Change pci_raw_ops to pci_raw_read/write
We want to allow different implementations of pci_raw_ops for standard
and extended config space on x86. Rather than clutter generic code with
knowledge of this, we make pci_raw_ops private to x86 and use it to
implement the new raw interface -- raw_pci_read() and raw_pci_write().
Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/arch/ia64/pci/pci.c b/arch/ia64/pci/pci.c
index 488e48a..8fd7e82 100644
--- a/arch/ia64/pci/pci.c
+++ b/arch/ia64/pci/pci.c
@@ -43,8 +43,7 @@
#define PCI_SAL_EXT_ADDRESS(seg, bus, devfn, reg) \
(((u64) seg << 28) | (bus << 20) | (devfn << 12) | (reg))
-static int
-pci_sal_read (unsigned int seg, unsigned int bus, unsigned int devfn,
+int raw_pci_read(unsigned int seg, unsigned int bus, unsigned int devfn,
int reg, int len, u32 *value)
{
u64 addr, data = 0;
@@ -68,8 +67,7 @@
return 0;
}
-static int
-pci_sal_write (unsigned int seg, unsigned int bus, unsigned int devfn,
+int raw_pci_write(unsigned int seg, unsigned int bus, unsigned int devfn,
int reg, int len, u32 value)
{
u64 addr;
@@ -91,24 +89,17 @@
return 0;
}
-static struct pci_raw_ops pci_sal_ops = {
- .read = pci_sal_read,
- .write = pci_sal_write
-};
-
-struct pci_raw_ops *raw_pci_ops = &pci_sal_ops;
-
-static int
-pci_read (struct pci_bus *bus, unsigned int devfn, int where, int size, u32 *value)
+static int pci_read(struct pci_bus *bus, unsigned int devfn, int where,
+ int size, u32 *value)
{
- return raw_pci_ops->read(pci_domain_nr(bus), bus->number,
+ return raw_pci_read(pci_domain_nr(bus), bus->number,
devfn, where, size, value);
}
-static int
-pci_write (struct pci_bus *bus, unsigned int devfn, int where, int size, u32 value)
+static int pci_write(struct pci_bus *bus, unsigned int devfn, int where,
+ int size, u32 value)
{
- return raw_pci_ops->write(pci_domain_nr(bus), bus->number,
+ return raw_pci_write(pci_domain_nr(bus), bus->number,
devfn, where, size, value);
}
diff --git a/arch/ia64/sn/pci/tioce_provider.c b/arch/ia64/sn/pci/tioce_provider.c
index e1a3e19..999f14f 100644
--- a/arch/ia64/sn/pci/tioce_provider.c
+++ b/arch/ia64/sn/pci/tioce_provider.c
@@ -752,13 +752,13 @@
* Determine the secondary bus number of the port2 logical PPB.
* This is used to decide whether a given pci device resides on
* port1 or port2. Note: We don't have enough plumbing set up
- * here to use pci_read_config_xxx() so use the raw_pci_ops vector.
+ * here to use pci_read_config_xxx() so use raw_pci_read().
*/
seg = tioce_common->ce_pcibus.bs_persist_segment;
bus = tioce_common->ce_pcibus.bs_persist_busnum;
- raw_pci_ops->read(seg, bus, PCI_DEVFN(2, 0), PCI_SECONDARY_BUS, 1,&tmp);
+ raw_pci_read(seg, bus, PCI_DEVFN(2, 0), PCI_SECONDARY_BUS, 1,&tmp);
tioce_kern->ce_port1_secondary = (u8) tmp;
/*
@@ -799,11 +799,11 @@
/* mem base/limit */
- raw_pci_ops->read(seg, bus, PCI_DEVFN(dev, 0),
+ raw_pci_read(seg, bus, PCI_DEVFN(dev, 0),
PCI_MEMORY_BASE, 2, &tmp);
base = (u64)tmp << 16;
- raw_pci_ops->read(seg, bus, PCI_DEVFN(dev, 0),
+ raw_pci_read(seg, bus, PCI_DEVFN(dev, 0),
PCI_MEMORY_LIMIT, 2, &tmp);
limit = (u64)tmp << 16;
limit |= 0xfffffUL;
@@ -817,21 +817,21 @@
* attributes.
*/
- raw_pci_ops->read(seg, bus, PCI_DEVFN(dev, 0),
+ raw_pci_read(seg, bus, PCI_DEVFN(dev, 0),
PCI_PREF_MEMORY_BASE, 2, &tmp);
base = ((u64)tmp & PCI_PREF_RANGE_MASK) << 16;
- raw_pci_ops->read(seg, bus, PCI_DEVFN(dev, 0),
+ raw_pci_read(seg, bus, PCI_DEVFN(dev, 0),
PCI_PREF_BASE_UPPER32, 4, &tmp);
base |= (u64)tmp << 32;
- raw_pci_ops->read(seg, bus, PCI_DEVFN(dev, 0),
+ raw_pci_read(seg, bus, PCI_DEVFN(dev, 0),
PCI_PREF_MEMORY_LIMIT, 2, &tmp);
limit = ((u64)tmp & PCI_PREF_RANGE_MASK) << 16;
limit |= 0xfffffUL;
- raw_pci_ops->read(seg, bus, PCI_DEVFN(dev, 0),
+ raw_pci_read(seg, bus, PCI_DEVFN(dev, 0),
PCI_PREF_LIMIT_UPPER32, 4, &tmp);
limit |= (u64)tmp << 32;
diff --git a/arch/x86/kernel/quirks.c b/arch/x86/kernel/quirks.c
index 6ba33ca..1941482 100644
--- a/arch/x86/kernel/quirks.c
+++ b/arch/x86/kernel/quirks.c
@@ -27,7 +27,7 @@
pci_write_config_byte(dev, 0xf4, config|0x2);
/* read xTPR register */
- raw_pci_ops->read(0, 0, 0x40, 0x4c, 2, &word);
+ raw_pci_read(0, 0, 0x40, 0x4c, 2, &word);
if (!(word & (1 << 13))) {
dev_info(&dev->dev, "Intel E7520/7320/7525 detected; "
diff --git a/arch/x86/pci/common.c b/arch/x86/pci/common.c
index 52deabc7..b7c67a1 100644
--- a/arch/x86/pci/common.c
+++ b/arch/x86/pci/common.c
@@ -26,16 +26,37 @@
unsigned long pirq_table_addr;
struct pci_bus *pci_root_bus;
struct pci_raw_ops *raw_pci_ops;
+struct pci_raw_ops *raw_pci_ext_ops;
+
+int raw_pci_read(unsigned int domain, unsigned int bus, unsigned int devfn,
+ int reg, int len, u32 *val)
+{
+ if (reg < 256 && raw_pci_ops)
+ return raw_pci_ops->read(domain, bus, devfn, reg, len, val);
+ if (raw_pci_ext_ops)
+ return raw_pci_ext_ops->read(domain, bus, devfn, reg, len, val);
+ return -EINVAL;
+}
+
+int raw_pci_write(unsigned int domain, unsigned int bus, unsigned int devfn,
+ int reg, int len, u32 val)
+{
+ if (reg < 256 && raw_pci_ops)
+ return raw_pci_ops->write(domain, bus, devfn, reg, len, val);
+ if (raw_pci_ext_ops)
+ return raw_pci_ext_ops->write(domain, bus, devfn, reg, len, val);
+ return -EINVAL;
+}
static int pci_read(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 *value)
{
- return raw_pci_ops->read(pci_domain_nr(bus), bus->number,
+ return raw_pci_read(pci_domain_nr(bus), bus->number,
devfn, where, size, value);
}
static int pci_write(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 value)
{
- return raw_pci_ops->write(pci_domain_nr(bus), bus->number,
+ return raw_pci_write(pci_domain_nr(bus), bus->number,
devfn, where, size, value);
}
diff --git a/arch/x86/pci/direct.c b/arch/x86/pci/direct.c
index 431c9a5..42f3e4c 100644
--- a/arch/x86/pci/direct.c
+++ b/arch/x86/pci/direct.c
@@ -14,7 +14,7 @@
#define PCI_CONF1_ADDRESS(bus, devfn, reg) \
(0x80000000 | (bus << 16) | (devfn << 8) | (reg & ~3))
-int pci_conf1_read(unsigned int seg, unsigned int bus,
+static int pci_conf1_read(unsigned int seg, unsigned int bus,
unsigned int devfn, int reg, int len, u32 *value)
{
unsigned long flags;
@@ -45,7 +45,7 @@
return 0;
}
-int pci_conf1_write(unsigned int seg, unsigned int bus,
+static int pci_conf1_write(unsigned int seg, unsigned int bus,
unsigned int devfn, int reg, int len, u32 value)
{
unsigned long flags;
diff --git a/arch/x86/pci/fixup.c b/arch/x86/pci/fixup.c
index 74d30ff..a5ef5f5 100644
--- a/arch/x86/pci/fixup.c
+++ b/arch/x86/pci/fixup.c
@@ -215,7 +215,8 @@
static int quirk_pcie_aspm_read(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 *value)
{
- return raw_pci_ops->read(0, bus->number, devfn, where, size, value);
+ return raw_pci_read(pci_domain_nr(bus), bus->number,
+ devfn, where, size, value);
}
/*
@@ -231,7 +232,8 @@
if ((offset) && (where == offset))
value = value & 0xfffffffc;
- return raw_pci_ops->write(0, bus->number, devfn, where, size, value);
+ return raw_pci_write(pci_domain_nr(bus), bus->number,
+ devfn, where, size, value);
}
static struct pci_ops quirk_pcie_aspm_ops = {
diff --git a/arch/x86/pci/legacy.c b/arch/x86/pci/legacy.c
index 5565d70..e041ced 100644
--- a/arch/x86/pci/legacy.c
+++ b/arch/x86/pci/legacy.c
@@ -22,7 +22,7 @@
if (pci_find_bus(0, n))
continue;
for (devfn = 0; devfn < 256; devfn += 8) {
- if (!raw_pci_ops->read(0, n, devfn, PCI_VENDOR_ID, 2, &l) &&
+ if (!raw_pci_read(0, n, devfn, PCI_VENDOR_ID, 2, &l) &&
l != 0x0000 && l != 0xffff) {
DBG("Found device at %02x:%02x [%04x]\n", n, devfn, l);
printk(KERN_INFO "PCI: Discovered peer bus %02x\n", n);
diff --git a/arch/x86/pci/mmconfig-shared.c b/arch/x86/pci/mmconfig-shared.c
index 6b521d3..8d54df4 100644
--- a/arch/x86/pci/mmconfig-shared.c
+++ b/arch/x86/pci/mmconfig-shared.c
@@ -28,7 +28,7 @@
static const char __init *pci_mmcfg_e7520(void)
{
u32 win;
- pci_conf1_read(0, 0, PCI_DEVFN(0,0), 0xce, 2, &win);
+ pci_direct_conf1.read(0, 0, PCI_DEVFN(0,0), 0xce, 2, &win);
win = win & 0xf000;
if(win == 0x0000 || win == 0xf000)
@@ -53,7 +53,7 @@
pci_mmcfg_config_num = 1;
- pci_conf1_read(0, 0, PCI_DEVFN(0,0), 0x48, 4, &pciexbar);
+ pci_direct_conf1.read(0, 0, PCI_DEVFN(0,0), 0x48, 4, &pciexbar);
/* Enable bit */
if (!(pciexbar & 1))
@@ -118,7 +118,7 @@
int i;
const char *name;
- pci_conf1_read(0, 0, PCI_DEVFN(0,0), 0, 4, &l);
+ pci_direct_conf1.read(0, 0, PCI_DEVFN(0,0), 0, 4, &l);
vendor = l & 0xffff;
device = (l >> 16) & 0xffff;
diff --git a/arch/x86/pci/mmconfig_32.c b/arch/x86/pci/mmconfig_32.c
index 7b75e65..081816a 100644
--- a/arch/x86/pci/mmconfig_32.c
+++ b/arch/x86/pci/mmconfig_32.c
@@ -68,9 +68,6 @@
return -EINVAL;
}
- if (reg < 256)
- return pci_conf1_read(seg,bus,devfn,reg,len,value);
-
base = get_base_addr(seg, bus, devfn);
if (!base)
goto err;
@@ -104,9 +101,6 @@
if ((bus > 255) || (devfn > 255) || (reg > 4095))
return -EINVAL;
- if (reg < 256)
- return pci_conf1_write(seg,bus,devfn,reg,len,value);
-
base = get_base_addr(seg, bus, devfn);
if (!base)
return -EINVAL;
@@ -138,7 +132,7 @@
int __init pci_mmcfg_arch_init(void)
{
- printk(KERN_INFO "PCI: Using MMCONFIG\n");
- raw_pci_ops = &pci_mmcfg;
+ printk(KERN_INFO "PCI: Using MMCONFIG for extended config space\n");
+ raw_pci_ext_ops = &pci_mmcfg;
return 1;
}
diff --git a/arch/x86/pci/mmconfig_64.c b/arch/x86/pci/mmconfig_64.c
index c4cf318..9207fd4 100644
--- a/arch/x86/pci/mmconfig_64.c
+++ b/arch/x86/pci/mmconfig_64.c
@@ -58,9 +58,6 @@
return -EINVAL;
}
- if (reg < 256)
- return pci_conf1_read(seg,bus,devfn,reg,len,value);
-
addr = pci_dev_base(seg, bus, devfn);
if (!addr)
goto err;
@@ -89,9 +86,6 @@
if (unlikely((bus > 255) || (devfn > 255) || (reg > 4095)))
return -EINVAL;
- if (reg < 256)
- return pci_conf1_write(seg,bus,devfn,reg,len,value);
-
addr = pci_dev_base(seg, bus, devfn);
if (!addr)
return -EINVAL;
@@ -150,6 +144,6 @@
return 0;
}
}
- raw_pci_ops = &pci_mmcfg;
+ raw_pci_ext_ops = &pci_mmcfg;
return 1;
}
diff --git a/arch/x86/pci/pci.h b/arch/x86/pci/pci.h
index 36cb44c..3431518 100644
--- a/arch/x86/pci/pci.h
+++ b/arch/x86/pci/pci.h
@@ -85,10 +85,17 @@
extern int (*pcibios_enable_irq)(struct pci_dev *dev);
extern void (*pcibios_disable_irq)(struct pci_dev *dev);
-extern int pci_conf1_write(unsigned int seg, unsigned int bus,
- unsigned int devfn, int reg, int len, u32 value);
-extern int pci_conf1_read(unsigned int seg, unsigned int bus,
- unsigned int devfn, int reg, int len, u32 *value);
+struct pci_raw_ops {
+ int (*read)(unsigned int domain, unsigned int bus, unsigned int devfn,
+ int reg, int len, u32 *val);
+ int (*write)(unsigned int domain, unsigned int bus, unsigned int devfn,
+ int reg, int len, u32 val);
+};
+
+extern struct pci_raw_ops *raw_pci_ops;
+extern struct pci_raw_ops *raw_pci_ext_ops;
+
+extern struct pci_raw_ops pci_direct_conf1;
extern int pci_direct_probe(void);
extern void pci_direct_init(int type);
diff --git a/arch/x86/pci/visws.c b/arch/x86/pci/visws.c
index 8ecb1c7..c2df4e9 100644
--- a/arch/x86/pci/visws.c
+++ b/arch/x86/pci/visws.c
@@ -13,9 +13,6 @@
#include "pci.h"
-
-extern struct pci_raw_ops pci_direct_conf1;
-
static int pci_visws_enable_irq(struct pci_dev *dev) { return 0; }
static void pci_visws_disable_irq(struct pci_dev *dev) { }