#define PCI_BASE_ADDRESS_IO_MASK (~0x03ULL)
/* bit 1 is reserved if address_space = 1 */
+/* Convert a regsister address (e.g. PCI_BASE_ADDRESS_1) to a bar # (e.g. 1) */
+#define pci_offset_to_barnum(offset) \
+ (((offset) - PCI_BASE_ADDRESS_0) / sizeof(u32))
+
/* Header type 0 (normal devices) */
#define PCI_CARDBUS_CIS 0x28
#define PCI_SUBSYSTEM_VENDOR_ID 0x2c
#define PCI_EA_FIELD_MASK 0xfffffffc /* For Base & Max Offset */
/* PCI Express capabilities */
+#define PCI_EXP_FLAGS 2 /* Capabilities register */
+#define PCI_EXP_FLAGS_TYPE 0x00f0 /* Device/Port type */
+#define PCI_EXP_TYPE_ROOT_PORT 0x4 /* Root Port */
#define PCI_EXP_DEVCAP 4 /* Device capabilities */
-#define PCI_EXP_DEVCAP_FLR 0x10000000 /* Function Level Reset */
+#define PCI_EXP_DEVCAP_FLR 0x10000000 /* Function Level Reset */
#define PCI_EXP_DEVCTL 8 /* Device Control */
-#define PCI_EXP_DEVCTL_BCR_FLR 0x8000 /* Bridge Configuration Retry / FLR */
+#define PCI_EXP_DEVCTL_BCR_FLR 0x8000 /* Bridge Configuration Retry / FLR */
+#define PCI_EXP_LNKCAP 12 /* Link Capabilities */
+#define PCI_EXP_LNKCAP_SLS 0x0000000f /* Supported Link Speeds */
+#define PCI_EXP_LNKCAP_MLW 0x000003f0 /* Maximum Link Width */
+#define PCI_EXP_LNKCAP_DLLLARC 0x00100000 /* Data Link Layer Link Active Reporting Capable */
+#define PCI_EXP_LNKSTA 18 /* Link Status */
+#define PCI_EXP_LNKSTA_CLS 0x000f /* Current Link Speed */
+#define PCI_EXP_LNKSTA_CLS_2_5GB 0x0001 /* Current Link Speed 2.5GT/s */
+#define PCI_EXP_LNKSTA_CLS_5_0GB 0x0002 /* Current Link Speed 5.0GT/s */
+#define PCI_EXP_LNKSTA_CLS_8_0GB 0x0003 /* Current Link Speed 8.0GT/s */
+#define PCI_EXP_LNKSTA_NLW 0x03f0 /* Negotiated Link Width */
+#define PCI_EXP_LNKSTA_NLW_SHIFT 4 /* start of NLW mask in link status */
+#define PCI_EXP_LNKSTA_DLLLA 0x2000 /* Data Link Layer Link Active */
+#define PCI_EXP_SLTCAP 20 /* Slot Capabilities */
+#define PCI_EXP_SLTCAP_PSN 0xfff80000 /* Physical Slot Number */
+#define PCI_EXP_LNKCTL2 48 /* Link Control 2 */
/* Include the ID list */
#ifndef __ASSEMBLY__
+#include <dm/pci.h>
+
#ifdef CONFIG_SYS_PCI_64BIT
typedef u64 pci_addr_t;
typedef u64 pci_size_t;
#else
-typedef u32 pci_addr_t;
-typedef u32 pci_size_t;
+typedef unsigned long pci_addr_t;
+typedef unsigned long pci_size_t;
#endif
struct pci_region {
* This is relevant for the following macros:
* PCI_DEV, PCI_FUNC, PCI_DEVFN
* The U-Boot macro PCI_DEV is equivalent to the Linux PCI_SLOT version with
- * the remark from above (input d in bits 15-8 instead of 7-0.
+ * the remark from above (input is in bits 15-8 instead of 7-0.
*/
#define PCI_DEV(d) (((d) >> 11) & 0x1f)
#define PCI_FUNC(d) (((d) >> 8) & 0x7)
#define PCI_VENDEV(v, d) (((v) << 16) | (d))
#define PCI_ANY_ID (~0)
+/* Convert from Linux format to U-Boot format */
+#define PCI_TO_BDF(val) ((val) << 8)
+
struct pci_device_id {
unsigned int vendor, device; /* Vendor and device ID or PCI_ANY_ID */
unsigned int subvendor, subdevice; /* Subsystem ID's or PCI_ANY_ID */
#define INDIRECT_TYPE_NO_PCIE_LINK 1
-/*
+/**
* Structure of a PCI controller (host bridge)
*
* With driver model this is dev_get_uclass_priv(bus)
+ *
+ * @skip_auto_config_until_reloc: true to avoid auto-config until U-Boot has
+ * relocated. Normally if PCI is used before relocation, this happens
+ * before relocation also. Some platforms set up static configuration in
+ * TPL/SPL to reduce code size and boot time, since these phases only know
+ * about a small subset of PCI devices. This is normally false.
*/
struct pci_controller {
#ifdef CONFIG_DM_PCI
struct udevice *bus;
struct udevice *ctlr;
+ bool skip_auto_config_until_reloc;
#else
struct pci_controller *next;
#endif
* @size: Access size
* @return 0 if OK, -ve on error
*/
- int (*read_config)(struct udevice *bus, pci_dev_t bdf, uint offset,
- ulong *valuep, enum pci_size_t size);
+ int (*read_config)(const struct udevice *bus, pci_dev_t bdf,
+ uint offset, ulong *valuep, enum pci_size_t size);
/**
* write_config() - Write a PCI configuration value
*
* @dev: Device to check
* @return bus/device/function value (see PCI_BDF())
*/
-pci_dev_t dm_pci_get_bdf(struct udevice *dev);
+pci_dev_t dm_pci_get_bdf(const struct udevice *dev);
/**
* pci_bind_bus_devices() - scan a PCI bus and bind devices
* @devp: Returns the device for this address, if found
* @return 0 if OK, -ENODEV if not found
*/
-int pci_bus_find_devfn(struct udevice *bus, pci_dev_t find_devfn,
+int pci_bus_find_devfn(const struct udevice *bus, pci_dev_t find_devfn,
struct udevice **devp);
/**
* @size: Access size
* @return 0 if OK, -ve on error
*/
-int pci_bus_read_config(struct udevice *bus, pci_dev_t bdf, int offset,
+int pci_bus_read_config(const struct udevice *bus, pci_dev_t bdf, int offset,
unsigned long *valuep, enum pci_size_t size);
/**
* Driver model PCI config access functions. Use these in preference to others
* when you have a valid device
*/
-int dm_pci_read_config(struct udevice *dev, int offset, unsigned long *valuep,
- enum pci_size_t size);
+int dm_pci_read_config(const struct udevice *dev, int offset,
+ unsigned long *valuep, enum pci_size_t size);
-int dm_pci_read_config8(struct udevice *dev, int offset, u8 *valuep);
-int dm_pci_read_config16(struct udevice *dev, int offset, u16 *valuep);
-int dm_pci_read_config32(struct udevice *dev, int offset, u32 *valuep);
+int dm_pci_read_config8(const struct udevice *dev, int offset, u8 *valuep);
+int dm_pci_read_config16(const struct udevice *dev, int offset, u16 *valuep);
+int dm_pci_read_config32(const struct udevice *dev, int offset, u32 *valuep);
int dm_pci_write_config(struct udevice *dev, int offset, unsigned long value,
enum pci_size_t size);
* Return: 0 on success, else -EINVAL
*/
int pci_generic_mmap_write_config(
- struct udevice *bus,
- int (*addr_f)(struct udevice *bus, pci_dev_t bdf, uint offset, void **addrp),
+ const struct udevice *bus,
+ int (*addr_f)(const struct udevice *bus, pci_dev_t bdf, uint offset,
+ void **addrp),
pci_dev_t bdf,
uint offset,
ulong value,
* Return: 0 on success, else -EINVAL
*/
int pci_generic_mmap_read_config(
- struct udevice *bus,
- int (*addr_f)(struct udevice *bus, pci_dev_t bdf, uint offset, void **addrp),
+ const struct udevice *bus,
+ int (*addr_f)(const struct udevice *bus, pci_dev_t bdf, uint offset,
+ void **addrp),
pci_dev_t bdf,
uint offset,
ulong *valuep,
* @barnum: Bar number to read (numbered from 0)
* @return: value of BAR
*/
-u32 dm_pci_read_bar32(struct udevice *dev, int barnum);
+u32 dm_pci_read_bar32(const struct udevice *dev, int barnum);
/**
* dm_pci_bus_to_phys() - convert a PCI bus address to a physical address
int dm_pci_find_class(uint find_class, int index, struct udevice **devp);
/**
+ * struct pci_emul_uc_priv - holds info about an emulator device
+ *
+ * There is always at most one emulator per client
+ *
+ * @client: Client device if any, else NULL
+ */
+struct pci_emul_uc_priv {
+ struct udevice *client;
+};
+
+/**
* struct dm_pci_emul_ops - PCI device emulator operations
*/
struct dm_pci_emul_ops {
/**
- * get_devfn(): Check which device and function this emulators
- *
- * @dev: device to check
- * @return the device and function this emulates, or -ve on error
- */
- int (*get_devfn)(struct udevice *dev);
- /**
* read_config() - Read a PCI configuration value
*
* @dev: Emulated device to read from
* @size: Access size
* @return 0 if OK, -ve on error
*/
- int (*read_config)(struct udevice *dev, uint offset, ulong *valuep,
- enum pci_size_t size);
+ int (*read_config)(const struct udevice *dev, uint offset,
+ ulong *valuep, enum pci_size_t size);
/**
* write_config() - Write a PCI configuration value
*
* @emulp: Returns emulated device if found
* @return 0 if found, -ENODEV if not found
*/
-int sandbox_pci_get_emul(struct udevice *bus, pci_dev_t find_devfn,
+int sandbox_pci_get_emul(const struct udevice *bus, pci_dev_t find_devfn,
struct udevice **containerp, struct udevice **emulp);
/**
- * pci_get_devfn() - Extract the devfn from fdt_pci_addr of the device
- *
- * Get devfn from fdt_pci_addr of the specifified device
+ * sandbox_pci_get_client() - Find the client for an emulation device
*
- * @dev: PCI device
- * @return devfn in bits 15...8 if found, -ENODEV if not found
+ * @emul: Emulation device to check
+ * @devp: Returns the client device emulated by this device
+ * @return 0 if OK, -ENOENT if the device has no client yet
*/
-int pci_get_devfn(struct udevice *dev);
+int sandbox_pci_get_client(struct udevice *emul, struct udevice **devp);
#endif /* CONFIG_DM_PCI */
projects / platform / kernel / u-boot.git / blobdiff