x86 pci: remove checking type for mmconfig probe

doesn't need to check if it is type1 or type2, we can use raw_pci_ops
directly.

also make pci_direct_conf1 static again.

anyway is there system with type 2 and mmconf support?

Signed-off-by: Yinghai Lu <yinghai.lu@sun.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

diff --git a/arch/x86/pci/direct.c b/arch/x86/pci/direct.c
index 42f3e4c..21d1e0e 100644 (file)
--- a/arch/x86/pci/direct.c
+++ b/arch/x86/pci/direct.c
@@ -258,7 +258,8 @@ void __init pci_direct_init(int type)
 {
        if (type == 0)
                return;
-       printk(KERN_INFO "PCI: Using configuration type %d\n", type);
+       printk(KERN_INFO "PCI: Using configuration type %d for base access\n",
+                type);
        if (type == 1)
                raw_pci_ops = &pci_direct_conf1;
        else
@@ -275,8 +276,10 @@ int __init pci_direct_probe(void)
        if (!region)
                goto type2;
 
-       if (pci_check_type1())
+       if (pci_check_type1()) {
+               raw_pci_ops = &pci_direct_conf1;
                return 1;
+       }
        release_resource(region);
 
  type2:
@@ -290,7 +293,6 @@ int __init pci_direct_probe(void)
                goto fail2;
 
        if (pci_check_type2()) {
-               printk(KERN_INFO "PCI: Using configuration type 2\n");
                raw_pci_ops = &pci_direct_conf2;
                return 2;
        }

diff --git a/arch/x86/pci/init.c b/arch/x86/pci/init.c
index 2080b04..343c363 100644 (file)
--- a/arch/x86/pci/init.c
+++ b/arch/x86/pci/init.c
@@ -6,14 +6,13 @@
    in the right sequence from here. */
 static __init int pci_access_init(void)
 {
-       int type __maybe_unused = 0;
-
 #ifdef CONFIG_PCI_DIRECT
+       int type = 0;
+
        type = pci_direct_probe();
 #endif
-       pci_mmcfg_early_init(type);
-       if (raw_pci_ops)
-               return 0;
+       pci_mmcfg_early_init();
+
 #ifdef CONFIG_PCI_BIOS
        pci_pcbios_init();
 #endif
@@ -26,7 +25,7 @@ static __init int pci_access_init(void)
 #ifdef CONFIG_PCI_DIRECT
        pci_direct_init(type);
 #endif
-       if (!raw_pci_ops)
+       if (!raw_pci_ops && !raw_pci_ext_ops)
                printk(KERN_ERR
                "PCI: Fatal: No config space access function found\n");
 

diff --git a/arch/x86/pci/mmconfig-shared.c b/arch/x86/pci/mmconfig-shared.c
index 6f68658..bdf6224 100644 (file)
--- a/arch/x86/pci/mmconfig-shared.c
+++ b/arch/x86/pci/mmconfig-shared.c
@@ -28,7 +28,7 @@ static int __initdata pci_mmcfg_resources_inserted;
 static const char __init *pci_mmcfg_e7520(void)
 {
        u32 win;
-       pci_direct_conf1.read(0, 0, PCI_DEVFN(0,0), 0xce, 2, &win);
+       raw_pci_ops->read(0, 0, PCI_DEVFN(0, 0), 0xce, 2, &win);
 
        win = win & 0xf000;
        if(win == 0x0000 || win == 0xf000)
@@ -53,7 +53,7 @@ static const char __init *pci_mmcfg_intel_945(void)
 
        pci_mmcfg_config_num = 1;
 
-       pci_direct_conf1.read(0, 0, PCI_DEVFN(0,0), 0x48, 4, &pciexbar);
+       raw_pci_ops->read(0, 0, PCI_DEVFN(0, 0), 0x48, 4, &pciexbar);
 
        /* Enable bit */
        if (!(pciexbar & 1))
@@ -179,6 +179,9 @@ static int __init pci_mmcfg_check_hostbridge(void)
        int i;
        const char *name;
 
+       if (!raw_pci_ops)
+               return 0;
+
        pci_mmcfg_config_num = 0;
        pci_mmcfg_config = NULL;
        name = NULL;
@@ -186,7 +189,7 @@ static int __init pci_mmcfg_check_hostbridge(void)
        for (i = 0; !name && i < ARRAY_SIZE(pci_mmcfg_probes); i++) {
                bus =  pci_mmcfg_probes[i].bus;
                devfn = pci_mmcfg_probes[i].devfn;
-               pci_direct_conf1.read(0, bus, devfn, 0, 4, &l);
+               raw_pci_ops->read(0, bus, devfn, 0, 4, &l);
                vendor = l & 0xffff;
                device = (l >> 16) & 0xffff;
 
@@ -304,7 +307,7 @@ static int __init is_acpi_reserved(unsigned long start, unsigned long end)
        return mcfg_res.flags;
 }
 
-static void __init pci_mmcfg_reject_broken(int type, int early)
+static void __init pci_mmcfg_reject_broken(int early)
 {
        typeof(pci_mmcfg_config[0]) *cfg;
        int i;
@@ -342,8 +345,8 @@ static void __init pci_mmcfg_reject_broken(int type, int early)
                               " reserved in ACPI motherboard resources\n",
                               cfg->address);
                /* Don't try to do this check unless configuration
-                  type 1 is available. */
-               if (type == 1 && e820_all_mapped(cfg->address,
+                  type 1 is available. how about type 2 ?*/
+               if (raw_pci_ops && e820_all_mapped(cfg->address,
                                                  cfg->address + size - 1,
                                                  E820_RESERVED)) {
                        printk(KERN_NOTICE
@@ -368,7 +371,7 @@ reject:
 
 static int __initdata known_bridge;
 
-void __init __pci_mmcfg_init(int type, int early)
+void __init __pci_mmcfg_init(int early)
 {
        /* MMCONFIG disabled */
        if ((pci_probe & PCI_PROBE_MMCONF) == 0)
@@ -382,14 +385,14 @@ void __init __pci_mmcfg_init(int type, int early)
        if (known_bridge)
                return;
 
-       if (early && type == 1) {
+       if (early) {
                if (pci_mmcfg_check_hostbridge())
                        known_bridge = 1;
        }
 
        if (!known_bridge) {
                acpi_table_parse(ACPI_SIG_MCFG, acpi_parse_mcfg);
-               pci_mmcfg_reject_broken(type, early);
+               pci_mmcfg_reject_broken(early);
        }
 
        if ((pci_mmcfg_config_num == 0) ||
@@ -410,19 +413,14 @@ void __init __pci_mmcfg_init(int type, int early)
        }
 }
 
-void __init pci_mmcfg_early_init(int type)
+void __init pci_mmcfg_early_init(void)
 {
-       __pci_mmcfg_init(type, 1);
+       __pci_mmcfg_init(1);
 }
 
 void __init pci_mmcfg_late_init(void)
 {
-       int type = 0;
-
-       if (pci_probe & PCI_PROBE_CONF1)
-               type = 1;
-
-       __pci_mmcfg_init(type, 0);
+       __pci_mmcfg_init(0);
 }
 
 static int __init pci_mmcfg_late_insert_resources(void)

diff --git a/include/linux/pci.h b/include/linux/pci.h
index 2b8f745..a71954a 100644 (file)
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -1055,10 +1055,10 @@ extern unsigned long pci_cardbus_mem_size;
 extern int pcibios_add_platform_entries(struct pci_dev *dev);
 
 #ifdef CONFIG_PCI_MMCONFIG
-extern void __init pci_mmcfg_early_init(int type);
+extern void __init pci_mmcfg_early_init(void);
 extern void __init pci_mmcfg_late_init(void);
 #else
-static inline void pci_mmcfg_early_init(int type) { }
+static inline void pci_mmcfg_early_init(void) { }
 static inline void pci_mmcfg_late_init(void) { }
 #endif