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authorZhao, Yu <yu.zhao@intel.com>2008-10-13 19:18:07 +0800
committerJesse Barnes <jbarnes@virtuousgeek.org>2008-10-20 10:54:29 -0700
commit557848c3c03ad1d1e66cb3b5b06698e3a9ebc33c (patch)
treef244d69c332d3bbbef9f924fb1f0892abba7e1ff
parent022edd86d7c864bc8fadc3c8ac4e6a464472ab05 (diff)
downloadlinux-linaro-stable-557848c3c03ad1d1e66cb3b5b06698e3a9ebc33c.tar.gz
PCI: replace cfg space size (256/4096) by macros.
This is a cleanup that changes all PCI configuration space size representations to the macros (PCI_CFG_SPACE_SIZE and PCI_CFG_SPACE_EXP_SIZE). And the macros are also moved from drivers/pci/probe.c to drivers/pci/pci.h. Signed-off-by: Yu Zhao <yu.zhao@intel.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
-rw-r--r--drivers/pci/pci-sysfs.c10
-rw-r--r--drivers/pci/pci.c11
-rw-r--r--drivers/pci/pci.h7
-rw-r--r--drivers/pci/probe.c5
4 files changed, 21 insertions, 12 deletions
diff --git a/drivers/pci/pci-sysfs.c b/drivers/pci/pci-sysfs.c
index 77baff022f71..00a9947cb7cc 100644
--- a/drivers/pci/pci-sysfs.c
+++ b/drivers/pci/pci-sysfs.c
@@ -715,7 +715,7 @@ static struct bin_attribute pci_config_attr = {
.name = "config",
.mode = S_IRUGO | S_IWUSR,
},
- .size = 256,
+ .size = PCI_CFG_SPACE_SIZE,
.read = pci_read_config,
.write = pci_write_config,
};
@@ -725,7 +725,7 @@ static struct bin_attribute pcie_config_attr = {
.name = "config",
.mode = S_IRUGO | S_IWUSR,
},
- .size = 4096,
+ .size = PCI_CFG_SPACE_EXP_SIZE,
.read = pci_read_config,
.write = pci_write_config,
};
@@ -743,7 +743,7 @@ int __must_check pci_create_sysfs_dev_files (struct pci_dev *pdev)
if (!sysfs_initialized)
return -EACCES;
- if (pdev->cfg_size < 4096)
+ if (pdev->cfg_size < PCI_CFG_SPACE_EXP_SIZE)
retval = sysfs_create_bin_file(&pdev->dev.kobj, &pci_config_attr);
else
retval = sysfs_create_bin_file(&pdev->dev.kobj, &pcie_config_attr);
@@ -814,7 +814,7 @@ err_vpd:
kfree(pdev->vpd->attr);
}
err_config_file:
- if (pdev->cfg_size < 4096)
+ if (pdev->cfg_size < PCI_CFG_SPACE_EXP_SIZE)
sysfs_remove_bin_file(&pdev->dev.kobj, &pci_config_attr);
else
sysfs_remove_bin_file(&pdev->dev.kobj, &pcie_config_attr);
@@ -839,7 +839,7 @@ void pci_remove_sysfs_dev_files(struct pci_dev *pdev)
sysfs_remove_bin_file(&pdev->dev.kobj, pdev->vpd->attr);
kfree(pdev->vpd->attr);
}
- if (pdev->cfg_size < 4096)
+ if (pdev->cfg_size < PCI_CFG_SPACE_EXP_SIZE)
sysfs_remove_bin_file(&pdev->dev.kobj, &pci_config_attr);
else
sysfs_remove_bin_file(&pdev->dev.kobj, &pcie_config_attr);
diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index 09dc893c81db..553ca6657955 100644
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -213,10 +213,13 @@ int pci_bus_find_capability(struct pci_bus *bus, unsigned int devfn, int cap)
int pci_find_ext_capability(struct pci_dev *dev, int cap)
{
u32 header;
- int ttl = 480; /* 3840 bytes, minimum 8 bytes per capability */
- int pos = 0x100;
+ int ttl;
+ int pos = PCI_CFG_SPACE_SIZE;
- if (dev->cfg_size <= 256)
+ /* minimum 8 bytes per capability */
+ ttl = (PCI_CFG_SPACE_EXP_SIZE - PCI_CFG_SPACE_SIZE) / 8;
+
+ if (dev->cfg_size <= PCI_CFG_SPACE_SIZE)
return 0;
if (pci_read_config_dword(dev, pos, &header) != PCIBIOS_SUCCESSFUL)
@@ -234,7 +237,7 @@ int pci_find_ext_capability(struct pci_dev *dev, int cap)
return pos;
pos = PCI_EXT_CAP_NEXT(header);
- if (pos < 0x100)
+ if (pos < PCI_CFG_SPACE_SIZE)
break;
if (pci_read_config_dword(dev, pos, &header) != PCIBIOS_SUCCESSFUL)
diff --git a/drivers/pci/pci.h b/drivers/pci/pci.h
index 4723b12fb39a..601abdc8dd9f 100644
--- a/drivers/pci/pci.h
+++ b/drivers/pci/pci.h
@@ -1,3 +1,9 @@
+#ifndef DRIVERS_PCI_H
+#define DRIVERS_PCI_H
+
+#define PCI_CFG_SPACE_SIZE 256
+#define PCI_CFG_SPACE_EXP_SIZE 4096
+
/* Functions internal to the PCI core code */
extern int pci_uevent(struct device *dev, struct kobj_uevent_env *env);
@@ -145,3 +151,4 @@ struct pci_slot_attribute {
};
#define to_pci_slot_attr(s) container_of(s, struct pci_slot_attribute, attr)
+#endif /* DRIVERS_PCI_H */
diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c
index 7aa71636dd3c..f6754e87f046 100644
--- a/drivers/pci/probe.c
+++ b/drivers/pci/probe.c
@@ -14,8 +14,6 @@
#define CARDBUS_LATENCY_TIMER 176 /* secondary latency timer */
#define CARDBUS_RESERVE_BUSNR 3
-#define PCI_CFG_SPACE_SIZE 256
-#define PCI_CFG_SPACE_EXP_SIZE 4096
/* Ugh. Need to stop exporting this to modules. */
LIST_HEAD(pci_root_buses);
@@ -887,8 +885,9 @@ static void set_pcie_port_type(struct pci_dev *pdev)
int pci_cfg_space_size_ext(struct pci_dev *dev)
{
u32 status;
+ int pos = PCI_CFG_SPACE_SIZE;
- if (pci_read_config_dword(dev, 256, &status) != PCIBIOS_SUCCESSFUL)
+ if (pci_read_config_dword(dev, pos, &status) != PCIBIOS_SUCCESSFUL)
goto fail;
if (status == 0xffffffff)
goto fail;