diff options
Diffstat (limited to 'drivers/scsi/NCR5380.h')
| -rw-r--r-- | drivers/scsi/NCR5380.h | 87 |
1 files changed, 38 insertions, 49 deletions
diff --git a/drivers/scsi/NCR5380.h b/drivers/scsi/NCR5380.h index 162112dd1..a79288682 100644 --- a/drivers/scsi/NCR5380.h +++ b/drivers/scsi/NCR5380.h @@ -22,8 +22,13 @@ #ifndef NCR5380_H #define NCR5380_H +#include <linux/delay.h> #include <linux/interrupt.h> +#include <linux/list.h> +#include <linux/workqueue.h> +#include <scsi/scsi_dbg.h> #include <scsi/scsi_eh.h> +#include <scsi/scsi_transport_spi.h> #define NDEBUG_ARBITRATION 0x1 #define NDEBUG_AUTOSENSE 0x2 @@ -158,8 +163,7 @@ /* Write any value to this register to start an ini mode DMA receive */ #define START_DMA_INITIATOR_RECEIVE_REG 7 /* wo */ -#define C400_CONTROL_STATUS_REG NCR53C400_register_offset-8 /* rw */ - +/* NCR 53C400(A) Control Status Register bits: */ #define CSR_RESET 0x80 /* wo Resets 53c400 */ #define CSR_53C80_REG 0x80 /* ro 5380 registers busy */ #define CSR_TRANS_DIR 0x40 /* rw Data transfer direction */ @@ -176,16 +180,6 @@ #define CSR_BASE CSR_53C80_INTR #endif -/* Number of 128-byte blocks to be transferred */ -#define C400_BLOCK_COUNTER_REG NCR53C400_register_offset-7 /* rw */ - -/* Resume transfer after disconnect */ -#define C400_RESUME_TRANSFER_REG NCR53C400_register_offset-6 /* wo */ - -/* Access to host buffer stack */ -#define C400_HOST_BUFFER NCR53C400_register_offset-4 /* rw */ - - /* Note : PHASE_* macros are based on the values of the STATUS register */ #define PHASE_MASK (SR_MSG | SR_CD | SR_IO) @@ -205,16 +199,6 @@ #define PHASE_SR_TO_TCR(phase) ((phase) >> 2) -/* - * The internal should_disconnect() function returns these based on the - * expected length of a disconnect if a device supports disconnect/ - * reconnect. - */ - -#define DISCONNECT_NONE 0 -#define DISCONNECT_TIME_TO_DATA 1 -#define DISCONNECT_LONG 2 - /* * "Special" value for the (unsigned char) command tag, to indicate * I_T_L nexus instead of I_T_L_Q. @@ -236,15 +220,11 @@ #define NO_IRQ 0 #endif -#define FLAG_HAS_LAST_BYTE_SENT 1 /* NCR53c81 or better */ -#define FLAG_CHECK_LAST_BYTE_SENT 2 /* Only test once */ -#define FLAG_NCR53C400 4 /* NCR53c400 */ +#define FLAG_NO_DMA_FIXUP 1 /* No DMA errata workarounds */ #define FLAG_NO_PSEUDO_DMA 8 /* Inhibit DMA */ -#define FLAG_DTC3181E 16 /* DTC3181E */ #define FLAG_LATE_DMA_SETUP 32 /* Setup NCR before DMA H/W */ #define FLAG_TAGGED_QUEUING 64 /* as X3T9.2 spelled it */ - -#ifndef ASM +#define FLAG_TOSHIBA_DELAY 128 /* Allow for borken CD-ROMs */ #ifdef SUPPORT_TAGS struct tag_alloc { @@ -258,33 +238,24 @@ struct NCR5380_hostdata { NCR5380_implementation_fields; /* implementation specific */ struct Scsi_Host *host; /* Host backpointer */ unsigned char id_mask, id_higher_mask; /* 1 << id, all bits greater */ - unsigned char targets_present; /* targets we have connected - to, so we can call a select - failure a retryable condition */ - volatile unsigned char busy[8]; /* index = target, bit = lun */ + unsigned char busy[8]; /* index = target, bit = lun */ #if defined(REAL_DMA) || defined(REAL_DMA_POLL) - volatile int dma_len; /* requested length of DMA */ + int dma_len; /* requested length of DMA */ #endif - volatile unsigned char last_message; /* last message OUT */ - volatile struct scsi_cmnd *connected; /* currently connected command */ - volatile struct scsi_cmnd *issue_queue; /* waiting to be issued */ - volatile struct scsi_cmnd *disconnected_queue; /* waiting for reconnect */ - volatile int restart_select; /* we have disconnected, - used to restart - NCR5380_select() */ - volatile unsigned aborted:1; /* flag, says aborted */ + unsigned char last_message; /* last message OUT */ + struct scsi_cmnd *connected; /* currently connected cmnd */ + struct scsi_cmnd *selecting; /* cmnd to be connected */ + struct list_head unissued; /* waiting to be issued */ + struct list_head autosense; /* priority issue queue */ + struct list_head disconnected; /* waiting for reconnect */ + spinlock_t lock; /* protects this struct */ int flags; - unsigned long time_expires; /* in jiffies, set prior to sleeping */ - int select_time; /* timer in select for target response */ - volatile struct scsi_cmnd *selecting; - struct delayed_work coroutine; /* our co-routine */ struct scsi_eh_save ses; + struct scsi_cmnd *sensing; char info[256]; int read_overruns; /* number of bytes to cut from a * transfer to handle chip overruns */ - int retain_dma_intr; struct work_struct main_task; - volatile int main_running; #ifdef SUPPORT_TAGS struct tag_alloc TagAlloc[8][8]; /* 8 targets and 8 LUNs */ #endif @@ -292,10 +263,23 @@ struct NCR5380_hostdata { unsigned spin_max_r; unsigned spin_max_w; #endif + struct workqueue_struct *work_q; + unsigned long accesses_per_ms; /* chip register accesses per ms */ }; #ifdef __KERNEL__ +struct NCR5380_cmd { + struct list_head list; +}; + +#define NCR5380_CMD_SIZE (sizeof(struct NCR5380_cmd)) + +static inline struct scsi_cmnd *NCR5380_to_scmd(struct NCR5380_cmd *ncmd_ptr) +{ + return ((struct scsi_cmnd *)ncmd_ptr) - 1; +} + #ifndef NDEBUG #define NDEBUG (0) #endif @@ -304,6 +288,11 @@ struct NCR5380_hostdata { do { if ((NDEBUG) & (flg)) \ printk(KERN_DEBUG fmt, ## __VA_ARGS__); } while (0) +#define dsprintk(flg, host, fmt, ...) \ + do { if ((NDEBUG) & (flg)) \ + shost_printk(KERN_DEBUG, host, fmt, ## __VA_ARGS__); \ + } while (0) + #if NDEBUG #define NCR5380_dprint(flg, arg) \ do { if ((NDEBUG) & (flg)) NCR5380_print(arg); } while (0) @@ -320,6 +309,7 @@ static void NCR5380_print(struct Scsi_Host *instance); static int NCR5380_probe_irq(struct Scsi_Host *instance, int possible); #endif static int NCR5380_init(struct Scsi_Host *instance, int flags); +static int NCR5380_maybe_reset_bus(struct Scsi_Host *); static void NCR5380_exit(struct Scsi_Host *instance); static void NCR5380_information_transfer(struct Scsi_Host *instance); #ifndef DONT_USE_INTR @@ -328,7 +318,7 @@ static irqreturn_t NCR5380_intr(int irq, void *dev_id); static void NCR5380_main(struct work_struct *work); static const char *NCR5380_info(struct Scsi_Host *instance); static void NCR5380_reselect(struct Scsi_Host *instance); -static int NCR5380_select(struct Scsi_Host *instance, struct scsi_cmnd *cmd); +static struct scsi_cmnd *NCR5380_select(struct Scsi_Host *, struct scsi_cmnd *); #if defined(PSEUDO_DMA) || defined(REAL_DMA) || defined(REAL_DMA_POLL) static int NCR5380_transfer_dma(struct Scsi_Host *instance, unsigned char *phase, int *count, unsigned char **data); #endif @@ -443,5 +433,4 @@ static __inline__ int NCR5380_pc_dma_residual(struct Scsi_Host *instance) #endif /* defined(i386) || defined(__alpha__) */ #endif /* defined(REAL_DMA) */ #endif /* __KERNEL__ */ -#endif /* ndef ASM */ #endif /* NCR5380_H */ |