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path: root/arch/x86/pci/k8-bus_64.c
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Diffstat (limited to 'arch/x86/pci/k8-bus_64.c')
-rw-r--r--arch/x86/pci/k8-bus_64.c528
1 files changed, 0 insertions, 528 deletions
diff --git a/arch/x86/pci/k8-bus_64.c b/arch/x86/pci/k8-bus_64.c
deleted file mode 100644
index 5c2799c20e47..000000000000
--- a/arch/x86/pci/k8-bus_64.c
+++ /dev/null
@@ -1,528 +0,0 @@
-#include <linux/init.h>
-#include <linux/pci.h>
-#include <asm/pci-direct.h>
-#include <asm/mpspec.h>
-#include <linux/cpumask.h>
-#include <linux/topology.h>
-
-/*
- * This discovers the pcibus <-> node mapping on AMD K8.
- * also get peer root bus resource for io,mmio
- */
-
-
-/*
- * sub bus (transparent) will use entres from 3 to store extra from root,
- * so need to make sure have enought slot there, increase PCI_BUS_NUM_RESOURCES?
- */
-#define RES_NUM 16
-struct pci_root_info {
- char name[12];
- unsigned int res_num;
- struct resource res[RES_NUM];
- int bus_min;
- int bus_max;
- int node;
- int link;
-};
-
-/* 4 at this time, it may become to 32 */
-#define PCI_ROOT_NR 4
-static int pci_root_num;
-static struct pci_root_info pci_root_info[PCI_ROOT_NR];
-
-#ifdef CONFIG_NUMA
-
-#define BUS_NR 256
-
-static int mp_bus_to_node[BUS_NR];
-
-void set_mp_bus_to_node(int busnum, int node)
-{
- if (busnum >= 0 && busnum < BUS_NR)
- mp_bus_to_node[busnum] = node;
-}
-
-int get_mp_bus_to_node(int busnum)
-{
- int node = -1;
-
- if (busnum < 0 || busnum > (BUS_NR - 1))
- return node;
-
- node = mp_bus_to_node[busnum];
-
- /*
- * let numa_node_id to decide it later in dma_alloc_pages
- * if there is no ram on that node
- */
- if (node != -1 && !node_online(node))
- node = -1;
-
- return node;
-}
-#endif
-
-void set_pci_bus_resources_arch_default(struct pci_bus *b)
-{
- int i;
- int j;
- struct pci_root_info *info;
-
- /* if only one root bus, don't need to anything */
- if (pci_root_num < 2)
- return;
-
- for (i = 0; i < pci_root_num; i++) {
- if (pci_root_info[i].bus_min == b->number)
- break;
- }
-
- if (i == pci_root_num)
- return;
-
- info = &pci_root_info[i];
- for (j = 0; j < info->res_num; j++) {
- struct resource *res;
- struct resource *root;
-
- res = &info->res[j];
- b->resource[j] = res;
- if (res->flags & IORESOURCE_IO)
- root = &ioport_resource;
- else
- root = &iomem_resource;
- insert_resource(root, res);
- }
-}
-
-#define RANGE_NUM 16
-
-struct res_range {
- size_t start;
- size_t end;
-};
-
-static void __init update_range(struct res_range *range, size_t start,
- size_t end)
-{
- int i;
- int j;
-
- for (j = 0; j < RANGE_NUM; j++) {
- if (!range[j].end)
- continue;
-
- if (start <= range[j].start && end >= range[j].end) {
- range[j].start = 0;
- range[j].end = 0;
- continue;
- }
-
- if (start <= range[j].start && end < range[j].end && range[j].start < end + 1) {
- range[j].start = end + 1;
- continue;
- }
-
-
- if (start > range[j].start && end >= range[j].end && range[j].end > start - 1) {
- range[j].end = start - 1;
- continue;
- }
-
- if (start > range[j].start && end < range[j].end) {
- /* find the new spare */
- for (i = 0; i < RANGE_NUM; i++) {
- if (range[i].end == 0)
- break;
- }
- if (i < RANGE_NUM) {
- range[i].end = range[j].end;
- range[i].start = end + 1;
- } else {
- printk(KERN_ERR "run of slot in ranges\n");
- }
- range[j].end = start - 1;
- continue;
- }
- }
-}
-
-static void __init update_res(struct pci_root_info *info, size_t start,
- size_t end, unsigned long flags, int merge)
-{
- int i;
- struct resource *res;
-
- if (!merge)
- goto addit;
-
- /* try to merge it with old one */
- for (i = 0; i < info->res_num; i++) {
- size_t final_start, final_end;
- size_t common_start, common_end;
-
- res = &info->res[i];
- if (res->flags != flags)
- continue;
-
- common_start = max((size_t)res->start, start);
- common_end = min((size_t)res->end, end);
- if (common_start > common_end + 1)
- continue;
-
- final_start = min((size_t)res->start, start);
- final_end = max((size_t)res->end, end);
-
- res->start = final_start;
- res->end = final_end;
- return;
- }
-
-addit:
-
- /* need to add that */
- if (info->res_num >= RES_NUM)
- return;
-
- res = &info->res[info->res_num];
- res->name = info->name;
- res->flags = flags;
- res->start = start;
- res->end = end;
- res->child = NULL;
- info->res_num++;
-}
-
-struct pci_hostbridge_probe {
- u32 bus;
- u32 slot;
- u32 vendor;
- u32 device;
-};
-
-static struct pci_hostbridge_probe pci_probes[] __initdata = {
- { 0, 0x18, PCI_VENDOR_ID_AMD, 0x1100 },
- { 0, 0x18, PCI_VENDOR_ID_AMD, 0x1200 },
- { 0xff, 0, PCI_VENDOR_ID_AMD, 0x1200 },
- { 0, 0x18, PCI_VENDOR_ID_AMD, 0x1300 },
-};
-
-static u64 __initdata fam10h_mmconf_start;
-static u64 __initdata fam10h_mmconf_end;
-static void __init get_pci_mmcfg_amd_fam10h_range(void)
-{
- u32 address;
- u64 base, msr;
- unsigned segn_busn_bits;
-
- /* assume all cpus from fam10h have mmconf */
- if (boot_cpu_data.x86 < 0x10)
- return;
-
- address = MSR_FAM10H_MMIO_CONF_BASE;
- rdmsrl(address, msr);
-
- /* mmconfig is not enable */
- if (!(msr & FAM10H_MMIO_CONF_ENABLE))
- return;
-
- base = msr & (FAM10H_MMIO_CONF_BASE_MASK<<FAM10H_MMIO_CONF_BASE_SHIFT);
-
- segn_busn_bits = (msr >> FAM10H_MMIO_CONF_BUSRANGE_SHIFT) &
- FAM10H_MMIO_CONF_BUSRANGE_MASK;
-
- fam10h_mmconf_start = base;
- fam10h_mmconf_end = base + (1ULL<<(segn_busn_bits + 20)) - 1;
-}
-
-/**
- * early_fill_mp_bus_to_node()
- * called before pcibios_scan_root and pci_scan_bus
- * fills the mp_bus_to_cpumask array based according to the LDT Bus Number
- * Registers found in the K8 northbridge
- */
-static int __init early_fill_mp_bus_info(void)
-{
- int i;
- int j;
- unsigned bus;
- unsigned slot;
- int found;
- int node;
- int link;
- int def_node;
- int def_link;
- struct pci_root_info *info;
- u32 reg;
- struct resource *res;
- size_t start;
- size_t end;
- struct res_range range[RANGE_NUM];
- u64 val;
- u32 address;
-
-#ifdef CONFIG_NUMA
- for (i = 0; i < BUS_NR; i++)
- mp_bus_to_node[i] = -1;
-#endif
-
- if (!early_pci_allowed())
- return -1;
-
- found = 0;
- for (i = 0; i < ARRAY_SIZE(pci_probes); i++) {
- u32 id;
- u16 device;
- u16 vendor;
-
- bus = pci_probes[i].bus;
- slot = pci_probes[i].slot;
- id = read_pci_config(bus, slot, 0, PCI_VENDOR_ID);
-
- vendor = id & 0xffff;
- device = (id>>16) & 0xffff;
- if (pci_probes[i].vendor == vendor &&
- pci_probes[i].device == device) {
- found = 1;
- break;
- }
- }
-
- if (!found)
- return 0;
-
- pci_root_num = 0;
- for (i = 0; i < 4; i++) {
- int min_bus;
- int max_bus;
- reg = read_pci_config(bus, slot, 1, 0xe0 + (i << 2));
-
- /* Check if that register is enabled for bus range */
- if ((reg & 7) != 3)
- continue;
-
- min_bus = (reg >> 16) & 0xff;
- max_bus = (reg >> 24) & 0xff;
- node = (reg >> 4) & 0x07;
-#ifdef CONFIG_NUMA
- for (j = min_bus; j <= max_bus; j++)
- mp_bus_to_node[j] = (unsigned char) node;
-#endif
- link = (reg >> 8) & 0x03;
-
- info = &pci_root_info[pci_root_num];
- info->bus_min = min_bus;
- info->bus_max = max_bus;
- info->node = node;
- info->link = link;
- sprintf(info->name, "PCI Bus #%02x", min_bus);
- pci_root_num++;
- }
-
- /* get the default node and link for left over res */
- reg = read_pci_config(bus, slot, 0, 0x60);
- def_node = (reg >> 8) & 0x07;
- reg = read_pci_config(bus, slot, 0, 0x64);
- def_link = (reg >> 8) & 0x03;
-
- memset(range, 0, sizeof(range));
- range[0].end = 0xffff;
- /* io port resource */
- for (i = 0; i < 4; i++) {
- reg = read_pci_config(bus, slot, 1, 0xc0 + (i << 3));
- if (!(reg & 3))
- continue;
-
- start = reg & 0xfff000;
- reg = read_pci_config(bus, slot, 1, 0xc4 + (i << 3));
- node = reg & 0x07;
- link = (reg >> 4) & 0x03;
- end = (reg & 0xfff000) | 0xfff;
-
- /* find the position */
- for (j = 0; j < pci_root_num; j++) {
- info = &pci_root_info[j];
- if (info->node == node && info->link == link)
- break;
- }
- if (j == pci_root_num)
- continue; /* not found */
-
- info = &pci_root_info[j];
- printk(KERN_DEBUG "node %d link %d: io port [%llx, %llx]\n",
- node, link, (u64)start, (u64)end);
-
- /* kernel only handle 16 bit only */
- if (end > 0xffff)
- end = 0xffff;
- update_res(info, start, end, IORESOURCE_IO, 1);
- update_range(range, start, end);
- }
- /* add left over io port range to def node/link, [0, 0xffff] */
- /* find the position */
- for (j = 0; j < pci_root_num; j++) {
- info = &pci_root_info[j];
- if (info->node == def_node && info->link == def_link)
- break;
- }
- if (j < pci_root_num) {
- info = &pci_root_info[j];
- for (i = 0; i < RANGE_NUM; i++) {
- if (!range[i].end)
- continue;
-
- update_res(info, range[i].start, range[i].end,
- IORESOURCE_IO, 1);
- }
- }
-
- memset(range, 0, sizeof(range));
- /* 0xfd00000000-0xffffffffff for HT */
- range[0].end = (0xfdULL<<32) - 1;
-
- /* need to take out [0, TOM) for RAM*/
- address = MSR_K8_TOP_MEM1;
- rdmsrl(address, val);
- end = (val & 0xffffff8000000ULL);
- printk(KERN_INFO "TOM: %016lx aka %ldM\n", end, end>>20);
- if (end < (1ULL<<32))
- update_range(range, 0, end - 1);
-
- /* get mmconfig */
- get_pci_mmcfg_amd_fam10h_range();
- /* need to take out mmconf range */
- if (fam10h_mmconf_end) {
- printk(KERN_DEBUG "Fam 10h mmconf [%llx, %llx]\n", fam10h_mmconf_start, fam10h_mmconf_end);
- update_range(range, fam10h_mmconf_start, fam10h_mmconf_end);
- }
-
- /* mmio resource */
- for (i = 0; i < 8; i++) {
- reg = read_pci_config(bus, slot, 1, 0x80 + (i << 3));
- if (!(reg & 3))
- continue;
-
- start = reg & 0xffffff00; /* 39:16 on 31:8*/
- start <<= 8;
- reg = read_pci_config(bus, slot, 1, 0x84 + (i << 3));
- node = reg & 0x07;
- link = (reg >> 4) & 0x03;
- end = (reg & 0xffffff00);
- end <<= 8;
- end |= 0xffff;
-
- /* find the position */
- for (j = 0; j < pci_root_num; j++) {
- info = &pci_root_info[j];
- if (info->node == node && info->link == link)
- break;
- }
- if (j == pci_root_num)
- continue; /* not found */
-
- info = &pci_root_info[j];
-
- printk(KERN_DEBUG "node %d link %d: mmio [%llx, %llx]",
- node, link, (u64)start, (u64)end);
- /*
- * some sick allocation would have range overlap with fam10h
- * mmconf range, so need to update start and end.
- */
- if (fam10h_mmconf_end) {
- int changed = 0;
- u64 endx = 0;
- if (start >= fam10h_mmconf_start &&
- start <= fam10h_mmconf_end) {
- start = fam10h_mmconf_end + 1;
- changed = 1;
- }
-
- if (end >= fam10h_mmconf_start &&
- end <= fam10h_mmconf_end) {
- end = fam10h_mmconf_start - 1;
- changed = 1;
- }
-
- if (start < fam10h_mmconf_start &&
- end > fam10h_mmconf_end) {
- /* we got a hole */
- endx = fam10h_mmconf_start - 1;
- update_res(info, start, endx, IORESOURCE_MEM, 0);
- update_range(range, start, endx);
- printk(KERN_CONT " ==> [%llx, %llx]", (u64)start, endx);
- start = fam10h_mmconf_end + 1;
- changed = 1;
- }
- if (changed) {
- if (start <= end) {
- printk(KERN_CONT " %s [%llx, %llx]", endx?"and":"==>", (u64)start, (u64)end);
- } else {
- printk(KERN_CONT "%s\n", endx?"":" ==> none");
- continue;
- }
- }
- }
-
- update_res(info, start, end, IORESOURCE_MEM, 1);
- update_range(range, start, end);
- printk(KERN_CONT "\n");
- }
-
- /* need to take out [4G, TOM2) for RAM*/
- /* SYS_CFG */
- address = MSR_K8_SYSCFG;
- rdmsrl(address, val);
- /* TOP_MEM2 is enabled? */
- if (val & (1<<21)) {
- /* TOP_MEM2 */
- address = MSR_K8_TOP_MEM2;
- rdmsrl(address, val);
- end = (val & 0xffffff8000000ULL);
- printk(KERN_INFO "TOM2: %016lx aka %ldM\n", end, end>>20);
- update_range(range, 1ULL<<32, end - 1);
- }
-
- /*
- * add left over mmio range to def node/link ?
- * that is tricky, just record range in from start_min to 4G
- */
- for (j = 0; j < pci_root_num; j++) {
- info = &pci_root_info[j];
- if (info->node == def_node && info->link == def_link)
- break;
- }
- if (j < pci_root_num) {
- info = &pci_root_info[j];
-
- for (i = 0; i < RANGE_NUM; i++) {
- if (!range[i].end)
- continue;
-
- update_res(info, range[i].start, range[i].end,
- IORESOURCE_MEM, 1);
- }
- }
-
- for (i = 0; i < pci_root_num; i++) {
- int res_num;
- int busnum;
-
- info = &pci_root_info[i];
- res_num = info->res_num;
- busnum = info->bus_min;
- printk(KERN_DEBUG "bus: [%02x,%02x] on node %x link %x\n",
- info->bus_min, info->bus_max, info->node, info->link);
- for (j = 0; j < res_num; j++) {
- res = &info->res[j];
- printk(KERN_DEBUG "bus: %02x index %x %s: [%llx, %llx]\n",
- busnum, j,
- (res->flags & IORESOURCE_IO)?"io port":"mmio",
- res->start, res->end);
- }
- }
-
- return 0;
-}
-
-postcore_initcall(early_fill_mp_bus_info);
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