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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 Silicon Graphics, Inc.
* Copyright (C) 2000 by Colin Ngam
*/
#ifndef _ASM_SN_PCI_PCIBR_H
#define _ASM_SN_PCI_PCIBR_H
#if defined(__KERNEL__)
#include <asm/sn/dmamap.h>
#include <asm/sn/iobus.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
#if LANGUAGE_C
/* =====================================================================
* 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 existance 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,
intr_func_t intr_func,
intr_arg_t intr_arg,
void *thread);
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 /* _LANGUAGE_C */
#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_info_req_s *pcibr_slot_info_req_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;
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];
};
#endif /* _ASM_SN_PCI_PCIBR_H */
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