X-Git-Url: https://git.kernelconcepts.de/?a=blobdiff_plain;f=include%2Fpci.h;h=e24c9701301bfe2138d457b024d3040e1a03485c;hb=refs%2Fheads%2Ftx6qp-devel;hp=15f583f069d4ca1c45f09893542af487cb37f998;hpb=1e362dc3e799fd86722a60f5639e52a67dfc0658;p=karo-tx-uboot.git diff --git a/include/pci.h b/include/pci.h index 15f583f069..e24c970130 100644 --- a/include/pci.h +++ b/include/pci.h @@ -5,28 +5,15 @@ * (C) Copyright 2002 * Wolfgang Denk, DENX Software Engineering, wd@denx.de. * - * See file CREDITS for list of people who contributed to this - * project. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation; either version 2 of - * the License, or (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * aloong with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, - * MA 02111-1307 USA + * SPDX-License-Identifier: GPL-2.0+ */ #ifndef _PCI_H #define _PCI_H +#define PCI_CFG_SPACE_SIZE 256 +#define PCI_CFG_SPACE_EXP_SIZE 4096 + /* * Under PCI, each device has 256 bytes of configuration address space, * of which the first 64 bytes are standardized as follows: @@ -244,6 +231,8 @@ #define PCI_MIN_GNT 0x3e /* 8 bits */ #define PCI_MAX_LAT 0x3f /* 8 bits */ +#define PCI_INTERRUPT_LINE_DISABLE 0xff + /* Header type 1 (PCI-to-PCI bridges) */ #define PCI_PRIMARY_BUS 0x18 /* Primary bus number */ #define PCI_SECONDARY_BUS 0x19 /* Secondary bus number */ @@ -426,17 +415,48 @@ #define PCI_MAX_PCI_DEVICES 32 #define PCI_MAX_PCI_FUNCTIONS 8 -#define PCI_DCR 0x54 /* PCIe Device Control Register */ -#define PCI_DSR 0x56 /* PCIe Device Status Register */ -#define PCI_LSR 0x5e /* PCIe Link Status Register */ -#define PCI_LCR 0x5c /* PCIe Link Control Register */ -#define PCI_LTSSM 0x404 /* PCIe Link Training, Status State Machine */ -#define PCI_LTSSM_L0 0x16 /* L0 state */ +#define PCI_FIND_CAP_TTL 0x48 +#define CAP_START_POS 0x40 + +/* Extended Capabilities (PCI-X 2.0 and Express) */ +#define PCI_EXT_CAP_ID(header) (header & 0x0000ffff) +#define PCI_EXT_CAP_VER(header) ((header >> 16) & 0xf) +#define PCI_EXT_CAP_NEXT(header) ((header >> 20) & 0xffc) + +#define PCI_EXT_CAP_ID_ERR 0x01 /* Advanced Error Reporting */ +#define PCI_EXT_CAP_ID_VC 0x02 /* Virtual Channel Capability */ +#define PCI_EXT_CAP_ID_DSN 0x03 /* Device Serial Number */ +#define PCI_EXT_CAP_ID_PWR 0x04 /* Power Budgeting */ +#define PCI_EXT_CAP_ID_RCLD 0x05 /* Root Complex Link Declaration */ +#define PCI_EXT_CAP_ID_RCILC 0x06 /* Root Complex Internal Link Control */ +#define PCI_EXT_CAP_ID_RCEC 0x07 /* Root Complex Event Collector */ +#define PCI_EXT_CAP_ID_MFVC 0x08 /* Multi-Function VC Capability */ +#define PCI_EXT_CAP_ID_VC9 0x09 /* same as _VC */ +#define PCI_EXT_CAP_ID_RCRB 0x0A /* Root Complex RB? */ +#define PCI_EXT_CAP_ID_VNDR 0x0B /* Vendor-Specific */ +#define PCI_EXT_CAP_ID_CAC 0x0C /* Config Access - obsolete */ +#define PCI_EXT_CAP_ID_ACS 0x0D /* Access Control Services */ +#define PCI_EXT_CAP_ID_ARI 0x0E /* Alternate Routing ID */ +#define PCI_EXT_CAP_ID_ATS 0x0F /* Address Translation Services */ +#define PCI_EXT_CAP_ID_SRIOV 0x10 /* Single Root I/O Virtualization */ +#define PCI_EXT_CAP_ID_MRIOV 0x11 /* Multi Root I/O Virtualization */ +#define PCI_EXT_CAP_ID_MCAST 0x12 /* Multicast */ +#define PCI_EXT_CAP_ID_PRI 0x13 /* Page Request Interface */ +#define PCI_EXT_CAP_ID_AMD_XXX 0x14 /* Reserved for AMD */ +#define PCI_EXT_CAP_ID_REBAR 0x15 /* Resizable BAR */ +#define PCI_EXT_CAP_ID_DPA 0x16 /* Dynamic Power Allocation */ +#define PCI_EXT_CAP_ID_TPH 0x17 /* TPH Requester */ +#define PCI_EXT_CAP_ID_LTR 0x18 /* Latency Tolerance Reporting */ +#define PCI_EXT_CAP_ID_SECPCI 0x19 /* Secondary PCIe Capability */ +#define PCI_EXT_CAP_ID_PMUX 0x1A /* Protocol Multiplexing */ +#define PCI_EXT_CAP_ID_PASID 0x1B /* Process Address Space ID */ /* Include the ID list */ #include +#ifndef __ASSEMBLY__ + #ifdef CONFIG_SYS_PCI_64BIT typedef u64 pci_addr_t; typedef u64 pci_size_t; @@ -462,7 +482,7 @@ struct pci_region { #define PCI_REGION_SYS_MEMORY 0x00000100 /* System memory */ #define PCI_REGION_RO 0x00000200 /* Read-only memory */ -extern __inline__ void pci_set_region(struct pci_region *reg, +static inline void pci_set_region(struct pci_region *reg, pci_addr_t bus_start, phys_addr_t phys_start, pci_size_t size, @@ -475,15 +495,21 @@ extern __inline__ void pci_set_region(struct pci_region *reg, typedef int pci_dev_t; -#define PCI_BUS(d) (((d) >> 16) & 0xff) -#define PCI_DEV(d) (((d) >> 11) & 0x1f) -#define PCI_FUNC(d) (((d) >> 8) & 0x7) -#define PCI_BDF(b,d,f) ((b) << 16 | (d) << 11 | (f) << 8) - -#define PCI_ANY_ID (~0) +#define PCI_BUS(d) (((d) >> 16) & 0xff) +#define PCI_DEV(d) (((d) >> 11) & 0x1f) +#define PCI_FUNC(d) (((d) >> 8) & 0x7) +#define PCI_DEVFN(d, f) ((d) << 11 | (f) << 8) +#define PCI_MASK_BUS(bdf) ((bdf) & 0xffff) +#define PCI_ADD_BUS(bus, devfn) (((bus) << 16) | (devfn)) +#define PCI_BDF(b, d, f) ((b) << 16 | PCI_DEVFN(d, f)) +#define PCI_VENDEV(v, d) (((v) << 16) | (d)) +#define PCI_ANY_ID (~0) struct pci_device_id { - unsigned int vendor, device; /* Vendor and device ID or PCI_ANY_ID */ + unsigned int vendor, device; /* Vendor and device ID or PCI_ANY_ID */ + unsigned int subvendor, subdevice; /* Subsystem ID's or PCI_ANY_ID */ + unsigned int class, class_mask; /* (class,subclass,prog-if) triplet */ + unsigned long driver_data; /* Data private to the driver */ }; struct pci_controller; @@ -513,7 +539,12 @@ extern void pci_cfgfunc_config_device(struct pci_controller* hose, pci_dev_t dev * Structure of a PCI controller (host bridge) */ struct pci_controller { +#ifdef CONFIG_DM_PCI + struct udevice *bus; + struct udevice *ctlr; +#else struct pci_controller *next; +#endif int first_busno; int last_busno; @@ -523,13 +554,23 @@ struct pci_controller { int indirect_type; + /* + * TODO(sjg@chromium.org): With driver model we use struct + * pci_controller for both the controller and any bridge devices + * attached to it. But there is only one region list and it is in the + * top-level controller. + * + * This could be changed so that struct pci_controller is only used + * for PCI controllers and a separate UCLASS (or perhaps + * UCLASS_PCI_GENERIC) is used for bridges. + */ struct pci_region regions[MAX_PCI_REGIONS]; int region_count; struct pci_config_table *config_table; void (*fixup_irq)(struct pci_controller *, pci_dev_t); - +#ifndef CONFIG_DM_PCI /* Low-level architecture-dependent routines */ int (*read_byte)(struct pci_controller*, pci_dev_t, int where, u8 *); int (*read_word)(struct pci_controller*, pci_dev_t, int where, u16 *); @@ -537,18 +578,22 @@ struct pci_controller { int (*write_byte)(struct pci_controller*, pci_dev_t, int where, u8); int (*write_word)(struct pci_controller*, pci_dev_t, int where, u16); int (*write_dword)(struct pci_controller*, pci_dev_t, int where, u32); +#endif /* Used by auto config */ struct pci_region *pci_mem, *pci_io, *pci_prefetch; /* Used by ppc405 autoconfig*/ struct pci_region *pci_fb; +#ifndef CONFIG_DM_PCI int current_busno; void *priv_data; +#endif }; -extern __inline__ void pci_set_ops(struct pci_controller *hose, +#ifndef CONFIG_DM_PCI +static inline void pci_set_ops(struct pci_controller *hose, int (*read_byte)(struct pci_controller*, pci_dev_t, int where, u8 *), int (*read_word)(struct pci_controller*, @@ -568,8 +613,11 @@ extern __inline__ void pci_set_ops(struct pci_controller *hose, hose->write_word = write_word; hose->write_dword = write_dword; } +#endif +#ifdef CONFIG_PCI_INDIRECT_BRIDGE extern void pci_setup_indirect(struct pci_controller* hose, u32 cfg_addr, u32 cfg_data); +#endif extern phys_addr_t pci_hose_bus_to_phys(struct pci_controller* hose, pci_addr_t addr, unsigned long flags); @@ -605,6 +653,7 @@ extern pci_addr_t pci_hose_phys_to_bus(struct pci_controller* hose, #define pci_io_to_virt(dev, addr, len, map_flags) \ pci_bus_to_virt((dev), (addr), PCI_REGION_IO, (len), (map_flags)) +/* For driver model these are defined in macros in pci_compat.c */ extern int pci_hose_read_config_byte(struct pci_controller *hose, pci_dev_t dev, int where, u8 *val); extern int pci_hose_read_config_word(struct pci_controller *hose, @@ -618,12 +667,14 @@ extern int pci_hose_write_config_word(struct pci_controller *hose, extern int pci_hose_write_config_dword(struct pci_controller *hose, pci_dev_t dev, int where, u32 val); +#ifndef CONFIG_DM_PCI extern int pci_read_config_byte(pci_dev_t dev, int where, u8 *val); extern int pci_read_config_word(pci_dev_t dev, int where, u16 *val); extern int pci_read_config_dword(pci_dev_t dev, int where, u32 *val); extern int pci_write_config_byte(pci_dev_t dev, int where, u8 val); extern int pci_write_config_word(pci_dev_t dev, int where, u16 val); extern int pci_write_config_dword(pci_dev_t dev, int where, u32 val); +#endif extern int pci_hose_read_config_byte_via_dword(struct pci_controller *hose, pci_dev_t dev, int where, u8 *val); @@ -639,6 +690,7 @@ extern void pci_register_hose(struct pci_controller* hose); extern struct pci_controller* pci_bus_to_hose(int bus); extern struct pci_controller *find_hose_by_cfg_addr(void *cfg_addr); +extern int pci_skip_dev(struct pci_controller *hose, pci_dev_t dev); extern int pci_hose_scan(struct pci_controller *hose); extern int pci_hose_scan_bus(struct pci_controller *hose, int bus); @@ -659,8 +711,7 @@ extern int pciauto_config_device(struct pci_controller *hose, pci_dev_t dev); extern pci_dev_t pci_find_device (unsigned int vendor, unsigned int device, int index); extern pci_dev_t pci_find_devices (struct pci_device_id *ids, int index); -extern pci_dev_t pci_find_class(int wanted_class, int wanted_sub_code, - int wanted_prog_if, int index); +pci_dev_t pci_find_class(unsigned int find_class, int index); extern int pci_hose_config_device(struct pci_controller *hose, pci_dev_t dev, @@ -668,14 +719,559 @@ extern int pci_hose_config_device(struct pci_controller *hose, pci_addr_t mem, unsigned long command); +extern int pci_hose_find_capability(struct pci_controller *hose, pci_dev_t dev, + int cap); +extern int pci_hose_find_cap_start(struct pci_controller *hose, pci_dev_t dev, + u8 hdr_type); +extern int pci_find_cap(struct pci_controller *hose, pci_dev_t dev, int pos, + int cap); + +int pci_find_next_ext_capability(struct pci_controller *hose, + pci_dev_t dev, int start, int cap); +int pci_hose_find_ext_capability(struct pci_controller *hose, + pci_dev_t dev, int cap); + +#ifdef CONFIG_PCI_FIXUP_DEV +extern void board_pci_fixup_dev(struct pci_controller *hose, pci_dev_t dev, + unsigned short vendor, + unsigned short device, + unsigned short class); +#endif + const char * pci_class_str(u8 class); int pci_last_busno(void); -#ifdef CONFIG_MPC824X -extern void pci_mpc824x_init (struct pci_controller *hose); -#endif - #ifdef CONFIG_MPC85xx extern void pci_mpc85xx_init (struct pci_controller *hose); #endif -#endif /* _PCI_H */ + +/** + * pci_write_bar32() - Write the address of a BAR including control bits + * + * This writes a raw address (with control bits) to a bar + * + * @hose: PCI hose to use + * @dev: PCI device to update + * @barnum: BAR number (0-5) + * @addr: BAR address with control bits + */ +void pci_write_bar32(struct pci_controller *hose, pci_dev_t dev, int barnum, + u32 addr_and_ctrl); + +/** + * pci_read_bar32() - read the address of a bar + * + * @hose: PCI hose to use + * @dev: PCI device to inspect + * @barnum: BAR number (0-5) + * @return address of the bar, masking out any control bits + * */ +u32 pci_read_bar32(struct pci_controller *hose, pci_dev_t dev, int barnum); + +/** + * pci_hose_find_devices() - Find devices by vendor/device ID + * + * @hose: PCI hose to search + * @busnum: Bus number to search + * @ids: PCI vendor/device IDs to look for, terminated by 0, 0 record + * @indexp: Pointer to device index to find. To find the first matching + * device, pass 0; to find the second, pass 1, etc. This + * parameter is decremented for each non-matching device so + * can be called repeatedly. + */ +pci_dev_t pci_hose_find_devices(struct pci_controller *hose, int busnum, + struct pci_device_id *ids, int *indexp); + +/* Access sizes for PCI reads and writes */ +enum pci_size_t { + PCI_SIZE_8, + PCI_SIZE_16, + PCI_SIZE_32, +}; + +struct udevice; + +#ifdef CONFIG_DM_PCI +/** + * struct pci_child_platdata - information stored about each PCI device + * + * Every device on a PCI bus has this per-child data. + * + * It can be accessed using dev_get_parentdata(dev) if dev->parent is a + * PCI bus (i.e. UCLASS_PCI) + * + * @devfn: Encoded device and function index - see PCI_DEVFN() + * @vendor: PCI vendor ID (see pci_ids.h) + * @device: PCI device ID (see pci_ids.h) + * @class: PCI class, 3 bytes: (base, sub, prog-if) + */ +struct pci_child_platdata { + int devfn; + unsigned short vendor; + unsigned short device; + unsigned int class; +}; + +/* PCI bus operations */ +struct dm_pci_ops { + /** + * read_config() - Read a PCI configuration value + * + * PCI buses must support reading and writing configuration values + * so that the bus can be scanned and its devices configured. + * + * Normally PCI_BUS(@bdf) is the same as @bus->seq, but not always. + * If bridges exist it is possible to use the top-level bus to + * access a sub-bus. In that case @bus will be the top-level bus + * and PCI_BUS(bdf) will be a different (higher) value + * + * @bus: Bus to read from + * @bdf: Bus, device and function to read + * @offset: Byte offset within the device's configuration space + * @valuep: Place to put the returned value + * @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); + /** + * write_config() - Write a PCI configuration value + * + * @bus: Bus to write to + * @bdf: Bus, device and function to write + * @offset: Byte offset within the device's configuration space + * @value: Value to write + * @size: Access size + * @return 0 if OK, -ve on error + */ + int (*write_config)(struct udevice *bus, pci_dev_t bdf, uint offset, + ulong value, enum pci_size_t size); +}; + +/* Get access to a PCI bus' operations */ +#define pci_get_ops(dev) ((struct dm_pci_ops *)(dev)->driver->ops) + +/** + * pci_get_bdf() - Get the BDF value for a device + * + * @dev: Device to check + * @return bus/device/function value (see PCI_BDF()) + */ +pci_dev_t pci_get_bdf(struct udevice *dev); + +/** + * pci_bind_bus_devices() - scan a PCI bus and bind devices + * + * Scan a PCI bus looking for devices. Bind each one that is found. If + * devices are already bound that match the scanned devices, just update the + * child data so that the device can be used correctly (this happens when + * the device tree describes devices we expect to see on the bus). + * + * Devices that are bound in this way will use a generic PCI driver which + * does nothing. The device can still be accessed but will not provide any + * driver interface. + * + * @bus: Bus containing devices to bind + * @return 0 if OK, -ve on error + */ +int pci_bind_bus_devices(struct udevice *bus); + +/** + * pci_auto_config_devices() - configure bus devices ready for use + * + * This works through all devices on a bus by scanning the driver model + * data structures (normally these have been set up by pci_bind_bus_devices() + * earlier). + * + * Space is allocated for each PCI base address register (BAR) so that the + * devices are mapped into memory and I/O space ready for use. + * + * @bus: Bus containing devices to bind + * @return 0 if OK, -ve on error + */ +int pci_auto_config_devices(struct udevice *bus); + +/** + * pci_bus_find_bdf() - Find a device given its PCI bus address + * + * @bdf: PCI device address: bus, device and function -see PCI_BDF() + * @devp: Returns the device for this address, if found + * @return 0 if OK, -ENODEV if not found + */ +int pci_bus_find_bdf(pci_dev_t bdf, struct udevice **devp); + +/** + * pci_bus_find_devfn() - Find a device on a bus + * + * @find_devfn: PCI device address (device and function only) + * @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, + struct udevice **devp); + +/** + * pci_find_first_device() - return the first available PCI device + * + * This function and pci_find_first_device() allow iteration through all + * available PCI devices on all buses. Assuming there are any, this will + * return the first one. + * + * @devp: Set to the first available device, or NULL if no more are left + * or we got an error + * @return 0 if all is OK, -ve on error (e.g. a bus/bridge failed to probe) + */ +int pci_find_first_device(struct udevice **devp); + +/** + * pci_find_next_device() - return the next available PCI device + * + * Finds the next available PCI device after the one supplied, or sets @devp + * to NULL if there are no more. + * + * @devp: On entry, the last device returned. Set to the next available + * device, or NULL if no more are left or we got an error + * @return 0 if all is OK, -ve on error (e.g. a bus/bridge failed to probe) + */ +int pci_find_next_device(struct udevice **devp); + +/** + * pci_get_ff() - Returns a mask for the given access size + * + * @size: Access size + * @return 0xff for PCI_SIZE_8, 0xffff for PCI_SIZE_16, 0xffffffff for + * PCI_SIZE_32 + */ +int pci_get_ff(enum pci_size_t size); + +/** + * pci_bus_find_devices () - Find devices on a bus + * + * @bus: Bus to search + * @ids: PCI vendor/device IDs to look for, terminated by 0, 0 record + * @indexp: Pointer to device index to find. To find the first matching + * device, pass 0; to find the second, pass 1, etc. This + * parameter is decremented for each non-matching device so + * can be called repeatedly. + * @devp: Returns matching device if found + * @return 0 if found, -ENODEV if not + */ +int pci_bus_find_devices(struct udevice *bus, struct pci_device_id *ids, + int *indexp, struct udevice **devp); + +/** + * pci_find_device_id() - Find a device on any bus + * + * @ids: PCI vendor/device IDs to look for, terminated by 0, 0 record + * @index: Index number of device to find, 0 for the first match, 1 for + * the second, etc. + * @devp: Returns matching device if found + * @return 0 if found, -ENODEV if not + */ +int pci_find_device_id(struct pci_device_id *ids, int index, + struct udevice **devp); + +/** + * dm_pci_hose_probe_bus() - probe a subordinate bus, scanning it for devices + * + * This probes the given bus which causes it to be scanned for devices. The + * devices will be bound but not probed. + * + * @hose specifies the PCI hose that will be used for the scan. This is + * always a top-level bus with uclass UCLASS_PCI. The bus to scan is + * in @bdf, and is a subordinate bus reachable from @hose. + * + * @hose: PCI hose to scan + * @bdf: PCI bus address to scan (PCI_BUS(bdf) is the bus number) + * @return 0 if OK, -ve on error + */ +int dm_pci_hose_probe_bus(struct pci_controller *hose, pci_dev_t bdf); + +/** + * pci_bus_read_config() - Read a configuration value from a device + * + * TODO(sjg@chromium.org): We should be able to pass just a device and have + * it do the right thing. It would be good to have that function also. + * + * @bus: Bus to read from + * @bdf: PCI device address: bus, device and function -see PCI_BDF() + * @valuep: Place to put the returned value + * @size: Access size + * @return 0 if OK, -ve on error + */ +int pci_bus_read_config(struct udevice *bus, pci_dev_t bdf, int offset, + unsigned long *valuep, enum pci_size_t size); + +/** + * pci_bus_write_config() - Write a configuration value to a device + * + * @bus: Bus to write from + * @bdf: PCI device address: bus, device and function -see PCI_BDF() + * @value: Value to write + * @size: Access size + * @return 0 if OK, -ve on error + */ +int pci_bus_write_config(struct udevice *bus, pci_dev_t bdf, int offset, + unsigned long value, 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_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_write_config(struct udevice *dev, int offset, unsigned long value, + enum pci_size_t size); + +int dm_pci_write_config8(struct udevice *dev, int offset, u8 value); +int dm_pci_write_config16(struct udevice *dev, int offset, u16 value); +int dm_pci_write_config32(struct udevice *dev, int offset, u32 value); + +/* + * The following functions provide access to the above without needing the + * size parameter. We are trying to encourage the use of the 8/16/32-style + * functions, rather than byte/word/dword. But both are supported. + */ +int pci_write_config32(pci_dev_t pcidev, int offset, u32 value); + +/* Compatibility with old naming */ +static inline int pci_write_config_dword(pci_dev_t pcidev, int offset, + u32 value) +{ + return pci_write_config32(pcidev, offset, value); +} + +int pci_write_config16(pci_dev_t pcidev, int offset, u16 value); + +/* Compatibility with old naming */ +static inline int pci_write_config_word(pci_dev_t pcidev, int offset, + u16 value) +{ + return pci_write_config16(pcidev, offset, value); +} + +int pci_write_config8(pci_dev_t pcidev, int offset, u8 value); + +/* Compatibility with old naming */ +static inline int pci_write_config_byte(pci_dev_t pcidev, int offset, + u8 value) +{ + return pci_write_config8(pcidev, offset, value); +} + +int pci_read_config32(pci_dev_t pcidev, int offset, u32 *valuep); + +/* Compatibility with old naming */ +static inline int pci_read_config_dword(pci_dev_t pcidev, int offset, + u32 *valuep) +{ + return pci_read_config32(pcidev, offset, valuep); +} + +int pci_read_config16(pci_dev_t pcidev, int offset, u16 *valuep); + +/* Compatibility with old naming */ +static inline int pci_read_config_word(pci_dev_t pcidev, int offset, + u16 *valuep) +{ + return pci_read_config16(pcidev, offset, valuep); +} + +int pci_read_config8(pci_dev_t pcidev, int offset, u8 *valuep); + +/* Compatibility with old naming */ +static inline int pci_read_config_byte(pci_dev_t pcidev, int offset, + u8 *valuep) +{ + return pci_read_config8(pcidev, offset, valuep); +} + +/** + * 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 + * @offset: Byte offset within the device's configuration space + * @valuep: Place to put the returned value + * @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); + /** + * write_config() - Write a PCI configuration value + * + * @dev: Emulated device to write to + * @offset: Byte offset within the device's configuration space + * @value: Value to write + * @size: Access size + * @return 0 if OK, -ve on error + */ + int (*write_config)(struct udevice *dev, uint offset, ulong value, + enum pci_size_t size); + /** + * read_io() - Read a PCI I/O value + * + * @dev: Emulated device to read from + * @addr: I/O address to read + * @valuep: Place to put the returned value + * @size: Access size + * @return 0 if OK, -ENOENT if @addr is not mapped by this device, + * other -ve value on error + */ + int (*read_io)(struct udevice *dev, unsigned int addr, ulong *valuep, + enum pci_size_t size); + /** + * write_io() - Write a PCI I/O value + * + * @dev: Emulated device to write from + * @addr: I/O address to write + * @value: Value to write + * @size: Access size + * @return 0 if OK, -ENOENT if @addr is not mapped by this device, + * other -ve value on error + */ + int (*write_io)(struct udevice *dev, unsigned int addr, + ulong value, enum pci_size_t size); + /** + * map_physmem() - Map a device into sandbox memory + * + * @dev: Emulated device to map + * @addr: Memory address, normally corresponding to a PCI BAR. + * The device should have been configured to have a BAR + * at this address. + * @lenp: On entry, the size of the area to map, On exit it is + * updated to the size actually mapped, which may be less + * if the device has less space + * @ptrp: Returns a pointer to the mapped address. The device's + * space can be accessed as @lenp bytes starting here + * @return 0 if OK, -ENOENT if @addr is not mapped by this device, + * other -ve value on error + */ + int (*map_physmem)(struct udevice *dev, phys_addr_t addr, + unsigned long *lenp, void **ptrp); + /** + * unmap_physmem() - undo a memory mapping + * + * This must be called after map_physmem() to undo the mapping. + * Some devices can use this to check what has been written into + * their mapped memory and perform an operations they require on it. + * In this way, map/unmap can be used as a sort of handshake between + * the emulated device and its users. + * + * @dev: Emuated device to unmap + * @vaddr: Mapped memory address, as passed to map_physmem() + * @len: Size of area mapped, as returned by map_physmem() + * @return 0 if OK, -ve on error + */ + int (*unmap_physmem)(struct udevice *dev, const void *vaddr, + unsigned long len); +}; + +/* Get access to a PCI device emulator's operations */ +#define pci_get_emul_ops(dev) ((struct dm_pci_emul_ops *)(dev)->driver->ops) + +/** + * sandbox_pci_get_emul() - Get the emulation device for a PCI device + * + * Searches for a suitable emulator for the given PCI bus device + * + * @bus: PCI bus to search + * @find_devfn: PCI device and function address (PCI_DEVFN()) + * @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, + struct udevice **emulp); + +#endif /* CONFIG_DM_PCI */ + +/** + * PCI_DEVICE - macro used to describe a specific pci device + * @vend: the 16 bit PCI Vendor ID + * @dev: the 16 bit PCI Device ID + * + * This macro is used to create a struct pci_device_id that matches a + * specific device. The subvendor and subdevice fields will be set to + * PCI_ANY_ID. + */ +#define PCI_DEVICE(vend, dev) \ + .vendor = (vend), .device = (dev), \ + .subvendor = PCI_ANY_ID, .subdevice = PCI_ANY_ID + +/** + * PCI_DEVICE_SUB - macro used to describe a specific pci device with subsystem + * @vend: the 16 bit PCI Vendor ID + * @dev: the 16 bit PCI Device ID + * @subvend: the 16 bit PCI Subvendor ID + * @subdev: the 16 bit PCI Subdevice ID + * + * This macro is used to create a struct pci_device_id that matches a + * specific device with subsystem information. + */ +#define PCI_DEVICE_SUB(vend, dev, subvend, subdev) \ + .vendor = (vend), .device = (dev), \ + .subvendor = (subvend), .subdevice = (subdev) + +/** + * PCI_DEVICE_CLASS - macro used to describe a specific pci device class + * @dev_class: the class, subclass, prog-if triple for this device + * @dev_class_mask: the class mask for this device + * + * This macro is used to create a struct pci_device_id that matches a + * specific PCI class. The vendor, device, subvendor, and subdevice + * fields will be set to PCI_ANY_ID. + */ +#define PCI_DEVICE_CLASS(dev_class, dev_class_mask) \ + .class = (dev_class), .class_mask = (dev_class_mask), \ + .vendor = PCI_ANY_ID, .device = PCI_ANY_ID, \ + .subvendor = PCI_ANY_ID, .subdevice = PCI_ANY_ID + +/** + * PCI_VDEVICE - macro used to describe a specific pci device in short form + * @vend: the vendor name + * @dev: the 16 bit PCI Device ID + * + * This macro is used to create a struct pci_device_id that matches a + * specific PCI device. The subvendor, and subdevice fields will be set + * to PCI_ANY_ID. The macro allows the next field to follow as the device + * private data. + */ + +#define PCI_VDEVICE(vend, dev) \ + .vendor = PCI_VENDOR_ID_##vend, .device = (dev), \ + .subvendor = PCI_ANY_ID, .subdevice = PCI_ANY_ID, 0, 0 + +/** + * struct pci_driver_entry - Matches a driver to its pci_device_id list + * @driver: Driver to use + * @match: List of match records for this driver, terminated by {} + */ +struct pci_driver_entry { + struct driver *driver; + const struct pci_device_id *match; +}; + +#define U_BOOT_PCI_DEVICE(__name, __match) \ + ll_entry_declare(struct pci_driver_entry, __name, pci_driver_entry) = {\ + .driver = llsym(struct driver, __name, driver), \ + .match = __match, \ + } + +#endif /* __ASSEMBLY__ */ +#endif /* _PCI_H */