patch-2.4.22 linux-2.4.22/drivers/scsi/aic7xxx/aic79xx_osm.h
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- Lines: 1237
- Date:
2003-08-25 04:44:42.000000000 -0700
- Orig file:
linux-2.4.21/drivers/scsi/aic7xxx/aic79xx_osm.h
- Orig date:
1969-12-31 16:00:00.000000000 -0800
diff -urN linux-2.4.21/drivers/scsi/aic7xxx/aic79xx_osm.h linux-2.4.22/drivers/scsi/aic7xxx/aic79xx_osm.h
@@ -0,0 +1,1236 @@
+/*
+ * Adaptec AIC79xx device driver for Linux.
+ *
+ * Copyright (c) 2000-2001 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/aic79xx_osm.h#135 $
+ *
+ */
+#ifndef _AIC79XX_LINUX_H_
+#define _AIC79XX_LINUX_H_
+
+#include <linux/types.h>
+#include <linux/blk.h>
+#include <linux/blkdev.h>
+#include <linux/delay.h>
+#include <linux/ioport.h>
+#include <linux/pci.h>
+#include <linux/smp_lock.h>
+#include <linux/version.h>
+#include <linux/module.h>
+#include <asm/byteorder.h>
+#include <asm/io.h>
+
+#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 <linux/interrupt.h> /* For tasklet support. */
+#include <linux/config.h>
+#include <linux/slab.h>
+#else
+#include <linux/malloc.h>
+#endif
+
+/* Core SCSI definitions */
+#define AIC_LIB_PREFIX ahd
+#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 "scsi_iu.h"
+#include "aiclib.h"
+
+/*********************************** Debugging ********************************/
+#ifdef CONFIG_AIC79XX_DEBUG_ENABLE
+#ifdef CONFIG_AIC79XX_DEBUG_MASK
+#define AHD_DEBUG 1
+#define AHD_DEBUG_OPTS CONFIG_AIC79XX_DEBUG_MASK
+#else
+/*
+ * Compile in debugging code, but do not enable any printfs.
+ */
+#define AHD_DEBUG 1
+#define AHD_DEBUG_OPTS 0
+#endif
+/* No debugging code. */
+#endif
+
+/********************************** Misc Macros *******************************/
+#define roundup(x, y) ((((x)+((y)-1))/(y))*(y))
+#define powerof2(x) ((((x)-1)&(x))==0)
+
+/************************* Forward Declarations *******************************/
+struct ahd_softc;
+typedef struct pci_dev *ahd_dev_softc_t;
+typedef Scsi_Cmnd *ahd_io_ctx_t;
+
+/******************************* Byte Order ***********************************/
+#define ahd_htobe16(x) cpu_to_be16(x)
+#define ahd_htobe32(x) cpu_to_be32(x)
+#define ahd_htobe64(x) cpu_to_be64(x)
+#define ahd_htole16(x) cpu_to_le16(x)
+#define ahd_htole32(x) cpu_to_le32(x)
+#define ahd_htole64(x) cpu_to_le64(x)
+
+#define ahd_be16toh(x) be16_to_cpu(x)
+#define ahd_be32toh(x) be32_to_cpu(x)
+#define ahd_be64toh(x) be64_to_cpu(x)
+#define ahd_le16toh(x) le16_to_cpu(x)
+#define ahd_le32toh(x) le32_to_cpu(x)
+#define ahd_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 uint32_t aic79xx_allow_memio;
+extern int aic79xx_detect_complete;
+extern Scsi_Host_Template aic79xx_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 ahd_linux_dma_tag
+{
+ bus_size_t alignment;
+ bus_size_t boundary;
+ bus_size_t maxsize;
+};
+typedef struct ahd_linux_dma_tag* bus_dma_tag_t;
+
+struct ahd_linux_dmamap
+{
+ bus_addr_t bus_addr;
+};
+typedef struct ahd_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 ahd_dma_tag_create(struct ahd_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 ahd_dma_tag_destroy(struct ahd_softc *, bus_dma_tag_t /*tag*/);
+
+int ahd_dmamem_alloc(struct ahd_softc *, bus_dma_tag_t /*dmat*/,
+ void** /*vaddr*/, int /*flags*/,
+ bus_dmamap_t* /*mapp*/);
+
+void ahd_dmamem_free(struct ahd_softc *, bus_dma_tag_t /*dmat*/,
+ void* /*vaddr*/, bus_dmamap_t /*map*/);
+
+void ahd_dmamap_destroy(struct ahd_softc *, bus_dma_tag_t /*tag*/,
+ bus_dmamap_t /*map*/);
+
+int ahd_dmamap_load(struct ahd_softc *ahd, 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 ahd_dmamap_unload(struct ahd_softc *, bus_dma_tag_t, bus_dmamap_t);
+
+/*
+ * Operations performed by ahd_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
+ * ahd_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 ahd_dmamap_sync(ahd, dma_tag, dmamap, offset, len, op)
+
+/************************** Timer DataStructures ******************************/
+typedef struct timer_list ahd_timer_t;
+
+/********************************** Includes **********************************/
+#ifdef CONFIG_AIC79XX_REG_PRETTY_PRINT
+#define AIC_DEBUG_REGISTERS 1
+#else
+#define AIC_DEBUG_REGISTERS 0
+#endif
+#include "aic79xx.h"
+
+/***************************** Timer Facilities *******************************/
+#define ahd_timer_init init_timer
+#define ahd_timer_stop del_timer_sync
+typedef void ahd_linux_callback_t (u_long);
+static __inline void ahd_timer_reset(ahd_timer_t *timer, u_int usec,
+ ahd_callback_t *func, void *arg);
+static __inline void ahd_scb_timer_reset(struct scb *scb, u_int usec);
+
+static __inline void
+ahd_timer_reset(ahd_timer_t *timer, u_int usec, ahd_callback_t *func, void *arg)
+{
+ struct ahd_softc *ahd;
+
+ ahd = (struct ahd_softc *)arg;
+ del_timer(timer);
+ timer->data = (u_long)arg;
+ timer->expires = jiffies + (usec * HZ)/1000000;
+ timer->function = (ahd_linux_callback_t*)func;
+ add_timer(timer);
+}
+
+static __inline void
+ahd_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 <linux/spinlock.h>
+#elif LINUX_VERSION_CODE >= KERNEL_VERSION(2,1,93)
+#include <linux/smp.h>
+#endif
+
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0) || defined(SCSI_HAS_HOST_LOCK))
+#define AHD_SCSI_HAS_HOST_LOCK 1
+#else
+#define AHD_SCSI_HAS_HOST_LOCK 0
+#endif
+
+#define AIC79XX_DRIVER_VERSION "1.3.10"
+
+/**************************** 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 ahd_cmd_internal {
+ /* Area owned by the Linux scsi layer. */
+ uint8_t private[offsetof(struct scsi_cmnd, SCp.Status)];
+ union {
+ STAILQ_ENTRY(ahd_cmd) ste;
+ LIST_ENTRY(ahd_cmd) le;
+ TAILQ_ENTRY(ahd_cmd) tqe;
+ } links;
+ uint32_t end;
+};
+
+struct ahd_cmd {
+ union {
+ struct ahd_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(ahd_busyq, ahd_cmd);
+typedef enum {
+ AHD_DEV_UNCONFIGURED = 0x01,
+ AHD_DEV_FREEZE_TIL_EMPTY = 0x02, /* Freeze queue until active == 0 */
+ AHD_DEV_TIMER_ACTIVE = 0x04, /* Our timer is active */
+ AHD_DEV_ON_RUN_LIST = 0x08, /* Queued to be run later */
+ AHD_DEV_Q_BASIC = 0x10, /* Allow basic device queuing */
+ AHD_DEV_Q_TAGGED = 0x20, /* Allow full SCSI2 command queueing */
+ AHD_DEV_PERIODIC_OTAG = 0x40, /* Send OTAG to prevent starvation */
+ AHD_DEV_SLAVE_CONFIGURED = 0x80 /* slave_configure() has been called */
+} ahd_linux_dev_flags;
+
+struct ahd_linux_target;
+struct ahd_linux_device {
+ TAILQ_ENTRY(ahd_linux_device) links;
+ struct ahd_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 AHD_TAG_SUCCESS_INTERVAL 50
+
+ ahd_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 AHD_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 AHD_DEV_PERIODIC_OTAG flag is set
+ * on this device.
+ */
+ u_int commands_since_idle_or_otag;
+#define AHD_OTAG_THRESH 500
+
+ int lun;
+ Scsi_Device *scsi_device;
+ struct ahd_linux_target *target;
+};
+
+typedef enum {
+ AHD_DV_REQUIRED = 0x01,
+ AHD_INQ_VALID = 0x02,
+ AHD_BASIC_DV = 0x04,
+ AHD_ENHANCED_DV = 0x08
+} ahd_linux_targ_flags;
+
+/* DV States */
+typedef enum {
+ AHD_DV_STATE_EXIT = 0,
+ AHD_DV_STATE_INQ_SHORT_ASYNC,
+ AHD_DV_STATE_INQ_ASYNC,
+ AHD_DV_STATE_INQ_ASYNC_VERIFY,
+ AHD_DV_STATE_TUR,
+ AHD_DV_STATE_REBD,
+ AHD_DV_STATE_INQ_VERIFY,
+ AHD_DV_STATE_WEB,
+ AHD_DV_STATE_REB,
+ AHD_DV_STATE_SU,
+ AHD_DV_STATE_BUSY
+} ahd_dv_state;
+
+struct ahd_linux_target {
+ struct ahd_linux_device *devices[AHD_NUM_LUNS];
+ int channel;
+ int target;
+ int refcount;
+ struct ahd_transinfo last_tinfo;
+ struct ahd_softc *ahd;
+ ahd_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;
+ ahd_dv_state dv_state;
+ u_int dv_state_retry;
+ uint8_t *dv_buffer;
+ uint8_t *dv_buffer1;
+
+ /*
+ * Cumulative counter of errors.
+ */
+ u_long errors_detected;
+ u_long cmds_since_error;
+};
+
+/********************* 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 aic79xx_osm.c ahd_linux_size_nseg() for details.
+ */
+extern u_int ahd_linux_nseg;
+#define AHD_NSEG ahd_linux_nseg
+#define AHD_LINUX_MIN_NSEG 64
+#else
+#define AHD_NSEG 128
+#endif
+
+/*
+ * Per-SCB OSM storage.
+ */
+typedef enum {
+ AHD_SCB_UP_EH_SEM = 0x1
+} ahd_linux_scb_flags;
+
+struct scb_platform_data {
+ struct ahd_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 */
+ ahd_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 {
+ AHD_DV_WAIT_SIMQ_EMPTY = 0x01,
+ AHD_DV_WAIT_SIMQ_RELEASE = 0x02,
+ AHD_DV_ACTIVE = 0x04,
+ AHD_DV_SHUTDOWN = 0x08,
+ AHD_RUN_CMPLT_Q_TIMER = 0x10
+} ahd_linux_softc_flags;
+
+TAILQ_HEAD(ahd_completeq, ahd_cmd);
+
+struct ahd_platform_data {
+ /*
+ * Fields accessed from interrupt context.
+ */
+ struct ahd_linux_target *targets[AHD_NUM_TARGETS];
+ TAILQ_HEAD(, ahd_linux_device) device_runq;
+ struct ahd_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 timer_list stats_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 AHD_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;
+ ahd_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 ahd_delay(long);
+static __inline void
+ahd_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 **********************************/
+#if defined(__powerpc__) || defined(__i386__) || defined(__ia64__)
+#define MMAPIO
+#endif
+
+static __inline uint8_t ahd_inb(struct ahd_softc * ahd, long port);
+static __inline uint16_t ahd_inw_atomic(struct ahd_softc * ahd, long port);
+static __inline void ahd_outb(struct ahd_softc * ahd, long port, uint8_t val);
+static __inline void ahd_outw_atomic(struct ahd_softc * ahd,
+ long port, uint16_t val);
+static __inline void ahd_outsb(struct ahd_softc * ahd, long port,
+ uint8_t *, int count);
+static __inline void ahd_insb(struct ahd_softc * ahd, long port,
+ uint8_t *, int count);
+
+static __inline uint8_t
+ahd_inb(struct ahd_softc * ahd, long port)
+{
+ uint8_t x;
+#ifdef MMAPIO
+
+ if (ahd->tags[0] == BUS_SPACE_MEMIO) {
+ x = readb(ahd->bshs[0].maddr + port);
+ } else {
+ x = inb(ahd->bshs[(port) >> 8].ioport + ((port) & 0xFF));
+ }
+#else
+ x = inb(ahd->bshs[(port) >> 8].ioport + ((port) & 0xFF));
+#endif
+ mb();
+ return (x);
+}
+
+static __inline uint16_t
+ahd_inw_atomic(struct ahd_softc * ahd, long port)
+{
+ uint8_t x;
+#ifdef MMAPIO
+
+ if (ahd->tags[0] == BUS_SPACE_MEMIO) {
+ x = readw(ahd->bshs[0].maddr + port);
+ } else {
+ x = inw(ahd->bshs[(port) >> 8].ioport + ((port) & 0xFF));
+ }
+#else
+ x = inw(ahd->bshs[(port) >> 8].ioport + ((port) & 0xFF));
+#endif
+ mb();
+ return (x);
+}
+
+static __inline void
+ahd_outb(struct ahd_softc * ahd, long port, uint8_t val)
+{
+#ifdef MMAPIO
+ if (ahd->tags[0] == BUS_SPACE_MEMIO) {
+ writeb(val, ahd->bshs[0].maddr + port);
+ } else {
+ outb(val, ahd->bshs[(port) >> 8].ioport + (port & 0xFF));
+ }
+#else
+ outb(val, ahd->bshs[(port) >> 8].ioport + (port & 0xFF));
+#endif
+ mb();
+}
+
+static __inline void
+ahd_outw_atomic(struct ahd_softc * ahd, long port, uint16_t val)
+{
+#ifdef MMAPIO
+ if (ahd->tags[0] == BUS_SPACE_MEMIO) {
+ writew(val, ahd->bshs[0].maddr + port);
+ } else {
+ outw(val, ahd->bshs[(port) >> 8].ioport + (port & 0xFF));
+ }
+#else
+ outw(val, ahd->bshs[(port) >> 8].ioport + (port & 0xFF));
+#endif
+ mb();
+}
+
+static __inline void
+ahd_outsb(struct ahd_softc * ahd, 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++)
+ ahd_outb(ahd, port, *array++);
+}
+
+static __inline void
+ahd_insb(struct ahd_softc * ahd, 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++ = ahd_inb(ahd, port);
+}
+
+/**************************** Initialization **********************************/
+int ahd_linux_register_host(struct ahd_softc *,
+ Scsi_Host_Template *);
+
+uint64_t ahd_linux_get_memsize(void);
+
+/*************************** Pretty Printing **********************************/
+struct info_str {
+ char *buffer;
+ int length;
+ off_t offset;
+ int pos;
+};
+
+void ahd_format_transinfo(struct info_str *info,
+ struct ahd_transinfo *tinfo);
+
+/******************************** Locking *************************************/
+/* Lock protecting internal data structures */
+static __inline void ahd_lockinit(struct ahd_softc *);
+static __inline void ahd_lock(struct ahd_softc *, unsigned long *flags);
+static __inline void ahd_unlock(struct ahd_softc *, unsigned long *flags);
+
+/* Lock acquisition and release of the above lock in midlayer entry points. */
+static __inline void ahd_midlayer_entrypoint_lock(struct ahd_softc *,
+ unsigned long *flags);
+static __inline void ahd_midlayer_entrypoint_unlock(struct ahd_softc *,
+ unsigned long *flags);
+
+/* Lock held during command compeletion to the upper layer */
+static __inline void ahd_done_lockinit(struct ahd_softc *);
+static __inline void ahd_done_lock(struct ahd_softc *, unsigned long *flags);
+static __inline void ahd_done_unlock(struct ahd_softc *, unsigned long *flags);
+
+/* Lock held during ahd_list manipulation and ahd softc frees */
+extern spinlock_t ahd_list_spinlock;
+static __inline void ahd_list_lockinit(void);
+static __inline void ahd_list_lock(unsigned long *flags);
+static __inline void ahd_list_unlock(unsigned long *flags);
+
+static __inline void
+ahd_lockinit(struct ahd_softc *ahd)
+{
+ spin_lock_init(&ahd->platform_data->spin_lock);
+}
+
+static __inline void
+ahd_lock(struct ahd_softc *ahd, unsigned long *flags)
+{
+ spin_lock_irqsave(&ahd->platform_data->spin_lock, *flags);
+}
+
+static __inline void
+ahd_unlock(struct ahd_softc *ahd, unsigned long *flags)
+{
+ spin_unlock_irqrestore(&ahd->platform_data->spin_lock, *flags);
+}
+
+static __inline void
+ahd_midlayer_entrypoint_lock(struct ahd_softc *ahd, 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 AHD_SCSI_HAS_HOST_LOCK == 0
+ spin_unlock(&io_request_lock);
+ spin_lock(&ahd->platform_data->spin_lock);
+#endif
+}
+
+static __inline void
+ahd_midlayer_entrypoint_unlock(struct ahd_softc *ahd, unsigned long *flags)
+{
+#if AHD_SCSI_HAS_HOST_LOCK == 0
+ spin_unlock(&ahd->platform_data->spin_lock);
+ spin_lock(&io_request_lock);
+#endif
+}
+
+static __inline void
+ahd_done_lockinit(struct ahd_softc *ahd)
+{
+ /*
+ * 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
+ahd_done_lock(struct ahd_softc *ahd, unsigned long *flags)
+{
+#if AHD_SCSI_HAS_HOST_LOCK == 0
+ spin_lock(&io_request_lock);
+#endif
+}
+
+static __inline void
+ahd_done_unlock(struct ahd_softc *ahd, unsigned long *flags)
+{
+#if AHD_SCSI_HAS_HOST_LOCK == 0
+ spin_unlock(&io_request_lock);
+#endif
+}
+
+static __inline void
+ahd_list_lockinit()
+{
+ spin_lock_init(&ahd_list_spinlock);
+}
+
+static __inline void
+ahd_list_lock(unsigned long *flags)
+{
+ spin_lock_irqsave(&ahd_list_spinlock, *flags);
+}
+
+static __inline void
+ahd_list_unlock(unsigned long *flags)
+{
+ spin_unlock_irqrestore(&ahd_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
+
+/****************************** PCI-X definitions *****************************/
+#define PCIXR_COMMAND 0x96
+#define PCIXR_DEVADDR 0x98
+#define PCIXM_DEVADDR_FNUM 0x0003 /* Function Number */
+#define PCIXM_DEVADDR_DNUM 0x00F8 /* Device Number */
+#define PCIXM_DEVADDR_BNUM 0xFF00 /* Bus Number */
+#define PCIXR_STATUS 0x9A
+#define PCIXM_STATUS_64BIT 0x0001 /* Active 64bit connection to device. */
+#define PCIXM_STATUS_133CAP 0x0002 /* Device is 133MHz capable */
+#define PCIXM_STATUS_SCDISC 0x0004 /* Split Completion Discarded */
+#define PCIXM_STATUS_UNEXPSC 0x0008 /* Unexpected Split Completion */
+#define PCIXM_STATUS_CMPLEXDEV 0x0010 /* Device Complexity (set == bridge) */
+#define PCIXM_STATUS_MAXMRDBC 0x0060 /* Maximum Burst Read Count */
+#define PCIXM_STATUS_MAXSPLITS 0x0380 /* Maximum Split Transactions */
+#define PCIXM_STATUS_MAXCRDS 0x1C00 /* Maximum Cumulative Read Size */
+#define PCIXM_STATUS_RCVDSCEM 0x2000 /* Received a Split Comp w/Error msg */
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0)
+extern struct pci_driver aic79xx_pci_driver;
+#endif
+
+typedef enum
+{
+ AHD_POWER_STATE_D0,
+ AHD_POWER_STATE_D1,
+ AHD_POWER_STATE_D2,
+ AHD_POWER_STATE_D3
+} ahd_power_state;
+
+void ahd_power_state_change(struct ahd_softc *ahd,
+ ahd_power_state new_state);
+
+/******************************* PCI Routines *********************************/
+int ahd_linux_pci_init(void);
+void ahd_linux_pci_exit(void);
+int ahd_pci_map_registers(struct ahd_softc *ahd);
+int ahd_pci_map_int(struct ahd_softc *ahd);
+
+static __inline uint32_t ahd_pci_read_config(ahd_dev_softc_t pci,
+ int reg, int width);
+
+static __inline uint32_t
+ahd_pci_read_config(ahd_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("ahd_pci_read_config: Read size too big");
+ /* NOTREACHED */
+ return (0);
+ }
+}
+
+static __inline void ahd_pci_write_config(ahd_dev_softc_t pci,
+ int reg, uint32_t value,
+ int width);
+
+static __inline void
+ahd_pci_write_config(ahd_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("ahd_pci_write_config: Write size too big");
+ /* NOTREACHED */
+ }
+}
+
+static __inline int ahd_get_pci_function(ahd_dev_softc_t);
+static __inline int
+ahd_get_pci_function(ahd_dev_softc_t pci)
+{
+ return (PCI_FUNC(pci->devfn));
+}
+
+static __inline int ahd_get_pci_slot(ahd_dev_softc_t);
+static __inline int
+ahd_get_pci_slot(ahd_dev_softc_t pci)
+{
+ return (PCI_SLOT(pci->devfn));
+}
+
+static __inline int ahd_get_pci_bus(ahd_dev_softc_t);
+static __inline int
+ahd_get_pci_bus(ahd_dev_softc_t pci)
+{
+ return (pci->bus->number);
+}
+
+static __inline void ahd_flush_device_writes(struct ahd_softc *);
+static __inline void
+ahd_flush_device_writes(struct ahd_softc *ahd)
+{
+ /* XXX Is this sufficient for all architectures??? */
+ ahd_inb(ahd, 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 ahd_pci_set_dma_mask pci_set_dma_mask
+#else
+/*
+ * Always "return" 0 for success.
+ */
+#define ahd_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 ahd_linux_proc_info(char *, char **, off_t, int, int, int);
+#else
+int ahd_linux_proc_info(struct Scsi_Host *, char *, char **,
+ off_t, int, int);
+#endif
+
+/*************************** Domain Validation ********************************/
+#define AHD_DV_CMD(cmd) ((cmd)->scsi_done == ahd_linux_dv_complete)
+#define AHD_DV_SIMQ_FROZEN(ahd) \
+ ((((ahd)->platform_data->flags & AHD_DV_ACTIVE) != 0) \
+ && (ahd)->platform_data->qfrozen == 1)
+
+/*********************** Transaction Access Wrappers **************************/
+static __inline void ahd_cmd_set_transaction_status(Scsi_Cmnd *, uint32_t);
+static __inline void ahd_set_transaction_status(struct scb *, uint32_t);
+static __inline void ahd_cmd_set_scsi_status(Scsi_Cmnd *, uint32_t);
+static __inline void ahd_set_scsi_status(struct scb *, uint32_t);
+static __inline uint32_t ahd_cmd_get_transaction_status(Scsi_Cmnd *cmd);
+static __inline uint32_t ahd_get_transaction_status(struct scb *);
+static __inline uint32_t ahd_cmd_get_scsi_status(Scsi_Cmnd *cmd);
+static __inline uint32_t ahd_get_scsi_status(struct scb *);
+static __inline void ahd_set_transaction_tag(struct scb *, int, u_int);
+static __inline u_long ahd_get_transfer_length(struct scb *);
+static __inline int ahd_get_transfer_dir(struct scb *);
+static __inline void ahd_set_residual(struct scb *, u_long);
+static __inline void ahd_set_sense_residual(struct scb *scb, u_long resid);
+static __inline u_long ahd_get_residual(struct scb *);
+static __inline u_long ahd_get_sense_residual(struct scb *);
+static __inline int ahd_perform_autosense(struct scb *);
+static __inline uint32_t ahd_get_sense_bufsize(struct ahd_softc *,
+ struct scb *);
+static __inline void ahd_notify_xfer_settings_change(struct ahd_softc *,
+ struct ahd_devinfo *);
+static __inline void ahd_platform_scb_free(struct ahd_softc *ahd,
+ struct scb *scb);
+static __inline void ahd_freeze_scb(struct scb *scb);
+
+static __inline
+void ahd_cmd_set_transaction_status(Scsi_Cmnd *cmd, uint32_t status)
+{
+ cmd->result &= ~(CAM_STATUS_MASK << 16);
+ cmd->result |= status << 16;
+}
+
+static __inline
+void ahd_set_transaction_status(struct scb *scb, uint32_t status)
+{
+ ahd_cmd_set_transaction_status(scb->io_ctx,status);
+}
+
+static __inline
+void ahd_cmd_set_scsi_status(Scsi_Cmnd *cmd, uint32_t status)
+{
+ cmd->result &= ~0xFFFF;
+ cmd->result |= status;
+}
+
+static __inline
+void ahd_set_scsi_status(struct scb *scb, uint32_t status)
+{
+ ahd_cmd_set_scsi_status(scb->io_ctx, status);
+}
+
+static __inline
+uint32_t ahd_cmd_get_transaction_status(Scsi_Cmnd *cmd)
+{
+ return ((cmd->result >> 16) & CAM_STATUS_MASK);
+}
+
+static __inline
+uint32_t ahd_get_transaction_status(struct scb *scb)
+{
+ return (ahd_cmd_get_transaction_status(scb->io_ctx));
+}
+
+static __inline
+uint32_t ahd_cmd_get_scsi_status(Scsi_Cmnd *cmd)
+{
+ return (cmd->result & 0xFFFF);
+}
+
+static __inline
+uint32_t ahd_get_scsi_status(struct scb *scb)
+{
+ return (ahd_cmd_get_scsi_status(scb->io_ctx));
+}
+
+static __inline
+void ahd_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 ahd_get_transfer_length(struct scb *scb)
+{
+ return (scb->platform_data->xfer_len);
+}
+
+static __inline
+int ahd_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 ahd_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 ahd_set_sense_residual(struct scb *scb, u_long resid)
+{
+ scb->platform_data->sense_resid = resid;
+}
+
+static __inline
+u_long ahd_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 ahd_get_sense_residual(struct scb *scb)
+{
+ return (scb->platform_data->sense_resid);
+}
+
+static __inline
+int ahd_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
+ahd_get_sense_bufsize(struct ahd_softc *ahd, struct scb *scb)
+{
+ return (sizeof(struct scsi_sense_data));
+}
+
+static __inline void
+ahd_notify_xfer_settings_change(struct ahd_softc *ahd,
+ struct ahd_devinfo *devinfo)
+{
+ /* Nothing to do here for linux */
+}
+
+static __inline void
+ahd_platform_scb_free(struct ahd_softc *ahd, struct scb *scb)
+{
+ ahd->flags &= ~AHD_RESOURCE_SHORTAGE;
+}
+
+int ahd_platform_alloc(struct ahd_softc *ahd, void *platform_arg);
+void ahd_platform_free(struct ahd_softc *ahd);
+void ahd_platform_init(struct ahd_softc *ahd);
+void ahd_platform_freeze_devq(struct ahd_softc *ahd, struct scb *scb);
+void ahd_freeze_simq(struct ahd_softc *ahd);
+void ahd_release_simq(struct ahd_softc *ahd);
+
+static __inline void
+ahd_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 ahd_platform_set_tags(struct ahd_softc *ahd,
+ struct ahd_devinfo *devinfo, ahd_queue_alg);
+int ahd_platform_abort_scbs(struct ahd_softc *ahd, int target,
+ char channel, int lun, u_int tag,
+ role_t role, uint32_t status);
+irqreturn_t
+ ahd_linux_isr(int irq, void *dev_id, struct pt_regs * regs);
+void ahd_platform_flushwork(struct ahd_softc *ahd);
+int ahd_softc_comp(struct ahd_softc *, struct ahd_softc *);
+void ahd_done(struct ahd_softc*, struct scb*);
+void ahd_send_async(struct ahd_softc *, char channel,
+ u_int target, u_int lun, ac_code, void *);
+void ahd_print_path(struct ahd_softc *, struct scb *);
+void ahd_platform_dump_card_state(struct ahd_softc *ahd);
+
+#ifdef CONFIG_PCI
+#define AHD_PCI_CONFIG 1
+#else
+#define AHD_PCI_CONFIG 0
+#endif
+#define bootverbose aic79xx_verbose
+extern uint32_t aic79xx_verbose;
+#endif /* _AIC79XX_LINUX_H_ */
FUNET's LINUX-ADM group, linux-adm@nic.funet.fi
TCL-scripts by Sam Shen (who was at: slshen@lbl.gov)