1 files changed, 0 insertions, 189 deletions
diff --git a/arch/x86_64/pci/mmconfig.c b/arch/x86_64/pci/mmconfig.c
deleted file mode 100644
index b4a3fe4ec24..00000000000
--- a/arch/x86_64/pci/mmconfig.c
+++ /dev/null
@@ -1,189 +0,0 @@
-/*
- * mmconfig.c - Low-level direct PCI config space access via MMCONFIG
- * 
- * This is an 64bit optimized version that always keeps the full mmconfig
- * space mapped. This allows lockless config space operation.
- */
-
-#include <linux/pci.h>
-#include <linux/init.h>
-#include <linux/acpi.h>
-#include <linux/bitmap.h>
-#include "pci.h"
-
-#define MMCONFIG_APER_SIZE (256*1024*1024)
-
-static DECLARE_BITMAP(fallback_slots, 32);
-
-/* Static virtual mapping of the MMCONFIG aperture */
-struct mmcfg_virt {
-	struct acpi_table_mcfg_config *cfg;
-	char __iomem *virt;
-};
-static struct mmcfg_virt *pci_mmcfg_virt;
-
-static char __iomem *get_virt(unsigned int seg, unsigned bus)
-{
-	int cfg_num = -1;
-	struct acpi_table_mcfg_config *cfg;
-
-	while (1) {
-		++cfg_num;
-		if (cfg_num >= pci_mmcfg_config_num)
-			break;
-		cfg = pci_mmcfg_virt[cfg_num].cfg;
-		if (cfg->pci_segment_group_number != seg)
-			continue;
-		if ((cfg->start_bus_number <= bus) &&
-		    (cfg->end_bus_number >= bus))
-			return pci_mmcfg_virt[cfg_num].virt;
-	}
-
-	/* Handle more broken MCFG tables on Asus etc.
-	   They only contain a single entry for bus 0-0. Assume
- 	   this applies to all busses. */
-	cfg = &pci_mmcfg_config[0];
-	if (pci_mmcfg_config_num == 1 &&
-		cfg->pci_segment_group_number == 0 &&
-		(cfg->start_bus_number | cfg->end_bus_number) == 0)
-		return pci_mmcfg_virt[0].virt;
-
-	/* Fall back to type 0 */
-	return 0;
-}
-
-static char __iomem *pci_dev_base(unsigned int seg, unsigned int bus, unsigned int devfn)
-{
-	char __iomem *addr;
-	if (seg == 0 && bus == 0 && test_bit(PCI_SLOT(devfn), &fallback_slots))
-		return NULL;
-	addr = get_virt(seg, bus);
-	if (!addr)
-		return NULL;
- 	return addr + ((bus << 20) | (devfn << 12));
-}
-
-static int pci_mmcfg_read(unsigned int seg, unsigned int bus,
-			  unsigned int devfn, int reg, int len, u32 *value)
-{
-	char __iomem *addr;
-
-	/* Why do we have this when nobody checks it. How about a BUG()!? -AK */
-	if (unlikely(!value || (bus > 255) || (devfn > 255) || (reg > 4095)))
-		return -EINVAL;
-
-	addr = pci_dev_base(seg, bus, devfn);
-	if (!addr)
-		return pci_conf1_read(seg,bus,devfn,reg,len,value);
-
-	switch (len) {
-	case 1:
-		*value = readb(addr + reg);
-		break;
-	case 2:
-		*value = readw(addr + reg);
-		break;
-	case 4:
-		*value = readl(addr + reg);
-		break;
-	}
-
-	return 0;
-}
-
-static int pci_mmcfg_write(unsigned int seg, unsigned int bus,
-			   unsigned int devfn, int reg, int len, u32 value)
-{
-	char __iomem *addr;
-
-	/* Why do we have this when nobody checks it. How about a BUG()!? -AK */
-	if (unlikely((bus > 255) || (devfn > 255) || (reg > 4095)))
-		return -EINVAL;
-
-	addr = pci_dev_base(seg, bus, devfn);
-	if (!addr)
-		return pci_conf1_write(seg,bus,devfn,reg,len,value);
-
-	switch (len) {
-	case 1:
-		writeb(value, addr + reg);
-		break;
-	case 2:
-		writew(value, addr + reg);
-		break;
-	case 4:
-		writel(value, addr + reg);
-		break;
-	}
-
-	return 0;
-}
-
-static struct pci_raw_ops pci_mmcfg = {
-	.read =		pci_mmcfg_read,
-	.write =	pci_mmcfg_write,
-};
-
-/* K8 systems have some devices (typically in the builtin northbridge)
-   that are only accessible using type1
-   Normally this can be expressed in the MCFG by not listing them
-   and assigning suitable _SEGs, but this isn't implemented in some BIOS.
-   Instead try to discover all devices on bus 0 that are unreachable using MM
-   and fallback for them.
-   We only do this for bus 0/seg 0 */
-static __init void unreachable_devices(void)
-{
-	int i;
-	for (i = 0; i < 32; i++) {
-		u32 val1;
-		char __iomem *addr;
-
-		pci_conf1_read(0, 0, PCI_DEVFN(i,0), 0, 4, &val1);
-		if (val1 == 0xffffffff)
-			continue;
-		addr = pci_dev_base(0, 0, PCI_DEVFN(i, 0));
-		if (addr == NULL|| readl(addr) != val1) {
-			set_bit(i, &fallback_slots);
-		}
-	}
-}
-
-static int __init pci_mmcfg_init(void)
-{
-	int i;
-
-	if ((pci_probe & PCI_PROBE_MMCONF) == 0)
-		return 0;
-
-	acpi_table_parse(ACPI_MCFG, acpi_parse_mcfg);
-	if ((pci_mmcfg_config_num == 0) ||
-	    (pci_mmcfg_config == NULL) ||
-	    (pci_mmcfg_config[0].base_address == 0))
-		return 0;
-
-	/* RED-PEN i386 doesn't do _nocache right now */
-	pci_mmcfg_virt = kmalloc(sizeof(*pci_mmcfg_virt) * pci_mmcfg_config_num, GFP_KERNEL);
-	if (pci_mmcfg_virt == NULL) {
-		printk("PCI: Can not allocate memory for mmconfig structures\n");
-		return 0;
-	}
-	for (i = 0; i < pci_mmcfg_config_num; ++i) {
-		pci_mmcfg_virt[i].cfg = &pci_mmcfg_config[i];
-		pci_mmcfg_virt[i].virt = ioremap_nocache(pci_mmcfg_config[i].base_address, MMCONFIG_APER_SIZE);
-		if (!pci_mmcfg_virt[i].virt) {
-			printk("PCI: Cannot map mmconfig aperture for segment %d\n",
-			       pci_mmcfg_config[i].pci_segment_group_number);
-			return 0;
-		}
-		printk(KERN_INFO "PCI: Using MMCONFIG at %x\n", pci_mmcfg_config[i].base_address);
-	}
-
-	unreachable_devices();
-
-	raw_pci_ops = &pci_mmcfg;
-	pci_probe = (pci_probe & ~PCI_PROBE_MASK) | PCI_PROBE_MMCONF;
-
-	return 0;
-}
-
-arch_initcall(pci_mmcfg_init);