Lines Matching full:esp
2 /* esp_scsi.c: ESP SCSI driver.
33 #define DRV_MODULE_NAME "esp"
58 shost_printk(KERN_DEBUG, esp->host, f, ## a); \
63 shost_printk(KERN_DEBUG, esp->host, f, ## a); \
68 shost_printk(KERN_DEBUG, esp->host, f, ## a); \
73 shost_printk(KERN_DEBUG, esp->host, f, ## a); \
78 shost_printk(KERN_DEBUG, esp->host, f, ## a); \
83 shost_printk(KERN_DEBUG, esp->host, f, ## a); \
88 shost_printk(KERN_DEBUG, esp->host, f, ## a); \
93 shost_printk(KERN_DEBUG, esp->host, f, ## a); \
98 shost_printk(KERN_DEBUG, esp->host, f, ## a); \
103 shost_printk(KERN_DEBUG, esp->host, f, ## a); \
108 shost_printk(KERN_DEBUG, esp->host, f, ## a); \
113 shost_printk(KERN_DEBUG, esp->host, f, ## a); \
116 #define esp_read8(REG) esp->ops->esp_read8(esp, REG)
117 #define esp_write8(VAL,REG) esp->ops->esp_write8(esp, VAL, REG)
119 static void esp_log_fill_regs(struct esp *esp, in esp_log_fill_regs() argument
122 p->sreg = esp->sreg; in esp_log_fill_regs()
123 p->seqreg = esp->seqreg; in esp_log_fill_regs()
124 p->sreg2 = esp->sreg2; in esp_log_fill_regs()
125 p->ireg = esp->ireg; in esp_log_fill_regs()
126 p->select_state = esp->select_state; in esp_log_fill_regs()
127 p->event = esp->event; in esp_log_fill_regs()
130 void scsi_esp_cmd(struct esp *esp, u8 val) in scsi_esp_cmd() argument
133 int idx = esp->esp_event_cur; in scsi_esp_cmd()
135 p = &esp->esp_event_log[idx]; in scsi_esp_cmd()
138 esp_log_fill_regs(esp, p); in scsi_esp_cmd()
140 esp->esp_event_cur = (idx + 1) & (ESP_EVENT_LOG_SZ - 1); in scsi_esp_cmd()
147 static void esp_send_dma_cmd(struct esp *esp, int len, int max_len, int cmd) in esp_send_dma_cmd() argument
149 if (esp->flags & ESP_FLAG_USE_FIFO) { in esp_send_dma_cmd()
152 scsi_esp_cmd(esp, ESP_CMD_FLUSH); in esp_send_dma_cmd()
154 esp_write8(esp->command_block[i], ESP_FDATA); in esp_send_dma_cmd()
155 scsi_esp_cmd(esp, cmd); in esp_send_dma_cmd()
157 if (esp->rev == FASHME) in esp_send_dma_cmd()
158 scsi_esp_cmd(esp, ESP_CMD_FLUSH); in esp_send_dma_cmd()
160 esp->ops->send_dma_cmd(esp, esp->command_block_dma, in esp_send_dma_cmd()
165 static void esp_event(struct esp *esp, u8 val) in esp_event() argument
168 int idx = esp->esp_event_cur; in esp_event()
170 p = &esp->esp_event_log[idx]; in esp_event()
173 esp_log_fill_regs(esp, p); in esp_event()
175 esp->esp_event_cur = (idx + 1) & (ESP_EVENT_LOG_SZ - 1); in esp_event()
177 esp->event = val; in esp_event()
180 static void esp_dump_cmd_log(struct esp *esp) in esp_dump_cmd_log() argument
182 int idx = esp->esp_event_cur; in esp_dump_cmd_log()
185 shost_printk(KERN_INFO, esp->host, "Dumping command log\n"); in esp_dump_cmd_log()
187 struct esp_event_ent *p = &esp->esp_event_log[idx]; in esp_dump_cmd_log()
189 shost_printk(KERN_INFO, esp->host, in esp_dump_cmd_log()
201 static void esp_flush_fifo(struct esp *esp) in esp_flush_fifo() argument
203 scsi_esp_cmd(esp, ESP_CMD_FLUSH); in esp_flush_fifo()
204 if (esp->rev == ESP236) { in esp_flush_fifo()
209 shost_printk(KERN_ALERT, esp->host, in esp_flush_fifo()
218 static void hme_read_fifo(struct esp *esp) in hme_read_fifo() argument
224 esp->fifo[idx++] = esp_read8(ESP_FDATA); in hme_read_fifo()
225 esp->fifo[idx++] = esp_read8(ESP_FDATA); in hme_read_fifo()
227 if (esp->sreg2 & ESP_STAT2_F1BYTE) { in hme_read_fifo()
229 esp->fifo[idx++] = esp_read8(ESP_FDATA); in hme_read_fifo()
230 scsi_esp_cmd(esp, ESP_CMD_FLUSH); in hme_read_fifo()
232 esp->fifo_cnt = idx; in hme_read_fifo()
235 static void esp_set_all_config3(struct esp *esp, u8 val) in esp_set_all_config3() argument
240 esp->target[i].esp_config3 = val; in esp_set_all_config3()
243 /* Reset the ESP chip, _not_ the SCSI bus. */
244 static void esp_reset_esp(struct esp *esp) in esp_reset_esp() argument
246 /* Now reset the ESP chip */ in esp_reset_esp()
247 scsi_esp_cmd(esp, ESP_CMD_RC); in esp_reset_esp()
248 scsi_esp_cmd(esp, ESP_CMD_NULL | ESP_CMD_DMA); in esp_reset_esp()
249 if (esp->rev == FAST) in esp_reset_esp()
251 scsi_esp_cmd(esp, ESP_CMD_NULL | ESP_CMD_DMA); in esp_reset_esp()
254 * the ID-code for a fast ESP chip variants. in esp_reset_esp()
256 esp->max_period = ((35 * esp->ccycle) / 1000); in esp_reset_esp()
257 if (esp->rev == FAST) { in esp_reset_esp()
261 esp->rev = FAS236; in esp_reset_esp()
263 esp->rev = FASHME; /* Version is usually '5'. */ in esp_reset_esp()
265 esp->rev = FSC; in esp_reset_esp()
269 esp->rev = FAS100A; in esp_reset_esp()
271 esp->min_period = ((4 * esp->ccycle) / 1000); in esp_reset_esp()
273 esp->min_period = ((5 * esp->ccycle) / 1000); in esp_reset_esp()
275 if (esp->rev == FAS236) { in esp_reset_esp()
284 esp->rev = PCSCSI; in esp_reset_esp()
285 esp_write8(esp->config4, ESP_CFG4); in esp_reset_esp()
288 esp->max_period = (esp->max_period + 3)>>2; in esp_reset_esp()
289 esp->min_period = (esp->min_period + 3)>>2; in esp_reset_esp()
291 esp_write8(esp->config1, ESP_CFG1); in esp_reset_esp()
292 switch (esp->rev) { in esp_reset_esp()
298 esp_write8(esp->config2, ESP_CFG2); in esp_reset_esp()
303 esp_write8(esp->config2, ESP_CFG2); in esp_reset_esp()
304 esp->prev_cfg3 = esp->target[0].esp_config3; in esp_reset_esp()
305 esp_write8(esp->prev_cfg3, ESP_CFG3); in esp_reset_esp()
309 esp->config2 |= (ESP_CONFIG2_HME32 | ESP_CONFIG2_HMEFENAB); in esp_reset_esp()
315 esp_write8(esp->config2, ESP_CFG2); in esp_reset_esp()
316 if (esp->rev == FASHME) { in esp_reset_esp()
317 u8 cfg3 = esp->target[0].esp_config3; in esp_reset_esp()
320 if (esp->scsi_id >= 8) in esp_reset_esp()
322 esp_set_all_config3(esp, cfg3); in esp_reset_esp()
324 u32 cfg3 = esp->target[0].esp_config3; in esp_reset_esp()
327 esp_set_all_config3(esp, cfg3); in esp_reset_esp()
329 esp->prev_cfg3 = esp->target[0].esp_config3; in esp_reset_esp()
330 esp_write8(esp->prev_cfg3, ESP_CFG3); in esp_reset_esp()
331 if (esp->rev == FASHME) { in esp_reset_esp()
332 esp->radelay = 80; in esp_reset_esp()
334 if (esp->flags & ESP_FLAG_DIFFERENTIAL) in esp_reset_esp()
335 esp->radelay = 0; in esp_reset_esp()
337 esp->radelay = 96; in esp_reset_esp()
343 esp_write8(esp->config2, ESP_CFG2); in esp_reset_esp()
344 esp_set_all_config3(esp, in esp_reset_esp()
345 (esp->target[0].esp_config3 | in esp_reset_esp()
347 esp->prev_cfg3 = esp->target[0].esp_config3; in esp_reset_esp()
348 esp_write8(esp->prev_cfg3, ESP_CFG3); in esp_reset_esp()
349 esp->radelay = 32; in esp_reset_esp()
357 esp_write8(esp->cfact, ESP_CFACT); in esp_reset_esp()
359 esp->prev_stp = 0; in esp_reset_esp()
360 esp_write8(esp->prev_stp, ESP_STP); in esp_reset_esp()
362 esp->prev_soff = 0; in esp_reset_esp()
363 esp_write8(esp->prev_soff, ESP_SOFF); in esp_reset_esp()
365 esp_write8(esp->neg_defp, ESP_TIMEO); in esp_reset_esp()
372 static void esp_map_dma(struct esp *esp, struct scsi_cmnd *cmd) in esp_map_dma() argument
382 if (esp->flags & ESP_FLAG_NO_DMA_MAP) { in esp_map_dma()
431 static void esp_advance_dma(struct esp *esp, struct esp_cmd_entry *ent, in esp_advance_dma() argument
444 shost_printk(KERN_ERR, esp->host, in esp_advance_dma()
446 shost_printk(KERN_ERR, esp->host, in esp_advance_dma()
459 static void esp_unmap_dma(struct esp *esp, struct scsi_cmnd *cmd) in esp_unmap_dma() argument
461 if (!(esp->flags & ESP_FLAG_NO_DMA_MAP)) in esp_unmap_dma()
465 static void esp_save_pointers(struct esp *esp, struct esp_cmd_entry *ent) in esp_save_pointers() argument
480 static void esp_restore_pointers(struct esp *esp, struct esp_cmd_entry *ent) in esp_restore_pointers() argument
495 static void esp_write_tgt_config3(struct esp *esp, int tgt) in esp_write_tgt_config3() argument
497 if (esp->rev > ESP100A) { in esp_write_tgt_config3()
498 u8 val = esp->target[tgt].esp_config3; in esp_write_tgt_config3()
500 if (val != esp->prev_cfg3) { in esp_write_tgt_config3()
501 esp->prev_cfg3 = val; in esp_write_tgt_config3()
507 static void esp_write_tgt_sync(struct esp *esp, int tgt) in esp_write_tgt_sync() argument
509 u8 off = esp->target[tgt].esp_offset; in esp_write_tgt_sync()
510 u8 per = esp->target[tgt].esp_period; in esp_write_tgt_sync()
512 if (off != esp->prev_soff) { in esp_write_tgt_sync()
513 esp->prev_soff = off; in esp_write_tgt_sync()
516 if (per != esp->prev_stp) { in esp_write_tgt_sync()
517 esp->prev_stp = per; in esp_write_tgt_sync()
522 static u32 esp_dma_length_limit(struct esp *esp, u32 dma_addr, u32 dma_len) in esp_dma_length_limit() argument
524 if (esp->rev == FASHME) { in esp_dma_length_limit()
531 /* ESP chip limits other variants by 16-bits of transfer in esp_dma_length_limit()
630 static void esp_map_sense(struct esp *esp, struct esp_cmd_entry *ent) in esp_map_sense() argument
633 if (esp->flags & ESP_FLAG_NO_DMA_MAP) { in esp_map_sense()
638 ent->sense_dma = dma_map_single(esp->dev, ent->sense_ptr, in esp_map_sense()
642 static void esp_unmap_sense(struct esp *esp, struct esp_cmd_entry *ent) in esp_unmap_sense() argument
644 if (!(esp->flags & ESP_FLAG_NO_DMA_MAP)) in esp_unmap_sense()
645 dma_unmap_single(esp->dev, ent->sense_dma, in esp_unmap_sense()
657 static void esp_autosense(struct esp *esp, struct esp_cmd_entry *ent) in esp_autosense() argument
671 esp_map_sense(esp, ent); in esp_autosense()
675 esp->active_cmd = ent; in esp_autosense()
677 p = esp->command_block; in esp_autosense()
678 esp->msg_out_len = 0; in esp_autosense()
689 esp->select_state = ESP_SELECT_BASIC; in esp_autosense()
692 if (esp->rev == FASHME) in esp_autosense()
696 esp_write_tgt_sync(esp, tgt); in esp_autosense()
697 esp_write_tgt_config3(esp, tgt); in esp_autosense()
699 val = (p - esp->command_block); in esp_autosense()
701 esp_send_dma_cmd(esp, val, 16, ESP_CMD_SELA); in esp_autosense()
704 static struct esp_cmd_entry *find_and_prep_issuable_command(struct esp *esp) in find_and_prep_issuable_command() argument
708 list_for_each_entry(ent, &esp->queued_cmds, list) { in find_and_prep_issuable_command()
735 static void esp_maybe_execute_command(struct esp *esp) in esp_maybe_execute_command() argument
746 if (esp->active_cmd || in esp_maybe_execute_command()
747 (esp->flags & ESP_FLAG_RESETTING)) in esp_maybe_execute_command()
750 ent = find_and_prep_issuable_command(esp); in esp_maybe_execute_command()
755 esp_autosense(esp, ent); in esp_maybe_execute_command()
763 tp = &esp->target[tgt]; in esp_maybe_execute_command()
765 list_move(&ent->list, &esp->active_cmds); in esp_maybe_execute_command()
767 esp->active_cmd = ent; in esp_maybe_execute_command()
769 esp_map_dma(esp, cmd); in esp_maybe_execute_command()
770 esp_save_pointers(esp, ent); in esp_maybe_execute_command()
775 p = esp->command_block; in esp_maybe_execute_command()
777 esp->msg_out_len = 0; in esp_maybe_execute_command()
798 if (esp->rev == FASHME && esp_need_to_nego_wide(tp)) { in esp_maybe_execute_command()
799 esp->msg_out_len = in esp_maybe_execute_command()
800 spi_populate_width_msg(&esp->msg_out[0], in esp_maybe_execute_command()
805 esp->msg_out_len = in esp_maybe_execute_command()
806 spi_populate_sync_msg(&esp->msg_out[0], in esp_maybe_execute_command()
815 if (esp->msg_out_len) in esp_maybe_execute_command()
822 if (ent->tag[0] && esp->rev == ESP100) { in esp_maybe_execute_command()
830 esp->cmd_bytes_left = cmd->cmd_len; in esp_maybe_execute_command()
831 esp->cmd_bytes_ptr = &cmd->cmnd[0]; in esp_maybe_execute_command()
834 for (i = esp->msg_out_len - 1; in esp_maybe_execute_command()
836 esp->msg_out[i + 2] = esp->msg_out[i]; in esp_maybe_execute_command()
837 esp->msg_out[0] = ent->tag[0]; in esp_maybe_execute_command()
838 esp->msg_out[1] = ent->tag[1]; in esp_maybe_execute_command()
839 esp->msg_out_len += 2; in esp_maybe_execute_command()
843 esp->select_state = ESP_SELECT_MSGOUT; in esp_maybe_execute_command()
856 esp->select_state = ESP_SELECT_BASIC; in esp_maybe_execute_command()
859 if (esp->rev == FASHME) in esp_maybe_execute_command()
863 esp_write_tgt_sync(esp, tgt); in esp_maybe_execute_command()
864 esp_write_tgt_config3(esp, tgt); in esp_maybe_execute_command()
866 val = (p - esp->command_block); in esp_maybe_execute_command()
869 printk("ESP: tgt[%d] lun[%d] scsi_cmd [ ", tgt, lun); in esp_maybe_execute_command()
875 esp_send_dma_cmd(esp, val, 16, start_cmd); in esp_maybe_execute_command()
878 static struct esp_cmd_entry *esp_get_ent(struct esp *esp) in esp_get_ent() argument
880 struct list_head *head = &esp->esp_cmd_pool; in esp_get_ent()
893 static void esp_put_ent(struct esp *esp, struct esp_cmd_entry *ent) in esp_put_ent() argument
895 list_add(&ent->list, &esp->esp_cmd_pool); in esp_put_ent()
898 static void esp_cmd_is_done(struct esp *esp, struct esp_cmd_entry *ent, in esp_cmd_is_done() argument
905 esp->active_cmd = NULL; in esp_cmd_is_done()
906 esp_unmap_dma(esp, cmd); in esp_cmd_is_done()
919 esp_unmap_sense(esp, ent); in esp_cmd_is_done()
931 printk("esp%d: tgt[%d] lun[%d] AUTO SENSE[ ", in esp_cmd_is_done()
932 esp->host->unique_id, tgt, lun); in esp_cmd_is_done()
942 esp_put_ent(esp, ent); in esp_cmd_is_done()
944 esp_maybe_execute_command(esp); in esp_cmd_is_done()
947 static void esp_event_queue_full(struct esp *esp, struct esp_cmd_entry *ent) in esp_event_queue_full() argument
958 struct esp *esp = shost_priv(dev->host); in esp_queuecommand_lck() local
962 ent = esp_get_ent(esp); in esp_queuecommand_lck()
973 list_add_tail(&ent->list, &esp->queued_cmds); in esp_queuecommand_lck()
975 esp_maybe_execute_command(esp); in esp_queuecommand_lck()
982 static int esp_check_gross_error(struct esp *esp) in DEF_SCSI_QCMD()
984 if (esp->sreg & ESP_STAT_SPAM) { in DEF_SCSI_QCMD()
991 shost_printk(KERN_ERR, esp->host, in DEF_SCSI_QCMD()
992 "Gross error sreg[%02x]\n", esp->sreg); in DEF_SCSI_QCMD()
999 static int esp_check_spur_intr(struct esp *esp) in esp_check_spur_intr() argument
1001 switch (esp->rev) { in esp_check_spur_intr()
1007 esp->sreg &= ~ESP_STAT_INTR; in esp_check_spur_intr()
1011 if (!(esp->sreg & ESP_STAT_INTR)) { in esp_check_spur_intr()
1012 if (esp->ireg & ESP_INTR_SR) in esp_check_spur_intr()
1016 * ESP is not, the only possibility is a DMA error. in esp_check_spur_intr()
1018 if (!esp->ops->dma_error(esp)) { in esp_check_spur_intr()
1019 shost_printk(KERN_ERR, esp->host, in esp_check_spur_intr()
1021 esp->sreg); in esp_check_spur_intr()
1025 shost_printk(KERN_ERR, esp->host, "DMA error\n"); in esp_check_spur_intr()
1036 static void esp_schedule_reset(struct esp *esp) in esp_schedule_reset() argument
1040 esp->flags |= ESP_FLAG_RESETTING; in esp_schedule_reset()
1041 esp_event(esp, ESP_EVENT_RESET); in esp_schedule_reset()
1048 static struct esp_cmd_entry *esp_reconnect_with_tag(struct esp *esp, in esp_reconnect_with_tag() argument
1055 shost_printk(KERN_ERR, esp->host, in esp_reconnect_with_tag()
1063 if (esp->ops->irq_pending(esp)) in esp_reconnect_with_tag()
1067 shost_printk(KERN_ERR, esp->host, in esp_reconnect_with_tag()
1072 esp->sreg = esp_read8(ESP_STATUS); in esp_reconnect_with_tag()
1073 esp->ireg = esp_read8(ESP_INTRPT); in esp_reconnect_with_tag()
1076 i, esp->ireg, esp->sreg); in esp_reconnect_with_tag()
1078 if (esp->ireg & ESP_INTR_DC) { in esp_reconnect_with_tag()
1079 shost_printk(KERN_ERR, esp->host, in esp_reconnect_with_tag()
1084 if ((esp->sreg & ESP_STAT_PMASK) != ESP_MIP) { in esp_reconnect_with_tag()
1085 shost_printk(KERN_ERR, esp->host, in esp_reconnect_with_tag()
1086 "Reconnect, not MIP sreg[%02x].\n", esp->sreg); in esp_reconnect_with_tag()
1091 esp->command_block[0] = 0xff; in esp_reconnect_with_tag()
1092 esp->command_block[1] = 0xff; in esp_reconnect_with_tag()
1093 esp->ops->send_dma_cmd(esp, esp->command_block_dma, in esp_reconnect_with_tag()
1097 scsi_esp_cmd(esp, ESP_CMD_MOK); in esp_reconnect_with_tag()
1100 if (esp->ops->irq_pending(esp)) { in esp_reconnect_with_tag()
1101 esp->sreg = esp_read8(ESP_STATUS); in esp_reconnect_with_tag()
1102 esp->ireg = esp_read8(ESP_INTRPT); in esp_reconnect_with_tag()
1103 if (esp->ireg & ESP_INTR_FDONE) in esp_reconnect_with_tag()
1109 shost_printk(KERN_ERR, esp->host, "Reconnect IRQ2 timeout\n"); in esp_reconnect_with_tag()
1112 esp->ops->dma_drain(esp); in esp_reconnect_with_tag()
1113 esp->ops->dma_invalidate(esp); in esp_reconnect_with_tag()
1116 i, esp->ireg, esp->sreg, in esp_reconnect_with_tag()
1117 esp->command_block[0], in esp_reconnect_with_tag()
1118 esp->command_block[1]); in esp_reconnect_with_tag()
1120 if (esp->command_block[0] < SIMPLE_QUEUE_TAG || in esp_reconnect_with_tag()
1121 esp->command_block[0] > ORDERED_QUEUE_TAG) { in esp_reconnect_with_tag()
1122 shost_printk(KERN_ERR, esp->host, in esp_reconnect_with_tag()
1124 esp->command_block[0]); in esp_reconnect_with_tag()
1128 ent = lp->tagged_cmds[esp->command_block[1]]; in esp_reconnect_with_tag()
1130 shost_printk(KERN_ERR, esp->host, in esp_reconnect_with_tag()
1132 esp->command_block[1]); in esp_reconnect_with_tag()
1139 static int esp_reconnect(struct esp *esp) in esp_reconnect() argument
1147 BUG_ON(esp->active_cmd); in esp_reconnect()
1148 if (esp->rev == FASHME) { in esp_reconnect()
1152 target = esp->fifo[0]; in esp_reconnect()
1153 lun = esp->fifo[1] & 0x7; in esp_reconnect()
1160 * see the ID of the ESP and the one reconnecting target in esp_reconnect()
1163 if (!(bits & esp->scsi_id_mask)) in esp_reconnect()
1165 bits &= ~esp->scsi_id_mask; in esp_reconnect()
1172 scsi_esp_cmd(esp, ESP_CMD_FLUSH); in esp_reconnect()
1173 if (esp->rev == ESP100) { in esp_reconnect()
1183 scsi_esp_cmd(esp, ESP_CMD_NULL); in esp_reconnect()
1186 esp_write_tgt_sync(esp, target); in esp_reconnect()
1187 esp_write_tgt_config3(esp, target); in esp_reconnect()
1189 scsi_esp_cmd(esp, ESP_CMD_MOK); in esp_reconnect()
1191 if (esp->rev == FASHME) in esp_reconnect()
1195 tp = &esp->target[target]; in esp_reconnect()
1198 shost_printk(KERN_ERR, esp->host, in esp_reconnect()
1207 ent = esp_reconnect_with_tag(esp, lp); in esp_reconnect()
1212 esp->active_cmd = ent; in esp_reconnect()
1214 esp_event(esp, ESP_EVENT_CHECK_PHASE); in esp_reconnect()
1215 esp_restore_pointers(esp, ent); in esp_reconnect()
1216 esp->flags |= ESP_FLAG_QUICKIRQ_CHECK; in esp_reconnect()
1220 esp_schedule_reset(esp); in esp_reconnect()
1224 static int esp_finish_select(struct esp *esp) in esp_finish_select() argument
1230 esp->select_state = ESP_SELECT_NONE; in esp_finish_select()
1232 esp->seqreg = esp_read8(ESP_SSTEP) & ESP_STEP_VBITS; in esp_finish_select()
1233 ent = esp->active_cmd; in esp_finish_select()
1236 if (esp->ops->dma_error(esp)) { in esp_finish_select()
1240 esp_schedule_reset(esp); in esp_finish_select()
1241 esp_cmd_is_done(esp, ent, cmd, DID_ERROR); in esp_finish_select()
1245 esp->ops->dma_invalidate(esp); in esp_finish_select()
1247 if (esp->ireg == (ESP_INTR_RSEL | ESP_INTR_FDONE)) { in esp_finish_select()
1248 struct esp_target_data *tp = &esp->target[cmd->device->id]; in esp_finish_select()
1255 esp_unmap_dma(esp, cmd); in esp_finish_select()
1258 esp->cmd_bytes_ptr = NULL; in esp_finish_select()
1259 esp->cmd_bytes_left = 0; in esp_finish_select()
1261 esp_unmap_sense(esp, ent); in esp_finish_select()
1267 list_move(&ent->list, &esp->queued_cmds); in esp_finish_select()
1268 esp->active_cmd = NULL; in esp_finish_select()
1276 if (esp->ireg == ESP_INTR_DC) { in esp_finish_select()
1283 esp->target[dev->id].flags |= ESP_TGT_CHECK_NEGO; in esp_finish_select()
1285 scsi_esp_cmd(esp, ESP_CMD_ESEL); in esp_finish_select()
1286 esp_cmd_is_done(esp, ent, cmd, DID_BAD_TARGET); in esp_finish_select()
1290 if (esp->ireg == (ESP_INTR_FDONE | ESP_INTR_BSERV)) { in esp_finish_select()
1294 if (esp->rev <= ESP236) { in esp_finish_select()
1297 scsi_esp_cmd(esp, ESP_CMD_NULL); in esp_finish_select()
1300 (!esp->prev_soff || in esp_finish_select()
1301 ((esp->sreg & ESP_STAT_PMASK) != ESP_DIP))) in esp_finish_select()
1302 esp_flush_fifo(esp); in esp_finish_select()
1308 esp_event(esp, ESP_EVENT_CHECK_PHASE); in esp_finish_select()
1312 shost_printk(KERN_INFO, esp->host, in esp_finish_select()
1313 "Unexpected selection completion ireg[%x]\n", esp->ireg); in esp_finish_select()
1314 esp_schedule_reset(esp); in esp_finish_select()
1318 static int esp_data_bytes_sent(struct esp *esp, struct esp_cmd_entry *ent, in esp_data_bytes_sent() argument
1324 if (esp->prev_cfg3 & ESP_CONFIG3_EWIDE) in esp_data_bytes_sent()
1328 if (!(esp->sreg & ESP_STAT_TCNT)) { in esp_data_bytes_sent()
1331 if (esp->rev == FASHME) in esp_data_bytes_sent()
1333 if (esp->rev == PCSCSI && (esp->config2 & ESP_CONFIG2_FENAB)) in esp_data_bytes_sent()
1337 bytes_sent = esp->data_dma_len; in esp_data_bytes_sent()
1339 bytes_sent -= esp->send_cmd_residual; in esp_data_bytes_sent()
1374 if (!esp->prev_soff) { in esp_data_bytes_sent()
1378 if (esp->rev == ESP100) { in esp_data_bytes_sent()
1392 esp->sreg = esp_read8(ESP_STATUS); in esp_data_bytes_sent()
1393 phase = esp->sreg & ESP_STAT_PMASK; in esp_data_bytes_sent()
1407 esp_flush_fifo(esp); in esp_data_bytes_sent()
1412 static void esp_setsync(struct esp *esp, struct esp_target_data *tp, in esp_setsync() argument
1422 esp_soff |= esp->radelay; in esp_setsync()
1423 if (esp->rev >= FAS236) { in esp_setsync()
1425 if (esp->rev >= FAS100A) in esp_setsync()
1429 if (esp->rev == FASHME) in esp_setsync()
1430 esp_soff &= ~esp->radelay; in esp_setsync()
1435 esp->prev_cfg3 = tp->esp_config3; in esp_setsync()
1436 esp_write8(esp->prev_cfg3, ESP_CFG3); in esp_setsync()
1440 tp->esp_period = esp->prev_stp = esp_stp; in esp_setsync()
1441 tp->esp_offset = esp->prev_soff = esp_soff; in esp_setsync()
1451 static void esp_msgin_reject(struct esp *esp) in esp_msgin_reject() argument
1453 struct esp_cmd_entry *ent = esp->active_cmd; in esp_msgin_reject()
1459 tp = &esp->target[tgt]; in esp_msgin_reject()
1466 scsi_esp_cmd(esp, ESP_CMD_RATN); in esp_msgin_reject()
1468 esp->msg_out_len = in esp_msgin_reject()
1469 spi_populate_sync_msg(&esp->msg_out[0], in esp_msgin_reject()
1473 scsi_esp_cmd(esp, ESP_CMD_SATN); in esp_msgin_reject()
1482 esp_setsync(esp, tp, 0, 0, 0, 0); in esp_msgin_reject()
1483 scsi_esp_cmd(esp, ESP_CMD_RATN); in esp_msgin_reject()
1487 shost_printk(KERN_INFO, esp->host, "Unexpected MESSAGE REJECT\n"); in esp_msgin_reject()
1488 esp_schedule_reset(esp); in esp_msgin_reject()
1491 static void esp_msgin_sdtr(struct esp *esp, struct esp_target_data *tp) in esp_msgin_sdtr() argument
1493 u8 period = esp->msg_in[3]; in esp_msgin_sdtr()
1494 u8 offset = esp->msg_in[4]; in esp_msgin_sdtr()
1506 if (period > esp->max_period) { in esp_msgin_sdtr()
1510 if (period < esp->min_period) in esp_msgin_sdtr()
1513 one_clock = esp->ccycle / 1000; in esp_msgin_sdtr()
1515 if (stp && esp->rev >= FAS236) { in esp_msgin_sdtr()
1523 esp_setsync(esp, tp, period, offset, stp, offset); in esp_msgin_sdtr()
1527 esp->msg_out[0] = MESSAGE_REJECT; in esp_msgin_sdtr()
1528 esp->msg_out_len = 1; in esp_msgin_sdtr()
1529 scsi_esp_cmd(esp, ESP_CMD_SATN); in esp_msgin_sdtr()
1535 esp->msg_out_len = in esp_msgin_sdtr()
1536 spi_populate_sync_msg(&esp->msg_out[0], in esp_msgin_sdtr()
1539 scsi_esp_cmd(esp, ESP_CMD_SATN); in esp_msgin_sdtr()
1542 static void esp_msgin_wdtr(struct esp *esp, struct esp_target_data *tp) in esp_msgin_wdtr() argument
1544 int size = 8 << esp->msg_in[3]; in esp_msgin_wdtr()
1547 if (esp->rev != FASHME) in esp_msgin_wdtr()
1565 esp->prev_cfg3 = cfg3; in esp_msgin_wdtr()
1574 scsi_esp_cmd(esp, ESP_CMD_RATN); in esp_msgin_wdtr()
1576 esp->msg_out_len = in esp_msgin_wdtr()
1577 spi_populate_sync_msg(&esp->msg_out[0], in esp_msgin_wdtr()
1581 scsi_esp_cmd(esp, ESP_CMD_SATN); in esp_msgin_wdtr()
1586 esp->msg_out[0] = MESSAGE_REJECT; in esp_msgin_wdtr()
1587 esp->msg_out_len = 1; in esp_msgin_wdtr()
1588 scsi_esp_cmd(esp, ESP_CMD_SATN); in esp_msgin_wdtr()
1591 static void esp_msgin_extended(struct esp *esp) in esp_msgin_extended() argument
1593 struct esp_cmd_entry *ent = esp->active_cmd; in esp_msgin_extended()
1598 tp = &esp->target[tgt]; in esp_msgin_extended()
1599 if (esp->msg_in[2] == EXTENDED_SDTR) { in esp_msgin_extended()
1600 esp_msgin_sdtr(esp, tp); in esp_msgin_extended()
1603 if (esp->msg_in[2] == EXTENDED_WDTR) { in esp_msgin_extended()
1604 esp_msgin_wdtr(esp, tp); in esp_msgin_extended()
1608 shost_printk(KERN_INFO, esp->host, in esp_msgin_extended()
1609 "Unexpected extended msg type %x\n", esp->msg_in[2]); in esp_msgin_extended()
1611 esp->msg_out[0] = MESSAGE_REJECT; in esp_msgin_extended()
1612 esp->msg_out_len = 1; in esp_msgin_extended()
1613 scsi_esp_cmd(esp, ESP_CMD_SATN); in esp_msgin_extended()
1619 static int esp_msgin_process(struct esp *esp) in esp_msgin_process() argument
1621 u8 msg0 = esp->msg_in[0]; in esp_msgin_process()
1622 int len = esp->msg_in_len; in esp_msgin_process()
1626 shost_printk(KERN_INFO, esp->host, in esp_msgin_process()
1635 if (len < esp->msg_in[1] + 2) in esp_msgin_process()
1637 esp_msgin_extended(esp); in esp_msgin_process()
1646 if (esp->msg_in[1] != 1) in esp_msgin_process()
1649 ent = esp->active_cmd; in esp_msgin_process()
1663 esp_restore_pointers(esp, esp->active_cmd); in esp_msgin_process()
1666 esp_save_pointers(esp, esp->active_cmd); in esp_msgin_process()
1671 struct esp_cmd_entry *ent = esp->active_cmd; in esp_msgin_process()
1674 esp_event(esp, ESP_EVENT_FREE_BUS); in esp_msgin_process()
1675 esp->flags |= ESP_FLAG_QUICKIRQ_CHECK; in esp_msgin_process()
1679 esp_msgin_reject(esp); in esp_msgin_process()
1684 esp->msg_out[0] = MESSAGE_REJECT; in esp_msgin_process()
1685 esp->msg_out_len = 1; in esp_msgin_process()
1686 scsi_esp_cmd(esp, ESP_CMD_SATN); in esp_msgin_process()
1691 static int esp_process_event(struct esp *esp) in esp_process_event() argument
1698 esp->event, esp->sreg & ESP_STAT_PMASK); in esp_process_event()
1699 switch (esp->event) { in esp_process_event()
1701 switch (esp->sreg & ESP_STAT_PMASK) { in esp_process_event()
1703 esp_event(esp, ESP_EVENT_DATA_OUT); in esp_process_event()
1706 esp_event(esp, ESP_EVENT_DATA_IN); in esp_process_event()
1709 esp_flush_fifo(esp); in esp_process_event()
1710 scsi_esp_cmd(esp, ESP_CMD_ICCSEQ); in esp_process_event()
1711 esp_event(esp, ESP_EVENT_STATUS); in esp_process_event()
1712 esp->flags |= ESP_FLAG_QUICKIRQ_CHECK; in esp_process_event()
1716 esp_event(esp, ESP_EVENT_MSGOUT); in esp_process_event()
1720 esp_event(esp, ESP_EVENT_MSGIN); in esp_process_event()
1724 esp_event(esp, ESP_EVENT_CMD_START); in esp_process_event()
1728 shost_printk(KERN_INFO, esp->host, in esp_process_event()
1730 esp->sreg); in esp_process_event()
1731 esp_schedule_reset(esp); in esp_process_event()
1741 struct esp_cmd_entry *ent = esp->active_cmd; in esp_process_event()
1746 if (esp->rev == ESP100) in esp_process_event()
1747 scsi_esp_cmd(esp, ESP_CMD_NULL); in esp_process_event()
1754 if (esp->ops->dma_length_limit) in esp_process_event()
1755 dma_len = esp->ops->dma_length_limit(esp, dma_addr, in esp_process_event()
1758 dma_len = esp_dma_length_limit(esp, dma_addr, dma_len); in esp_process_event()
1760 esp->data_dma_len = dma_len; in esp_process_event()
1763 shost_printk(KERN_ERR, esp->host, in esp_process_event()
1765 shost_printk(KERN_ERR, esp->host, in esp_process_event()
1769 esp_schedule_reset(esp); in esp_process_event()
1776 esp->ops->send_dma_cmd(esp, dma_addr, dma_len, dma_len, in esp_process_event()
1778 esp_event(esp, ESP_EVENT_DATA_DONE); in esp_process_event()
1782 struct esp_cmd_entry *ent = esp->active_cmd; in esp_process_event()
1786 if (esp->ops->dma_error(esp)) { in esp_process_event()
1787 shost_printk(KERN_INFO, esp->host, in esp_process_event()
1789 esp_schedule_reset(esp); in esp_process_event()
1796 esp->ops->dma_drain(esp); in esp_process_event()
1798 esp->ops->dma_invalidate(esp); in esp_process_event()
1800 if (esp->ireg != ESP_INTR_BSERV) { in esp_process_event()
1804 shost_printk(KERN_INFO, esp->host, in esp_process_event()
1806 esp_schedule_reset(esp); in esp_process_event()
1810 bytes_sent = esp_data_bytes_sent(esp, ent, cmd); in esp_process_event()
1817 esp_schedule_reset(esp); in esp_process_event()
1821 esp_advance_dma(esp, ent, cmd, bytes_sent); in esp_process_event()
1822 esp_event(esp, ESP_EVENT_CHECK_PHASE); in esp_process_event()
1827 struct esp_cmd_entry *ent = esp->active_cmd; in esp_process_event()
1829 if (esp->ireg & ESP_INTR_FDONE) { in esp_process_event()
1832 scsi_esp_cmd(esp, ESP_CMD_MOK); in esp_process_event()
1833 } else if (esp->ireg == ESP_INTR_BSERV) { in esp_process_event()
1836 esp_event(esp, ESP_EVENT_MSGIN); in esp_process_event()
1841 shost_printk(KERN_INFO, esp->host, in esp_process_event()
1844 esp_schedule_reset(esp); in esp_process_event()
1848 esp_event(esp, ESP_EVENT_FREE_BUS); in esp_process_event()
1849 esp->flags |= ESP_FLAG_QUICKIRQ_CHECK; in esp_process_event()
1853 struct esp_cmd_entry *ent = esp->active_cmd; in esp_process_event()
1858 scsi_esp_cmd(esp, ESP_CMD_ESEL); in esp_process_event()
1864 esp_event_queue_full(esp, ent); in esp_process_event()
1869 esp_autosense(esp, ent); in esp_process_event()
1871 esp_cmd_is_done(esp, ent, cmd, DID_OK); in esp_process_event()
1878 esp->active_cmd = NULL; in esp_process_event()
1879 esp_maybe_execute_command(esp); in esp_process_event()
1881 shost_printk(KERN_INFO, esp->host, in esp_process_event()
1884 esp_schedule_reset(esp); in esp_process_event()
1887 if (esp->active_cmd) in esp_process_event()
1888 esp->flags |= ESP_FLAG_QUICKIRQ_CHECK; in esp_process_event()
1892 scsi_esp_cmd(esp, ESP_CMD_FLUSH); in esp_process_event()
1896 printk("ESP: Sending message [ "); in esp_process_event()
1897 for (i = 0; i < esp->msg_out_len; i++) in esp_process_event()
1898 printk("%02x ", esp->msg_out[i]); in esp_process_event()
1902 if (esp->rev == FASHME) { in esp_process_event()
1906 for (i = 0; i < esp->msg_out_len; i++) { in esp_process_event()
1907 esp_write8(esp->msg_out[i], ESP_FDATA); in esp_process_event()
1910 scsi_esp_cmd(esp, ESP_CMD_TI); in esp_process_event()
1912 if (esp->msg_out_len == 1) { in esp_process_event()
1913 esp_write8(esp->msg_out[0], ESP_FDATA); in esp_process_event()
1914 scsi_esp_cmd(esp, ESP_CMD_TI); in esp_process_event()
1915 } else if (esp->flags & ESP_FLAG_USE_FIFO) { in esp_process_event()
1916 for (i = 0; i < esp->msg_out_len; i++) in esp_process_event()
1917 esp_write8(esp->msg_out[i], ESP_FDATA); in esp_process_event()
1918 scsi_esp_cmd(esp, ESP_CMD_TI); in esp_process_event()
1921 memcpy(esp->command_block, in esp_process_event()
1922 esp->msg_out, in esp_process_event()
1923 esp->msg_out_len); in esp_process_event()
1925 esp->ops->send_dma_cmd(esp, in esp_process_event()
1926 esp->command_block_dma, in esp_process_event()
1927 esp->msg_out_len, in esp_process_event()
1928 esp->msg_out_len, in esp_process_event()
1933 esp_event(esp, ESP_EVENT_MSGOUT_DONE); in esp_process_event()
1937 if (esp->rev == FASHME) { in esp_process_event()
1938 scsi_esp_cmd(esp, ESP_CMD_FLUSH); in esp_process_event()
1940 if (esp->msg_out_len > 1) in esp_process_event()
1941 esp->ops->dma_invalidate(esp); in esp_process_event()
1946 if (!(esp->ireg & ESP_INTR_DC)) in esp_process_event()
1947 scsi_esp_cmd(esp, ESP_CMD_NULL); in esp_process_event()
1950 esp->msg_out_len = 0; in esp_process_event()
1952 esp_event(esp, ESP_EVENT_CHECK_PHASE); in esp_process_event()
1955 if (esp->ireg & ESP_INTR_BSERV) { in esp_process_event()
1956 if (esp->rev == FASHME) { in esp_process_event()
1959 scsi_esp_cmd(esp, ESP_CMD_FLUSH); in esp_process_event()
1961 scsi_esp_cmd(esp, ESP_CMD_FLUSH); in esp_process_event()
1962 if (esp->rev == ESP100) in esp_process_event()
1963 scsi_esp_cmd(esp, ESP_CMD_NULL); in esp_process_event()
1965 scsi_esp_cmd(esp, ESP_CMD_TI); in esp_process_event()
1966 esp->flags |= ESP_FLAG_QUICKIRQ_CHECK; in esp_process_event()
1969 if (esp->ireg & ESP_INTR_FDONE) { in esp_process_event()
1972 if (esp->rev == FASHME) in esp_process_event()
1973 val = esp->fifo[0]; in esp_process_event()
1976 esp->msg_in[esp->msg_in_len++] = val; in esp_process_event()
1980 if (!esp_msgin_process(esp)) in esp_process_event()
1981 esp->msg_in_len = 0; in esp_process_event()
1983 if (esp->rev == FASHME) in esp_process_event()
1984 scsi_esp_cmd(esp, ESP_CMD_FLUSH); in esp_process_event()
1986 scsi_esp_cmd(esp, ESP_CMD_MOK); in esp_process_event()
1989 if (esp->event == ESP_EVENT_RESET) in esp_process_event()
1992 if (esp->event != ESP_EVENT_FREE_BUS) in esp_process_event()
1993 esp_event(esp, ESP_EVENT_CHECK_PHASE); in esp_process_event()
1995 shost_printk(KERN_INFO, esp->host, in esp_process_event()
1997 esp_schedule_reset(esp); in esp_process_event()
2002 memcpy(esp->command_block, esp->cmd_bytes_ptr, in esp_process_event()
2003 esp->cmd_bytes_left); in esp_process_event()
2004 esp_send_dma_cmd(esp, esp->cmd_bytes_left, 16, ESP_CMD_TI); in esp_process_event()
2005 esp_event(esp, ESP_EVENT_CMD_DONE); in esp_process_event()
2006 esp->flags |= ESP_FLAG_QUICKIRQ_CHECK; in esp_process_event()
2009 esp->ops->dma_invalidate(esp); in esp_process_event()
2010 if (esp->ireg & ESP_INTR_BSERV) { in esp_process_event()
2011 esp_event(esp, ESP_EVENT_CHECK_PHASE); in esp_process_event()
2014 esp_schedule_reset(esp); in esp_process_event()
2018 scsi_esp_cmd(esp, ESP_CMD_RS); in esp_process_event()
2022 shost_printk(KERN_INFO, esp->host, in esp_process_event()
2023 "Unexpected event %x, resetting\n", esp->event); in esp_process_event()
2024 esp_schedule_reset(esp); in esp_process_event()
2030 static void esp_reset_cleanup_one(struct esp *esp, struct esp_cmd_entry *ent) in esp_reset_cleanup_one() argument
2034 esp_unmap_dma(esp, cmd); in esp_reset_cleanup_one()
2039 esp_unmap_sense(esp, ent); in esp_reset_cleanup_one()
2043 esp_put_ent(esp, ent); in esp_reset_cleanup_one()
2054 static void esp_reset_cleanup(struct esp *esp) in esp_reset_cleanup() argument
2059 list_for_each_entry_safe(ent, tmp, &esp->queued_cmds, list) { in esp_reset_cleanup()
2065 esp_put_ent(esp, ent); in esp_reset_cleanup()
2068 list_for_each_entry_safe(ent, tmp, &esp->active_cmds, list) { in esp_reset_cleanup()
2069 if (ent == esp->active_cmd) in esp_reset_cleanup()
2070 esp->active_cmd = NULL; in esp_reset_cleanup()
2071 esp_reset_cleanup_one(esp, ent); in esp_reset_cleanup()
2074 BUG_ON(esp->active_cmd != NULL); in esp_reset_cleanup()
2078 struct esp_target_data *tp = &esp->target[i]; in esp_reset_cleanup()
2092 esp->flags &= ~ESP_FLAG_RESETTING; in esp_reset_cleanup()
2096 static void __esp_interrupt(struct esp *esp) in __esp_interrupt() argument
2104 esp->sreg = esp_read8(ESP_STATUS); in __esp_interrupt()
2105 esp->seqreg = esp_read8(ESP_SSTEP); in __esp_interrupt()
2106 esp->ireg = esp_read8(ESP_INTRPT); in __esp_interrupt()
2108 if (esp->flags & ESP_FLAG_RESETTING) { in __esp_interrupt()
2111 if (esp_check_gross_error(esp)) in __esp_interrupt()
2114 finish_reset = esp_check_spur_intr(esp); in __esp_interrupt()
2119 if (esp->ireg & ESP_INTR_SR) in __esp_interrupt()
2123 esp_reset_cleanup(esp); in __esp_interrupt()
2124 if (esp->eh_reset) { in __esp_interrupt()
2125 complete(esp->eh_reset); in __esp_interrupt()
2126 esp->eh_reset = NULL; in __esp_interrupt()
2131 phase = (esp->sreg & ESP_STAT_PMASK); in __esp_interrupt()
2132 if (esp->rev == FASHME) { in __esp_interrupt()
2134 esp->select_state == ESP_SELECT_NONE && in __esp_interrupt()
2135 esp->event != ESP_EVENT_STATUS && in __esp_interrupt()
2136 esp->event != ESP_EVENT_DATA_DONE) || in __esp_interrupt()
2137 (esp->ireg & ESP_INTR_RSEL)) { in __esp_interrupt()
2138 esp->sreg2 = esp_read8(ESP_STATUS2); in __esp_interrupt()
2139 if (!(esp->sreg2 & ESP_STAT2_FEMPTY) || in __esp_interrupt()
2140 (esp->sreg2 & ESP_STAT2_F1BYTE)) in __esp_interrupt()
2141 hme_read_fifo(esp); in __esp_interrupt()
2147 esp->sreg, esp->seqreg, esp->sreg2, esp->ireg); in __esp_interrupt()
2151 if (esp->ireg & (ESP_INTR_S | ESP_INTR_SATN | ESP_INTR_IC)) { in __esp_interrupt()
2152 shost_printk(KERN_INFO, esp->host, in __esp_interrupt()
2153 "unexpected IREG %02x\n", esp->ireg); in __esp_interrupt()
2154 if (esp->ireg & ESP_INTR_IC) in __esp_interrupt()
2155 esp_dump_cmd_log(esp); in __esp_interrupt()
2157 esp_schedule_reset(esp); in __esp_interrupt()
2159 if (esp->ireg & ESP_INTR_RSEL) { in __esp_interrupt()
2160 if (esp->active_cmd) in __esp_interrupt()
2161 (void) esp_finish_select(esp); in __esp_interrupt()
2162 intr_done = esp_reconnect(esp); in __esp_interrupt()
2165 if (esp->select_state != ESP_SELECT_NONE) in __esp_interrupt()
2166 intr_done = esp_finish_select(esp); in __esp_interrupt()
2170 intr_done = esp_process_event(esp); in __esp_interrupt()
2175 struct esp *esp = dev_id; in scsi_esp_intr() local
2179 spin_lock_irqsave(esp->host->host_lock, flags); in scsi_esp_intr()
2181 if (esp->ops->irq_pending(esp)) { in scsi_esp_intr()
2186 __esp_interrupt(esp); in scsi_esp_intr()
2187 if (!(esp->flags & ESP_FLAG_QUICKIRQ_CHECK)) in scsi_esp_intr()
2189 esp->flags &= ~ESP_FLAG_QUICKIRQ_CHECK; in scsi_esp_intr()
2192 if (esp->ops->irq_pending(esp)) in scsi_esp_intr()
2199 spin_unlock_irqrestore(esp->host->host_lock, flags); in scsi_esp_intr()
2205 static void esp_get_revision(struct esp *esp) in esp_get_revision() argument
2209 esp->config1 = (ESP_CONFIG1_PENABLE | (esp->scsi_id & 7)); in esp_get_revision()
2210 if (esp->config2 == 0) { in esp_get_revision()
2211 esp->config2 = (ESP_CONFIG2_SCSI2ENAB | ESP_CONFIG2_REGPARITY); in esp_get_revision()
2212 esp_write8(esp->config2, ESP_CFG2); in esp_get_revision()
2217 esp->config2 = 0; in esp_get_revision()
2224 esp->rev = ESP100; in esp_get_revision()
2229 esp_set_all_config3(esp, 5); in esp_get_revision()
2230 esp->prev_cfg3 = 5; in esp_get_revision()
2231 esp_write8(esp->config2, ESP_CFG2); in esp_get_revision()
2233 esp_write8(esp->prev_cfg3, ESP_CFG3); in esp_get_revision()
2240 esp->rev = ESP100A; in esp_get_revision()
2242 esp_set_all_config3(esp, 0); in esp_get_revision()
2243 esp->prev_cfg3 = 0; in esp_get_revision()
2244 esp_write8(esp->prev_cfg3, ESP_CFG3); in esp_get_revision()
2249 if (esp->cfact == 0 || esp->cfact > ESP_CCF_F5) { in esp_get_revision()
2250 esp->rev = FAST; in esp_get_revision()
2251 esp->sync_defp = SYNC_DEFP_FAST; in esp_get_revision()
2253 esp->rev = ESP236; in esp_get_revision()
2258 static void esp_init_swstate(struct esp *esp) in esp_init_swstate() argument
2262 INIT_LIST_HEAD(&esp->queued_cmds); in esp_init_swstate()
2263 INIT_LIST_HEAD(&esp->active_cmds); in esp_init_swstate()
2264 INIT_LIST_HEAD(&esp->esp_cmd_pool); in esp_init_swstate()
2271 esp->target[i].flags = 0; in esp_init_swstate()
2272 esp->target[i].nego_goal_period = 0; in esp_init_swstate()
2273 esp->target[i].nego_goal_offset = 0; in esp_init_swstate()
2274 esp->target[i].nego_goal_width = 0; in esp_init_swstate()
2275 esp->target[i].nego_goal_tags = 0; in esp_init_swstate()
2279 /* This places the ESP into a known state at boot time. */
2280 static void esp_bootup_reset(struct esp *esp) in esp_bootup_reset() argument
2285 esp->ops->reset_dma(esp); in esp_bootup_reset()
2287 /* Reset the ESP */ in esp_bootup_reset()
2288 esp_reset_esp(esp); in esp_bootup_reset()
2290 /* Reset the SCSI bus, but tell ESP not to generate an irq */ in esp_bootup_reset()
2295 scsi_esp_cmd(esp, ESP_CMD_RS); in esp_bootup_reset()
2298 esp_write8(esp->config1, ESP_CFG1); in esp_bootup_reset()
2304 static void esp_set_clock_params(struct esp *esp) in esp_set_clock_params() argument
2316 * going into the ESP on this machine. Any operation whose timing in esp_set_clock_params()
2323 * The ESP isn't very bright and will arbitrate for the bus and try in esp_set_clock_params()
2325 * ESP when it has taken too long to negotiate and that it should in esp_set_clock_params()
2339 * handle on this ESP. in esp_set_clock_params()
2341 fhz = esp->cfreq; in esp_set_clock_params()
2357 esp->cfact = (ccf == 8 ? 0 : ccf); in esp_set_clock_params()
2358 esp->cfreq = fhz; in esp_set_clock_params()
2359 esp->ccycle = ESP_HZ_TO_CYCLE(fhz); in esp_set_clock_params()
2360 esp->ctick = ESP_TICK(ccf, esp->ccycle); in esp_set_clock_params()
2361 esp->neg_defp = ESP_NEG_DEFP(fhz, ccf); in esp_set_clock_params()
2362 esp->sync_defp = SYNC_DEFP_SLOW; in esp_set_clock_params()
2379 int scsi_esp_register(struct esp *esp) in scsi_esp_register() argument
2384 if (!esp->num_tags) in scsi_esp_register()
2385 esp->num_tags = ESP_DEFAULT_TAGS; in scsi_esp_register()
2386 esp->host->transportt = esp_transport_template; in scsi_esp_register()
2387 esp->host->max_lun = ESP_MAX_LUN; in scsi_esp_register()
2388 esp->host->cmd_per_lun = 2; in scsi_esp_register()
2389 esp->host->unique_id = instance; in scsi_esp_register()
2391 esp_set_clock_params(esp); in scsi_esp_register()
2393 esp_get_revision(esp); in scsi_esp_register()
2395 esp_init_swstate(esp); in scsi_esp_register()
2397 esp_bootup_reset(esp); in scsi_esp_register()
2399 dev_printk(KERN_INFO, esp->dev, "esp%u: regs[%1p:%1p] irq[%u]\n", in scsi_esp_register()
2400 esp->host->unique_id, esp->regs, esp->dma_regs, in scsi_esp_register()
2401 esp->host->irq); in scsi_esp_register()
2402 dev_printk(KERN_INFO, esp->dev, in scsi_esp_register()
2403 "esp%u: is a %s, %u MHz (ccf=%u), SCSI ID %u\n", in scsi_esp_register()
2404 esp->host->unique_id, esp_chip_names[esp->rev], in scsi_esp_register()
2405 esp->cfreq / 1000000, esp->cfact, esp->scsi_id); in scsi_esp_register()
2410 err = scsi_add_host(esp->host, esp->dev); in scsi_esp_register()
2416 scsi_scan_host(esp->host); in scsi_esp_register()
2422 void scsi_esp_unregister(struct esp *esp) in scsi_esp_unregister() argument
2424 scsi_remove_host(esp->host); in scsi_esp_unregister()
2430 struct esp *esp = shost_priv(dev_to_shost(&starget->dev)); in esp_target_alloc() local
2431 struct esp_target_data *tp = &esp->target[starget->id]; in esp_target_alloc()
2440 struct esp *esp = shost_priv(dev_to_shost(&starget->dev)); in esp_target_destroy() local
2441 struct esp_target_data *tp = &esp->target[starget->id]; in esp_target_destroy()
2448 struct esp *esp = shost_priv(dev->host); in esp_slave_alloc() local
2449 struct esp_target_data *tp = &esp->target[dev->id]; in esp_slave_alloc()
2457 spi_min_period(tp->starget) = esp->min_period; in esp_slave_alloc()
2460 if (esp->flags & ESP_FLAG_WIDE_CAPABLE) in esp_slave_alloc()
2470 struct esp *esp = shost_priv(dev->host); in esp_slave_configure() local
2471 struct esp_target_data *tp = &esp->target[dev->id]; in esp_slave_configure()
2474 scsi_change_queue_depth(dev, esp->num_tags); in esp_slave_configure()
2494 struct esp *esp = shost_priv(cmd->device->host); in esp_eh_abort_handler() local
2502 spin_lock_irqsave(esp->host->host_lock, flags); in esp_eh_abort_handler()
2503 shost_printk(KERN_ERR, esp->host, "Aborting command [%p:%02x]\n", in esp_eh_abort_handler()
2505 ent = esp->active_cmd; in esp_eh_abort_handler()
2507 shost_printk(KERN_ERR, esp->host, in esp_eh_abort_handler()
2510 list_for_each_entry(ent, &esp->queued_cmds, list) { in esp_eh_abort_handler()
2511 shost_printk(KERN_ERR, esp->host, "Queued command [%p:%02x]\n", in esp_eh_abort_handler()
2514 list_for_each_entry(ent, &esp->active_cmds, list) { in esp_eh_abort_handler()
2515 shost_printk(KERN_ERR, esp->host, " Active command [%p:%02x]\n", in esp_eh_abort_handler()
2518 esp_dump_cmd_log(esp); in esp_eh_abort_handler()
2519 spin_unlock_irqrestore(esp->host->host_lock, flags); in esp_eh_abort_handler()
2521 spin_lock_irqsave(esp->host->host_lock, flags); in esp_eh_abort_handler()
2524 list_for_each_entry(tmp, &esp->queued_cmds, list) { in esp_eh_abort_handler()
2540 esp_put_ent(esp, ent); in esp_eh_abort_handler()
2547 ent = esp->active_cmd; in esp_eh_abort_handler()
2553 if (esp->msg_out_len) in esp_eh_abort_handler()
2559 esp->msg_out[0] = ABORT_TASK_SET; in esp_eh_abort_handler()
2560 esp->msg_out_len = 1; in esp_eh_abort_handler()
2563 scsi_esp_cmd(esp, ESP_CMD_SATN); in esp_eh_abort_handler()
2584 spin_unlock_irqrestore(esp->host->host_lock, flags); in esp_eh_abort_handler()
2587 spin_lock_irqsave(esp->host->host_lock, flags); in esp_eh_abort_handler()
2589 spin_unlock_irqrestore(esp->host->host_lock, flags); in esp_eh_abort_handler()
2597 spin_unlock_irqrestore(esp->host->host_lock, flags); in esp_eh_abort_handler()
2605 spin_unlock_irqrestore(esp->host->host_lock, flags); in esp_eh_abort_handler()
2611 struct esp *esp = shost_priv(cmd->device->host); in esp_eh_bus_reset_handler() local
2617 spin_lock_irqsave(esp->host->host_lock, flags); in esp_eh_bus_reset_handler()
2619 esp->eh_reset = &eh_reset; in esp_eh_bus_reset_handler()
2626 esp->flags |= ESP_FLAG_RESETTING; in esp_eh_bus_reset_handler()
2627 scsi_esp_cmd(esp, ESP_CMD_RS); in esp_eh_bus_reset_handler()
2629 spin_unlock_irqrestore(esp->host->host_lock, flags); in esp_eh_bus_reset_handler()
2634 spin_lock_irqsave(esp->host->host_lock, flags); in esp_eh_bus_reset_handler()
2635 esp->eh_reset = NULL; in esp_eh_bus_reset_handler()
2636 spin_unlock_irqrestore(esp->host->host_lock, flags); in esp_eh_bus_reset_handler()
2647 struct esp *esp = shost_priv(cmd->device->host); in esp_eh_host_reset_handler() local
2650 spin_lock_irqsave(esp->host->host_lock, flags); in esp_eh_host_reset_handler()
2651 esp_bootup_reset(esp); in esp_eh_host_reset_handler()
2652 esp_reset_cleanup(esp); in esp_eh_host_reset_handler()
2653 spin_unlock_irqrestore(esp->host->host_lock, flags); in esp_eh_host_reset_handler()
2662 return "esp"; in esp_info()
2667 .name = "esp",
2688 struct esp *esp = shost_priv(host); in esp_get_signalling() local
2691 if (esp->flags & ESP_FLAG_DIFFERENTIAL) in esp_get_signalling()
2702 struct esp *esp = shost_priv(host); in esp_set_offset() local
2703 struct esp_target_data *tp = &esp->target[target->id]; in esp_set_offset()
2705 if (esp->flags & ESP_FLAG_DISABLE_SYNC) in esp_set_offset()
2715 struct esp *esp = shost_priv(host); in esp_set_period() local
2716 struct esp_target_data *tp = &esp->target[target->id]; in esp_set_period()
2725 struct esp *esp = shost_priv(host); in esp_set_width() local
2726 struct esp_target_data *tp = &esp->target[target->id]; in esp_set_width()
2759 MODULE_DESCRIPTION("ESP SCSI driver core");
2766 "ESP scsi bus reset delay in seconds");
2770 "ESP bitmapped debugging message enable value:\n"
2788 static inline unsigned int esp_wait_for_fifo(struct esp *esp) in esp_wait_for_fifo() argument
2801 shost_printk(KERN_ERR, esp->host, "FIFO is empty. sreg [%02x]\n", in esp_wait_for_fifo()
2806 static inline int esp_wait_for_intr(struct esp *esp) in esp_wait_for_intr() argument
2811 esp->sreg = esp_read8(ESP_STATUS); in esp_wait_for_intr()
2812 if (esp->sreg & ESP_STAT_INTR) in esp_wait_for_intr()
2818 shost_printk(KERN_ERR, esp->host, "IRQ timeout. sreg [%02x]\n", in esp_wait_for_intr()
2819 esp->sreg); in esp_wait_for_intr()
2825 void esp_send_pio_cmd(struct esp *esp, u32 addr, u32 esp_count, in esp_send_pio_cmd() argument
2828 u8 phase = esp->sreg & ESP_STAT_PMASK; in esp_send_pio_cmd()
2831 esp->send_cmd_error = 0; in esp_send_pio_cmd()
2837 scsi_esp_cmd(esp, cmd); in esp_send_pio_cmd()
2840 if (!esp_wait_for_fifo(esp)) in esp_send_pio_cmd()
2843 *dst++ = readb(esp->fifo_reg); in esp_send_pio_cmd()
2849 if (esp_wait_for_intr(esp)) { in esp_send_pio_cmd()
2850 esp->send_cmd_error = 1; in esp_send_pio_cmd()
2854 if ((esp->sreg & ESP_STAT_PMASK) != phase) in esp_send_pio_cmd()
2857 esp->ireg = esp_read8(ESP_INTRPT); in esp_send_pio_cmd()
2858 if (esp->ireg & mask) { in esp_send_pio_cmd()
2859 esp->send_cmd_error = 1; in esp_send_pio_cmd()
2872 scsi_esp_cmd(esp, ESP_CMD_FLUSH); in esp_send_pio_cmd()
2876 writesb(esp->fifo_reg, src, n); in esp_send_pio_cmd()
2880 scsi_esp_cmd(esp, cmd); in esp_send_pio_cmd()
2883 if (esp_wait_for_intr(esp)) { in esp_send_pio_cmd()
2884 esp->send_cmd_error = 1; in esp_send_pio_cmd()
2888 if ((esp->sreg & ESP_STAT_PMASK) != phase) in esp_send_pio_cmd()
2891 esp->ireg = esp_read8(ESP_INTRPT); in esp_send_pio_cmd()
2892 if (esp->ireg & ~ESP_INTR_BSERV) { in esp_send_pio_cmd()
2893 esp->send_cmd_error = 1; in esp_send_pio_cmd()
2902 writesb(esp->fifo_reg, src, n); in esp_send_pio_cmd()
2910 esp->send_cmd_residual = esp_count; in esp_send_pio_cmd()