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-rw-r--r--drivers/pci/access.c4
-rw-r--r--drivers/pci/htirq.c1
-rw-r--r--drivers/pci/pci-sysfs.c12
-rw-r--r--drivers/pci/pci.c70
-rw-r--r--drivers/pci/probe.c6
-rw-r--r--drivers/pci/quirks.c1
-rw-r--r--drivers/pci/setup-bus.c6
-rw-r--r--drivers/pci/slot.c4
8 files changed, 74 insertions, 30 deletions
diff --git a/drivers/pci/access.c b/drivers/pci/access.c
index 64dd7df90e62..0f3706512686 100644
--- a/drivers/pci/access.c
+++ b/drivers/pci/access.c
@@ -87,8 +87,8 @@ EXPORT_SYMBOL(pci_read_vpd);
* pci_write_vpd - Write entry to Vital Product Data
* @dev: pci device struct
* @pos: offset in vpd space
- * @count: number of bytes to read
- * @val: value to write
+ * @count: number of bytes to write
+ * @buf: buffer containing write data
*
*/
ssize_t pci_write_vpd(struct pci_dev *dev, loff_t pos, size_t count, const void *buf)
diff --git a/drivers/pci/htirq.c b/drivers/pci/htirq.c
index bf7d6ce9bbb3..6808d8333ecc 100644
--- a/drivers/pci/htirq.c
+++ b/drivers/pci/htirq.c
@@ -158,6 +158,7 @@ int ht_create_irq(struct pci_dev *dev, int idx)
/**
* ht_destroy_irq - destroy an irq created with ht_create_irq
+ * @irq: irq to be destroyed
*
* This reverses ht_create_irq removing the specified irq from
* existence. The irq should be free before this happens.
diff --git a/drivers/pci/pci-sysfs.c b/drivers/pci/pci-sysfs.c
index a7eb1b46a5a8..85ebd02a64a7 100644
--- a/drivers/pci/pci-sysfs.c
+++ b/drivers/pci/pci-sysfs.c
@@ -492,6 +492,7 @@ write_vpd_attr(struct kobject *kobj, struct bin_attribute *bin_attr,
/**
* pci_read_legacy_io - read byte(s) from legacy I/O port space
* @kobj: kobject corresponding to file to read from
+ * @bin_attr: struct bin_attribute for this file
* @buf: buffer to store results
* @off: offset into legacy I/O port space
* @count: number of bytes to read
@@ -517,6 +518,7 @@ pci_read_legacy_io(struct kobject *kobj, struct bin_attribute *bin_attr,
/**
* pci_write_legacy_io - write byte(s) to legacy I/O port space
* @kobj: kobject corresponding to file to read from
+ * @bin_attr: struct bin_attribute for this file
* @buf: buffer containing value to be written
* @off: offset into legacy I/O port space
* @count: number of bytes to write
@@ -733,9 +735,9 @@ pci_mmap_resource_wc(struct kobject *kobj, struct bin_attribute *attr,
/**
* pci_remove_resource_files - cleanup resource files
- * @dev: dev to cleanup
+ * @pdev: dev to cleanup
*
- * If we created resource files for @dev, remove them from sysfs and
+ * If we created resource files for @pdev, remove them from sysfs and
* free their resources.
*/
static void
@@ -793,9 +795,9 @@ static int pci_create_attr(struct pci_dev *pdev, int num, int write_combine)
/**
* pci_create_resource_files - create resource files in sysfs for @dev
- * @dev: dev in question
+ * @pdev: dev in question
*
- * Walk the resources in @dev creating files for each resource available.
+ * Walk the resources in @pdev creating files for each resource available.
*/
static int pci_create_resource_files(struct pci_dev *pdev)
{
@@ -829,6 +831,7 @@ void __weak pci_remove_resource_files(struct pci_dev *dev) { return; }
/**
* pci_write_rom - used to enable access to the PCI ROM display
* @kobj: kernel object handle
+ * @bin_attr: struct bin_attribute for this file
* @buf: user input
* @off: file offset
* @count: number of byte in input
@@ -852,6 +855,7 @@ pci_write_rom(struct kobject *kobj, struct bin_attribute *bin_attr,
/**
* pci_read_rom - read a PCI ROM
* @kobj: kernel object handle
+ * @bin_attr: struct bin_attribute for this file
* @buf: where to put the data we read from the ROM
* @off: file offset
* @count: number of bytes to read
diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index 16fd0d4c3166..34bf0fdf5047 100644
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -681,11 +681,34 @@ EXPORT_SYMBOL(pci_choose_state);
#define PCI_EXP_SAVE_REGS 7
+#define pcie_cap_has_devctl(type, flags) 1
+#define pcie_cap_has_lnkctl(type, flags) \
+ ((flags & PCI_EXP_FLAGS_VERS) > 1 || \
+ (type == PCI_EXP_TYPE_ROOT_PORT || \
+ type == PCI_EXP_TYPE_ENDPOINT || \
+ type == PCI_EXP_TYPE_LEG_END))
+#define pcie_cap_has_sltctl(type, flags) \
+ ((flags & PCI_EXP_FLAGS_VERS) > 1 || \
+ ((type == PCI_EXP_TYPE_ROOT_PORT) || \
+ (type == PCI_EXP_TYPE_DOWNSTREAM && \
+ (flags & PCI_EXP_FLAGS_SLOT))))
+#define pcie_cap_has_rtctl(type, flags) \
+ ((flags & PCI_EXP_FLAGS_VERS) > 1 || \
+ (type == PCI_EXP_TYPE_ROOT_PORT || \
+ type == PCI_EXP_TYPE_RC_EC))
+#define pcie_cap_has_devctl2(type, flags) \
+ ((flags & PCI_EXP_FLAGS_VERS) > 1)
+#define pcie_cap_has_lnkctl2(type, flags) \
+ ((flags & PCI_EXP_FLAGS_VERS) > 1)
+#define pcie_cap_has_sltctl2(type, flags) \
+ ((flags & PCI_EXP_FLAGS_VERS) > 1)
+
static int pci_save_pcie_state(struct pci_dev *dev)
{
int pos, i = 0;
struct pci_cap_saved_state *save_state;
u16 *cap;
+ u16 flags;
pos = pci_find_capability(dev, PCI_CAP_ID_EXP);
if (pos <= 0)
@@ -698,13 +721,22 @@ static int pci_save_pcie_state(struct pci_dev *dev)
}
cap = (u16 *)&save_state->data[0];
- pci_read_config_word(dev, pos + PCI_EXP_DEVCTL, &cap[i++]);
- pci_read_config_word(dev, pos + PCI_EXP_LNKCTL, &cap[i++]);
- pci_read_config_word(dev, pos + PCI_EXP_SLTCTL, &cap[i++]);
- pci_read_config_word(dev, pos + PCI_EXP_RTCTL, &cap[i++]);
- pci_read_config_word(dev, pos + PCI_EXP_DEVCTL2, &cap[i++]);
- pci_read_config_word(dev, pos + PCI_EXP_LNKCTL2, &cap[i++]);
- pci_read_config_word(dev, pos + PCI_EXP_SLTCTL2, &cap[i++]);
+ pci_read_config_word(dev, pos + PCI_EXP_FLAGS, &flags);
+
+ if (pcie_cap_has_devctl(dev->pcie_type, flags))
+ pci_read_config_word(dev, pos + PCI_EXP_DEVCTL, &cap[i++]);
+ if (pcie_cap_has_lnkctl(dev->pcie_type, flags))
+ pci_read_config_word(dev, pos + PCI_EXP_LNKCTL, &cap[i++]);
+ if (pcie_cap_has_sltctl(dev->pcie_type, flags))
+ pci_read_config_word(dev, pos + PCI_EXP_SLTCTL, &cap[i++]);
+ if (pcie_cap_has_rtctl(dev->pcie_type, flags))
+ pci_read_config_word(dev, pos + PCI_EXP_RTCTL, &cap[i++]);
+ if (pcie_cap_has_devctl2(dev->pcie_type, flags))
+ pci_read_config_word(dev, pos + PCI_EXP_DEVCTL2, &cap[i++]);
+ if (pcie_cap_has_lnkctl2(dev->pcie_type, flags))
+ pci_read_config_word(dev, pos + PCI_EXP_LNKCTL2, &cap[i++]);
+ if (pcie_cap_has_sltctl2(dev->pcie_type, flags))
+ pci_read_config_word(dev, pos + PCI_EXP_SLTCTL2, &cap[i++]);
return 0;
}
@@ -714,6 +746,7 @@ static void pci_restore_pcie_state(struct pci_dev *dev)
int i = 0, pos;
struct pci_cap_saved_state *save_state;
u16 *cap;
+ u16 flags;
save_state = pci_find_saved_cap(dev, PCI_CAP_ID_EXP);
pos = pci_find_capability(dev, PCI_CAP_ID_EXP);
@@ -721,13 +754,22 @@ static void pci_restore_pcie_state(struct pci_dev *dev)
return;
cap = (u16 *)&save_state->data[0];
- pci_write_config_word(dev, pos + PCI_EXP_DEVCTL, cap[i++]);
- pci_write_config_word(dev, pos + PCI_EXP_LNKCTL, cap[i++]);
- pci_write_config_word(dev, pos + PCI_EXP_SLTCTL, cap[i++]);
- pci_write_config_word(dev, pos + PCI_EXP_RTCTL, cap[i++]);
- pci_write_config_word(dev, pos + PCI_EXP_DEVCTL2, cap[i++]);
- pci_write_config_word(dev, pos + PCI_EXP_LNKCTL2, cap[i++]);
- pci_write_config_word(dev, pos + PCI_EXP_SLTCTL2, cap[i++]);
+ pci_read_config_word(dev, pos + PCI_EXP_FLAGS, &flags);
+
+ if (pcie_cap_has_devctl(dev->pcie_type, flags))
+ pci_write_config_word(dev, pos + PCI_EXP_DEVCTL, cap[i++]);
+ if (pcie_cap_has_lnkctl(dev->pcie_type, flags))
+ pci_write_config_word(dev, pos + PCI_EXP_LNKCTL, cap[i++]);
+ if (pcie_cap_has_sltctl(dev->pcie_type, flags))
+ pci_write_config_word(dev, pos + PCI_EXP_SLTCTL, cap[i++]);
+ if (pcie_cap_has_rtctl(dev->pcie_type, flags))
+ pci_write_config_word(dev, pos + PCI_EXP_RTCTL, cap[i++]);
+ if (pcie_cap_has_devctl2(dev->pcie_type, flags))
+ pci_write_config_word(dev, pos + PCI_EXP_DEVCTL2, cap[i++]);
+ if (pcie_cap_has_lnkctl2(dev->pcie_type, flags))
+ pci_write_config_word(dev, pos + PCI_EXP_LNKCTL2, cap[i++]);
+ if (pcie_cap_has_sltctl2(dev->pcie_type, flags))
+ pci_write_config_word(dev, pos + PCI_EXP_SLTCTL2, cap[i++]);
}
diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c
index 8eb50dffb78a..e3c3e081b834 100644
--- a/drivers/pci/probe.c
+++ b/drivers/pci/probe.c
@@ -1118,10 +1118,6 @@ unsigned int __devinit pci_scan_child_bus(struct pci_bus *bus)
return max;
}
-void __attribute__((weak)) set_pci_bus_resources_arch_default(struct pci_bus *b)
-{
-}
-
struct pci_bus * pci_create_bus(struct device *parent,
int bus, struct pci_ops *ops, void *sysdata)
{
@@ -1180,8 +1176,6 @@ struct pci_bus * pci_create_bus(struct device *parent,
b->resource[0] = &ioport_resource;
b->resource[1] = &iomem_resource;
- set_pci_bus_resources_arch_default(b);
-
return b;
dev_create_file_err:
diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c
index 0254741bece0..3067673d54f6 100644
--- a/drivers/pci/quirks.c
+++ b/drivers/pci/quirks.c
@@ -2033,6 +2033,7 @@ DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_RS400_200, quirk_di
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_RS480, quirk_disable_all_msi);
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_VT3336, quirk_disable_all_msi);
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_VT3351, quirk_disable_all_msi);
+DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_VT3364, quirk_disable_all_msi);
/* Disable MSI on chipsets that are known to not support it */
static void __devinit quirk_disable_msi(struct pci_dev *dev)
diff --git a/drivers/pci/setup-bus.c b/drivers/pci/setup-bus.c
index 8d9da9d30a61..a00f85471b6e 100644
--- a/drivers/pci/setup-bus.c
+++ b/drivers/pci/setup-bus.c
@@ -536,11 +536,13 @@ static void pci_bus_dump_res(struct pci_bus *bus)
for (i = 0; i < PCI_BUS_NUM_RESOURCES; i++) {
struct resource *res = bus->resource[i];
- if (!res)
+ if (!res || !res->end)
continue;
dev_printk(KERN_DEBUG, &bus->dev, "resource %d %s %pR\n", i,
- (res->flags & IORESOURCE_IO) ? "io: " : "mem:", res);
+ (res->flags & IORESOURCE_IO) ? "io: " :
+ ((res->flags & IORESOURCE_PREFETCH)? "pref mem":"mem:"),
+ res);
}
}
diff --git a/drivers/pci/slot.c b/drivers/pci/slot.c
index 21189447e545..fe95ce20bcbd 100644
--- a/drivers/pci/slot.c
+++ b/drivers/pci/slot.c
@@ -264,8 +264,8 @@ EXPORT_SYMBOL_GPL(pci_create_slot);
/**
* pci_renumber_slot - update %struct pci_slot -> number
- * @slot - %struct pci_slot to update
- * @slot_nr - new number for slot
+ * @slot: &struct pci_slot to update
+ * @slot_nr: new number for slot
*
* The primary purpose of this interface is to allow callers who earlier
* created a placeholder slot in pci_create_slot() by passing a -1 as
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.