529 lines
16 KiB
C
529 lines
16 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
/* -*- mode: c; c-basic-offset: 8 -*- */
|
|
|
|
/* Driver for 53c700 and 53c700-66 chips from NCR and Symbios
|
|
*
|
|
* Copyright (C) 2001 by James.Bottomley@HansenPartnership.com
|
|
*/
|
|
|
|
#ifndef _53C700_H
|
|
#define _53C700_H
|
|
|
|
#include <linux/interrupt.h>
|
|
#include <asm/io.h>
|
|
|
|
#include <scsi/scsi_device.h>
|
|
#include <scsi/scsi_cmnd.h>
|
|
|
|
/* Turn on for general debugging---too verbose for normal use */
|
|
#undef NCR_700_DEBUG
|
|
/* Debug the tag queues, checking hash queue allocation and deallocation
|
|
* and search for duplicate tags */
|
|
#undef NCR_700_TAG_DEBUG
|
|
|
|
#ifdef NCR_700_DEBUG
|
|
#define DEBUG(x) printk x
|
|
#define DDEBUG(prefix, sdev, fmt, a...) \
|
|
sdev_printk(prefix, sdev, fmt, ##a)
|
|
#define CDEBUG(prefix, scmd, fmt, a...) \
|
|
scmd_printk(prefix, scmd, fmt, ##a)
|
|
#else
|
|
#define DEBUG(x) do {} while (0)
|
|
#define DDEBUG(prefix, scmd, fmt, a...) do {} while (0)
|
|
#define CDEBUG(prefix, scmd, fmt, a...) do {} while (0)
|
|
#endif
|
|
|
|
/* The number of available command slots */
|
|
#define NCR_700_COMMAND_SLOTS_PER_HOST 64
|
|
/* The maximum number of Scatter Gathers we allow */
|
|
#define NCR_700_SG_SEGMENTS 32
|
|
/* The maximum number of luns (make this of the form 2^n) */
|
|
#define NCR_700_MAX_LUNS 32
|
|
#define NCR_700_LUN_MASK (NCR_700_MAX_LUNS - 1)
|
|
/* Maximum number of tags the driver ever allows per device */
|
|
#define NCR_700_MAX_TAGS 16
|
|
/* Tag depth the driver starts out with (can be altered in sysfs) */
|
|
#define NCR_700_DEFAULT_TAGS 4
|
|
/* This is the default number of commands per LUN in the untagged case.
|
|
* two is a good value because it means we can have one command active and
|
|
* one command fully prepared and waiting
|
|
*/
|
|
#define NCR_700_CMD_PER_LUN 2
|
|
/* magic byte identifying an internally generated REQUEST_SENSE command */
|
|
#define NCR_700_INTERNAL_SENSE_MAGIC 0x42
|
|
|
|
struct NCR_700_Host_Parameters;
|
|
|
|
/* These are the externally used routines */
|
|
struct Scsi_Host *NCR_700_detect(struct scsi_host_template *,
|
|
struct NCR_700_Host_Parameters *, struct device *);
|
|
int NCR_700_release(struct Scsi_Host *host);
|
|
irqreturn_t NCR_700_intr(int, void *);
|
|
|
|
|
|
enum NCR_700_Host_State {
|
|
NCR_700_HOST_BUSY,
|
|
NCR_700_HOST_FREE,
|
|
};
|
|
|
|
struct NCR_700_SG_List {
|
|
/* The following is a script fragment to move the buffer onto the
|
|
* bus and then link the next fragment or return */
|
|
#define SCRIPT_MOVE_DATA_IN 0x09000000
|
|
#define SCRIPT_MOVE_DATA_OUT 0x08000000
|
|
__u32 ins;
|
|
__u32 pAddr;
|
|
#define SCRIPT_NOP 0x80000000
|
|
#define SCRIPT_RETURN 0x90080000
|
|
};
|
|
|
|
struct NCR_700_Device_Parameters {
|
|
/* space for creating a request sense command. Really, except
|
|
* for the annoying SCSI-2 requirement for LUN information in
|
|
* cmnd[1], this could be in static storage */
|
|
unsigned char cmnd[MAX_COMMAND_SIZE];
|
|
__u8 depth;
|
|
struct scsi_cmnd *current_cmnd; /* currently active command */
|
|
};
|
|
|
|
|
|
/* The SYNC negotiation sequence looks like:
|
|
*
|
|
* If DEV_NEGOTIATED_SYNC not set, tack and SDTR message on to the
|
|
* initial identify for the device and set DEV_BEGIN_SYNC_NEGOTATION
|
|
* If we get an SDTR reply, work out the SXFER parameters, squirrel
|
|
* them away here, clear DEV_BEGIN_SYNC_NEGOTIATION and set
|
|
* DEV_NEGOTIATED_SYNC. If we get a REJECT msg, squirrel
|
|
*
|
|
*
|
|
* 0:7 SXFER_REG negotiated value for this device
|
|
* 8:15 Current queue depth
|
|
* 16 negotiated SYNC flag
|
|
* 17 begin SYNC negotiation flag
|
|
* 18 device supports tag queueing */
|
|
#define NCR_700_DEV_NEGOTIATED_SYNC (1<<16)
|
|
#define NCR_700_DEV_BEGIN_SYNC_NEGOTIATION (1<<17)
|
|
#define NCR_700_DEV_PRINT_SYNC_NEGOTIATION (1<<19)
|
|
|
|
static inline char *NCR_700_get_sense_cmnd(struct scsi_device *SDp)
|
|
{
|
|
struct NCR_700_Device_Parameters *hostdata = SDp->hostdata;
|
|
|
|
return hostdata->cmnd;
|
|
}
|
|
|
|
static inline void
|
|
NCR_700_set_depth(struct scsi_device *SDp, __u8 depth)
|
|
{
|
|
struct NCR_700_Device_Parameters *hostdata = SDp->hostdata;
|
|
|
|
hostdata->depth = depth;
|
|
}
|
|
static inline __u8
|
|
NCR_700_get_depth(struct scsi_device *SDp)
|
|
{
|
|
struct NCR_700_Device_Parameters *hostdata = SDp->hostdata;
|
|
|
|
return hostdata->depth;
|
|
}
|
|
static inline int
|
|
NCR_700_is_flag_set(struct scsi_device *SDp, __u32 flag)
|
|
{
|
|
return (spi_flags(SDp->sdev_target) & flag) == flag;
|
|
}
|
|
static inline int
|
|
NCR_700_is_flag_clear(struct scsi_device *SDp, __u32 flag)
|
|
{
|
|
return (spi_flags(SDp->sdev_target) & flag) == 0;
|
|
}
|
|
static inline void
|
|
NCR_700_set_flag(struct scsi_device *SDp, __u32 flag)
|
|
{
|
|
spi_flags(SDp->sdev_target) |= flag;
|
|
}
|
|
static inline void
|
|
NCR_700_clear_flag(struct scsi_device *SDp, __u32 flag)
|
|
{
|
|
spi_flags(SDp->sdev_target) &= ~flag;
|
|
}
|
|
|
|
enum NCR_700_tag_neg_state {
|
|
NCR_700_START_TAG_NEGOTIATION = 0,
|
|
NCR_700_DURING_TAG_NEGOTIATION = 1,
|
|
NCR_700_FINISHED_TAG_NEGOTIATION = 2,
|
|
};
|
|
|
|
static inline enum NCR_700_tag_neg_state
|
|
NCR_700_get_tag_neg_state(struct scsi_device *SDp)
|
|
{
|
|
return (enum NCR_700_tag_neg_state)((spi_flags(SDp->sdev_target)>>20) & 0x3);
|
|
}
|
|
|
|
static inline void
|
|
NCR_700_set_tag_neg_state(struct scsi_device *SDp,
|
|
enum NCR_700_tag_neg_state state)
|
|
{
|
|
/* clear the slot */
|
|
spi_flags(SDp->sdev_target) &= ~(0x3 << 20);
|
|
spi_flags(SDp->sdev_target) |= ((__u32)state) << 20;
|
|
}
|
|
|
|
struct NCR_700_command_slot {
|
|
struct NCR_700_SG_List SG[NCR_700_SG_SEGMENTS+1];
|
|
struct NCR_700_SG_List *pSG;
|
|
#define NCR_700_SLOT_MASK 0xFC
|
|
#define NCR_700_SLOT_MAGIC 0xb8
|
|
#define NCR_700_SLOT_FREE (0|NCR_700_SLOT_MAGIC) /* slot may be used */
|
|
#define NCR_700_SLOT_BUSY (1|NCR_700_SLOT_MAGIC) /* slot has command active on HA */
|
|
#define NCR_700_SLOT_QUEUED (2|NCR_700_SLOT_MAGIC) /* slot has command to be made active on HA */
|
|
__u8 state;
|
|
#define NCR_700_FLAG_AUTOSENSE 0x01
|
|
__u8 flags;
|
|
__u8 pad1[2]; /* Needed for m68k where min alignment is 2 bytes */
|
|
int tag;
|
|
__u32 resume_offset;
|
|
struct scsi_cmnd *cmnd;
|
|
/* The pci_mapped address of the actual command in cmnd */
|
|
dma_addr_t pCmd;
|
|
__u32 temp;
|
|
/* if this command is a pci_single mapping, holds the dma address
|
|
* for later unmapping in the done routine */
|
|
dma_addr_t dma_handle;
|
|
/* historical remnant, now used to link free commands */
|
|
struct NCR_700_command_slot *ITL_forw;
|
|
};
|
|
|
|
struct NCR_700_Host_Parameters {
|
|
/* These must be filled in by the calling driver */
|
|
int clock; /* board clock speed in MHz */
|
|
void __iomem *base; /* the base for the port (copied to host) */
|
|
struct device *dev;
|
|
__u32 dmode_extra; /* adjustable bus settings */
|
|
__u32 dcntl_extra; /* adjustable bus settings */
|
|
__u32 ctest7_extra; /* adjustable bus settings */
|
|
__u32 differential:1; /* if we are differential */
|
|
#ifdef CONFIG_53C700_LE_ON_BE
|
|
/* This option is for HP only. Set it if your chip is wired for
|
|
* little endian on this platform (which is big endian) */
|
|
__u32 force_le_on_be:1;
|
|
#endif
|
|
__u32 chip710:1; /* set if really a 710 not 700 */
|
|
__u32 burst_length:4; /* set to 0 to disable 710 bursting */
|
|
|
|
/* NOTHING BELOW HERE NEEDS ALTERING */
|
|
__u32 fast:1; /* if we can alter the SCSI bus clock
|
|
speed (so can negiotiate sync) */
|
|
int sync_clock; /* The speed of the SYNC core */
|
|
|
|
__u32 *script; /* pointer to script location */
|
|
__u32 pScript; /* physical mem addr of script */
|
|
|
|
enum NCR_700_Host_State state; /* protected by state lock */
|
|
struct scsi_cmnd *cmd;
|
|
/* Note: pScript contains the single consistent block of
|
|
* memory. All the msgin, msgout and status are allocated in
|
|
* this memory too (at separate cache lines). TOTAL_MEM_SIZE
|
|
* represents the total size of this area */
|
|
#define MSG_ARRAY_SIZE 8
|
|
#define MSGOUT_OFFSET (L1_CACHE_ALIGN(sizeof(SCRIPT)))
|
|
__u8 *msgout;
|
|
#define MSGIN_OFFSET (MSGOUT_OFFSET + L1_CACHE_ALIGN(MSG_ARRAY_SIZE))
|
|
__u8 *msgin;
|
|
#define STATUS_OFFSET (MSGIN_OFFSET + L1_CACHE_ALIGN(MSG_ARRAY_SIZE))
|
|
__u8 *status;
|
|
#define SLOTS_OFFSET (STATUS_OFFSET + L1_CACHE_ALIGN(MSG_ARRAY_SIZE))
|
|
struct NCR_700_command_slot *slots;
|
|
#define TOTAL_MEM_SIZE (SLOTS_OFFSET + L1_CACHE_ALIGN(sizeof(struct NCR_700_command_slot) * NCR_700_COMMAND_SLOTS_PER_HOST))
|
|
int saved_slot_position;
|
|
int command_slot_count; /* protected by state lock */
|
|
__u8 tag_negotiated;
|
|
__u8 rev;
|
|
__u8 reselection_id;
|
|
__u8 min_period;
|
|
|
|
/* Free list, singly linked by ITL_forw elements */
|
|
struct NCR_700_command_slot *free_list;
|
|
/* Completion for waited for ops, like reset, abort or
|
|
* device reset.
|
|
*
|
|
* NOTE: relies on single threading in the error handler to
|
|
* have only one outstanding at once */
|
|
struct completion *eh_complete;
|
|
};
|
|
|
|
/*
|
|
* 53C700 Register Interface - the offset from the Selected base
|
|
* I/O address */
|
|
#ifdef CONFIG_53C700_LE_ON_BE
|
|
#define bE (hostdata->force_le_on_be ? 0 : 3)
|
|
#define bSWAP (hostdata->force_le_on_be)
|
|
#define bEBus (!hostdata->force_le_on_be)
|
|
#elif defined(__BIG_ENDIAN)
|
|
#define bE 3
|
|
#define bSWAP 0
|
|
#elif defined(__LITTLE_ENDIAN)
|
|
#define bE 0
|
|
#define bSWAP 0
|
|
#else
|
|
#error "__BIG_ENDIAN or __LITTLE_ENDIAN must be defined, did you include byteorder.h?"
|
|
#endif
|
|
#ifndef bEBus
|
|
#ifdef CONFIG_53C700_BE_BUS
|
|
#define bEBus 1
|
|
#else
|
|
#define bEBus 0
|
|
#endif
|
|
#endif
|
|
#define bS_to_cpu(x) (bSWAP ? le32_to_cpu(x) : (x))
|
|
#define bS_to_host(x) (bSWAP ? cpu_to_le32(x) : (x))
|
|
|
|
/* NOTE: These registers are in the LE register space only, the required byte
|
|
* swapping is done by the NCR_700_{read|write}[b] functions */
|
|
#define SCNTL0_REG 0x00
|
|
#define FULL_ARBITRATION 0xc0
|
|
#define PARITY 0x08
|
|
#define ENABLE_PARITY 0x04
|
|
#define AUTO_ATN 0x02
|
|
#define SCNTL1_REG 0x01
|
|
#define SLOW_BUS 0x80
|
|
#define ENABLE_SELECT 0x20
|
|
#define ASSERT_RST 0x08
|
|
#define ASSERT_EVEN_PARITY 0x04
|
|
#define SDID_REG 0x02
|
|
#define SIEN_REG 0x03
|
|
#define PHASE_MM_INT 0x80
|
|
#define FUNC_COMP_INT 0x40
|
|
#define SEL_TIMEOUT_INT 0x20
|
|
#define SELECT_INT 0x10
|
|
#define GROSS_ERR_INT 0x08
|
|
#define UX_DISC_INT 0x04
|
|
#define RST_INT 0x02
|
|
#define PAR_ERR_INT 0x01
|
|
#define SCID_REG 0x04
|
|
#define SXFER_REG 0x05
|
|
#define ASYNC_OPERATION 0x00
|
|
#define SODL_REG 0x06
|
|
#define SOCL_REG 0x07
|
|
#define SFBR_REG 0x08
|
|
#define SIDL_REG 0x09
|
|
#define SBDL_REG 0x0A
|
|
#define SBCL_REG 0x0B
|
|
/* read bits */
|
|
#define SBCL_IO 0x01
|
|
/*write bits */
|
|
#define SYNC_DIV_AS_ASYNC 0x00
|
|
#define SYNC_DIV_1_0 0x01
|
|
#define SYNC_DIV_1_5 0x02
|
|
#define SYNC_DIV_2_0 0x03
|
|
#define DSTAT_REG 0x0C
|
|
#define ILGL_INST_DETECTED 0x01
|
|
#define WATCH_DOG_INTERRUPT 0x02
|
|
#define SCRIPT_INT_RECEIVED 0x04
|
|
#define ABORTED 0x10
|
|
#define SSTAT0_REG 0x0D
|
|
#define PARITY_ERROR 0x01
|
|
#define SCSI_RESET_DETECTED 0x02
|
|
#define UNEXPECTED_DISCONNECT 0x04
|
|
#define SCSI_GROSS_ERROR 0x08
|
|
#define SELECTED 0x10
|
|
#define SELECTION_TIMEOUT 0x20
|
|
#define FUNCTION_COMPLETE 0x40
|
|
#define PHASE_MISMATCH 0x80
|
|
#define SSTAT1_REG 0x0E
|
|
#define SIDL_REG_FULL 0x80
|
|
#define SODR_REG_FULL 0x40
|
|
#define SODL_REG_FULL 0x20
|
|
#define SSTAT2_REG 0x0F
|
|
#define CTEST0_REG 0x14
|
|
#define BTB_TIMER_DISABLE 0x40
|
|
#define CTEST1_REG 0x15
|
|
#define CTEST2_REG 0x16
|
|
#define CTEST3_REG 0x17
|
|
#define CTEST4_REG 0x18
|
|
#define DISABLE_FIFO 0x00
|
|
#define SLBE 0x10
|
|
#define SFWR 0x08
|
|
#define BYTE_LANE0 0x04
|
|
#define BYTE_LANE1 0x05
|
|
#define BYTE_LANE2 0x06
|
|
#define BYTE_LANE3 0x07
|
|
#define SCSI_ZMODE 0x20
|
|
#define ZMODE 0x40
|
|
#define CTEST5_REG 0x19
|
|
#define MASTER_CONTROL 0x10
|
|
#define DMA_DIRECTION 0x08
|
|
#define CTEST7_REG 0x1B
|
|
#define BURST_DISABLE 0x80 /* 710 only */
|
|
#define SEL_TIMEOUT_DISABLE 0x10 /* 710 only */
|
|
#define DFP 0x08
|
|
#define EVP 0x04
|
|
#define CTEST7_TT1 0x02
|
|
#define DIFF 0x01
|
|
#define CTEST6_REG 0x1A
|
|
#define TEMP_REG 0x1C
|
|
#define DFIFO_REG 0x20
|
|
#define FLUSH_DMA_FIFO 0x80
|
|
#define CLR_FIFO 0x40
|
|
#define ISTAT_REG 0x21
|
|
#define ABORT_OPERATION 0x80
|
|
#define SOFTWARE_RESET_710 0x40
|
|
#define DMA_INT_PENDING 0x01
|
|
#define SCSI_INT_PENDING 0x02
|
|
#define CONNECTED 0x08
|
|
#define CTEST8_REG 0x22
|
|
#define LAST_DIS_ENBL 0x01
|
|
#define SHORTEN_FILTERING 0x04
|
|
#define ENABLE_ACTIVE_NEGATION 0x10
|
|
#define GENERATE_RECEIVE_PARITY 0x20
|
|
#define CLR_FIFO_710 0x04
|
|
#define FLUSH_DMA_FIFO_710 0x08
|
|
#define CTEST9_REG 0x23
|
|
#define DBC_REG 0x24
|
|
#define DCMD_REG 0x27
|
|
#define DNAD_REG 0x28
|
|
#define DIEN_REG 0x39
|
|
#define BUS_FAULT 0x20
|
|
#define ABORT_INT 0x10
|
|
#define INT_INST_INT 0x04
|
|
#define WD_INT 0x02
|
|
#define ILGL_INST_INT 0x01
|
|
#define DCNTL_REG 0x3B
|
|
#define SOFTWARE_RESET 0x01
|
|
#define COMPAT_700_MODE 0x01
|
|
#define SCRPTS_16BITS 0x20
|
|
#define EA_710 0x20
|
|
#define ASYNC_DIV_2_0 0x00
|
|
#define ASYNC_DIV_1_5 0x40
|
|
#define ASYNC_DIV_1_0 0x80
|
|
#define ASYNC_DIV_3_0 0xc0
|
|
#define DMODE_710_REG 0x38
|
|
#define DMODE_700_REG 0x34
|
|
#define BURST_LENGTH_1 0x00
|
|
#define BURST_LENGTH_2 0x40
|
|
#define BURST_LENGTH_4 0x80
|
|
#define BURST_LENGTH_8 0xC0
|
|
#define DMODE_FC1 0x10
|
|
#define DMODE_FC2 0x20
|
|
#define BW16 32
|
|
#define MODE_286 16
|
|
#define IO_XFER 8
|
|
#define FIXED_ADDR 4
|
|
|
|
#define DSP_REG 0x2C
|
|
#define DSPS_REG 0x30
|
|
|
|
/* Parameters to begin SDTR negotiations. Empirically, I find that
|
|
* the 53c700-66 cannot handle an offset >8, so don't change this */
|
|
#define NCR_700_MAX_OFFSET 8
|
|
/* Was hoping the max offset would be greater for the 710, but
|
|
* empirically it seems to be 8 also */
|
|
#define NCR_710_MAX_OFFSET 8
|
|
#define NCR_700_MIN_XFERP 1
|
|
#define NCR_710_MIN_XFERP 0
|
|
#define NCR_700_MIN_PERIOD 25 /* for SDTR message, 100ns */
|
|
|
|
#define script_patch_32(dev, script, symbol, value) \
|
|
{ \
|
|
int i; \
|
|
dma_addr_t da = value; \
|
|
for(i=0; i< (sizeof(A_##symbol##_used) / sizeof(__u32)); i++) { \
|
|
__u32 val = bS_to_cpu((script)[A_##symbol##_used[i]]) + da; \
|
|
(script)[A_##symbol##_used[i]] = bS_to_host(val); \
|
|
dma_cache_sync((dev), &(script)[A_##symbol##_used[i]], 4, DMA_TO_DEVICE); \
|
|
DEBUG((" script, patching %s at %d to %pad\n", \
|
|
#symbol, A_##symbol##_used[i], &da)); \
|
|
} \
|
|
}
|
|
|
|
#define script_patch_32_abs(dev, script, symbol, value) \
|
|
{ \
|
|
int i; \
|
|
dma_addr_t da = value; \
|
|
for(i=0; i< (sizeof(A_##symbol##_used) / sizeof(__u32)); i++) { \
|
|
(script)[A_##symbol##_used[i]] = bS_to_host(da); \
|
|
dma_cache_sync((dev), &(script)[A_##symbol##_used[i]], 4, DMA_TO_DEVICE); \
|
|
DEBUG((" script, patching %s at %d to %pad\n", \
|
|
#symbol, A_##symbol##_used[i], &da)); \
|
|
} \
|
|
}
|
|
|
|
/* Used for patching the SCSI ID in the SELECT instruction */
|
|
#define script_patch_ID(dev, script, symbol, value) \
|
|
{ \
|
|
int i; \
|
|
for(i=0; i< (sizeof(A_##symbol##_used) / sizeof(__u32)); i++) { \
|
|
__u32 val = bS_to_cpu((script)[A_##symbol##_used[i]]); \
|
|
val &= 0xff00ffff; \
|
|
val |= ((value) & 0xff) << 16; \
|
|
(script)[A_##symbol##_used[i]] = bS_to_host(val); \
|
|
dma_cache_sync((dev), &(script)[A_##symbol##_used[i]], 4, DMA_TO_DEVICE); \
|
|
DEBUG((" script, patching ID field %s at %d to 0x%x\n", \
|
|
#symbol, A_##symbol##_used[i], val)); \
|
|
} \
|
|
}
|
|
|
|
#define script_patch_16(dev, script, symbol, value) \
|
|
{ \
|
|
int i; \
|
|
for(i=0; i< (sizeof(A_##symbol##_used) / sizeof(__u32)); i++) { \
|
|
__u32 val = bS_to_cpu((script)[A_##symbol##_used[i]]); \
|
|
val &= 0xffff0000; \
|
|
val |= ((value) & 0xffff); \
|
|
(script)[A_##symbol##_used[i]] = bS_to_host(val); \
|
|
dma_cache_sync((dev), &(script)[A_##symbol##_used[i]], 4, DMA_TO_DEVICE); \
|
|
DEBUG((" script, patching short field %s at %d to 0x%x\n", \
|
|
#symbol, A_##symbol##_used[i], val)); \
|
|
} \
|
|
}
|
|
|
|
|
|
static inline __u8
|
|
NCR_700_readb(struct Scsi_Host *host, __u32 reg)
|
|
{
|
|
const struct NCR_700_Host_Parameters *hostdata
|
|
= (struct NCR_700_Host_Parameters *)host->hostdata[0];
|
|
|
|
return ioread8(hostdata->base + (reg^bE));
|
|
}
|
|
|
|
static inline __u32
|
|
NCR_700_readl(struct Scsi_Host *host, __u32 reg)
|
|
{
|
|
const struct NCR_700_Host_Parameters *hostdata
|
|
= (struct NCR_700_Host_Parameters *)host->hostdata[0];
|
|
__u32 value = bEBus ? ioread32be(hostdata->base + reg) :
|
|
ioread32(hostdata->base + reg);
|
|
#if 1
|
|
/* sanity check the register */
|
|
BUG_ON((reg & 0x3) != 0);
|
|
#endif
|
|
|
|
return value;
|
|
}
|
|
|
|
static inline void
|
|
NCR_700_writeb(__u8 value, struct Scsi_Host *host, __u32 reg)
|
|
{
|
|
const struct NCR_700_Host_Parameters *hostdata
|
|
= (struct NCR_700_Host_Parameters *)host->hostdata[0];
|
|
|
|
iowrite8(value, hostdata->base + (reg^bE));
|
|
}
|
|
|
|
static inline void
|
|
NCR_700_writel(__u32 value, struct Scsi_Host *host, __u32 reg)
|
|
{
|
|
const struct NCR_700_Host_Parameters *hostdata
|
|
= (struct NCR_700_Host_Parameters *)host->hostdata[0];
|
|
|
|
#if 1
|
|
/* sanity check the register */
|
|
BUG_ON((reg & 0x3) != 0);
|
|
#endif
|
|
|
|
bEBus ? iowrite32be(value, hostdata->base + reg):
|
|
iowrite32(value, hostdata->base + reg);
|
|
}
|
|
|
|
#endif
|