/* $Id$ * * 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 #include #include #include #include /* ===================================================================== * 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); 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_rrb_alloc(devfs_handle_t pconn_vhdl, int *count_vchan0, int *count_vchan1); 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 void 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, uint64_t); 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_POWERUP _PCIBR(1) #define PCIBR_SLOT_SHUTDOWN _PCIBR(2) #define PCIBR_SLOT_INQUIRY _PCIBR(3) #endif /* _ASM_SN_PCI_PCIBR_H */