aboutsummaryrefslogtreecommitdiffstats
path: root/include/linux/pci.h
diff options
context:
space:
mode:
Diffstat (limited to 'include/linux/pci.h')
-rw-r--r--include/linux/pci.h105
1 files changed, 68 insertions, 37 deletions
diff --git a/include/linux/pci.h b/include/linux/pci.h
index 27df4a6585da..004b8133417d 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -70,12 +70,6 @@ enum pci_mmap_state {
pci_mmap_mem
};
-/* This defines the direction arg to the DMA mapping routines. */
-#define PCI_DMA_BIDIRECTIONAL 0
-#define PCI_DMA_TODEVICE 1
-#define PCI_DMA_FROMDEVICE 2
-#define PCI_DMA_NONE 3
-
/*
* For PCI devices, the region numbers are assigned this way:
*/
@@ -359,6 +353,7 @@ struct pci_dev {
unsigned int io_window_1k:1; /* Intel P2P bridge 1K I/O windows */
unsigned int irq_managed:1;
unsigned int has_secondary_link:1;
+ unsigned int non_compliant_bars:1; /* broken BARs; ignore them */
pci_dev_flags_t dev_flags;
atomic_t enable_cnt; /* pci_enable_device has been called */
@@ -578,6 +573,8 @@ static inline int pcibios_err_to_errno(int err)
/* Low-level architecture-dependent routines */
struct pci_ops {
+ int (*add_bus)(struct pci_bus *bus);
+ void (*remove_bus)(struct pci_bus *bus);
void __iomem *(*map_bus)(struct pci_bus *bus, unsigned int devfn, int where);
int (*read)(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 *val);
int (*write)(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 val);
@@ -746,9 +743,26 @@ struct pci_driver {
.vendor = PCI_VENDOR_ID_##vend, .device = (dev), \
.subvendor = PCI_ANY_ID, .subdevice = PCI_ANY_ID, 0, 0
+enum {
+ PCI_REASSIGN_ALL_RSRC = 0x00000001, /* ignore firmware setup */
+ PCI_REASSIGN_ALL_BUS = 0x00000002, /* reassign all bus numbers */
+ PCI_PROBE_ONLY = 0x00000004, /* use existing setup */
+ PCI_CAN_SKIP_ISA_ALIGN = 0x00000008, /* don't do ISA alignment */
+ PCI_ENABLE_PROC_DOMAINS = 0x00000010, /* enable domains in /proc */
+ PCI_COMPAT_DOMAIN_0 = 0x00000020, /* ... except domain 0 */
+ PCI_SCAN_ALL_PCIE_DEVS = 0x00000040, /* scan all, not just dev 0 */
+};
+
/* these external functions are only available when PCI support is enabled */
#ifdef CONFIG_PCI
+extern unsigned int pci_flags;
+
+static inline void pci_set_flags(int flags) { pci_flags = flags; }
+static inline void pci_add_flags(int flags) { pci_flags |= flags; }
+static inline void pci_clear_flags(int flags) { pci_flags &= ~flags; }
+static inline int pci_has_flag(int flag) { return pci_flags & flag; }
+
void pcie_bus_configure_settings(struct pci_bus *bus);
enum pcie_bus_config_types {
@@ -770,6 +784,7 @@ extern struct list_head pci_root_buses; /* list of all known PCI buses */
int no_pci_devices(void);
void pcibios_resource_survey_bus(struct pci_bus *bus);
+void pcibios_bus_add_device(struct pci_dev *pdev);
void pcibios_add_bus(struct pci_bus *bus);
void pcibios_remove_bus(struct pci_bus *bus);
void pcibios_fixup_bus(struct pci_bus *);
@@ -988,23 +1003,6 @@ static inline int pci_is_managed(struct pci_dev *pdev)
return pdev->is_managed;
}
-static inline void pci_set_managed_irq(struct pci_dev *pdev, unsigned int irq)
-{
- pdev->irq = irq;
- pdev->irq_managed = 1;
-}
-
-static inline void pci_reset_managed_irq(struct pci_dev *pdev)
-{
- pdev->irq = 0;
- pdev->irq_managed = 0;
-}
-
-static inline bool pci_has_managed_irq(struct pci_dev *pdev)
-{
- return pdev->irq_managed && pdev->irq > 0;
-}
-
void pci_disable_device(struct pci_dev *dev);
extern unsigned int pcibios_max_latency;
@@ -1021,8 +1019,6 @@ void pci_intx(struct pci_dev *dev, int enable);
bool pci_intx_mask_supported(struct pci_dev *dev);
bool pci_check_and_mask_intx(struct pci_dev *dev);
bool pci_check_and_unmask_intx(struct pci_dev *dev);
-int pci_set_dma_max_seg_size(struct pci_dev *dev, unsigned int size);
-int pci_set_dma_seg_boundary(struct pci_dev *dev, unsigned long mask);
int pci_wait_for_pending(struct pci_dev *dev, int pos, u16 mask);
int pci_wait_for_pending_transaction(struct pci_dev *dev);
int pcix_get_max_mmrbc(struct pci_dev *dev);
@@ -1238,6 +1234,7 @@ resource_size_t pcibios_iov_resource_alignment(struct pci_dev *dev, int resno);
int pci_set_vga_state(struct pci_dev *pdev, bool decode,
unsigned int command_bits, u32 flags);
+
/* kmem_cache style wrapper around pci_alloc_consistent() */
#include <linux/pci-dma.h>
@@ -1405,6 +1402,11 @@ void pci_register_set_vga_state(arch_set_vga_state_t func);
#else /* CONFIG_PCI is not enabled */
+static inline void pci_set_flags(int flags) { }
+static inline void pci_add_flags(int flags) { }
+static inline void pci_clear_flags(int flags) { }
+static inline int pci_has_flag(int flag) { return 0; }
+
/*
* If the system does not have PCI, clearly these return errors. Define
* these as simple inline functions to avoid hair in drivers.
@@ -1444,16 +1446,6 @@ static inline struct pci_dev *pci_get_class(unsigned int class,
static inline void pci_set_master(struct pci_dev *dev) { }
static inline int pci_enable_device(struct pci_dev *dev) { return -EIO; }
static inline void pci_disable_device(struct pci_dev *dev) { }
-static inline int pci_set_dma_mask(struct pci_dev *dev, u64 mask)
-{ return -EIO; }
-static inline int pci_set_consistent_dma_mask(struct pci_dev *dev, u64 mask)
-{ return -EIO; }
-static inline int pci_set_dma_max_seg_size(struct pci_dev *dev,
- unsigned int size)
-{ return -EIO; }
-static inline int pci_set_dma_seg_boundary(struct pci_dev *dev,
- unsigned long mask)
-{ return -EIO; }
static inline int pci_assign_resource(struct pci_dev *dev, int i)
{ return -EBUSY; }
static inline int __pci_register_driver(struct pci_driver *drv,
@@ -1515,6 +1507,10 @@ static inline int pci_get_new_domain_nr(void) { return -ENOSYS; }
#include <asm/pci.h>
+#ifndef pci_root_bus_fwnode
+#define pci_root_bus_fwnode(bus) NULL
+#endif
+
/* these helpers provide future and backwards compatibility
* for accessing popular PCI BAR info */
#define pci_resource_start(dev, bar) ((dev)->resource[(bar)].start)
@@ -1738,6 +1734,8 @@ int pci_iov_virtfn_devfn(struct pci_dev *dev, int id);
int pci_enable_sriov(struct pci_dev *dev, int nr_virtfn);
void pci_disable_sriov(struct pci_dev *dev);
+int pci_iov_add_virtfn(struct pci_dev *dev, int id, int reset);
+void pci_iov_remove_virtfn(struct pci_dev *dev, int id, int reset);
int pci_num_vf(struct pci_dev *dev);
int pci_vfs_assigned(struct pci_dev *dev);
int pci_sriov_set_totalvfs(struct pci_dev *dev, u16 numvfs);
@@ -1754,6 +1752,12 @@ static inline int pci_iov_virtfn_devfn(struct pci_dev *dev, int id)
}
static inline int pci_enable_sriov(struct pci_dev *dev, int nr_virtfn)
{ return -ENODEV; }
+static inline int pci_iov_add_virtfn(struct pci_dev *dev, int id, int reset)
+{
+ return -ENOSYS;
+}
+static inline void pci_iov_remove_virtfn(struct pci_dev *dev,
+ int id, int reset) { }
static inline void pci_disable_sriov(struct pci_dev *dev) { }
static inline int pci_num_vf(struct pci_dev *dev) { return 0; }
static inline int pci_vfs_assigned(struct pci_dev *dev)
@@ -1834,12 +1838,13 @@ bool pci_acs_path_enabled(struct pci_dev *start,
#define PCI_VPD_LRDT_RW_DATA PCI_VPD_LRDT_ID(PCI_VPD_LTIN_RW_DATA)
/* Small Resource Data Type Tag Item Names */
-#define PCI_VPD_STIN_END 0x78 /* End */
+#define PCI_VPD_STIN_END 0x0f /* End */
-#define PCI_VPD_SRDT_END PCI_VPD_STIN_END
+#define PCI_VPD_SRDT_END (PCI_VPD_STIN_END << 3)
#define PCI_VPD_SRDT_TIN_MASK 0x78
#define PCI_VPD_SRDT_LEN_MASK 0x07
+#define PCI_VPD_LRDT_TIN_MASK 0x7f
#define PCI_VPD_LRDT_TAG_SIZE 3
#define PCI_VPD_SRDT_TAG_SIZE 1
@@ -1863,6 +1868,17 @@ static inline u16 pci_vpd_lrdt_size(const u8 *lrdt)
}
/**
+ * pci_vpd_lrdt_tag - Extracts the Large Resource Data Type Tag Item
+ * @lrdt: Pointer to the beginning of the Large Resource Data Type tag
+ *
+ * Returns the extracted Large Resource Data Type Tag item.
+ */
+static inline u16 pci_vpd_lrdt_tag(const u8 *lrdt)
+{
+ return (u16)(lrdt[0] & PCI_VPD_LRDT_TIN_MASK);
+}
+
+/**
* pci_vpd_srdt_size - Extracts the Small Resource Data Type length
* @lrdt: Pointer to the beginning of the Small Resource Data Type tag
*
@@ -1874,6 +1890,17 @@ static inline u8 pci_vpd_srdt_size(const u8 *srdt)
}
/**
+ * pci_vpd_srdt_tag - Extracts the Small Resource Data Type Tag Item
+ * @lrdt: Pointer to the beginning of the Small Resource Data Type tag
+ *
+ * Returns the extracted Small Resource Data Type Tag Item.
+ */
+static inline u8 pci_vpd_srdt_tag(const u8 *srdt)
+{
+ return ((*srdt) & PCI_VPD_SRDT_TIN_MASK) >> 3;
+}
+
+/**
* pci_vpd_info_field_size - Extracts the information field length
* @lrdt: Pointer to the beginning of an information field header
*
@@ -1989,4 +2016,8 @@ static inline bool pci_ari_enabled(struct pci_bus *bus)
{
return bus->self && bus->self->ari_enabled;
}
+
+/* provide the legacy pci_dma_* API */
+#include <linux/pci-dma-compat.h>
+
#endif /* LINUX_PCI_H */
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.