/* * Adaptec AIC7xxx device driver for Linux. * * Copyright (c) 1994 John Aycock * The University of Calgary Department of Computer Science. * * 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, 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 * along with this program; see the file COPYING. If not, write to * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. * * Copyright (c) 2000-2003 Adaptec Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions, and the following disclaimer, * without modification. * 2. Redistributions in binary form must reproduce at minimum a disclaimer * substantially similar to the "NO WARRANTY" disclaimer below * ("Disclaimer") and any redistribution must be conditioned upon * including a substantially similar Disclaimer requirement for further * binary redistribution. * 3. Neither the names of the above-listed copyright holders nor the names * of any contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * Alternatively, this software may be distributed under the terms of the * GNU General Public License ("GPL") version 2 as published by the Free * Software Foundation. * * NO WARRANTY * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGES. * * $Id: //depot/aic7xxx/linux/drivers/scsi/aic7xxx/aic7xxx_osm.h#151 $ * */ #ifndef _AIC7XXX_LINUX_H_ #define _AIC7XXX_LINUX_H_ #include #include #include #include #include #include #include #include #include #include #ifndef KERNEL_VERSION #define KERNEL_VERSION(x,y,z) (((x)<<16)+((y)<<8)+(z)) #endif #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0) #include /* For tasklet support. */ #include #include #else #include #endif /* Core SCSI definitions */ #define AIC_LIB_PREFIX ahc #include "scsi.h" #include "hosts.h" /* Name space conflict with BSD queue macros */ #ifdef LIST_HEAD #undef LIST_HEAD #endif #include "cam.h" #include "queue.h" #include "scsi_message.h" #include "aiclib.h" /*********************************** Debugging ********************************/ #ifdef CONFIG_AIC7XXX_DEBUG_ENABLE #ifdef CONFIG_AIC7XXX_DEBUG_MASK #define AHC_DEBUG 1 #define AHC_DEBUG_OPTS CONFIG_AIC7XXX_DEBUG_MASK #else /* * Compile in debugging code, but do not enable any printfs. */ #define AHC_DEBUG 1 #endif /* No debugging code. */ #endif /************************* Forward Declarations *******************************/ struct ahc_softc; typedef struct pci_dev *ahc_dev_softc_t; typedef Scsi_Cmnd *ahc_io_ctx_t; /******************************* Byte Order ***********************************/ #define ahc_htobe16(x) cpu_to_be16(x) #define ahc_htobe32(x) cpu_to_be32(x) #define ahc_htobe64(x) cpu_to_be64(x) #define ahc_htole16(x) cpu_to_le16(x) #define ahc_htole32(x) cpu_to_le32(x) #define ahc_htole64(x) cpu_to_le64(x) #define ahc_be16toh(x) be16_to_cpu(x) #define ahc_be32toh(x) be32_to_cpu(x) #define ahc_be64toh(x) be64_to_cpu(x) #define ahc_le16toh(x) le16_to_cpu(x) #define ahc_le32toh(x) le32_to_cpu(x) #define ahc_le64toh(x) le64_to_cpu(x) #ifndef LITTLE_ENDIAN #define LITTLE_ENDIAN 1234 #endif #ifndef BIG_ENDIAN #define BIG_ENDIAN 4321 #endif #ifndef BYTE_ORDER #if defined(__BIG_ENDIAN) #define BYTE_ORDER BIG_ENDIAN #endif #if defined(__LITTLE_ENDIAN) #define BYTE_ORDER LITTLE_ENDIAN #endif #endif /* BYTE_ORDER */ /************************* Configuration Data *********************************/ extern u_int aic7xxx_no_probe; extern u_int aic7xxx_allow_memio; extern int aic7xxx_detect_complete; extern Scsi_Host_Template aic7xxx_driver_template; /***************************** Bus Space/DMA **********************************/ #if LINUX_VERSION_CODE > KERNEL_VERSION(2,2,17) typedef dma_addr_t bus_addr_t; #else typedef uint32_t bus_addr_t; #endif typedef uint32_t bus_size_t; typedef enum { BUS_SPACE_MEMIO, BUS_SPACE_PIO } bus_space_tag_t; typedef union { u_long ioport; volatile uint8_t *maddr; } bus_space_handle_t; typedef struct bus_dma_segment { bus_addr_t ds_addr; bus_size_t ds_len; } bus_dma_segment_t; struct ahc_linux_dma_tag { bus_size_t alignment; bus_size_t boundary; bus_size_t maxsize; }; typedef struct ahc_linux_dma_tag* bus_dma_tag_t; struct ahc_linux_dmamap { bus_addr_t bus_addr; }; typedef struct ahc_linux_dmamap* bus_dmamap_t; typedef int bus_dma_filter_t(void*, bus_addr_t); typedef void bus_dmamap_callback_t(void *, bus_dma_segment_t *, int, int); #define BUS_DMA_WAITOK 0x0 #define BUS_DMA_NOWAIT 0x1 #define BUS_DMA_ALLOCNOW 0x2 #define BUS_DMA_LOAD_SEGS 0x4 /* * Argument is an S/G list not * a single buffer. */ #define BUS_SPACE_MAXADDR 0xFFFFFFFF #define BUS_SPACE_MAXADDR_32BIT 0xFFFFFFFF #define BUS_SPACE_MAXSIZE_32BIT 0xFFFFFFFF int ahc_dma_tag_create(struct ahc_softc *, bus_dma_tag_t /*parent*/, bus_size_t /*alignment*/, bus_size_t /*boundary*/, bus_addr_t /*lowaddr*/, bus_addr_t /*highaddr*/, bus_dma_filter_t*/*filter*/, void */*filterarg*/, bus_size_t /*maxsize*/, int /*nsegments*/, bus_size_t /*maxsegsz*/, int /*flags*/, bus_dma_tag_t */*dma_tagp*/); void ahc_dma_tag_destroy(struct ahc_softc *, bus_dma_tag_t /*tag*/); int ahc_dmamem_alloc(struct ahc_softc *, bus_dma_tag_t /*dmat*/, void** /*vaddr*/, int /*flags*/, bus_dmamap_t* /*mapp*/); void ahc_dmamem_free(struct ahc_softc *, bus_dma_tag_t /*dmat*/, void* /*vaddr*/, bus_dmamap_t /*map*/); void ahc_dmamap_destroy(struct ahc_softc *, bus_dma_tag_t /*tag*/, bus_dmamap_t /*map*/); int ahc_dmamap_load(struct ahc_softc *ahc, bus_dma_tag_t /*dmat*/, bus_dmamap_t /*map*/, void * /*buf*/, bus_size_t /*buflen*/, bus_dmamap_callback_t *, void */*callback_arg*/, int /*flags*/); int ahc_dmamap_unload(struct ahc_softc *, bus_dma_tag_t, bus_dmamap_t); /* * Operations performed by ahc_dmamap_sync(). */ #define BUS_DMASYNC_PREREAD 0x01 /* pre-read synchronization */ #define BUS_DMASYNC_POSTREAD 0x02 /* post-read synchronization */ #define BUS_DMASYNC_PREWRITE 0x04 /* pre-write synchronization */ #define BUS_DMASYNC_POSTWRITE 0x08 /* post-write synchronization */ /* * XXX * ahc_dmamap_sync is only used on buffers allocated with * the pci_alloc_consistent() API. Although I'm not sure how * this works on architectures with a write buffer, Linux does * not have an API to sync "coherent" memory. Perhaps we need * to do an mb()? */ #define ahc_dmamap_sync(ahc, dma_tag, dmamap, offset, len, op) /************************** Timer DataStructures ******************************/ typedef struct timer_list ahc_timer_t; /********************************** Includes **********************************/ #ifdef CONFIG_AIC7XXX_REG_PRETTY_PRINT #define AIC_DEBUG_REGISTERS 1 #else #define AIC_DEBUG_REGISTERS 0 #endif #include "aic7xxx.h" /***************************** Timer Facilities *******************************/ #define ahc_timer_init init_timer #define ahc_timer_stop del_timer_sync typedef void ahc_linux_callback_t (u_long); static __inline void ahc_timer_reset(ahc_timer_t *timer, int usec, ahc_callback_t *func, void *arg); static __inline void ahc_scb_timer_reset(struct scb *scb, u_int usec); static __inline void ahc_timer_reset(ahc_timer_t *timer, int usec, ahc_callback_t *func, void *arg) { struct ahc_softc *ahc; ahc = (struct ahc_softc *)arg; del_timer(timer); timer->data = (u_long)arg; timer->expires = jiffies + (usec * HZ)/1000000; timer->function = (ahc_linux_callback_t*)func; add_timer(timer); } static __inline void ahc_scb_timer_reset(struct scb *scb, u_int usec) { mod_timer(&scb->io_ctx->eh_timeout, jiffies + (usec * HZ)/1000000); } /***************************** SMP support ************************************/ #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,3,17) #include #elif LINUX_VERSION_CODE >= KERNEL_VERSION(2,1,93) #include #endif #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0) || defined(SCSI_HAS_HOST_LOCK)) #define AHC_SCSI_HAS_HOST_LOCK 1 #else #define AHC_SCSI_HAS_HOST_LOCK 0 #endif #define AIC7XXX_DRIVER_VERSION "6.2.36" /**************************** Front End Queues ********************************/ /* * Data structure used to cast the Linux struct scsi_cmnd to something * that allows us to use the queue macros. The linux structure has * plenty of space to hold the links fields as required by the queue * macros, but the queue macors require them to have the correct type. */ struct ahc_cmd_internal { /* Area owned by the Linux scsi layer. */ uint8_t private[offsetof(struct scsi_cmnd, SCp.Status)]; union { STAILQ_ENTRY(ahc_cmd) ste; LIST_ENTRY(ahc_cmd) le; TAILQ_ENTRY(ahc_cmd) tqe; } links; uint32_t end; }; struct ahc_cmd { union { struct ahc_cmd_internal icmd; struct scsi_cmnd scsi_cmd; } un; }; #define acmd_icmd(cmd) ((cmd)->un.icmd) #define acmd_scsi_cmd(cmd) ((cmd)->un.scsi_cmd) #define acmd_links un.icmd.links /*************************** Device Data Structures ***************************/ /* * A per probed device structure used to deal with some error recovery * scenarios that the Linux mid-layer code just doesn't know how to * handle. The structure allocated for a device only becomes persistent * after a successfully completed inquiry command to the target when * that inquiry data indicates a lun is present. */ TAILQ_HEAD(ahc_busyq, ahc_cmd); typedef enum { AHC_DEV_UNCONFIGURED = 0x01, AHC_DEV_FREEZE_TIL_EMPTY = 0x02, /* Freeze queue until active == 0 */ AHC_DEV_TIMER_ACTIVE = 0x04, /* Our timer is active */ AHC_DEV_ON_RUN_LIST = 0x08, /* Queued to be run later */ AHC_DEV_Q_BASIC = 0x10, /* Allow basic device queuing */ AHC_DEV_Q_TAGGED = 0x20, /* Allow full SCSI2 command queueing */ AHC_DEV_PERIODIC_OTAG = 0x40, /* Send OTAG to prevent starvation */ AHC_DEV_SLAVE_CONFIGURED = 0x80 /* slave_configure() has been called */ } ahc_linux_dev_flags; struct ahc_linux_target; struct ahc_linux_device { TAILQ_ENTRY(ahc_linux_device) links; struct ahc_busyq busyq; /* * The number of transactions currently * queued to the device. */ int active; /* * The currently allowed number of * transactions that can be queued to * the device. Must be signed for * conversion from tagged to untagged * mode where the device may have more * than one outstanding active transaction. */ int openings; /* * A positive count indicates that this * device's queue is halted. */ u_int qfrozen; /* * Cumulative command counter. */ u_long commands_issued; /* * The number of tagged transactions when * running at our current opening level * that have been successfully received by * this device since the last QUEUE FULL. */ u_int tag_success_count; #define AHC_TAG_SUCCESS_INTERVAL 50 ahc_linux_dev_flags flags; /* * Per device timer. */ struct timer_list timer; /* * The high limit for the tags variable. */ u_int maxtags; /* * The computed number of tags outstanding * at the time of the last QUEUE FULL event. */ u_int tags_on_last_queuefull; /* * How many times we have seen a queue full * with the same number of tags. This is used * to stop our adaptive queue depth algorithm * on devices with a fixed number of tags. */ u_int last_queuefull_same_count; #define AHC_LOCK_TAGS_COUNT 50 /* * How many transactions have been queued * without the device going idle. We use * this statistic to determine when to issue * an ordered tag to prevent transaction * starvation. This statistic is only updated * if the AHC_DEV_PERIODIC_OTAG flag is set * on this device. */ u_int commands_since_idle_or_otag; #define AHC_OTAG_THRESH 500 int lun; Scsi_Device *scsi_device; struct ahc_linux_target *target; }; typedef enum { AHC_DV_REQUIRED = 0x01, AHC_INQ_VALID = 0x02, AHC_BASIC_DV = 0x04, AHC_ENHANCED_DV = 0x08 } ahc_linux_targ_flags; /* DV States */ typedef enum { AHC_DV_STATE_EXIT = 0, AHC_DV_STATE_INQ_SHORT_ASYNC, AHC_DV_STATE_INQ_ASYNC, AHC_DV_STATE_INQ_ASYNC_VERIFY, AHC_DV_STATE_TUR, AHC_DV_STATE_REBD, AHC_DV_STATE_INQ_VERIFY, AHC_DV_STATE_WEB, AHC_DV_STATE_REB, AHC_DV_STATE_SU, AHC_DV_STATE_BUSY } ahc_dv_state; struct ahc_linux_target { struct ahc_linux_device *devices[AHC_NUM_LUNS]; int channel; int target; int refcount; struct ahc_transinfo last_tinfo; struct ahc_softc *ahc; ahc_linux_targ_flags flags; struct scsi_inquiry_data *inq_data; /* * The next "fallback" period to use for narrow/wide transfers. */ uint8_t dv_next_narrow_period; uint8_t dv_next_wide_period; uint8_t dv_max_width; uint8_t dv_max_ppr_options; uint8_t dv_last_ppr_options; u_int dv_echo_size; ahc_dv_state dv_state; u_int dv_state_retry; char *dv_buffer; char *dv_buffer1; }; /********************* Definitions Required by the Core ***********************/ /* * Number of SG segments we require. So long as the S/G segments for * a particular transaction are allocated in a physically contiguous * manner and are allocated below 4GB, the number of S/G segments is * unrestricted. */ #if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0) /* * We dynamically adjust the number of segments in pre-2.5 kernels to * avoid fragmentation issues in the SCSI mid-layer's private memory * allocator. See aic7xxx_osm.c ahc_linux_size_nseg() for details. */ extern u_int ahc_linux_nseg; #define AHC_NSEG ahc_linux_nseg #define AHC_LINUX_MIN_NSEG 64 #else #define AHC_NSEG 128 #endif /* * Per-SCB OSM storage. */ typedef enum { AHC_UP_EH_SEMAPHORE = 0x1 } ahc_linux_scb_flags; struct scb_platform_data { struct ahc_linux_device *dev; bus_addr_t buf_busaddr; uint32_t xfer_len; #if LINUX_VERSION_CODE < KERNEL_VERSION(2,3,0) uint32_t resid; /* Transfer residual */ #endif uint32_t sense_resid; /* Auto-Sense residual */ ahc_linux_scb_flags flags; }; /* * Define a structure used for each host adapter. All members are * aligned on a boundary >= the size of the member to honor the * alignment restrictions of the various platforms supported by * this driver. */ typedef enum { AHC_DV_WAIT_SIMQ_EMPTY = 0x01, AHC_DV_WAIT_SIMQ_RELEASE = 0x02, AHC_DV_ACTIVE = 0x04, AHC_DV_SHUTDOWN = 0x08, AHC_RUN_CMPLT_Q_TIMER = 0x10 } ahc_linux_softc_flags; TAILQ_HEAD(ahc_completeq, ahc_cmd); struct ahc_platform_data { /* * Fields accessed from interrupt context. */ struct ahc_linux_target *targets[AHC_NUM_TARGETS]; TAILQ_HEAD(, ahc_linux_device) device_runq; struct ahc_completeq completeq; spinlock_t spin_lock; #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0) struct tasklet_struct runq_tasklet; #endif u_int qfrozen; pid_t dv_pid; struct timer_list completeq_timer; struct timer_list reset_timer; struct semaphore eh_sem; struct semaphore dv_sem; struct semaphore dv_cmd_sem; /* XXX This needs to be in * the target struct */ struct scsi_device *dv_scsi_dev; struct Scsi_Host *host; /* pointer to scsi host */ #define AHC_LINUX_NOIRQ ((uint32_t)~0) uint32_t irq; /* IRQ for this adapter */ uint32_t bios_address; uint32_t mem_busaddr; /* Mem Base Addr */ bus_addr_t hw_dma_mask; ahc_linux_softc_flags flags; }; /************************** OS Utility Wrappers *******************************/ #define printf printk #define M_NOWAIT GFP_ATOMIC #define M_WAITOK 0 #define malloc(size, type, flags) kmalloc(size, flags) #define free(ptr, type) kfree(ptr) static __inline void ahc_delay(long); static __inline void ahc_delay(long usec) { /* * udelay on Linux can have problems for * multi-millisecond waits. Wait at most * 1024us per call. */ while (usec > 0) { udelay(usec % 1024); usec -= 1024; } } /***************************** Low Level I/O **********************************/ static __inline uint8_t ahc_inb(struct ahc_softc * ahc, long port); static __inline void ahc_outb(struct ahc_softc * ahc, long port, uint8_t val); static __inline void ahc_outsb(struct ahc_softc * ahc, long port, uint8_t *, int count); static __inline void ahc_insb(struct ahc_softc * ahc, long port, uint8_t *, int count); static __inline uint8_t ahc_inb(struct ahc_softc * ahc, long port) { uint8_t x; if (ahc->tag == BUS_SPACE_MEMIO) { x = readb(ahc->bsh.maddr + port); } else { x = inb(ahc->bsh.ioport + port); } mb(); return (x); } static __inline void ahc_outb(struct ahc_softc * ahc, long port, uint8_t val) { if (ahc->tag == BUS_SPACE_MEMIO) { writeb(val, ahc->bsh.maddr + port); } else { outb(val, ahc->bsh.ioport + port); } mb(); } static __inline void ahc_outsb(struct ahc_softc * ahc, long port, uint8_t *array, int count) { int i; /* * There is probably a more efficient way to do this on Linux * but we don't use this for anything speed critical and this * should work. */ for (i = 0; i < count; i++) ahc_outb(ahc, port, *array++); } static __inline void ahc_insb(struct ahc_softc * ahc, long port, uint8_t *array, int count) { int i; /* * There is probably a more efficient way to do this on Linux * but we don't use this for anything speed critical and this * should work. */ for (i = 0; i < count; i++) *array++ = ahc_inb(ahc, port); } /**************************** Initialization **********************************/ int ahc_linux_register_host(struct ahc_softc *, Scsi_Host_Template *); uint64_t ahc_linux_get_memsize(void); /*************************** Pretty Printing **********************************/ struct info_str { char *buffer; int length; off_t offset; int pos; }; void ahc_format_transinfo(struct info_str *info, struct ahc_transinfo *tinfo); /******************************** Locking *************************************/ /* Lock protecting internal data structures */ static __inline void ahc_lockinit(struct ahc_softc *); static __inline void ahc_lock(struct ahc_softc *, unsigned long *flags); static __inline void ahc_unlock(struct ahc_softc *, unsigned long *flags); /* Lock acquisition and release of the above lock in midlayer entry points. */ static __inline void ahc_midlayer_entrypoint_lock(struct ahc_softc *, unsigned long *flags); static __inline void ahc_midlayer_entrypoint_unlock(struct ahc_softc *, unsigned long *flags); /* Lock held during command compeletion to the upper layer */ static __inline void ahc_done_lockinit(struct ahc_softc *); static __inline void ahc_done_lock(struct ahc_softc *, unsigned long *flags); static __inline void ahc_done_unlock(struct ahc_softc *, unsigned long *flags); /* Lock held during ahc_list manipulation and ahc softc frees */ extern spinlock_t ahc_list_spinlock; static __inline void ahc_list_lockinit(void); static __inline void ahc_list_lock(unsigned long *flags); static __inline void ahc_list_unlock(unsigned long *flags); static __inline void ahc_lockinit(struct ahc_softc *ahc) { spin_lock_init(&ahc->platform_data->spin_lock); } static __inline void ahc_lock(struct ahc_softc *ahc, unsigned long *flags) { spin_lock_irqsave(&ahc->platform_data->spin_lock, *flags); } static __inline void ahc_unlock(struct ahc_softc *ahc, unsigned long *flags) { spin_unlock_irqrestore(&ahc->platform_data->spin_lock, *flags); } static __inline void ahc_midlayer_entrypoint_lock(struct ahc_softc *ahc, unsigned long *flags) { /* * In 2.5.X and some 2.4.X versions, the midlayer takes our * lock just before calling us, so we avoid locking again. * For other kernel versions, the io_request_lock is taken * just before our entry point is called. In this case, we * trade the io_request_lock for our per-softc lock. */ #if AHC_SCSI_HAS_HOST_LOCK == 0 spin_unlock(&io_request_lock); spin_lock(&ahc->platform_data->spin_lock); #endif } static __inline void ahc_midlayer_entrypoint_unlock(struct ahc_softc *ahc, unsigned long *flags) { #if AHC_SCSI_HAS_HOST_LOCK == 0 spin_unlock(&ahc->platform_data->spin_lock); spin_lock(&io_request_lock); #endif } static __inline void ahc_done_lockinit(struct ahc_softc *ahc) { /* * In 2.5.X, our own lock is held during completions. * In previous versions, the io_request_lock is used. * In either case, we can't initialize this lock again. */ } static __inline void ahc_done_lock(struct ahc_softc *ahc, unsigned long *flags) { #if AHC_SCSI_HAS_HOST_LOCK == 0 spin_lock_irqsave(&io_request_lock, *flags); #endif } static __inline void ahc_done_unlock(struct ahc_softc *ahc, unsigned long *flags) { #if AHC_SCSI_HAS_HOST_LOCK == 0 spin_unlock_irqrestore(&io_request_lock, *flags); #endif } static __inline void ahc_list_lockinit(void) { spin_lock_init(&ahc_list_spinlock); } static __inline void ahc_list_lock(unsigned long *flags) { spin_lock_irqsave(&ahc_list_spinlock, *flags); } static __inline void ahc_list_unlock(unsigned long *flags) { spin_unlock_irqrestore(&ahc_list_spinlock, *flags); } /******************************* PCI Definitions ******************************/ /* * PCIM_xxx: mask to locate subfield in register * PCIR_xxx: config register offset * PCIC_xxx: device class * PCIS_xxx: device subclass * PCIP_xxx: device programming interface * PCIV_xxx: PCI vendor ID (only required to fixup ancient devices) * PCID_xxx: device ID */ #define PCIR_DEVVENDOR 0x00 #define PCIR_VENDOR 0x00 #define PCIR_DEVICE 0x02 #define PCIR_COMMAND 0x04 #define PCIM_CMD_PORTEN 0x0001 #define PCIM_CMD_MEMEN 0x0002 #define PCIM_CMD_BUSMASTEREN 0x0004 #define PCIM_CMD_MWRICEN 0x0010 #define PCIM_CMD_PERRESPEN 0x0040 #define PCIM_CMD_SERRESPEN 0x0100 #define PCIR_STATUS 0x06 #define PCIR_REVID 0x08 #define PCIR_PROGIF 0x09 #define PCIR_SUBCLASS 0x0a #define PCIR_CLASS 0x0b #define PCIR_CACHELNSZ 0x0c #define PCIR_LATTIMER 0x0d #define PCIR_HEADERTYPE 0x0e #define PCIM_MFDEV 0x80 #define PCIR_BIST 0x0f #define PCIR_CAP_PTR 0x34 /* config registers for header type 0 devices */ #define PCIR_MAPS 0x10 #define PCIR_SUBVEND_0 0x2c #define PCIR_SUBDEV_0 0x2e #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0) extern struct pci_driver aic7xxx_pci_driver; #endif typedef enum { AHC_POWER_STATE_D0, AHC_POWER_STATE_D1, AHC_POWER_STATE_D2, AHC_POWER_STATE_D3 } ahc_power_state; /**************************** VL/EISA Routines ********************************/ #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0) \ && (defined(__i386__) || defined(__alpha__)) \ && (!defined(CONFIG_EISA))) #define CONFIG_EISA #endif #ifdef CONFIG_EISA extern uint32_t aic7xxx_probe_eisa_vl; void ahc_linux_eisa_init(void); void ahc_linux_eisa_exit(void); int aic7770_map_registers(struct ahc_softc *ahc, u_int port); int aic7770_map_int(struct ahc_softc *ahc, u_int irq); #endif /******************************* PCI Routines *********************************/ #ifdef CONFIG_PCI void ahc_power_state_change(struct ahc_softc *ahc, ahc_power_state new_state); int ahc_linux_pci_init(void); void ahc_linux_pci_exit(void); int ahc_pci_map_registers(struct ahc_softc *ahc); int ahc_pci_map_int(struct ahc_softc *ahc); static __inline uint32_t ahc_pci_read_config(ahc_dev_softc_t pci, int reg, int width); static __inline uint32_t ahc_pci_read_config(ahc_dev_softc_t pci, int reg, int width) { switch (width) { case 1: { uint8_t retval; pci_read_config_byte(pci, reg, &retval); return (retval); } case 2: { uint16_t retval; pci_read_config_word(pci, reg, &retval); return (retval); } case 4: { uint32_t retval; pci_read_config_dword(pci, reg, &retval); return (retval); } default: panic("ahc_pci_read_config: Read size too big"); /* NOTREACHED */ return (0); } } static __inline void ahc_pci_write_config(ahc_dev_softc_t pci, int reg, uint32_t value, int width); static __inline void ahc_pci_write_config(ahc_dev_softc_t pci, int reg, uint32_t value, int width) { switch (width) { case 1: pci_write_config_byte(pci, reg, value); break; case 2: pci_write_config_word(pci, reg, value); break; case 4: pci_write_config_dword(pci, reg, value); break; default: panic("ahc_pci_write_config: Write size too big"); /* NOTREACHED */ } } static __inline int ahc_get_pci_function(ahc_dev_softc_t); static __inline int ahc_get_pci_function(ahc_dev_softc_t pci) { return (PCI_FUNC(pci->devfn)); } static __inline int ahc_get_pci_slot(ahc_dev_softc_t); static __inline int ahc_get_pci_slot(ahc_dev_softc_t pci) { return (PCI_SLOT(pci->devfn)); } static __inline int ahc_get_pci_bus(ahc_dev_softc_t); static __inline int ahc_get_pci_bus(ahc_dev_softc_t pci) { return (pci->bus->number); } #endif static __inline void ahc_flush_device_writes(struct ahc_softc *); static __inline void ahc_flush_device_writes(struct ahc_softc *ahc) { /* XXX Is this sufficient for all architectures??? */ ahc_inb(ahc, INTSTAT); } #if LINUX_VERSION_CODE <= KERNEL_VERSION(2,3,0) #define pci_map_sg(pdev, sg_list, nseg, direction) (nseg) #define pci_unmap_sg(pdev, sg_list, nseg, direction) #define sg_dma_address(sg) (VIRT_TO_BUS((sg)->address)) #define sg_dma_len(sg) ((sg)->length) #define pci_map_single(pdev, buffer, bufflen, direction) \ (VIRT_TO_BUS(buffer)) #define pci_unmap_single(pdev, buffer, buflen, direction) #endif #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,3) #define ahc_pci_set_dma_mask pci_set_dma_mask #else /* * Always "return" 0 for success. */ #define ahc_pci_set_dma_mask(dev_softc, mask) \ (((dev_softc)->dma_mask = mask) && 0) #endif /**************************** Proc FS Support *********************************/ #if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0) int ahc_linux_proc_info(char *, char **, off_t, int, int, int); #else int ahc_linux_proc_info(struct Scsi_Host *, char *, char **, off_t, int, int); #endif /*************************** Domain Validation ********************************/ #define AHC_DV_CMD(cmd) ((cmd)->scsi_done == ahc_linux_dv_complete) #define AHC_DV_SIMQ_FROZEN(ahc) \ ((((ahc)->platform_data->flags & AHC_DV_ACTIVE) != 0) \ && (ahc)->platform_data->qfrozen == 1) /*********************** Transaction Access Wrappers *************************/ static __inline void ahc_cmd_set_transaction_status(Scsi_Cmnd *, uint32_t); static __inline void ahc_set_transaction_status(struct scb *, uint32_t); static __inline void ahc_cmd_set_scsi_status(Scsi_Cmnd *, uint32_t); static __inline void ahc_set_scsi_status(struct scb *, uint32_t); static __inline uint32_t ahc_cmd_get_transaction_status(Scsi_Cmnd *cmd); static __inline uint32_t ahc_get_transaction_status(struct scb *); static __inline uint32_t ahc_cmd_get_scsi_status(Scsi_Cmnd *cmd); static __inline uint32_t ahc_get_scsi_status(struct scb *); static __inline void ahc_set_transaction_tag(struct scb *, int, u_int); static __inline u_long ahc_get_transfer_length(struct scb *); static __inline int ahc_get_transfer_dir(struct scb *); static __inline void ahc_set_residual(struct scb *, u_long); static __inline void ahc_set_sense_residual(struct scb *scb, u_long resid); static __inline u_long ahc_get_residual(struct scb *); static __inline u_long ahc_get_sense_residual(struct scb *); static __inline int ahc_perform_autosense(struct scb *); static __inline uint32_t ahc_get_sense_bufsize(struct ahc_softc *, struct scb *); static __inline void ahc_notify_xfer_settings_change(struct ahc_softc *, struct ahc_devinfo *); static __inline void ahc_platform_scb_free(struct ahc_softc *ahc, struct scb *scb); static __inline void ahc_freeze_scb(struct scb *scb); static __inline void ahc_cmd_set_transaction_status(Scsi_Cmnd *cmd, uint32_t status) { cmd->result &= ~(CAM_STATUS_MASK << 16); cmd->result |= status << 16; } static __inline void ahc_set_transaction_status(struct scb *scb, uint32_t status) { ahc_cmd_set_transaction_status(scb->io_ctx,status); } static __inline void ahc_cmd_set_scsi_status(Scsi_Cmnd *cmd, uint32_t status) { cmd->result &= ~0xFFFF; cmd->result |= status; } static __inline void ahc_set_scsi_status(struct scb *scb, uint32_t status) { ahc_cmd_set_scsi_status(scb->io_ctx, status); } static __inline uint32_t ahc_cmd_get_transaction_status(Scsi_Cmnd *cmd) { return ((cmd->result >> 16) & CAM_STATUS_MASK); } static __inline uint32_t ahc_get_transaction_status(struct scb *scb) { return (ahc_cmd_get_transaction_status(scb->io_ctx)); } static __inline uint32_t ahc_cmd_get_scsi_status(Scsi_Cmnd *cmd) { return (cmd->result & 0xFFFF); } static __inline uint32_t ahc_get_scsi_status(struct scb *scb) { return (ahc_cmd_get_scsi_status(scb->io_ctx)); } static __inline void ahc_set_transaction_tag(struct scb *scb, int enabled, u_int type) { /* * Nothing to do for linux as the incoming transaction * has no concept of tag/non tagged, etc. */ } static __inline u_long ahc_get_transfer_length(struct scb *scb) { return (scb->platform_data->xfer_len); } static __inline int ahc_get_transfer_dir(struct scb *scb) { #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,3,40) return (scb->io_ctx->sc_data_direction); #else if (scb->io_ctx->bufflen == 0) return (CAM_DIR_NONE); switch(scb->io_ctx->cmnd[0]) { case 0x08: /* READ(6) */ case 0x28: /* READ(10) */ case 0xA8: /* READ(12) */ return (CAM_DIR_IN); case 0x0A: /* WRITE(6) */ case 0x2A: /* WRITE(10) */ case 0xAA: /* WRITE(12) */ return (CAM_DIR_OUT); default: return (CAM_DIR_NONE); } #endif } static __inline void ahc_set_residual(struct scb *scb, u_long resid) { #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,3,0) scb->io_ctx->resid = resid; #else scb->platform_data->resid = resid; #endif } static __inline void ahc_set_sense_residual(struct scb *scb, u_long resid) { scb->platform_data->sense_resid = resid; } static __inline u_long ahc_get_residual(struct scb *scb) { #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,3,0) return (scb->io_ctx->resid); #else return (scb->platform_data->resid); #endif } static __inline u_long ahc_get_sense_residual(struct scb *scb) { return (scb->platform_data->sense_resid); } static __inline int ahc_perform_autosense(struct scb *scb) { /* * We always perform autosense in Linux. * On other platforms this is set on a * per-transaction basis. */ return (1); } static __inline uint32_t ahc_get_sense_bufsize(struct ahc_softc *ahc, struct scb *scb) { return (sizeof(struct scsi_sense_data)); } static __inline void ahc_notify_xfer_settings_change(struct ahc_softc *ahc, struct ahc_devinfo *devinfo) { /* Nothing to do here for linux */ } static __inline void ahc_platform_scb_free(struct ahc_softc *ahc, struct scb *scb) { ahc->flags &= ~AHC_RESOURCE_SHORTAGE; } int ahc_platform_alloc(struct ahc_softc *ahc, void *platform_arg); void ahc_platform_free(struct ahc_softc *ahc); void ahc_platform_freeze_devq(struct ahc_softc *ahc, struct scb *scb); static __inline void ahc_freeze_scb(struct scb *scb) { if ((scb->io_ctx->result & (CAM_DEV_QFRZN << 16)) == 0) { scb->io_ctx->result |= CAM_DEV_QFRZN << 16; scb->platform_data->dev->qfrozen++; } } void ahc_platform_set_tags(struct ahc_softc *ahc, struct ahc_devinfo *devinfo, ahc_queue_alg); int ahc_platform_abort_scbs(struct ahc_softc *ahc, int target, char channel, int lun, u_int tag, role_t role, uint32_t status); irqreturn_t ahc_linux_isr(int irq, void *dev_id, struct pt_regs * regs); void ahc_platform_flushwork(struct ahc_softc *ahc); int ahc_softc_comp(struct ahc_softc *, struct ahc_softc *); void ahc_done(struct ahc_softc*, struct scb*); void ahc_send_async(struct ahc_softc *, char channel, u_int target, u_int lun, ac_code, void *); void ahc_print_path(struct ahc_softc *, struct scb *); void ahc_platform_dump_card_state(struct ahc_softc *ahc); #ifdef CONFIG_PCI #define AHC_PCI_CONFIG 1 #else #define AHC_PCI_CONFIG 0 #endif #define bootverbose aic7xxx_verbose extern u_int aic7xxx_verbose; #endif /* _AIC7XXX_LINUX_H_ */