 to hang during PCI probe */
- if (enable_vga) {
- pci_read_config_word(bridge, PCI_BRIDGE_CONTROL, &w);
- w |= PCI_BRIDGE_CTL_VGA;
- pci_write_config_word(bridge, PCI_BRIDGE_CONTROL, w);
- }
-#endif
-}
-
-/* This function is pretty basic and actually quite broken for the
- * general case, it's enough for us right now though. It's supposed
- * to tell us if we need to open an IO range at all or not and what
- * size.
- */
-static int __init
-check_for_io_childs(struct pci_bus *bus, struct resource* res, int *found_vga)
-{
- struct pci_dev *dev;
- int i;
- int rc = 0;
-
-#define push_end(res, size) do { unsigned long __sz = (size) ; \
- res->end = ((res->end + __sz) / (__sz + 1)) * (__sz + 1) + __sz; \
- } while (0)
-
- list_for_each_entry(dev, &bus->devices, bus_list) {
- u16 class = dev->class >> 8;
-
- if (class == PCI_CLASS_DISPLAY_VGA ||
- class == PCI_CLASS_NOT_DEFINED_VGA)
- *found_vga = 1;
- if (class >> 8 == PCI_BASE_CLASS_BRIDGE && dev->subordinate)
- rc |= check_for_io_childs(dev->subordinate, res, found_vga);
- if (class == PCI_CLASS_BRIDGE_CARDBUS)
- push_end(res, 0xfff);
-
- for (i=0; i<PCI_NUM_RESOURCES; i++) {
- struct resource *r;
- unsigned long r_size;
-
- if (dev->class >> 8 == PCI_CLASS_BRIDGE_PCI
- && i >= PCI_BRIDGE_RESOURCES)
- continue;
- r = &dev->resource[i];
- r_size = r->end - r->start;
- if (r_size < 0xfff)
- r_size = 0xfff;
- if (r->flags & IORESOURCE_IO && (r_size) != 0) {
- rc = 1;
- push_end(res, r_size);
- }
- }
- }
-
- return rc;
-}
-
-/* Here we scan all P2P bridges of a given level that have a closed
- * IO window. Note that the test for the presence of a VGA card should
- * be improved to take into account already configured P2P bridges,
- * currently, we don't see them and might end up configuring 2 bridges
- * with VGA pass through enabled
- */
-static void __init
-do_fixup_p2p_level(struct pci_bus *bus)
-{
- struct pci_bus *b;
- int i, parent_io;
- int has_vga = 0;
-
- for (parent_io=0; parent_io<4; parent_io++)
- if (bus->resource[parent_io]
- && bus->resource[parent_io]->flags & IORESOURCE_IO)
- break;
- if (parent_io >= 4)
- return;
-
- list_for_each_entry(b, &bus->children, node) {
- struct pci_dev *d = b->self;
- struct pci_controller* hose = (struct pci_controller *)d->sysdata;
- struct resource *res = b->resource[0];
- struct resource tmp_res;
- unsigned long max;
- int found_vga = 0;
-
- memset(&tmp_res, 0, sizeof(tmp_res));
- tmp_res.start = bus->resource[parent_io]->start;
-
- /* We don't let low addresses go through that closed P2P bridge, well,
- * that may not be necessary but I feel safer that way
- */
- if (tmp_res.start == 0)
- tmp_res.start = 0x1000;
-
- if (!list_empty(&b->devices) && res && res->flags == 0 &&
- res != bus->resource[parent_io] &&
- (d->class >> 8) == PCI_CLASS_BRIDGE_PCI &&
- check_for_io_childs(b, &tmp_res, &found_vga)) {
- u8 io_base_lo;
-
- printk(KERN_INFO "Fixing up IO bus %s\n", b->name);
-
- if (found_vga) {
- if (has_vga) {
- printk(KERN_WARNING "Skipping VGA, already active"
- " on bus segment\n");
- found_vga = 0;
- } else
- has_vga = 1;
- }
- pci_read_config_byte(d, PCI_IO_BASE, &io_base_lo);
-
- if ((io_base_lo & PCI_IO_RANGE_TYPE_MASK) == PCI_IO_RANGE_TYPE_32)
- max = ((unsigned long) hose->io_base_virt
- - isa_io_base) + 0xffffffff;
- else
- max = ((unsigned long) hose->io_base_virt
- - isa_io_base) + 0xffff;
-
- *res = tmp_res;
- res->flags = IORESOURCE_IO;
- res->name = b->name;
-
- /* Find a resource in the parent where we can allocate */
- for (i = 0 ; i < 4; i++) {
- struct resource *r = bus->resource[i];
- if (!r)
- continue;
- if ((r->flags & IORESOURCE_IO) == 0)
- continue;
- DBG("Trying to allocate from %08lx, size %08lx from parent"
- " res %d: %08lx -> %08lx\n",
- res->start, res->end, i, r->start, r->end);
-
- if (allocate_resource(r, res, res->end + 1, res->start, max,
- res->end + 1, NULL, NULL) < 0) {
- DBG("Failed !\n");
- continue;
- }
- do_update_p2p_io_resource(b, found_vga);
- break;
- }
- }
- do_fixup_p2p_level(b);
- }
-}
-
-static void
-pcibios_fixup_p2p_bridges(void)
-{
- struct pci_bus *b;
-
- list_for_each_entry(b, &pci_root_buses, node)
- do_fixup_p2p_level(b);
}
-#endif /* CONFIG_PPC_PMAC */
static int __init
pcibios_init(void)
/* Scan all of the recorded PCI controllers. */
for (next_busno = 0, hose = hose_head; hose; hose = hose->next) {
- if (pci_assign_all_busses)
+ if (pci_assign_all_buses)
hose->first_busno = next_busno;
hose->last_busno = 0xff;
bus = pci_scan_bus(hose->first_busno, hose->ops, hose);
hose->last_busno = bus->subordinate;
- if (pci_assign_all_busses || next_busno <= hose->last_busno)
+ if (pci_assign_all_buses || next_busno <= hose->last_busno)
next_busno = hose->last_busno + pcibios_assign_bus_offset;
}
pci_bus_count = next_busno;
* numbers vs. kernel bus numbers since we may have to
* remap them.
*/
- if (pci_assign_all_busses && have_of)
+ if (pci_assign_all_buses && have_of)
pcibios_make_OF_bus_map();
/* Do machine dependent PCI interrupt routing */
pcibios_allocate_bus_resources(&pci_root_buses);
pcibios_allocate_resources(0);
pcibios_allocate_resources(1);
-#ifdef CONFIG_PPC_PMAC
- pcibios_fixup_p2p_bridges();
-#endif /* CONFIG_PPC_PMAC */
pcibios_assign_resources();
/* Call machine dependent post-init code */
*offset += hose->pci_mem_offset;
res_bit = IORESOURCE_MEM;
} else {
- io_offset = (unsigned long)hose->io_base_virt;
+ io_offset = hose->io_base_virt - ___IO_BASE;
*offset += io_offset;
res_bit = IORESOURCE_IO;
}
/* found it! construct the final physical address */
if (mmap_state == pci_mmap_io)
- *offset += hose->io_base_phys - _IO_BASE;
+ *offset += hose->io_base_phys - io_offset;
return rp;
}
* above routine
*/
pgprot_t pci_phys_mem_access_prot(struct file *file,
- unsigned long offset,
+ unsigned long pfn,
unsigned long size,
pgprot_t protection)
{
struct pci_dev *pdev = NULL;
struct resource *found = NULL;
unsigned long prot = pgprot_val(protection);
+ unsigned long offset = pfn << PAGE_SHIFT;
int i;
- if (page_is_ram(offset >> PAGE_SHIFT))
+ if (page_is_ram(pfn))
return prot;
prot |= _PAGE_NO_CACHE | _PAGE_GUARDED;
struct pci_controller* hose;
long result = -EOPNOTSUPP;
- /* Argh ! Please forgive me for that hack, but that's the
- * simplest way to get existing XFree to not lockup on some
- * G5 machines... So when something asks for bus 0 io base
- * (bus 0 is HT root), we return the AGP one instead.
- */
-#ifdef CONFIG_PPC_PMAC
- if (_machine == _MACH_Pmac && machine_is_compatible("MacRISC4"))
- if (bus == 0)
- bus = 0xf0;
-#endif /* CONFIG_PPC_PMAC */
-
hose = pci_bus_to_hose(bus);
if (!hose)
return -ENODEV;
return result;
}
+void pci_resource_to_user(const struct pci_dev *dev, int bar,
+ const struct resource *rsrc,
+ u64 *start, u64 *end)
+{
+ struct pci_controller *hose = pci_bus_to_hose(dev->bus->number);
+ unsigned long offset = 0;
+
+ if (hose == NULL)
+ return;
+
+ if (rsrc->flags & IORESOURCE_IO)
+ offset = ___IO_BASE - hose->io_base_virt + hose->io_base_phys;
+
+ *start = rsrc->start + offset;
+ *end = rsrc->end + offset;
+}
+
void __init
pci_init_resource(struct resource *res, unsigned long start, unsigned long end,
int flags, char *name)
EXPORT_SYMBOL(pci_iomap);
EXPORT_SYMBOL(pci_iounmap);
+unsigned long pci_address_to_pio(phys_addr_t address)
+{
+ struct pci_controller* hose = hose_head;
+
+ for (; hose; hose = hose->next) {
+ unsigned int size = hose->io_resource.end -
+ hose->io_resource.start + 1;
+ if (address >= hose->io_base_phys &&
+ address < (hose->io_base_phys + size)) {
+ unsigned long base =
+ (unsigned long)hose->io_base_virt - _IO_BASE;
+ return base + (address - hose->io_base_phys);
+ }
+ }
+ return (unsigned int)-1;
+}
+EXPORT_SYMBOL(pci_address_to_pio);
/*
* Null PCI config access functions, for the case when we can't
git://git.onelab.eu / linux-2.6.git / blobdiff