drivers/scsi/wd719x.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef _WD719X_H_
   3 #define _WD719X_H_
   4
   5 #define WD719X_SG 255           /* Scatter/gather size */
   6
   7 struct wd719x_sglist {
   8         __le32 ptr;
   9         __le32 length;
  10 } __packed;
  11
  12 enum wd719x_card_type {
  13         WD719X_TYPE_UNKNOWN = 0,
  14         WD719X_TYPE_7193,
  15         WD719X_TYPE_7197,
  16         WD719X_TYPE_7296,
  17 };
  18
  19 union wd719x_regs {
  20         __le32 all;     /* All Status at once */
  21         struct {
  22                 u8 OPC;         /* Opcode register */
  23                 u8 SCSI;        /* SCSI Errors */
  24                 u8 SUE;         /* Spider unique Errors */
  25                 u8 INT;         /* Interrupt Status */
  26         } bytes;
  27 };
  28
  29 /* Spider Command Block (SCB) */
  30 struct wd719x_scb {
  31         __le32 Int_SCB; /* 00-03 Internal SCB link pointer (must be cleared) */
  32         u8 SCB_opcode;  /* 04 SCB Command opcode */
  33         u8 CDB_tag;     /* 05 SCSI Tag byte for CDB queues (0 if untagged) */
  34         u8 lun;         /* 06 SCSI LUN */
  35         u8 devid;       /* 07 SCSI Device ID */
  36         u8 CDB[16];     /* 08-23 SCSI CDB (16 bytes as defined by ANSI spec. */
  37         __le32 data_p;  /* 24-27 Data transfer address (or SG list address) */
  38         __le32 data_length; /* 28-31 Data transfer Length (or SG list length) */
  39         __le32 CDB_link;    /* 32-35 SCSI CDB Link Ptr */
  40         __le32 sense_buf;   /* 36-39 Auto request sense buffer address */
  41         u8 sense_buf_length;/* 40 Auto request sense transfer length */
  42         u8 reserved;    /* 41 reserved */
  43         u8 SCB_options; /* 42 SCB-options */
  44         u8 SCB_tag_msg; /* 43 Tagged messages options */
  45         /* Not filled in by host */
  46         __le32 req_ptr; /* 44-47 Ptr to Host Request returned on interrupt */
  47         u8 host_opcode; /* 48 Host Command Opcode (same as AMR_00) */
  48         u8 scsi_stat;   /* 49 SCSI Status returned */
  49         u8 ret_error;   /* 50 SPIDER Unique Error Code returned (SUE) */
  50         u8 int_stat;    /* 51 Message u8 / Interrupt Status byte returned */
  51         __le32 transferred; /* 52-55 Bytes Transferred */
  52         u8 last_trans[3];  /* 56-58 Bytes Transferred in last session */
  53         u8 length;      /* 59 SCSI Messages Length (1-8) */
  54         u8 sync_offset; /* 60 Synchronous offset */
  55         u8 sync_rate;   /* 61 Synchronous rate */
  56         u8 flags[2];    /* 62-63 SCB specific flags (local to each thread) */
  57         /* everything below is for driver use (not used by card) */
  58         dma_addr_t phys;        /* bus address of the SCB */
  59         struct scsi_cmnd *cmd;  /* a copy of the pointer we were passed */
  60         struct list_head list;
  61         struct wd719x_sglist sg_list[WD719X_SG] __aligned(8); /* SG list */
  62 } __packed;
  63
  64 struct wd719x {
  65         struct Scsi_Host *sh;   /* pointer to host structure */
  66         struct pci_dev *pdev;
  67         void __iomem *base;
  68         enum wd719x_card_type type; /* type of card */
  69         void *fw_virt;          /* firmware buffer CPU address */
  70         dma_addr_t fw_phys;     /* firmware buffer bus address */
  71         size_t fw_size;         /* firmware buffer size */
  72         struct wd719x_host_param *params; /* host parameters (EEPROM) */
  73         dma_addr_t params_phys; /* host parameters bus address */
  74         void *hash_virt;        /* hash table CPU address */
  75         dma_addr_t hash_phys;   /* hash table bus address */
  76         struct list_head active_scbs;
  77         struct list_head free_scbs;
  78 };
  79
  80 /* timeout delays in microsecs */
  81 #define WD719X_WAIT_FOR_CMD_READY       500
  82 #define WD719X_WAIT_FOR_RISC            2000
  83 #define WD719X_WAIT_FOR_SCSI_RESET      3000000
  84
  85 /* All commands except 0x00 generate an interrupt */
  86 #define WD719X_CMD_READY        0x00 /* Command register ready (or noop) */
  87 #define WD719X_CMD_INIT_RISC    0x01 /* Initialize RISC */
  88 /* 0x02 is reserved */
  89 #define WD719X_CMD_BUSRESET     0x03 /* Assert SCSI bus reset */
  90 #define WD719X_CMD_READ_FIRMVER 0x04 /* Read the Firmware Revision */
  91 #define WD719X_CMD_ECHO_BYTES   0x05 /* Echo command bytes (DW) */
  92 /* 0x06 is reserved */
  93 /* 0x07 is reserved */
  94 #define WD719X_CMD_GET_PARAM    0x08 /* Get programmable parameters */
  95 #define WD719X_CMD_SET_PARAM    0x09 /* Set programmable parameters */
  96 #define WD719X_CMD_SLEEP        0x0a /* Put SPIDER to sleep */
  97 #define WD719X_CMD_READ_INIT    0x0b /* Read initialization parameters */
  98 #define WD719X_CMD_RESTORE_INIT 0x0c /* Restore initialization parameters */
  99 /* 0x0d is reserved */
 100 /* 0x0e is reserved */
 101 /* 0x0f is reserved */
 102 #define WD719X_CMD_ABORT_TAG    0x10 /* Send Abort tag message to target */
 103 #define WD719X_CMD_ABORT        0x11 /* Send Abort message to target */
 104 #define WD719X_CMD_RESET        0x12 /* Send Reset message to target */
 105 #define WD719X_CMD_INIT_SCAM    0x13 /* Initiate SCAM */
 106 #define WD719X_CMD_GET_SYNC     0x14 /* Get synchronous rates */
 107 #define WD719X_CMD_SET_SYNC     0x15 /* Set synchronous rates */
 108 #define WD719X_CMD_GET_WIDTH    0x16 /* Get SCSI bus width */
 109 #define WD719X_CMD_SET_WIDTH    0x17 /* Set SCSI bus width */
 110 #define WD719X_CMD_GET_TAGS     0x18 /* Get tag flags */
 111 #define WD719X_CMD_SET_TAGS     0x19 /* Set tag flags */
 112 #define WD719X_CMD_GET_PARAM2   0x1a /* Get programmable params (format 2) */
 113 #define WD719X_CMD_SET_PARAM2   0x1b /* Set programmable params (format 2) */
 114 /* Commands with request pointers (mailbox) */
 115 #define WD719X_CMD_PROCESS_SCB  0x80 /* Process SCSI Control Block (SCB) */
 116 /* No interrupt generated on acceptance of SCB pointer */
 117
 118 /* interrupt status defines */
 119 #define WD719X_INT_NONE         0x00 /* No interrupt pending */
 120 #define WD719X_INT_NOERRORS     0x01 /* Command completed with no errors */
 121 #define WD719X_INT_LINKNOERRORS 0x02 /* link cmd completed with no errors */
 122 #define WD719X_INT_LINKNOSTATUS 0x03 /* link cmd completed with no flag set */
 123 #define WD719X_INT_ERRORSLOGGED 0x04 /* cmd completed with errors logged */
 124 #define WD719X_INT_SPIDERFAILED 0x05 /* cmd failed without valid SCSI status */
 125 #define WD719X_INT_BADINT       0x80 /* unsolicited interrupt */
 126 #define WD719X_INT_PIOREADY     0xf0 /* data ready for PIO output */
 127
 128 /* Spider Unique Error Codes (SUE) */
 129 #define WD719X_SUE_NOERRORS     0x00 /* No errors detected by SPIDER */
 130 #define WD719X_SUE_REJECTED     0x01 /* Command Rejected (bad opcode/param) */
 131 #define WD719X_SUE_SCBQFULL     0x02 /* SCB queue full */
 132 /* 0x03 is reserved */
 133 #define WD719X_SUE_TERM         0x04 /* Host terminated SCB via primative cmd */
 134 #define WD719X_SUE_CHAN1PAR     0x05 /* PCI Channel 1 parity error occurred */
 135 #define WD719X_SUE_CHAN1ABORT   0x06 /* PCI Channel 1 system abort occurred */
 136 #define WD719X_SUE_CHAN23PAR    0x07 /* PCI Channel 2/3 parity error occurred */
 137 #define WD719X_SUE_CHAN23ABORT  0x08 /* PCI Channel 2/3 system abort occurred */
 138 #define WD719X_SUE_TIMEOUT      0x10 /* Selection/reselection timeout */
 139 #define WD719X_SUE_RESET        0x11 /* SCSI bus reset occurred */
 140 #define WD719X_SUE_BUSERROR     0x12 /* SCSI bus error */
 141 #define WD719X_SUE_WRONGWAY     0x13 /* Wrong data transfer dir set by target */
 142 #define WD719X_SUE_BADPHASE     0x14 /* SCSI phase illegal or unexpected */
 143 #define WD719X_SUE_TOOLONG      0x15 /* target requested too much data */
 144 #define WD719X_SUE_BUSFREE      0x16 /* Unexpected SCSI bus free */
 145 #define WD719X_SUE_ARSDONE      0x17 /* Auto request sense executed */
 146 #define WD719X_SUE_IGNORED      0x18 /* SCSI message was ignored by target */
 147 #define WD719X_SUE_WRONGTAGS    0x19 /* Tagged SCB & tags off (or vice versa) */
 148 #define WD719X_SUE_BADTAGS      0x1a /* Wrong tag message type for target */
 149 #define WD719X_SUE_NOSCAMID     0x1b /* No SCAM soft ID available */
 150
 151 /* code sizes */
 152 #define WD719X_HASH_TABLE_SIZE  4096
 153
 154 /* Advanced Mode Registers */
 155 /* Regs 0x00..0x1f are for Advanced Mode of the card (RISC is running). */
 156 #define WD719X_AMR_COMMAND              0x00
 157 #define WD719X_AMR_CMD_PARAM            0x01
 158 #define WD719X_AMR_CMD_PARAM_2          0x02
 159 #define WD719X_AMR_CMD_PARAM_3          0x03
 160 #define WD719X_AMR_SCB_IN               0x04
 161
 162 #define WD719X_AMR_BIOS_SHARE_INT       0x0f
 163
 164 #define WD719X_AMR_SCB_OUT              0x18
 165 #define WD719X_AMR_OP_CODE              0x1c
 166 #define WD719X_AMR_SCSI_STATUS          0x1d
 167 #define WD719X_AMR_SCB_ERROR            0x1e
 168 #define WD719X_AMR_INT_STATUS           0x1f
 169
 170 #define WD719X_DISABLE_INT      0x80
 171
 172 /* SCB flags */
 173 #define WD719X_SCB_FLAGS_CHECK_DIRECTION        0x01
 174 #define WD719X_SCB_FLAGS_PCI_TO_SCSI            0x02
 175 #define WD719X_SCB_FLAGS_AUTO_REQUEST_SENSE     0x10
 176 #define WD719X_SCB_FLAGS_DO_SCATTER_GATHER      0x20
 177 #define WD719X_SCB_FLAGS_NO_DISCONNECT          0x40
 178
 179 /* PCI Registers used for reset, initial code download */
 180 /* Regs 0x20..0x3f are for Normal (DOS) mode (RISC is asleep). */
 181 #define WD719X_PCI_GPIO_CONTROL         0x3C
 182 #define WD719X_PCI_GPIO_DATA            0x3D
 183 #define WD719X_PCI_PORT_RESET           0x3E
 184 #define WD719X_PCI_MODE_SELECT          0x3F
 185
 186 #define WD719X_PCI_EXTERNAL_ADDR        0x60
 187 #define WD719X_PCI_INTERNAL_ADDR        0x64
 188 #define WD719X_PCI_DMA_TRANSFER_SIZE    0x66
 189 #define WD719X_PCI_CHANNEL2_3CMD        0x68
 190 #define WD719X_PCI_CHANNEL2_3STATUS     0x69
 191
 192 #define WD719X_GPIO_ID_BITS             0x0a
 193 #define WD719X_PRAM_BASE_ADDR           0x00
 194
 195 /* codes written to or read from the card */
 196 #define WD719X_PCI_RESET                 0x01
 197 #define WD719X_ENABLE_ADVANCE_MODE       0x01
 198
 199 #define WD719X_START_CHANNEL2_3DMA       0x17
 200 #define WD719X_START_CHANNEL2_3DONE      0x01
 201 #define WD719X_START_CHANNEL2_3ABORT     0x20
 202
 203 /* 33C296 GPIO bits for EEPROM pins */
 204 #define WD719X_EE_DI    (1 << 1)
 205 #define WD719X_EE_CS    (1 << 2)
 206 #define WD719X_EE_CLK   (1 << 3)
 207 #define WD719X_EE_DO    (1 << 4)
 208
 209 /* EEPROM contents */
 210 struct wd719x_eeprom_header {
 211         u8 sig1;
 212         u8 sig2;
 213         u8 version;
 214         u8 checksum;
 215         u8 cfg_offset;
 216         u8 cfg_size;
 217         u8 setup_offset;
 218         u8 setup_size;
 219 } __packed;
 220
 221 #define WD719X_EE_SIG1          0
 222 #define WD719X_EE_SIG2          1
 223 #define WD719X_EE_VERSION       2
 224 #define WD719X_EE_CHECKSUM      3
 225 #define WD719X_EE_CFG_OFFSET    4
 226 #define WD719X_EE_CFG_SIZE      5
 227 #define WD719X_EE_SETUP_OFFSET  6
 228 #define WD719X_EE_SETUP_SIZE    7
 229
 230 #define WD719X_EE_SCSI_ID_MASK  0xf
 231
 232 /* SPIDER Host Parameters Block (=EEPROM configuration block) */
 233 struct wd719x_host_param {
 234         u8 ch_1_th;     /* FIFO threshold */
 235         u8 scsi_conf;   /* SCSI configuration */
 236         u8 own_scsi_id; /* controller SCSI ID */
 237         u8 sel_timeout; /* selection timeout*/
 238         u8 sleep_timer; /* seep timer */
 239         __le16 cdb_size;/* CDB size groups */
 240         __le16 tag_en;  /* Tag msg enables (ID 0-15) */
 241         u8 scsi_pad;    /* SCSI pad control */
 242         __le32 wide;    /* WIDE msg options (ID 0-15) */
 243         __le32 sync;    /* SYNC msg options (ID 0-15) */
 244         u8 soft_mask;   /* soft error mask */
 245         u8 unsol_mask;  /* unsolicited error mask */
 246 } __packed;
 247
 248 #endif /* _WD719X_H_ */