x86/pci: Renaming k8-bus_64.c to amd_bus.c

The name fits better since this is code not only for K8.

Signed-off-by: Robert Richter <robert.richter@amd.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

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);