1b2441318SGreg Kroah-Hartman /* SPDX-License-Identifier: GPL-2.0 */
21da177e4SLinus Torvalds
31da177e4SLinus Torvalds /* Driver for 53c700 and 53c700-66 chips from NCR and Symbios
41da177e4SLinus Torvalds *
51da177e4SLinus Torvalds * Copyright (C) 2001 by James.Bottomley@HansenPartnership.com
61da177e4SLinus Torvalds */
71da177e4SLinus Torvalds
81da177e4SLinus Torvalds #ifndef _53C700_H
91da177e4SLinus Torvalds #define _53C700_H
101da177e4SLinus Torvalds
111da177e4SLinus Torvalds #include <linux/interrupt.h>
121da177e4SLinus Torvalds #include <asm/io.h>
131da177e4SLinus Torvalds
141da177e4SLinus Torvalds #include <scsi/scsi_device.h>
150f13fc09SJames Bottomley #include <scsi/scsi_cmnd.h>
161da177e4SLinus Torvalds
171da177e4SLinus Torvalds /* Turn on for general debugging---too verbose for normal use */
181da177e4SLinus Torvalds #undef NCR_700_DEBUG
191da177e4SLinus Torvalds /* Debug the tag queues, checking hash queue allocation and deallocation
201da177e4SLinus Torvalds * and search for duplicate tags */
211da177e4SLinus Torvalds #undef NCR_700_TAG_DEBUG
221da177e4SLinus Torvalds
231da177e4SLinus Torvalds #ifdef NCR_700_DEBUG
241da177e4SLinus Torvalds #define DEBUG(x) printk x
25017560fcSJeff Garzik #define DDEBUG(prefix, sdev, fmt, a...) \
26017560fcSJeff Garzik sdev_printk(prefix, sdev, fmt, ##a)
27017560fcSJeff Garzik #define CDEBUG(prefix, scmd, fmt, a...) \
28017560fcSJeff Garzik scmd_printk(prefix, scmd, fmt, ##a)
291da177e4SLinus Torvalds #else
30017560fcSJeff Garzik #define DEBUG(x) do {} while (0)
31017560fcSJeff Garzik #define DDEBUG(prefix, scmd, fmt, a...) do {} while (0)
32017560fcSJeff Garzik #define CDEBUG(prefix, scmd, fmt, a...) do {} while (0)
331da177e4SLinus Torvalds #endif
341da177e4SLinus Torvalds
351da177e4SLinus Torvalds /* The number of available command slots */
361da177e4SLinus Torvalds #define NCR_700_COMMAND_SLOTS_PER_HOST 64
371da177e4SLinus Torvalds /* The maximum number of Scatter Gathers we allow */
381da177e4SLinus Torvalds #define NCR_700_SG_SEGMENTS 32
391da177e4SLinus Torvalds /* The maximum number of luns (make this of the form 2^n) */
401da177e4SLinus Torvalds #define NCR_700_MAX_LUNS 32
411da177e4SLinus Torvalds #define NCR_700_LUN_MASK (NCR_700_MAX_LUNS - 1)
421da177e4SLinus Torvalds /* Maximum number of tags the driver ever allows per device */
431da177e4SLinus Torvalds #define NCR_700_MAX_TAGS 16
441da177e4SLinus Torvalds /* Tag depth the driver starts out with (can be altered in sysfs) */
451da177e4SLinus Torvalds #define NCR_700_DEFAULT_TAGS 4
461da177e4SLinus Torvalds /* This is the default number of commands per LUN in the untagged case.
471da177e4SLinus Torvalds * two is a good value because it means we can have one command active and
481da177e4SLinus Torvalds * one command fully prepared and waiting
491da177e4SLinus Torvalds */
501da177e4SLinus Torvalds #define NCR_700_CMD_PER_LUN 2
511da177e4SLinus Torvalds /* magic byte identifying an internally generated REQUEST_SENSE command */
521da177e4SLinus Torvalds #define NCR_700_INTERNAL_SENSE_MAGIC 0x42
531da177e4SLinus Torvalds
541da177e4SLinus Torvalds struct NCR_700_Host_Parameters;
551da177e4SLinus Torvalds
561da177e4SLinus Torvalds /* These are the externally used routines */
571da177e4SLinus Torvalds struct Scsi_Host *NCR_700_detect(struct scsi_host_template *,
581da177e4SLinus Torvalds struct NCR_700_Host_Parameters *, struct device *);
591da177e4SLinus Torvalds int NCR_700_release(struct Scsi_Host *host);
607d12e780SDavid Howells irqreturn_t NCR_700_intr(int, void *);
611da177e4SLinus Torvalds
621da177e4SLinus Torvalds
631da177e4SLinus Torvalds enum NCR_700_Host_State {
641da177e4SLinus Torvalds NCR_700_HOST_BUSY,
651da177e4SLinus Torvalds NCR_700_HOST_FREE,
661da177e4SLinus Torvalds };
671da177e4SLinus Torvalds
681da177e4SLinus Torvalds struct NCR_700_SG_List {
691da177e4SLinus Torvalds /* The following is a script fragment to move the buffer onto the
701da177e4SLinus Torvalds * bus and then link the next fragment or return */
711da177e4SLinus Torvalds #define SCRIPT_MOVE_DATA_IN 0x09000000
721da177e4SLinus Torvalds #define SCRIPT_MOVE_DATA_OUT 0x08000000
731da177e4SLinus Torvalds __u32 ins;
741da177e4SLinus Torvalds __u32 pAddr;
751da177e4SLinus Torvalds #define SCRIPT_NOP 0x80000000
761da177e4SLinus Torvalds #define SCRIPT_RETURN 0x90080000
771da177e4SLinus Torvalds };
781da177e4SLinus Torvalds
790f13fc09SJames Bottomley struct NCR_700_Device_Parameters {
800f13fc09SJames Bottomley /* space for creating a request sense command. Really, except
810f13fc09SJames Bottomley * for the annoying SCSI-2 requirement for LUN information in
820f13fc09SJames Bottomley * cmnd[1], this could be in static storage */
830f13fc09SJames Bottomley unsigned char cmnd[MAX_COMMAND_SIZE];
840f13fc09SJames Bottomley __u8 depth;
8568350a88SChristoph Hellwig struct scsi_cmnd *current_cmnd; /* currently active command */
860f13fc09SJames Bottomley };
870f13fc09SJames Bottomley
880f13fc09SJames Bottomley
890f13fc09SJames Bottomley /* The SYNC negotiation sequence looks like:
901da177e4SLinus Torvalds *
911da177e4SLinus Torvalds * If DEV_NEGOTIATED_SYNC not set, tack and SDTR message on to the
92165ee621SFaisal Mehmood * initial identify for the device and set DEV_BEGIN_SYNC_NEGOTIATION
931da177e4SLinus Torvalds * If we get an SDTR reply, work out the SXFER parameters, squirrel
941da177e4SLinus Torvalds * them away here, clear DEV_BEGIN_SYNC_NEGOTIATION and set
951da177e4SLinus Torvalds * DEV_NEGOTIATED_SYNC. If we get a REJECT msg, squirrel
961da177e4SLinus Torvalds *
971da177e4SLinus Torvalds *
981da177e4SLinus Torvalds * 0:7 SXFER_REG negotiated value for this device
991da177e4SLinus Torvalds * 8:15 Current queue depth
1001da177e4SLinus Torvalds * 16 negotiated SYNC flag
1011da177e4SLinus Torvalds * 17 begin SYNC negotiation flag
1021da177e4SLinus Torvalds * 18 device supports tag queueing */
1031da177e4SLinus Torvalds #define NCR_700_DEV_NEGOTIATED_SYNC (1<<16)
1041da177e4SLinus Torvalds #define NCR_700_DEV_BEGIN_SYNC_NEGOTIATION (1<<17)
1051da177e4SLinus Torvalds #define NCR_700_DEV_PRINT_SYNC_NEGOTIATION (1<<19)
1061da177e4SLinus Torvalds
NCR_700_get_sense_cmnd(struct scsi_device * SDp)1070f13fc09SJames Bottomley static inline char *NCR_700_get_sense_cmnd(struct scsi_device *SDp)
1080f13fc09SJames Bottomley {
1090f13fc09SJames Bottomley struct NCR_700_Device_Parameters *hostdata = SDp->hostdata;
1100f13fc09SJames Bottomley
1110f13fc09SJames Bottomley return hostdata->cmnd;
1120f13fc09SJames Bottomley }
1130f13fc09SJames Bottomley
1141da177e4SLinus Torvalds static inline void
NCR_700_set_depth(struct scsi_device * SDp,__u8 depth)1151da177e4SLinus Torvalds NCR_700_set_depth(struct scsi_device *SDp, __u8 depth)
1161da177e4SLinus Torvalds {
1170f13fc09SJames Bottomley struct NCR_700_Device_Parameters *hostdata = SDp->hostdata;
1181da177e4SLinus Torvalds
1190f13fc09SJames Bottomley hostdata->depth = depth;
1201da177e4SLinus Torvalds }
1211da177e4SLinus Torvalds static inline __u8
NCR_700_get_depth(struct scsi_device * SDp)1221da177e4SLinus Torvalds NCR_700_get_depth(struct scsi_device *SDp)
1231da177e4SLinus Torvalds {
1240f13fc09SJames Bottomley struct NCR_700_Device_Parameters *hostdata = SDp->hostdata;
1250f13fc09SJames Bottomley
1260f13fc09SJames Bottomley return hostdata->depth;
1271da177e4SLinus Torvalds }
1281da177e4SLinus Torvalds static inline int
NCR_700_is_flag_set(struct scsi_device * SDp,__u32 flag)1291da177e4SLinus Torvalds NCR_700_is_flag_set(struct scsi_device *SDp, __u32 flag)
1301da177e4SLinus Torvalds {
1311da177e4SLinus Torvalds return (spi_flags(SDp->sdev_target) & flag) == flag;
1321da177e4SLinus Torvalds }
1331da177e4SLinus Torvalds static inline int
NCR_700_is_flag_clear(struct scsi_device * SDp,__u32 flag)1341da177e4SLinus Torvalds NCR_700_is_flag_clear(struct scsi_device *SDp, __u32 flag)
1351da177e4SLinus Torvalds {
1361da177e4SLinus Torvalds return (spi_flags(SDp->sdev_target) & flag) == 0;
1371da177e4SLinus Torvalds }
1381da177e4SLinus Torvalds static inline void
NCR_700_set_flag(struct scsi_device * SDp,__u32 flag)1391da177e4SLinus Torvalds NCR_700_set_flag(struct scsi_device *SDp, __u32 flag)
1401da177e4SLinus Torvalds {
1411da177e4SLinus Torvalds spi_flags(SDp->sdev_target) |= flag;
1421da177e4SLinus Torvalds }
1431da177e4SLinus Torvalds static inline void
NCR_700_clear_flag(struct scsi_device * SDp,__u32 flag)1441da177e4SLinus Torvalds NCR_700_clear_flag(struct scsi_device *SDp, __u32 flag)
1451da177e4SLinus Torvalds {
1461da177e4SLinus Torvalds spi_flags(SDp->sdev_target) &= ~flag;
1471da177e4SLinus Torvalds }
1481da177e4SLinus Torvalds
1491da177e4SLinus Torvalds enum NCR_700_tag_neg_state {
1501da177e4SLinus Torvalds NCR_700_START_TAG_NEGOTIATION = 0,
1511da177e4SLinus Torvalds NCR_700_DURING_TAG_NEGOTIATION = 1,
1521da177e4SLinus Torvalds NCR_700_FINISHED_TAG_NEGOTIATION = 2,
1531da177e4SLinus Torvalds };
1541da177e4SLinus Torvalds
1551da177e4SLinus Torvalds static inline enum NCR_700_tag_neg_state
NCR_700_get_tag_neg_state(struct scsi_device * SDp)1561da177e4SLinus Torvalds NCR_700_get_tag_neg_state(struct scsi_device *SDp)
1571da177e4SLinus Torvalds {
1581da177e4SLinus Torvalds return (enum NCR_700_tag_neg_state)((spi_flags(SDp->sdev_target)>>20) & 0x3);
1591da177e4SLinus Torvalds }
1601da177e4SLinus Torvalds
1611da177e4SLinus Torvalds static inline void
NCR_700_set_tag_neg_state(struct scsi_device * SDp,enum NCR_700_tag_neg_state state)1621da177e4SLinus Torvalds NCR_700_set_tag_neg_state(struct scsi_device *SDp,
1631da177e4SLinus Torvalds enum NCR_700_tag_neg_state state)
1641da177e4SLinus Torvalds {
1651da177e4SLinus Torvalds /* clear the slot */
1661da177e4SLinus Torvalds spi_flags(SDp->sdev_target) &= ~(0x3 << 20);
1671da177e4SLinus Torvalds spi_flags(SDp->sdev_target) |= ((__u32)state) << 20;
1681da177e4SLinus Torvalds }
1691da177e4SLinus Torvalds
1701da177e4SLinus Torvalds struct NCR_700_command_slot {
1711da177e4SLinus Torvalds struct NCR_700_SG_List SG[NCR_700_SG_SEGMENTS+1];
1721da177e4SLinus Torvalds struct NCR_700_SG_List *pSG;
1731da177e4SLinus Torvalds #define NCR_700_SLOT_MASK 0xFC
1741da177e4SLinus Torvalds #define NCR_700_SLOT_MAGIC 0xb8
1751da177e4SLinus Torvalds #define NCR_700_SLOT_FREE (0|NCR_700_SLOT_MAGIC) /* slot may be used */
1761da177e4SLinus Torvalds #define NCR_700_SLOT_BUSY (1|NCR_700_SLOT_MAGIC) /* slot has command active on HA */
1771da177e4SLinus Torvalds #define NCR_700_SLOT_QUEUED (2|NCR_700_SLOT_MAGIC) /* slot has command to be made active on HA */
1781da177e4SLinus Torvalds __u8 state;
17967d59dfdSJames Bottomley #define NCR_700_FLAG_AUTOSENSE 0x01
18067d59dfdSJames Bottomley __u8 flags;
18163273134SKars de Jong __u8 pad1[2]; /* Needed for m68k where min alignment is 2 bytes */
1821da177e4SLinus Torvalds int tag;
1831da177e4SLinus Torvalds __u32 resume_offset;
1841da177e4SLinus Torvalds struct scsi_cmnd *cmnd;
1851da177e4SLinus Torvalds /* The pci_mapped address of the actual command in cmnd */
1861da177e4SLinus Torvalds dma_addr_t pCmd;
1871da177e4SLinus Torvalds __u32 temp;
1881da177e4SLinus Torvalds /* if this command is a pci_single mapping, holds the dma address
1891da177e4SLinus Torvalds * for later unmapping in the done routine */
1901da177e4SLinus Torvalds dma_addr_t dma_handle;
1911da177e4SLinus Torvalds /* historical remnant, now used to link free commands */
1921da177e4SLinus Torvalds struct NCR_700_command_slot *ITL_forw;
1931da177e4SLinus Torvalds };
1941da177e4SLinus Torvalds
1951da177e4SLinus Torvalds struct NCR_700_Host_Parameters {
1961da177e4SLinus Torvalds /* These must be filled in by the calling driver */
1971da177e4SLinus Torvalds int clock; /* board clock speed in MHz */
19856fece20S void __iomem *base; /* the base for the port (copied to host) */
1991da177e4SLinus Torvalds struct device *dev;
2001da177e4SLinus Torvalds __u32 dmode_extra; /* adjustable bus settings */
20163273134SKars de Jong __u32 dcntl_extra; /* adjustable bus settings */
20263273134SKars de Jong __u32 ctest7_extra; /* adjustable bus settings */
2031da177e4SLinus Torvalds __u32 differential:1; /* if we are differential */
2041da177e4SLinus Torvalds #ifdef CONFIG_53C700_LE_ON_BE
2051da177e4SLinus Torvalds /* This option is for HP only. Set it if your chip is wired for
2061da177e4SLinus Torvalds * little endian on this platform (which is big endian) */
2071da177e4SLinus Torvalds __u32 force_le_on_be:1;
2081da177e4SLinus Torvalds #endif
2091da177e4SLinus Torvalds __u32 chip710:1; /* set if really a 710 not 700 */
210f67a9c15SThomas Bogendoerfer __u32 burst_length:4; /* set to 0 to disable 710 bursting */
211*91af2dd2SChristoph Hellwig __u32 noncoherent:1; /* needs to use non-coherent DMA */
2121da177e4SLinus Torvalds
2131da177e4SLinus Torvalds /* NOTHING BELOW HERE NEEDS ALTERING */
2141da177e4SLinus Torvalds __u32 fast:1; /* if we can alter the SCSI bus clock
2151da177e4SLinus Torvalds speed (so can negiotiate sync) */
2161da177e4SLinus Torvalds int sync_clock; /* The speed of the SYNC core */
2171da177e4SLinus Torvalds
2181da177e4SLinus Torvalds __u32 *script; /* pointer to script location */
2191da177e4SLinus Torvalds __u32 pScript; /* physical mem addr of script */
2201da177e4SLinus Torvalds
2211da177e4SLinus Torvalds enum NCR_700_Host_State state; /* protected by state lock */
2221da177e4SLinus Torvalds struct scsi_cmnd *cmd;
2231da177e4SLinus Torvalds /* Note: pScript contains the single consistent block of
2241da177e4SLinus Torvalds * memory. All the msgin, msgout and status are allocated in
2251da177e4SLinus Torvalds * this memory too (at separate cache lines). TOTAL_MEM_SIZE
2261da177e4SLinus Torvalds * represents the total size of this area */
2271da177e4SLinus Torvalds #define MSG_ARRAY_SIZE 8
2281da177e4SLinus Torvalds #define MSGOUT_OFFSET (L1_CACHE_ALIGN(sizeof(SCRIPT)))
2291da177e4SLinus Torvalds __u8 *msgout;
2301da177e4SLinus Torvalds #define MSGIN_OFFSET (MSGOUT_OFFSET + L1_CACHE_ALIGN(MSG_ARRAY_SIZE))
2311da177e4SLinus Torvalds __u8 *msgin;
2321da177e4SLinus Torvalds #define STATUS_OFFSET (MSGIN_OFFSET + L1_CACHE_ALIGN(MSG_ARRAY_SIZE))
2331da177e4SLinus Torvalds __u8 *status;
2341da177e4SLinus Torvalds #define SLOTS_OFFSET (STATUS_OFFSET + L1_CACHE_ALIGN(MSG_ARRAY_SIZE))
2351da177e4SLinus Torvalds struct NCR_700_command_slot *slots;
2361da177e4SLinus Torvalds #define TOTAL_MEM_SIZE (SLOTS_OFFSET + L1_CACHE_ALIGN(sizeof(struct NCR_700_command_slot) * NCR_700_COMMAND_SLOTS_PER_HOST))
2371da177e4SLinus Torvalds int saved_slot_position;
2381da177e4SLinus Torvalds int command_slot_count; /* protected by state lock */
2391da177e4SLinus Torvalds __u8 tag_negotiated;
2401da177e4SLinus Torvalds __u8 rev;
2411da177e4SLinus Torvalds __u8 reselection_id;
2421da177e4SLinus Torvalds __u8 min_period;
2431da177e4SLinus Torvalds
2441da177e4SLinus Torvalds /* Free list, singly linked by ITL_forw elements */
2451da177e4SLinus Torvalds struct NCR_700_command_slot *free_list;
2461da177e4SLinus Torvalds /* Completion for waited for ops, like reset, abort or
2471da177e4SLinus Torvalds * device reset.
2481da177e4SLinus Torvalds *
2491da177e4SLinus Torvalds * NOTE: relies on single threading in the error handler to
2501da177e4SLinus Torvalds * have only one outstanding at once */
2511da177e4SLinus Torvalds struct completion *eh_complete;
2521da177e4SLinus Torvalds };
2531da177e4SLinus Torvalds
2541da177e4SLinus Torvalds /*
2551da177e4SLinus Torvalds * 53C700 Register Interface - the offset from the Selected base
2561da177e4SLinus Torvalds * I/O address */
2571da177e4SLinus Torvalds #ifdef CONFIG_53C700_LE_ON_BE
2581da177e4SLinus Torvalds #define bE (hostdata->force_le_on_be ? 0 : 3)
2591da177e4SLinus Torvalds #define bSWAP (hostdata->force_le_on_be)
2608f23d475SJames Bottomley #define bEBus (!hostdata->force_le_on_be)
2611da177e4SLinus Torvalds #elif defined(__BIG_ENDIAN)
2621da177e4SLinus Torvalds #define bE 3
2631da177e4SLinus Torvalds #define bSWAP 0
2641da177e4SLinus Torvalds #elif defined(__LITTLE_ENDIAN)
2651da177e4SLinus Torvalds #define bE 0
2661da177e4SLinus Torvalds #define bSWAP 0
2671da177e4SLinus Torvalds #else
2681da177e4SLinus Torvalds #error "__BIG_ENDIAN or __LITTLE_ENDIAN must be defined, did you include byteorder.h?"
2691da177e4SLinus Torvalds #endif
2708f23d475SJames Bottomley #ifndef bEBus
2718f23d475SJames Bottomley #ifdef CONFIG_53C700_BE_BUS
2728f23d475SJames Bottomley #define bEBus 1
2738f23d475SJames Bottomley #else
2748f23d475SJames Bottomley #define bEBus 0
2758f23d475SJames Bottomley #endif
2768f23d475SJames Bottomley #endif
2771da177e4SLinus Torvalds #define bS_to_cpu(x) (bSWAP ? le32_to_cpu(x) : (x))
2781da177e4SLinus Torvalds #define bS_to_host(x) (bSWAP ? cpu_to_le32(x) : (x))
2791da177e4SLinus Torvalds
2801da177e4SLinus Torvalds /* NOTE: These registers are in the LE register space only, the required byte
2811da177e4SLinus Torvalds * swapping is done by the NCR_700_{read|write}[b] functions */
2821da177e4SLinus Torvalds #define SCNTL0_REG 0x00
2831da177e4SLinus Torvalds #define FULL_ARBITRATION 0xc0
2841da177e4SLinus Torvalds #define PARITY 0x08
2851da177e4SLinus Torvalds #define ENABLE_PARITY 0x04
2861da177e4SLinus Torvalds #define AUTO_ATN 0x02
2871da177e4SLinus Torvalds #define SCNTL1_REG 0x01
2881da177e4SLinus Torvalds #define SLOW_BUS 0x80
2891da177e4SLinus Torvalds #define ENABLE_SELECT 0x20
2901da177e4SLinus Torvalds #define ASSERT_RST 0x08
2911da177e4SLinus Torvalds #define ASSERT_EVEN_PARITY 0x04
2921da177e4SLinus Torvalds #define SDID_REG 0x02
2931da177e4SLinus Torvalds #define SIEN_REG 0x03
2941da177e4SLinus Torvalds #define PHASE_MM_INT 0x80
2951da177e4SLinus Torvalds #define FUNC_COMP_INT 0x40
2961da177e4SLinus Torvalds #define SEL_TIMEOUT_INT 0x20
2971da177e4SLinus Torvalds #define SELECT_INT 0x10
2981da177e4SLinus Torvalds #define GROSS_ERR_INT 0x08
2991da177e4SLinus Torvalds #define UX_DISC_INT 0x04
3001da177e4SLinus Torvalds #define RST_INT 0x02
3011da177e4SLinus Torvalds #define PAR_ERR_INT 0x01
3021da177e4SLinus Torvalds #define SCID_REG 0x04
3031da177e4SLinus Torvalds #define SXFER_REG 0x05
3041da177e4SLinus Torvalds #define ASYNC_OPERATION 0x00
3051da177e4SLinus Torvalds #define SODL_REG 0x06
3061da177e4SLinus Torvalds #define SOCL_REG 0x07
3071da177e4SLinus Torvalds #define SFBR_REG 0x08
3081da177e4SLinus Torvalds #define SIDL_REG 0x09
3091da177e4SLinus Torvalds #define SBDL_REG 0x0A
3101da177e4SLinus Torvalds #define SBCL_REG 0x0B
3111da177e4SLinus Torvalds /* read bits */
3121da177e4SLinus Torvalds #define SBCL_IO 0x01
3131da177e4SLinus Torvalds /*write bits */
3141da177e4SLinus Torvalds #define SYNC_DIV_AS_ASYNC 0x00
3151da177e4SLinus Torvalds #define SYNC_DIV_1_0 0x01
3161da177e4SLinus Torvalds #define SYNC_DIV_1_5 0x02
3171da177e4SLinus Torvalds #define SYNC_DIV_2_0 0x03
3181da177e4SLinus Torvalds #define DSTAT_REG 0x0C
3191da177e4SLinus Torvalds #define ILGL_INST_DETECTED 0x01
3201da177e4SLinus Torvalds #define WATCH_DOG_INTERRUPT 0x02
3211da177e4SLinus Torvalds #define SCRIPT_INT_RECEIVED 0x04
3221da177e4SLinus Torvalds #define ABORTED 0x10
3231da177e4SLinus Torvalds #define SSTAT0_REG 0x0D
3241da177e4SLinus Torvalds #define PARITY_ERROR 0x01
3251da177e4SLinus Torvalds #define SCSI_RESET_DETECTED 0x02
3261da177e4SLinus Torvalds #define UNEXPECTED_DISCONNECT 0x04
3271da177e4SLinus Torvalds #define SCSI_GROSS_ERROR 0x08
3281da177e4SLinus Torvalds #define SELECTED 0x10
3291da177e4SLinus Torvalds #define SELECTION_TIMEOUT 0x20
3301da177e4SLinus Torvalds #define FUNCTION_COMPLETE 0x40
3311da177e4SLinus Torvalds #define PHASE_MISMATCH 0x80
3321da177e4SLinus Torvalds #define SSTAT1_REG 0x0E
3331da177e4SLinus Torvalds #define SIDL_REG_FULL 0x80
3341da177e4SLinus Torvalds #define SODR_REG_FULL 0x40
3351da177e4SLinus Torvalds #define SODL_REG_FULL 0x20
3361da177e4SLinus Torvalds #define SSTAT2_REG 0x0F
3371da177e4SLinus Torvalds #define CTEST0_REG 0x14
3381da177e4SLinus Torvalds #define BTB_TIMER_DISABLE 0x40
3391da177e4SLinus Torvalds #define CTEST1_REG 0x15
3401da177e4SLinus Torvalds #define CTEST2_REG 0x16
3411da177e4SLinus Torvalds #define CTEST3_REG 0x17
3421da177e4SLinus Torvalds #define CTEST4_REG 0x18
3431da177e4SLinus Torvalds #define DISABLE_FIFO 0x00
3441da177e4SLinus Torvalds #define SLBE 0x10
3451da177e4SLinus Torvalds #define SFWR 0x08
3461da177e4SLinus Torvalds #define BYTE_LANE0 0x04
3471da177e4SLinus Torvalds #define BYTE_LANE1 0x05
3481da177e4SLinus Torvalds #define BYTE_LANE2 0x06
3491da177e4SLinus Torvalds #define BYTE_LANE3 0x07
3501da177e4SLinus Torvalds #define SCSI_ZMODE 0x20
3511da177e4SLinus Torvalds #define ZMODE 0x40
3521da177e4SLinus Torvalds #define CTEST5_REG 0x19
3531da177e4SLinus Torvalds #define MASTER_CONTROL 0x10
3541da177e4SLinus Torvalds #define DMA_DIRECTION 0x08
3551da177e4SLinus Torvalds #define CTEST7_REG 0x1B
3561da177e4SLinus Torvalds #define BURST_DISABLE 0x80 /* 710 only */
3571da177e4SLinus Torvalds #define SEL_TIMEOUT_DISABLE 0x10 /* 710 only */
3581da177e4SLinus Torvalds #define DFP 0x08
3591da177e4SLinus Torvalds #define EVP 0x04
36063273134SKars de Jong #define CTEST7_TT1 0x02
3611da177e4SLinus Torvalds #define DIFF 0x01
3621da177e4SLinus Torvalds #define CTEST6_REG 0x1A
3631da177e4SLinus Torvalds #define TEMP_REG 0x1C
3641da177e4SLinus Torvalds #define DFIFO_REG 0x20
3651da177e4SLinus Torvalds #define FLUSH_DMA_FIFO 0x80
3661da177e4SLinus Torvalds #define CLR_FIFO 0x40
3671da177e4SLinus Torvalds #define ISTAT_REG 0x21
3681da177e4SLinus Torvalds #define ABORT_OPERATION 0x80
3691da177e4SLinus Torvalds #define SOFTWARE_RESET_710 0x40
3701da177e4SLinus Torvalds #define DMA_INT_PENDING 0x01
3711da177e4SLinus Torvalds #define SCSI_INT_PENDING 0x02
3721da177e4SLinus Torvalds #define CONNECTED 0x08
3731da177e4SLinus Torvalds #define CTEST8_REG 0x22
3741da177e4SLinus Torvalds #define LAST_DIS_ENBL 0x01
3751da177e4SLinus Torvalds #define SHORTEN_FILTERING 0x04
3761da177e4SLinus Torvalds #define ENABLE_ACTIVE_NEGATION 0x10
3771da177e4SLinus Torvalds #define GENERATE_RECEIVE_PARITY 0x20
3781da177e4SLinus Torvalds #define CLR_FIFO_710 0x04
3791da177e4SLinus Torvalds #define FLUSH_DMA_FIFO_710 0x08
3801da177e4SLinus Torvalds #define CTEST9_REG 0x23
3811da177e4SLinus Torvalds #define DBC_REG 0x24
3821da177e4SLinus Torvalds #define DCMD_REG 0x27
3831da177e4SLinus Torvalds #define DNAD_REG 0x28
3841da177e4SLinus Torvalds #define DIEN_REG 0x39
3851da177e4SLinus Torvalds #define BUS_FAULT 0x20
3861da177e4SLinus Torvalds #define ABORT_INT 0x10
3871da177e4SLinus Torvalds #define INT_INST_INT 0x04
3881da177e4SLinus Torvalds #define WD_INT 0x02
3891da177e4SLinus Torvalds #define ILGL_INST_INT 0x01
3901da177e4SLinus Torvalds #define DCNTL_REG 0x3B
3911da177e4SLinus Torvalds #define SOFTWARE_RESET 0x01
3921da177e4SLinus Torvalds #define COMPAT_700_MODE 0x01
3931da177e4SLinus Torvalds #define SCRPTS_16BITS 0x20
39463273134SKars de Jong #define EA_710 0x20
3951da177e4SLinus Torvalds #define ASYNC_DIV_2_0 0x00
3961da177e4SLinus Torvalds #define ASYNC_DIV_1_5 0x40
3971da177e4SLinus Torvalds #define ASYNC_DIV_1_0 0x80
3981da177e4SLinus Torvalds #define ASYNC_DIV_3_0 0xc0
3991da177e4SLinus Torvalds #define DMODE_710_REG 0x38
4001da177e4SLinus Torvalds #define DMODE_700_REG 0x34
4011da177e4SLinus Torvalds #define BURST_LENGTH_1 0x00
4021da177e4SLinus Torvalds #define BURST_LENGTH_2 0x40
4031da177e4SLinus Torvalds #define BURST_LENGTH_4 0x80
4041da177e4SLinus Torvalds #define BURST_LENGTH_8 0xC0
4051da177e4SLinus Torvalds #define DMODE_FC1 0x10
4061da177e4SLinus Torvalds #define DMODE_FC2 0x20
4071da177e4SLinus Torvalds #define BW16 32
4081da177e4SLinus Torvalds #define MODE_286 16
4091da177e4SLinus Torvalds #define IO_XFER 8
4101da177e4SLinus Torvalds #define FIXED_ADDR 4
4111da177e4SLinus Torvalds
4121da177e4SLinus Torvalds #define DSP_REG 0x2C
4131da177e4SLinus Torvalds #define DSPS_REG 0x30
4141da177e4SLinus Torvalds
4151da177e4SLinus Torvalds /* Parameters to begin SDTR negotiations. Empirically, I find that
4161da177e4SLinus Torvalds * the 53c700-66 cannot handle an offset >8, so don't change this */
4171da177e4SLinus Torvalds #define NCR_700_MAX_OFFSET 8
4181da177e4SLinus Torvalds /* Was hoping the max offset would be greater for the 710, but
4191da177e4SLinus Torvalds * empirically it seems to be 8 also */
4201da177e4SLinus Torvalds #define NCR_710_MAX_OFFSET 8
4211da177e4SLinus Torvalds #define NCR_700_MIN_XFERP 1
4221da177e4SLinus Torvalds #define NCR_710_MIN_XFERP 0
4231da177e4SLinus Torvalds #define NCR_700_MIN_PERIOD 25 /* for SDTR message, 100ns */
4241da177e4SLinus Torvalds
425*91af2dd2SChristoph Hellwig #define script_patch_32(h, script, symbol, value) \
4261da177e4SLinus Torvalds { \
4271da177e4SLinus Torvalds int i; \
4280da21c44SHelge Deller dma_addr_t da = value; \
4291da177e4SLinus Torvalds for(i=0; i< (sizeof(A_##symbol##_used) / sizeof(__u32)); i++) { \
4300da21c44SHelge Deller __u32 val = bS_to_cpu((script)[A_##symbol##_used[i]]) + da; \
4311da177e4SLinus Torvalds (script)[A_##symbol##_used[i]] = bS_to_host(val); \
432*91af2dd2SChristoph Hellwig dma_sync_to_dev((h), &(script)[A_##symbol##_used[i]], 4); \
4330da21c44SHelge Deller DEBUG((" script, patching %s at %d to %pad\n", \
4340da21c44SHelge Deller #symbol, A_##symbol##_used[i], &da)); \
4351da177e4SLinus Torvalds } \
4361da177e4SLinus Torvalds }
4371da177e4SLinus Torvalds
438*91af2dd2SChristoph Hellwig #define script_patch_32_abs(h, script, symbol, value) \
4391da177e4SLinus Torvalds { \
4401da177e4SLinus Torvalds int i; \
4410da21c44SHelge Deller dma_addr_t da = value; \
4421da177e4SLinus Torvalds for(i=0; i< (sizeof(A_##symbol##_used) / sizeof(__u32)); i++) { \
4430da21c44SHelge Deller (script)[A_##symbol##_used[i]] = bS_to_host(da); \
444*91af2dd2SChristoph Hellwig dma_sync_to_dev((h), &(script)[A_##symbol##_used[i]], 4); \
4450da21c44SHelge Deller DEBUG((" script, patching %s at %d to %pad\n", \
4460da21c44SHelge Deller #symbol, A_##symbol##_used[i], &da)); \
4471da177e4SLinus Torvalds } \
4481da177e4SLinus Torvalds }
4491da177e4SLinus Torvalds
4501da177e4SLinus Torvalds /* Used for patching the SCSI ID in the SELECT instruction */
451*91af2dd2SChristoph Hellwig #define script_patch_ID(h, script, symbol, value) \
4521da177e4SLinus Torvalds { \
4531da177e4SLinus Torvalds int i; \
4541da177e4SLinus Torvalds for(i=0; i< (sizeof(A_##symbol##_used) / sizeof(__u32)); i++) { \
4551da177e4SLinus Torvalds __u32 val = bS_to_cpu((script)[A_##symbol##_used[i]]); \
4561da177e4SLinus Torvalds val &= 0xff00ffff; \
4571da177e4SLinus Torvalds val |= ((value) & 0xff) << 16; \
4581da177e4SLinus Torvalds (script)[A_##symbol##_used[i]] = bS_to_host(val); \
459*91af2dd2SChristoph Hellwig dma_sync_to_dev((h), &(script)[A_##symbol##_used[i]], 4); \
4601da177e4SLinus Torvalds DEBUG((" script, patching ID field %s at %d to 0x%x\n", \
4611da177e4SLinus Torvalds #symbol, A_##symbol##_used[i], val)); \
4621da177e4SLinus Torvalds } \
4631da177e4SLinus Torvalds }
4641da177e4SLinus Torvalds
465*91af2dd2SChristoph Hellwig #define script_patch_16(h, script, symbol, value) \
4661da177e4SLinus Torvalds { \
4671da177e4SLinus Torvalds int i; \
4681da177e4SLinus Torvalds for(i=0; i< (sizeof(A_##symbol##_used) / sizeof(__u32)); i++) { \
4691da177e4SLinus Torvalds __u32 val = bS_to_cpu((script)[A_##symbol##_used[i]]); \
4701da177e4SLinus Torvalds val &= 0xffff0000; \
4711da177e4SLinus Torvalds val |= ((value) & 0xffff); \
4721da177e4SLinus Torvalds (script)[A_##symbol##_used[i]] = bS_to_host(val); \
473*91af2dd2SChristoph Hellwig dma_sync_to_dev((h), &(script)[A_##symbol##_used[i]], 4); \
4741da177e4SLinus Torvalds DEBUG((" script, patching short field %s at %d to 0x%x\n", \
4751da177e4SLinus Torvalds #symbol, A_##symbol##_used[i], val)); \
4761da177e4SLinus Torvalds } \
4771da177e4SLinus Torvalds }
4781da177e4SLinus Torvalds
4791da177e4SLinus Torvalds
4801da177e4SLinus Torvalds static inline __u8
NCR_700_readb(struct Scsi_Host * host,__u32 reg)4811da177e4SLinus Torvalds NCR_700_readb(struct Scsi_Host *host, __u32 reg)
4821da177e4SLinus Torvalds {
48356fece20S const struct NCR_700_Host_Parameters *hostdata
4841da177e4SLinus Torvalds = (struct NCR_700_Host_Parameters *)host->hostdata[0];
4851da177e4SLinus Torvalds
48656fece20S return ioread8(hostdata->base + (reg^bE));
4871da177e4SLinus Torvalds }
4881da177e4SLinus Torvalds
4891da177e4SLinus Torvalds static inline __u32
NCR_700_readl(struct Scsi_Host * host,__u32 reg)4901da177e4SLinus Torvalds NCR_700_readl(struct Scsi_Host *host, __u32 reg)
4911da177e4SLinus Torvalds {
49256fece20S const struct NCR_700_Host_Parameters *hostdata
4931da177e4SLinus Torvalds = (struct NCR_700_Host_Parameters *)host->hostdata[0];
4948f23d475SJames Bottomley __u32 value = bEBus ? ioread32be(hostdata->base + reg) :
4958f23d475SJames Bottomley ioread32(hostdata->base + reg);
49656fece20S #if 1
49756fece20S /* sanity check the register */
498125e1874SEric Sesterhenn BUG_ON((reg & 0x3) != 0);
49956fece20S #endif
5001da177e4SLinus Torvalds
5018f23d475SJames Bottomley return value;
5021da177e4SLinus Torvalds }
5031da177e4SLinus Torvalds
5041da177e4SLinus Torvalds static inline void
NCR_700_writeb(__u8 value,struct Scsi_Host * host,__u32 reg)5051da177e4SLinus Torvalds NCR_700_writeb(__u8 value, struct Scsi_Host *host, __u32 reg)
5061da177e4SLinus Torvalds {
50756fece20S const struct NCR_700_Host_Parameters *hostdata
5081da177e4SLinus Torvalds = (struct NCR_700_Host_Parameters *)host->hostdata[0];
5091da177e4SLinus Torvalds
51056fece20S iowrite8(value, hostdata->base + (reg^bE));
5111da177e4SLinus Torvalds }
5121da177e4SLinus Torvalds
5131da177e4SLinus Torvalds static inline void
NCR_700_writel(__u32 value,struct Scsi_Host * host,__u32 reg)5141da177e4SLinus Torvalds NCR_700_writel(__u32 value, struct Scsi_Host *host, __u32 reg)
5151da177e4SLinus Torvalds {
51656fece20S const struct NCR_700_Host_Parameters *hostdata
5171da177e4SLinus Torvalds = (struct NCR_700_Host_Parameters *)host->hostdata[0];
5181da177e4SLinus Torvalds
51956fece20S #if 1
52056fece20S /* sanity check the register */
521125e1874SEric Sesterhenn BUG_ON((reg & 0x3) != 0);
5221da177e4SLinus Torvalds #endif
5231da177e4SLinus Torvalds
5248f23d475SJames Bottomley bEBus ? iowrite32be(value, hostdata->base + reg):
5258f23d475SJames Bottomley iowrite32(value, hostdata->base + reg);
52656fece20S }
52756fece20S
5281da177e4SLinus Torvalds #endif
529