forked from ~ljy/RK356X_SDK_RELEASE
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hc
2024-10-09 244b2c5ca8b14627e4a17755e5922221e121c771 
 kernel/drivers/scsi/wd719x.c
....@@ -1,3 +1,4 @@
1
+// SPDX-License-Identifier: GPL-2.0-only
12 /*
23  * Driver for Western Digital WD7193, WD7197 and WD7296 SCSI cards
34  * Copyright 2013 Ondrej Zary
....@@ -107,8 +108,15 @@
107108 	}
108109 
109110 	if (status != WD719X_INT_NOERRORS) {
111
+		u8 sue = wd719x_readb(wd, WD719X_AMR_SCB_ERROR);
112
+		/* we get this after wd719x_dev_reset, it's not an error */
113
+		if (sue == WD719X_SUE_TERM)
114
+			return 0;
115
+		/* we get this after wd719x_bus_reset, it's not an error */
116
+		if (sue == WD719X_SUE_RESET)
117
+			return 0;
110118 		dev_err(&wd->pdev->dev, "direct command failed, status 0x%02x, SUE 0x%02x\n",
111
-			status, wd719x_readb(wd, WD719X_AMR_SCB_ERROR));
119
+			status, sue);
112120 		return -EIO;
113121 	}
114122 
....@@ -127,8 +135,10 @@
127135 	if (wd719x_wait_ready(wd))
128136 		return -ETIMEDOUT;
129137 
130
-	/* make sure we get NO interrupts */
131
-	dev |= WD719X_DISABLE_INT;
138
+	/* disable interrupts except for RESET/ABORT (it breaks them) */
139
+	if (opcode != WD719X_CMD_BUSRESET && opcode != WD719X_CMD_ABORT &&
140
+	    opcode != WD719X_CMD_ABORT_TAG && opcode != WD719X_CMD_RESET)
141
+		dev |= WD719X_DISABLE_INT;
132142 	wd719x_writeb(wd, WD719X_AMR_CMD_PARAM, dev);
133143 	wd719x_writeb(wd, WD719X_AMR_CMD_PARAM_2, lun);
134144 	wd719x_writeb(wd, WD719X_AMR_CMD_PARAM_3, tag);
....@@ -153,8 +163,6 @@
153163 
154164 static void wd719x_destroy(struct wd719x *wd)
155165 {
156
-	struct wd719x_scb *scb;
157
-
158166 	/* stop the RISC */
159167 	if (wd719x_direct_cmd(wd, WD719X_CMD_SLEEP, 0, 0, 0, 0,
160168 			      WD719X_WAIT_FOR_RISC))
....@@ -162,37 +170,35 @@
162170 	/* disable RISC */
163171 	wd719x_writeb(wd, WD719X_PCI_MODE_SELECT, 0);
164172 
165
-	/* free all SCBs */
166
-	list_for_each_entry(scb, &wd->active_scbs, list)
167
-		pci_free_consistent(wd->pdev, sizeof(struct wd719x_scb), scb,
168
-				    scb->phys);
169
-	list_for_each_entry(scb, &wd->free_scbs, list)
170
-		pci_free_consistent(wd->pdev, sizeof(struct wd719x_scb), scb,
171
-				    scb->phys);
173
+	WARN_ON_ONCE(!list_empty(&wd->active_scbs));
174
+
172175 	/* free internal buffers */
173
-	pci_free_consistent(wd->pdev, wd->fw_size, wd->fw_virt, wd->fw_phys);
176
+	dma_free_coherent(&wd->pdev->dev, wd->fw_size, wd->fw_virt,
177
+			  wd->fw_phys);
174178 	wd->fw_virt = NULL;
175
-	pci_free_consistent(wd->pdev, WD719X_HASH_TABLE_SIZE, wd->hash_virt,
176
-			    wd->hash_phys);
179
+	dma_free_coherent(&wd->pdev->dev, WD719X_HASH_TABLE_SIZE, wd->hash_virt,
180
+			  wd->hash_phys);
177181 	wd->hash_virt = NULL;
178
-	pci_free_consistent(wd->pdev, sizeof(struct wd719x_host_param),
179
-			    wd->params, wd->params_phys);
182
+	dma_free_coherent(&wd->pdev->dev, sizeof(struct wd719x_host_param),
183
+			  wd->params, wd->params_phys);
180184 	wd->params = NULL;
181185 	free_irq(wd->pdev->irq, wd);
182186 }
183187 
184
-/* finish a SCSI command, mark SCB (if any) as free, unmap buffers */
185
-static void wd719x_finish_cmd(struct scsi_cmnd *cmd, int result)
188
+/* finish a SCSI command, unmap buffers */
189
+static void wd719x_finish_cmd(struct wd719x_scb *scb, int result)
186190 {
191
+	struct scsi_cmnd *cmd = scb->cmd;
187192 	struct wd719x *wd = shost_priv(cmd->device->host);
188
-	struct wd719x_scb *scb = (struct wd719x_scb *) cmd->host_scribble;
189193 
190
-	if (scb) {
191
-		list_move(&scb->list, &wd->free_scbs);
192
-		dma_unmap_single(&wd->pdev->dev, cmd->SCp.dma_handle,
193
-				 SCSI_SENSE_BUFFERSIZE, DMA_FROM_DEVICE);
194
-		scsi_dma_unmap(cmd);
195
-	}
194
+	list_del(&scb->list);
195
+
196
+	dma_unmap_single(&wd->pdev->dev, scb->phys,
197
+			sizeof(struct wd719x_scb), DMA_BIDIRECTIONAL);
198
+	scsi_dma_unmap(cmd);
199
+	dma_unmap_single(&wd->pdev->dev, cmd->SCp.dma_handle,
200
+			 SCSI_SENSE_BUFFERSIZE, DMA_FROM_DEVICE);
201
+
196202 	cmd->result = result << 16;
197203 	cmd->scsi_done(cmd);
198204 }
....@@ -202,36 +208,10 @@
202208 {
203209 	int i, count_sg;
204210 	unsigned long flags;
205
-	struct wd719x_scb *scb;
211
+	struct wd719x_scb *scb = scsi_cmd_priv(cmd);
206212 	struct wd719x *wd = shost_priv(sh);
207
-	dma_addr_t phys;
208213 
209
-	cmd->host_scribble = NULL;
210
-
211
-	/* get a free SCB - either from existing ones or allocate a new one */
212
-	spin_lock_irqsave(wd->sh->host_lock, flags);
213
-	scb = list_first_entry_or_null(&wd->free_scbs, struct wd719x_scb, list);
214
-	if (scb) {
215
-		list_del(&scb->list);
216
-		phys = scb->phys;
217
-	} else {
218
-		spin_unlock_irqrestore(wd->sh->host_lock, flags);
219
-		scb = pci_alloc_consistent(wd->pdev, sizeof(struct wd719x_scb),
220
-					   &phys);
221
-		spin_lock_irqsave(wd->sh->host_lock, flags);
222
-		if (!scb) {
223
-			dev_err(&wd->pdev->dev, "unable to allocate SCB\n");
224
-			wd719x_finish_cmd(cmd, DID_ERROR);
225
-			spin_unlock_irqrestore(wd->sh->host_lock, flags);
226
-			return 0;
227
-		}
228
-	}
229
-	memset(scb, 0, sizeof(struct wd719x_scb));
230
-	list_add(&scb->list, &wd->active_scbs);
231
-
232
-	scb->phys = phys;
233214 	scb->cmd = cmd;
234
-	cmd->host_scribble = (char *) scb;
235215 
236216 	scb->CDB_tag = 0;	/* Tagged queueing not supported yet */
237217 	scb->devid = cmd->device->id;
....@@ -240,10 +220,19 @@
240220 	/* copy the command */
241221 	memcpy(scb->CDB, cmd->cmnd, cmd->cmd_len);
242222 
223
+	/* map SCB */
224
+	scb->phys = dma_map_single(&wd->pdev->dev, scb, sizeof(*scb),
225
+				   DMA_BIDIRECTIONAL);
226
+
227
+	if (dma_mapping_error(&wd->pdev->dev, scb->phys))
228
+		goto out_error;
229
+
243230 	/* map sense buffer */
244231 	scb->sense_buf_length = SCSI_SENSE_BUFFERSIZE;
245232 	cmd->SCp.dma_handle = dma_map_single(&wd->pdev->dev, cmd->sense_buffer,
246233 			SCSI_SENSE_BUFFERSIZE, DMA_FROM_DEVICE);
234
+	if (dma_mapping_error(&wd->pdev->dev, cmd->SCp.dma_handle))
235
+		goto out_unmap_scb;
247236 	scb->sense_buf = cpu_to_le32(cmd->SCp.dma_handle);
248237 
249238 	/* request autosense */
....@@ -258,11 +247,8 @@
258247 
259248 	/* Scather/gather */
260249 	count_sg = scsi_dma_map(cmd);
261
-	if (count_sg < 0) {
262
-		wd719x_finish_cmd(cmd, DID_ERROR);
263
-		spin_unlock_irqrestore(wd->sh->host_lock, flags);
264
-		return 0;
265
-	}
250
+	if (count_sg < 0)
251
+		goto out_unmap_sense;
266252 	BUG_ON(count_sg > WD719X_SG);
267253 
268254 	if (count_sg) {
....@@ -283,11 +269,15 @@
283269 		scb->data_p = 0;
284270 	}
285271 
272
+	spin_lock_irqsave(wd->sh->host_lock, flags);
273
+
286274 	/* check if the Command register is free */
287275 	if (wd719x_readb(wd, WD719X_AMR_COMMAND) != WD719X_CMD_READY) {
288276 		spin_unlock_irqrestore(wd->sh->host_lock, flags);
289277 		return SCSI_MLQUEUE_HOST_BUSY;
290278 	}
279
+
280
+	list_add(&scb->list, &wd->active_scbs);
291281 
292282 	/* write pointer to the AMR */
293283 	wd719x_writel(wd, WD719X_AMR_SCB_IN, scb->phys);
....@@ -295,7 +285,17 @@
295285 	wd719x_writeb(wd, WD719X_AMR_COMMAND, WD719X_CMD_PROCESS_SCB);
296286 
297287 	spin_unlock_irqrestore(wd->sh->host_lock, flags);
288
+	return 0;
298289 
290
+out_unmap_sense:
291
+	dma_unmap_single(&wd->pdev->dev, cmd->SCp.dma_handle,
292
+			 SCSI_SENSE_BUFFERSIZE, DMA_FROM_DEVICE);
293
+out_unmap_scb:
294
+	dma_unmap_single(&wd->pdev->dev, scb->phys, sizeof(*scb),
295
+			 DMA_BIDIRECTIONAL);
296
+out_error:
297
+	cmd->result = DID_ERROR << 16;
298
+	cmd->scsi_done(cmd);
299299 	return 0;
300300 }
301301 
....@@ -327,8 +327,8 @@
327327 	wd->fw_size = ALIGN(fw_wcs->size, 4) + fw_risc->size;
328328 
329329 	if (!wd->fw_virt)
330
-		wd->fw_virt = pci_alloc_consistent(wd->pdev, wd->fw_size,
331
-						   &wd->fw_phys);
330
+		wd->fw_virt = dma_alloc_coherent(&wd->pdev->dev, wd->fw_size,
331
+						 &wd->fw_phys, GFP_KERNEL);
332332 	if (!wd->fw_virt) {
333333 		ret = -ENOMEM;
334334 		goto wd719x_init_end;
....@@ -464,7 +464,7 @@
464464 {
465465 	int action, result;
466466 	unsigned long flags;
467
-	struct wd719x_scb *scb = (struct wd719x_scb *)cmd->host_scribble;
467
+	struct wd719x_scb *scb = scsi_cmd_priv(cmd);
468468 	struct wd719x *wd = shost_priv(cmd->device->host);
469469 
470470 	dev_info(&wd->pdev->dev, "abort command, tag: %x\n", cmd->tag);
....@@ -474,6 +474,7 @@
474474 	spin_lock_irqsave(wd->sh->host_lock, flags);
475475 	result = wd719x_direct_cmd(wd, action, cmd->device->id,
476476 				   cmd->device->lun, cmd->tag, scb->phys, 0);
477
+	wd719x_finish_cmd(scb, DID_ABORT);
477478 	spin_unlock_irqrestore(wd->sh->host_lock, flags);
478479 	if (result)
479480 		return FAILED;
....@@ -486,6 +487,7 @@
486487 	int result;
487488 	unsigned long flags;
488489 	struct wd719x *wd = shost_priv(cmd->device->host);
490
+	struct wd719x_scb *scb, *tmp;
489491 
490492 	dev_info(&wd->pdev->dev, "%s reset requested\n",
491493 		 (opcode == WD719X_CMD_BUSRESET) ? "bus" : "device");
....@@ -493,6 +495,12 @@
493495 	spin_lock_irqsave(wd->sh->host_lock, flags);
494496 	result = wd719x_direct_cmd(wd, opcode, device, 0, 0, 0,
495497 				   WD719X_WAIT_FOR_SCSI_RESET);
498
+	/* flush all SCBs (or all for a device if dev_reset) */
499
+	list_for_each_entry_safe(scb, tmp, &wd->active_scbs, list) {
500
+		if (opcode == WD719X_CMD_BUSRESET ||
501
+		    scb->cmd->device->id == device)
502
+			wd719x_finish_cmd(scb, DID_RESET);
503
+	}
496504 	spin_unlock_irqrestore(wd->sh->host_lock, flags);
497505 	if (result)
498506 		return FAILED;
....@@ -515,24 +523,23 @@
515523 	struct wd719x *wd = shost_priv(cmd->device->host);
516524 	struct wd719x_scb *scb, *tmp;
517525 	unsigned long flags;
518
-	int result;
519526 
520527 	dev_info(&wd->pdev->dev, "host reset requested\n");
521528 	spin_lock_irqsave(wd->sh->host_lock, flags);
522
-	/* Try to reinit the RISC */
523
-	if (wd719x_chip_init(wd) == 0)
524
-		result = SUCCESS;
525
-	else
526
-		result = FAILED;
529
+	/* stop the RISC */
530
+	if (wd719x_direct_cmd(wd, WD719X_CMD_SLEEP, 0, 0, 0, 0,
531
+			      WD719X_WAIT_FOR_RISC))
532
+		dev_warn(&wd->pdev->dev, "RISC sleep command failed\n");
533
+	/* disable RISC */
534
+	wd719x_writeb(wd, WD719X_PCI_MODE_SELECT, 0);
527535 
528536 	/* flush all SCBs */
529
-	list_for_each_entry_safe(scb, tmp, &wd->active_scbs, list) {
530
-		struct scsi_cmnd *tmp_cmd = scb->cmd;
531
-		wd719x_finish_cmd(tmp_cmd, result);
532
-	}
537
+	list_for_each_entry_safe(scb, tmp, &wd->active_scbs, list)
538
+		wd719x_finish_cmd(scb, DID_RESET);
533539 	spin_unlock_irqrestore(wd->sh->host_lock, flags);
534540 
535
-	return result;
541
+	/* Try to reinit the RISC */
542
+	return wd719x_chip_init(wd) == 0 ? SUCCESS : FAILED;
536543 }
537544 
538545 static int wd719x_biosparam(struct scsi_device *sdev, struct block_device *bdev,
....@@ -555,7 +562,6 @@
555562 					union wd719x_regs regs,
556563 					struct wd719x_scb *scb)
557564 {
558
-	struct scsi_cmnd *cmd;
559565 	int result;
560566 
561567 	/* now have to find result from card */
....@@ -643,9 +649,8 @@
643649 		result = DID_ERROR;
644650 		break;
645651 	}
646
-	cmd = scb->cmd;
647652 
648
-	wd719x_finish_cmd(cmd, result);
653
+	wd719x_finish_cmd(scb, result);
649654 }
650655 
651656 static irqreturn_t wd719x_interrupt(int irq, void *dev_id)
....@@ -686,7 +691,7 @@
686691 			else
687692 				dev_err(&wd->pdev->dev, "card returned invalid SCB pointer\n");
688693 		} else
689
-			dev_warn(&wd->pdev->dev, "direct command 0x%x completed\n",
694
+			dev_dbg(&wd->pdev->dev, "direct command 0x%x completed\n",
690695 				 regs.bytes.OPC);
691696 		break;
692697 	case WD719X_INT_PIOREADY:
....@@ -809,7 +814,6 @@
809814 	int ret;
810815 
811816 	INIT_LIST_HEAD(&wd->active_scbs);
812
-	INIT_LIST_HEAD(&wd->free_scbs);
813817 
814818 	sh->base = pci_resource_start(wd->pdev, 0);
815819 
....@@ -820,17 +824,18 @@
820824 	wd->fw_virt = NULL;
821825 
822826 	/* memory area for host (EEPROM) parameters */
823
-	wd->params = pci_alloc_consistent(wd->pdev,
824
-					  sizeof(struct wd719x_host_param),
825
-					  &wd->params_phys);
827
+	wd->params = dma_alloc_coherent(&wd->pdev->dev,
828
+					sizeof(struct wd719x_host_param),
829
+					&wd->params_phys, GFP_KERNEL);
826830 	if (!wd->params) {
827831 		dev_warn(&wd->pdev->dev, "unable to allocate parameter buffer\n");
828832 		return -ENOMEM;
829833 	}
830834 
831835 	/* memory area for the RISC for hash table of outstanding requests */
832
-	wd->hash_virt = pci_alloc_consistent(wd->pdev, WD719X_HASH_TABLE_SIZE,
833
-					     &wd->hash_phys);
836
+	wd->hash_virt = dma_alloc_coherent(&wd->pdev->dev,
837
+					   WD719X_HASH_TABLE_SIZE,
838
+					   &wd->hash_phys, GFP_KERNEL);
834839 	if (!wd->hash_virt) {
835840 		dev_warn(&wd->pdev->dev, "unable to allocate hash buffer\n");
836841 		ret = -ENOMEM;
....@@ -862,10 +867,10 @@
862867 fail_free_irq:
863868 	free_irq(wd->pdev->irq, wd);
864869 fail_free_hash:
865
-	pci_free_consistent(wd->pdev, WD719X_HASH_TABLE_SIZE, wd->hash_virt,
870
+	dma_free_coherent(&wd->pdev->dev, WD719X_HASH_TABLE_SIZE, wd->hash_virt,
866871 			    wd->hash_phys);
867872 fail_free_params:
868
-	pci_free_consistent(wd->pdev, sizeof(struct wd719x_host_param),
873
+	dma_free_coherent(&wd->pdev->dev, sizeof(struct wd719x_host_param),
869874 			    wd->params, wd->params_phys);
870875 
871876 	return ret;
....@@ -874,6 +879,7 @@
874879 static struct scsi_host_template wd719x_template = {
875880 	.module				= THIS_MODULE,
876881 	.name				= "Western Digital 719x",
882
+	.cmd_size			= sizeof(struct wd719x_scb),
877883 	.queuecommand			= wd719x_queuecommand,
878884 	.eh_abort_handler		= wd719x_abort,
879885 	.eh_device_reset_handler	= wd719x_dev_reset,
....@@ -884,7 +890,6 @@
884890 	.can_queue			= 255,
885891 	.this_id			= 7,
886892 	.sg_tablesize			= WD719X_SG,
887
-	.use_clustering			= ENABLE_CLUSTERING,
888893 };
889894 
890895 static int wd719x_pci_probe(struct pci_dev *pdev, const struct pci_device_id *d)
....@@ -897,7 +902,7 @@
897902 	if (err)
898903 		goto fail;
899904 
900
-	if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32))) {
905
+	if (dma_set_mask(&pdev->dev, DMA_BIT_MASK(32))) {
901906 		dev_warn(&pdev->dev, "Unable to set 32-bit DMA mask\n");
902907 		goto disable_device;
903908 	}