pcibr.h
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上传日期:2013-04-10
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- /* $Id$
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License. See the file "COPYING" in the main directory of this archive
- * for more details.
- *
- * Copyright (C) 1992 - 1997, 2000-2001 Silicon Graphics, Inc. All rights reserved.
- */
- #ifndef _ASM_SN_PCI_PCIBR_H
- #define _ASM_SN_PCI_PCIBR_H
- #if defined(__KERNEL__)
- #include <asm/sn/dmamap.h>
- #include <asm/sn/driver.h>
- #include <asm/sn/pio.h>
- #include <asm/sn/pci/pciio.h>
- #include <asm/sn/pci/bridge.h>
- /* =====================================================================
- * symbolic constants used by pcibr's xtalk bus provider
- */
- #define PCIBR_PIOMAP_BUSY 0x80000000
- #define PCIBR_DMAMAP_BUSY 0x80000000
- #define PCIBR_DMAMAP_SSRAM 0x40000000
- #define PCIBR_INTR_BLOCKED 0x40000000
- #define PCIBR_INTR_BUSY 0x80000000
- #ifndef __ASSEMBLY__
- /* =====================================================================
- * opaque types used by pcibr's xtalk bus provider
- */
- typedef struct pcibr_piomap_s *pcibr_piomap_t;
- typedef struct pcibr_dmamap_s *pcibr_dmamap_t;
- typedef struct pcibr_intr_s *pcibr_intr_t;
- /* =====================================================================
- * primary entry points: Bridge (pcibr) device driver
- *
- * These functions are normal device driver entry points
- * and are called along with the similar entry points from
- * other device drivers. They are included here as documentation
- * of their existence and purpose.
- *
- * pcibr_init() is called to inform us that there is a pcibr driver
- * configured into the kernel; it is responsible for registering
- * as a crosstalk widget and providing a routine to be called
- * when a widget with the proper part number is observed.
- *
- * pcibr_attach() is called for each vertex in the hardware graph
- * corresponding to a crosstalk widget with the manufacturer
- * code and part number registered by pcibr_init().
- */
- extern void pcibr_init(void);
- extern int pcibr_attach(devfs_handle_t);
- /* =====================================================================
- * bus provider function table
- *
- * Normally, this table is only handed off explicitly
- * during provider initialization, and the PCI generic
- * layer will stash a pointer to it in the vertex; however,
- * exporting it explicitly enables a performance hack in
- * the generic PCI provider where if we know at compile
- * time that the only possible PCI provider is a
- * pcibr, we can go directly to this ops table.
- */
- extern pciio_provider_t pcibr_provider;
- /* =====================================================================
- * secondary entry points: pcibr PCI bus provider
- *
- * These functions are normally exported explicitly by
- * a direct call from the pcibr initialization routine
- * into the generic crosstalk provider; they are included
- * here to enable a more aggressive performance hack in
- * the generic crosstalk layer, where if we know that the
- * only possible crosstalk provider is pcibr, and we can
- * guarantee that all entry points are properly named, and
- * we can deal with the implicit casting properly, then
- * we can turn many of the generic provider routines into
- * plain brances, or even eliminate them (given sufficient
- * smarts on the part of the compilation system).
- */
- extern pcibr_piomap_t pcibr_piomap_alloc(devfs_handle_t dev,
- device_desc_t dev_desc,
- pciio_space_t space,
- iopaddr_t pci_addr,
- size_t byte_count,
- size_t byte_count_max,
- unsigned flags);
- extern void pcibr_piomap_free(pcibr_piomap_t piomap);
- extern caddr_t pcibr_piomap_addr(pcibr_piomap_t piomap,
- iopaddr_t xtalk_addr,
- size_t byte_count);
- extern void pcibr_piomap_done(pcibr_piomap_t piomap);
- extern caddr_t pcibr_piotrans_addr(devfs_handle_t dev,
- device_desc_t dev_desc,
- pciio_space_t space,
- iopaddr_t pci_addr,
- size_t byte_count,
- unsigned flags);
- extern iopaddr_t pcibr_piospace_alloc(devfs_handle_t dev,
- device_desc_t dev_desc,
- pciio_space_t space,
- size_t byte_count,
- size_t alignment);
- extern void pcibr_piospace_free(devfs_handle_t dev,
- pciio_space_t space,
- iopaddr_t pciaddr,
- size_t byte_count);
- extern pcibr_dmamap_t pcibr_dmamap_alloc(devfs_handle_t dev,
- device_desc_t dev_desc,
- size_t byte_count_max,
- unsigned flags);
- extern void pcibr_dmamap_free(pcibr_dmamap_t dmamap);
- extern iopaddr_t pcibr_dmamap_addr(pcibr_dmamap_t dmamap,
- paddr_t paddr,
- size_t byte_count);
- extern alenlist_t pcibr_dmamap_list(pcibr_dmamap_t dmamap,
- alenlist_t palenlist,
- unsigned flags);
- extern void pcibr_dmamap_done(pcibr_dmamap_t dmamap);
- /*
- * pcibr_get_dmatrans_node() will return the compact node id to which
- * all 32-bit Direct Mapping memory accesses will be directed.
- * (This node id can be different for each PCI bus.)
- */
- extern cnodeid_t pcibr_get_dmatrans_node(devfs_handle_t pconn_vhdl);
- extern iopaddr_t pcibr_dmatrans_addr(devfs_handle_t dev,
- device_desc_t dev_desc,
- paddr_t paddr,
- size_t byte_count,
- unsigned flags);
- extern alenlist_t pcibr_dmatrans_list(devfs_handle_t dev,
- device_desc_t dev_desc,
- alenlist_t palenlist,
- unsigned flags);
- extern void pcibr_dmamap_drain(pcibr_dmamap_t map);
- extern void pcibr_dmaaddr_drain(devfs_handle_t vhdl,
- paddr_t addr,
- size_t bytes);
- extern void pcibr_dmalist_drain(devfs_handle_t vhdl,
- alenlist_t list);
- typedef unsigned pcibr_intr_ibit_f(pciio_info_t info,
- pciio_intr_line_t lines);
- extern void pcibr_intr_ibit_set(devfs_handle_t, pcibr_intr_ibit_f *);
- extern pcibr_intr_t pcibr_intr_alloc(devfs_handle_t dev,
- device_desc_t dev_desc,
- pciio_intr_line_t lines,
- devfs_handle_t owner_dev);
- extern void pcibr_intr_free(pcibr_intr_t intr);
- extern int pcibr_intr_connect(pcibr_intr_t intr);
- extern void pcibr_intr_disconnect(pcibr_intr_t intr);
- extern devfs_handle_t pcibr_intr_cpu_get(pcibr_intr_t intr);
- extern void pcibr_provider_startup(devfs_handle_t pcibr);
- extern void pcibr_provider_shutdown(devfs_handle_t pcibr);
- extern int pcibr_reset(devfs_handle_t dev);
- extern int pcibr_write_gather_flush(devfs_handle_t dev);
- extern pciio_endian_t pcibr_endian_set(devfs_handle_t dev,
- pciio_endian_t device_end,
- pciio_endian_t desired_end);
- extern pciio_priority_t pcibr_priority_set(devfs_handle_t dev,
- pciio_priority_t device_prio);
- extern uint64_t pcibr_config_get(devfs_handle_t conn,
- unsigned reg,
- unsigned size);
- extern void pcibr_config_set(devfs_handle_t conn,
- unsigned reg,
- unsigned size,
- uint64_t value);
- extern int pcibr_error_devenable(devfs_handle_t pconn_vhdl,
- int error_code);
- extern pciio_slot_t pcibr_error_extract(devfs_handle_t pcibr_vhdl,
- pciio_space_t *spacep,
- iopaddr_t *addrp);
- extern int pcibr_wrb_flush(devfs_handle_t pconn_vhdl);
- extern int pcibr_rrb_check(devfs_handle_t pconn_vhdl,
- int *count_vchan0,
- int *count_vchan1,
- int *count_reserved,
- int *count_pool);
- extern int pcibr_alloc_all_rrbs(devfs_handle_t vhdl, int even_odd,
- int dev_1_rrbs, int virt1,
- int dev_2_rrbs, int virt2,
- int dev_3_rrbs, int virt3,
- int dev_4_rrbs, int virt4);
- typedef void
- rrb_alloc_funct_f (devfs_handle_t xconn_vhdl,
- int *vendor_list);
- typedef rrb_alloc_funct_f *rrb_alloc_funct_t;
- void pcibr_set_rrb_callback(devfs_handle_t xconn_vhdl,
- rrb_alloc_funct_f *func);
- extern int pcibr_device_unregister(devfs_handle_t);
- extern int pcibr_dma_enabled(devfs_handle_t);
- /*
- * Bridge-specific flags that can be set via pcibr_device_flags_set
- * and cleared via pcibr_device_flags_clear. Other flags are
- * more generic and are maniuplated through PCI-generic interfaces.
- *
- * Note that all PCI implementation-specific flags (Bridge flags, in
- * this case) are in bits 15-31. The lower 15 bits are reserved
- * for PCI-generic flags.
- *
- * Some of these flags have been "promoted" to the
- * generic layer, so they can be used without having
- * to "know" that the PCI bus is hosted by a Bridge.
- *
- * PCIBR_NO_ATE_ROUNDUP: Request that no rounding up be done when
- * allocating ATE's. ATE count computation will assume that the
- * address to be mapped will start on a page boundary.
- */
- #define PCIBR_NO_ATE_ROUNDUP 0x00008000
- #define PCIBR_WRITE_GATHER 0x00010000 /* please use PCIIO version */
- #define PCIBR_NOWRITE_GATHER 0x00020000 /* please use PCIIO version */
- #define PCIBR_PREFETCH 0x00040000 /* please use PCIIO version */
- #define PCIBR_NOPREFETCH 0x00080000 /* please use PCIIO version */
- #define PCIBR_PRECISE 0x00100000
- #define PCIBR_NOPRECISE 0x00200000
- #define PCIBR_BARRIER 0x00400000
- #define PCIBR_NOBARRIER 0x00800000
- #define PCIBR_VCHAN0 0x01000000
- #define PCIBR_VCHAN1 0x02000000
- #define PCIBR_64BIT 0x04000000
- #define PCIBR_NO64BIT 0x08000000
- #define PCIBR_SWAP 0x10000000
- #define PCIBR_NOSWAP 0x20000000
- #define PCIBR_EXTERNAL_ATES 0x40000000 /* uses external ATEs */
- #define PCIBR_ACTIVE 0x80000000 /* need a "done" */
- /* Flags that have meaning to pcibr_device_flags_{set,clear} */
- #define PCIBR_DEVICE_FLAGS (
- PCIBR_WRITE_GATHER |
- PCIBR_NOWRITE_GATHER |
- PCIBR_PREFETCH |
- PCIBR_NOPREFETCH |
- PCIBR_PRECISE |
- PCIBR_NOPRECISE |
- PCIBR_BARRIER |
- PCIBR_NOBARRIER
- )
- /* Flags that have meaning to *_dmamap_alloc, *_dmatrans_{addr,list} */
- #define PCIBR_DMA_FLAGS (
- PCIBR_PREFETCH |
- PCIBR_NOPREFETCH |
- PCIBR_PRECISE |
- PCIBR_NOPRECISE |
- PCIBR_BARRIER |
- PCIBR_NOBARRIER |
- PCIBR_VCHAN0 |
- PCIBR_VCHAN1
- )
- typedef int pcibr_device_flags_t;
- /*
- * Set bits in the Bridge Device(x) register for this device.
- * "flags" are defined above. NOTE: this includes turning
- * things *OFF* as well as turning them *ON* ...
- */
- extern int pcibr_device_flags_set(devfs_handle_t dev,
- pcibr_device_flags_t flags);
- /*
- * Allocate Read Response Buffers for use by the specified device.
- * count_vchan0 is the total number of buffers desired for the
- * "normal" channel. count_vchan1 is the total number of buffers
- * desired for the "virtual" channel. Returns 0 on success, or
- * <0 on failure, which occurs when we're unable to allocate any
- * buffers to a channel that desires at least one buffer.
- */
- extern int pcibr_rrb_alloc(devfs_handle_t pconn_vhdl,
- int *count_vchan0,
- int *count_vchan1);
- /*
- * Get the starting PCIbus address out of the given DMA map.
- * This function is supposed to be used by a close friend of PCI bridge
- * since it relies on the fact that the starting address of the map is fixed at
- * the allocation time in the current implementation of PCI bridge.
- */
- extern iopaddr_t pcibr_dmamap_pciaddr_get(pcibr_dmamap_t);
- extern xwidget_intr_preset_f pcibr_xintr_preset;
- extern void pcibr_hints_fix_rrbs(devfs_handle_t);
- extern void pcibr_hints_dualslot(devfs_handle_t, pciio_slot_t, pciio_slot_t);
- extern void pcibr_hints_subdevs(devfs_handle_t, pciio_slot_t, ulong);
- extern void pcibr_hints_handsoff(devfs_handle_t);
- typedef unsigned pcibr_intr_bits_f(pciio_info_t, pciio_intr_line_t);
- extern void pcibr_hints_intr_bits(devfs_handle_t, pcibr_intr_bits_f *);
- extern int pcibr_asic_rev(devfs_handle_t);
- #endif /* __ASSEMBLY__ */
- #endif /* #if defined(__KERNEL__) */
- /*
- * Some useful ioctls into the pcibr driver
- */
- #define PCIBR 'p'
- #define _PCIBR(x) ((PCIBR << 8) | (x))
- #define PCIBR_SLOT_STARTUP _PCIBR(1)
- #define PCIBR_SLOT_SHUTDOWN _PCIBR(2)
- #define PCIBR_SLOT_QUERY _PCIBR(3)
- /*
- * Bit defintions for variable slot_status in struct
- * pcibr_soft_slot_s. They are here so that both
- * the pcibr driver and the pciconfig command can
- * reference them.
- */
- #define SLOT_STARTUP_CMPLT 0x01
- #define SLOT_STARTUP_INCMPLT 0x02
- #define SLOT_SHUTDOWN_CMPLT 0x04
- #define SLOT_SHUTDOWN_INCMPLT 0x08
- #define SLOT_POWER_UP 0x10
- #define SLOT_POWER_DOWN 0x20
- #define SLOT_IS_SYS_CRITICAL 0x40
- #define SLOT_STATUS_MASK (SLOT_STARTUP_CMPLT | SLOT_STARTUP_INCMPLT |
- SLOT_SHUTDOWN_CMPLT | SLOT_SHUTDOWN_INCMPLT)
- #define SLOT_POWER_MASK (SLOT_POWER_UP | SLOT_POWER_DOWN)
- /*
- * Bit definitions for variable resp_f_staus.
- * They are here so that both the pcibr driver
- * and the pciconfig command can reference them.
- */
- #define FUNC_IS_VALID 0x01
- #define FUNC_IS_SYS_CRITICAL 0x02
- /*
- * Structures for requesting PCI bridge information and receiving a response
- */
- typedef struct pcibr_slot_req_s *pcibr_slot_req_t;
- typedef struct pcibr_slot_up_resp_s *pcibr_slot_up_resp_t;
- typedef struct pcibr_slot_down_resp_s *pcibr_slot_down_resp_t;
- typedef struct pcibr_slot_info_resp_s *pcibr_slot_info_resp_t;
- typedef struct pcibr_slot_func_info_resp_s *pcibr_slot_func_info_resp_t;
- #define L1_QSIZE 128 /* our L1 message buffer size */
- struct pcibr_slot_req_s {
- int req_slot;
- union {
- pcibr_slot_up_resp_t up;
- pcibr_slot_down_resp_t down;
- pcibr_slot_info_resp_t query;
- void *any;
- } req_respp;
- int req_size;
- };
- struct pcibr_slot_up_resp_s {
- int resp_sub_errno;
- char resp_l1_msg[L1_QSIZE + 1];
- };
- struct pcibr_slot_down_resp_s {
- int resp_sub_errno;
- char resp_l1_msg[L1_QSIZE + 1];
- };
- struct pcibr_slot_info_req_s {
- int req_slot;
- pcibr_slot_info_resp_t req_respp;
- int req_size;
- };
- struct pcibr_slot_info_resp_s {
- int resp_has_host;
- char resp_host_slot;
- devfs_handle_t resp_slot_conn;
- char resp_slot_conn_name[MAXDEVNAME];
- int resp_slot_status;
- int resp_l1_bus_num;
- int resp_bss_ninfo;
- char resp_bss_devio_bssd_space[16];
- iopaddr_t resp_bss_devio_bssd_base;
- bridgereg_t resp_bss_device;
- int resp_bss_pmu_uctr;
- int resp_bss_d32_uctr;
- int resp_bss_d64_uctr;
- iopaddr_t resp_bss_d64_base;
- unsigned resp_bss_d64_flags;
- iopaddr_t resp_bss_d32_base;
- unsigned resp_bss_d32_flags;
- int resp_bss_ext_ates_active;
- volatile unsigned *resp_bss_cmd_pointer;
- unsigned resp_bss_cmd_shadow;
- int resp_bs_rrb_valid;
- int resp_bs_rrb_valid_v;
- int resp_bs_rrb_res;
- bridgereg_t resp_b_resp;
- bridgereg_t resp_b_int_device;
- bridgereg_t resp_b_int_enable;
- bridgereg_t resp_b_int_host;
- struct pcibr_slot_func_info_resp_s {
- int resp_f_status;
- char resp_f_slot_name[MAXDEVNAME];
- char resp_f_bus;
- char resp_f_slot;
- char resp_f_func;
- char resp_f_master_name[MAXDEVNAME];
- void *resp_f_pops;
- error_handler_f *resp_f_efunc;
- error_handler_arg_t resp_f_einfo;
- int resp_f_vendor;
- int resp_f_device;
- struct {
- char resp_w_space[16];
- iopaddr_t resp_w_base;
- size_t resp_w_size;
- } resp_f_window[6];
- unsigned resp_f_rbase;
- unsigned resp_f_rsize;
- int resp_f_ibit[4];
- int resp_f_att_det_error;
- } resp_func[8];
- };
- /*
- * PCI specific errors, interpreted by pciconfig command
- */
- /* EPERM 1 */
- #define PCI_SLOT_ALREADY_UP 2 /* slot already up */
- #define PCI_SLOT_ALREADY_DOWN 3 /* slot already down */
- #define PCI_IS_SYS_CRITICAL 4 /* slot is system critical */
- /* EIO 5 */
- /* ENXIO 6 */
- #define PCI_L1_ERR 7 /* L1 console command error */
- #define PCI_NOT_A_BRIDGE 8 /* device is not a bridge */
- #define PCI_SLOT_IN_SHOEHORN 9 /* slot is in a shorhorn */
- #define PCI_NOT_A_SLOT 10 /* slot is invalid */
- #define PCI_RESP_AREA_TOO_SMALL 11 /* slot is invalid */
- /* ENOMEM 12 */
- #define PCI_NO_DRIVER 13 /* no driver for device */
- /* EFAULT 14 */
- #define PCI_EMPTY_33MHZ 15 /* empty 33 MHz bus */
- /* EBUSY 16 */
- #define PCI_SLOT_RESET_ERR 17 /* slot reset error */
- #define PCI_SLOT_INFO_INIT_ERR 18 /* slot info init error */
- /* ENODEV 19 */
- #define PCI_SLOT_ADDR_INIT_ERR 20 /* slot addr space init error */
- #define PCI_SLOT_DEV_INIT_ERR 21 /* slot device init error */
- /* EINVAL 22 */
- #define PCI_SLOT_GUEST_INIT_ERR 23 /* slot guest info init error */
- #define PCI_SLOT_RRB_ALLOC_ERR 24 /* slot initial rrb alloc error */
- #define PCI_SLOT_DRV_ATTACH_ERR 25 /* driver attach error */
- #define PCI_SLOT_DRV_DETACH_ERR 26 /* driver detach error */
- /* ERANGE 34 */
- /* EUNATCH 42 */
- #endif /* _ASM_SN_PCI_PCIBR_H */