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-rw-r--r--drivers/scsi/aic94xx/aic94xx_task.c628
1 files changed, 628 insertions, 0 deletions
diff --git a/drivers/scsi/aic94xx/aic94xx_task.c b/drivers/scsi/aic94xx/aic94xx_task.c
new file mode 100644
index 000000000..2eb2885ee
--- /dev/null
+++ b/drivers/scsi/aic94xx/aic94xx_task.c
@@ -0,0 +1,628 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Aic94xx SAS/SATA Tasks
+ *
+ * Copyright (C) 2005 Adaptec, Inc. All rights reserved.
+ * Copyright (C) 2005 Luben Tuikov <luben_tuikov@adaptec.com>
+ */
+
+#include <linux/spinlock.h>
+#include "aic94xx.h"
+#include "aic94xx_sas.h"
+#include "aic94xx_hwi.h"
+
+static void asd_unbuild_ata_ascb(struct asd_ascb *a);
+static void asd_unbuild_smp_ascb(struct asd_ascb *a);
+static void asd_unbuild_ssp_ascb(struct asd_ascb *a);
+
+static void asd_can_dequeue(struct asd_ha_struct *asd_ha, int num)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&asd_ha->seq.pend_q_lock, flags);
+ asd_ha->seq.can_queue += num;
+ spin_unlock_irqrestore(&asd_ha->seq.pend_q_lock, flags);
+}
+
+/* DMA_... to our direction translation.
+ */
+static const u8 data_dir_flags[] = {
+ [DMA_BIDIRECTIONAL] = DATA_DIR_BYRECIPIENT, /* UNSPECIFIED */
+ [DMA_TO_DEVICE] = DATA_DIR_OUT, /* OUTBOUND */
+ [DMA_FROM_DEVICE] = DATA_DIR_IN, /* INBOUND */
+ [DMA_NONE] = DATA_DIR_NONE, /* NO TRANSFER */
+};
+
+static int asd_map_scatterlist(struct sas_task *task,
+ struct sg_el *sg_arr,
+ gfp_t gfp_flags)
+{
+ struct asd_ascb *ascb = task->lldd_task;
+ struct asd_ha_struct *asd_ha = ascb->ha;
+ struct scatterlist *sc;
+ int num_sg, res;
+
+ if (task->data_dir == DMA_NONE)
+ return 0;
+
+ if (task->num_scatter == 0) {
+ void *p = task->scatter;
+ dma_addr_t dma = dma_map_single(&asd_ha->pcidev->dev, p,
+ task->total_xfer_len,
+ task->data_dir);
+ if (dma_mapping_error(&asd_ha->pcidev->dev, dma))
+ return -ENOMEM;
+
+ sg_arr[0].bus_addr = cpu_to_le64((u64)dma);
+ sg_arr[0].size = cpu_to_le32(task->total_xfer_len);
+ sg_arr[0].flags |= ASD_SG_EL_LIST_EOL;
+ return 0;
+ }
+
+ /* STP tasks come from libata which has already mapped
+ * the SG list */
+ if (sas_protocol_ata(task->task_proto))
+ num_sg = task->num_scatter;
+ else
+ num_sg = dma_map_sg(&asd_ha->pcidev->dev, task->scatter,
+ task->num_scatter, task->data_dir);
+ if (num_sg == 0)
+ return -ENOMEM;
+
+ if (num_sg > 3) {
+ int i;
+
+ ascb->sg_arr = asd_alloc_coherent(asd_ha,
+ num_sg*sizeof(struct sg_el),
+ gfp_flags);
+ if (!ascb->sg_arr) {
+ res = -ENOMEM;
+ goto err_unmap;
+ }
+ for_each_sg(task->scatter, sc, num_sg, i) {
+ struct sg_el *sg =
+ &((struct sg_el *)ascb->sg_arr->vaddr)[i];
+ sg->bus_addr = cpu_to_le64((u64)sg_dma_address(sc));
+ sg->size = cpu_to_le32((u32)sg_dma_len(sc));
+ if (i == num_sg-1)
+ sg->flags |= ASD_SG_EL_LIST_EOL;
+ }
+
+ for_each_sg(task->scatter, sc, 2, i) {
+ sg_arr[i].bus_addr =
+ cpu_to_le64((u64)sg_dma_address(sc));
+ sg_arr[i].size = cpu_to_le32((u32)sg_dma_len(sc));
+ }
+ sg_arr[1].next_sg_offs = 2 * sizeof(*sg_arr);
+ sg_arr[1].flags |= ASD_SG_EL_LIST_EOS;
+
+ memset(&sg_arr[2], 0, sizeof(*sg_arr));
+ sg_arr[2].bus_addr=cpu_to_le64((u64)ascb->sg_arr->dma_handle);
+ } else {
+ int i;
+ for_each_sg(task->scatter, sc, num_sg, i) {
+ sg_arr[i].bus_addr =
+ cpu_to_le64((u64)sg_dma_address(sc));
+ sg_arr[i].size = cpu_to_le32((u32)sg_dma_len(sc));
+ }
+ sg_arr[i-1].flags |= ASD_SG_EL_LIST_EOL;
+ }
+
+ return 0;
+err_unmap:
+ if (sas_protocol_ata(task->task_proto))
+ dma_unmap_sg(&asd_ha->pcidev->dev, task->scatter,
+ task->num_scatter, task->data_dir);
+ return res;
+}
+
+static void asd_unmap_scatterlist(struct asd_ascb *ascb)
+{
+ struct asd_ha_struct *asd_ha = ascb->ha;
+ struct sas_task *task = ascb->uldd_task;
+
+ if (task->data_dir == DMA_NONE)
+ return;
+
+ if (task->num_scatter == 0) {
+ dma_addr_t dma = (dma_addr_t)
+ le64_to_cpu(ascb->scb->ssp_task.sg_element[0].bus_addr);
+ dma_unmap_single(&ascb->ha->pcidev->dev, dma,
+ task->total_xfer_len, task->data_dir);
+ return;
+ }
+
+ asd_free_coherent(asd_ha, ascb->sg_arr);
+ if (task->task_proto != SAS_PROTOCOL_STP)
+ dma_unmap_sg(&asd_ha->pcidev->dev, task->scatter,
+ task->num_scatter, task->data_dir);
+}
+
+/* ---------- Task complete tasklet ---------- */
+
+static void asd_get_response_tasklet(struct asd_ascb *ascb,
+ struct done_list_struct *dl)
+{
+ struct asd_ha_struct *asd_ha = ascb->ha;
+ struct sas_task *task = ascb->uldd_task;
+ struct task_status_struct *ts = &task->task_status;
+ unsigned long flags;
+ struct tc_resp_sb_struct {
+ __le16 index_escb;
+ u8 len_lsb;
+ u8 flags;
+ } __attribute__ ((packed)) *resp_sb = (void *) dl->status_block;
+
+/* int size = ((resp_sb->flags & 7) << 8) | resp_sb->len_lsb; */
+ int edb_id = ((resp_sb->flags & 0x70) >> 4)-1;
+ struct asd_ascb *escb;
+ struct asd_dma_tok *edb;
+ void *r;
+
+ spin_lock_irqsave(&asd_ha->seq.tc_index_lock, flags);
+ escb = asd_tc_index_find(&asd_ha->seq,
+ (int)le16_to_cpu(resp_sb->index_escb));
+ spin_unlock_irqrestore(&asd_ha->seq.tc_index_lock, flags);
+
+ if (!escb) {
+ ASD_DPRINTK("Uh-oh! No escb for this dl?!\n");
+ return;
+ }
+
+ ts->buf_valid_size = 0;
+ edb = asd_ha->seq.edb_arr[edb_id + escb->edb_index];
+ r = edb->vaddr;
+ if (task->task_proto == SAS_PROTOCOL_SSP) {
+ struct ssp_response_iu *iu =
+ r + 16 + sizeof(struct ssp_frame_hdr);
+
+ ts->residual = le32_to_cpu(*(__le32 *)r);
+
+ sas_ssp_task_response(&asd_ha->pcidev->dev, task, iu);
+ } else {
+ struct ata_task_resp *resp = (void *) &ts->buf[0];
+
+ ts->residual = le32_to_cpu(*(__le32 *)r);
+
+ if (SAS_STATUS_BUF_SIZE >= sizeof(*resp)) {
+ resp->frame_len = le16_to_cpu(*(__le16 *)(r+6));
+ memcpy(&resp->ending_fis[0], r+16, ATA_RESP_FIS_SIZE);
+ ts->buf_valid_size = sizeof(*resp);
+ }
+ }
+
+ asd_invalidate_edb(escb, edb_id);
+}
+
+static void asd_task_tasklet_complete(struct asd_ascb *ascb,
+ struct done_list_struct *dl)
+{
+ struct sas_task *task = ascb->uldd_task;
+ struct task_status_struct *ts = &task->task_status;
+ unsigned long flags;
+ u8 opcode = dl->opcode;
+
+ asd_can_dequeue(ascb->ha, 1);
+
+Again:
+ switch (opcode) {
+ case TC_NO_ERROR:
+ ts->resp = SAS_TASK_COMPLETE;
+ ts->stat = SAS_SAM_STAT_GOOD;
+ break;
+ case TC_UNDERRUN:
+ ts->resp = SAS_TASK_COMPLETE;
+ ts->stat = SAS_DATA_UNDERRUN;
+ ts->residual = le32_to_cpu(*(__le32 *)dl->status_block);
+ break;
+ case TC_OVERRUN:
+ ts->resp = SAS_TASK_COMPLETE;
+ ts->stat = SAS_DATA_OVERRUN;
+ ts->residual = 0;
+ break;
+ case TC_SSP_RESP:
+ case TC_ATA_RESP:
+ ts->resp = SAS_TASK_COMPLETE;
+ ts->stat = SAS_PROTO_RESPONSE;
+ asd_get_response_tasklet(ascb, dl);
+ break;
+ case TF_OPEN_REJECT:
+ ts->resp = SAS_TASK_UNDELIVERED;
+ ts->stat = SAS_OPEN_REJECT;
+ if (dl->status_block[1] & 2)
+ ts->open_rej_reason = 1 + dl->status_block[2];
+ else if (dl->status_block[1] & 1)
+ ts->open_rej_reason = (dl->status_block[2] >> 4)+10;
+ else
+ ts->open_rej_reason = SAS_OREJ_UNKNOWN;
+ break;
+ case TF_OPEN_TO:
+ ts->resp = SAS_TASK_UNDELIVERED;
+ ts->stat = SAS_OPEN_TO;
+ break;
+ case TF_PHY_DOWN:
+ case TU_PHY_DOWN:
+ ts->resp = SAS_TASK_UNDELIVERED;
+ ts->stat = SAS_PHY_DOWN;
+ break;
+ case TI_PHY_DOWN:
+ ts->resp = SAS_TASK_COMPLETE;
+ ts->stat = SAS_PHY_DOWN;
+ break;
+ case TI_BREAK:
+ case TI_PROTO_ERR:
+ case TI_NAK:
+ case TI_ACK_NAK_TO:
+ case TF_SMP_XMIT_RCV_ERR:
+ case TC_ATA_R_ERR_RECV:
+ ts->resp = SAS_TASK_COMPLETE;
+ ts->stat = SAS_INTERRUPTED;
+ break;
+ case TF_BREAK:
+ case TU_BREAK:
+ case TU_ACK_NAK_TO:
+ case TF_SMPRSP_TO:
+ ts->resp = SAS_TASK_UNDELIVERED;
+ ts->stat = SAS_DEV_NO_RESPONSE;
+ break;
+ case TF_NAK_RECV:
+ ts->resp = SAS_TASK_COMPLETE;
+ ts->stat = SAS_NAK_R_ERR;
+ break;
+ case TA_I_T_NEXUS_LOSS:
+ opcode = dl->status_block[0];
+ goto Again;
+ break;
+ case TF_INV_CONN_HANDLE:
+ ts->resp = SAS_TASK_UNDELIVERED;
+ ts->stat = SAS_DEVICE_UNKNOWN;
+ break;
+ case TF_REQUESTED_N_PENDING:
+ ts->resp = SAS_TASK_UNDELIVERED;
+ ts->stat = SAS_PENDING;
+ break;
+ case TC_TASK_CLEARED:
+ case TA_ON_REQ:
+ ts->resp = SAS_TASK_COMPLETE;
+ ts->stat = SAS_ABORTED_TASK;
+ break;
+
+ case TF_NO_SMP_CONN:
+ case TF_TMF_NO_CTX:
+ case TF_TMF_NO_TAG:
+ case TF_TMF_TAG_FREE:
+ case TF_TMF_TASK_DONE:
+ case TF_TMF_NO_CONN_HANDLE:
+ case TF_IRTT_TO:
+ case TF_IU_SHORT:
+ case TF_DATA_OFFS_ERR:
+ ts->resp = SAS_TASK_UNDELIVERED;
+ ts->stat = SAS_DEV_NO_RESPONSE;
+ break;
+
+ case TC_LINK_ADM_RESP:
+ case TC_CONTROL_PHY:
+ case TC_RESUME:
+ case TC_PARTIAL_SG_LIST:
+ default:
+ ASD_DPRINTK("%s: dl opcode: 0x%x?\n", __func__, opcode);
+ break;
+ }
+
+ switch (task->task_proto) {
+ case SAS_PROTOCOL_SATA:
+ case SAS_PROTOCOL_STP:
+ asd_unbuild_ata_ascb(ascb);
+ break;
+ case SAS_PROTOCOL_SMP:
+ asd_unbuild_smp_ascb(ascb);
+ break;
+ case SAS_PROTOCOL_SSP:
+ asd_unbuild_ssp_ascb(ascb);
+ default:
+ break;
+ }
+
+ spin_lock_irqsave(&task->task_state_lock, flags);
+ task->task_state_flags &= ~SAS_TASK_STATE_PENDING;
+ task->task_state_flags &= ~SAS_TASK_AT_INITIATOR;
+ task->task_state_flags |= SAS_TASK_STATE_DONE;
+ if (unlikely((task->task_state_flags & SAS_TASK_STATE_ABORTED))) {
+ struct completion *completion = ascb->completion;
+ spin_unlock_irqrestore(&task->task_state_lock, flags);
+ ASD_DPRINTK("task 0x%p done with opcode 0x%x resp 0x%x "
+ "stat 0x%x but aborted by upper layer!\n",
+ task, opcode, ts->resp, ts->stat);
+ if (completion)
+ complete(completion);
+ } else {
+ spin_unlock_irqrestore(&task->task_state_lock, flags);
+ task->lldd_task = NULL;
+ asd_ascb_free(ascb);
+ mb();
+ task->task_done(task);
+ }
+}
+
+/* ---------- ATA ---------- */
+
+static int asd_build_ata_ascb(struct asd_ascb *ascb, struct sas_task *task,
+ gfp_t gfp_flags)
+{
+ struct domain_device *dev = task->dev;
+ struct scb *scb;
+ u8 flags;
+ int res = 0;
+
+ scb = ascb->scb;
+
+ if (unlikely(task->ata_task.device_control_reg_update))
+ scb->header.opcode = CONTROL_ATA_DEV;
+ else if (dev->sata_dev.class == ATA_DEV_ATAPI)
+ scb->header.opcode = INITIATE_ATAPI_TASK;
+ else
+ scb->header.opcode = INITIATE_ATA_TASK;
+
+ scb->ata_task.proto_conn_rate = (1 << 5); /* STP */
+ if (dev->port->oob_mode == SAS_OOB_MODE)
+ scb->ata_task.proto_conn_rate |= dev->linkrate;
+
+ scb->ata_task.total_xfer_len = cpu_to_le32(task->total_xfer_len);
+ scb->ata_task.fis = task->ata_task.fis;
+ if (likely(!task->ata_task.device_control_reg_update))
+ scb->ata_task.fis.flags |= 0x80; /* C=1: update ATA cmd reg */
+ scb->ata_task.fis.flags &= 0xF0; /* PM_PORT field shall be 0 */
+ if (dev->sata_dev.class == ATA_DEV_ATAPI)
+ memcpy(scb->ata_task.atapi_packet, task->ata_task.atapi_packet,
+ 16);
+ scb->ata_task.sister_scb = cpu_to_le16(0xFFFF);
+ scb->ata_task.conn_handle = cpu_to_le16(
+ (u16)(unsigned long)dev->lldd_dev);
+
+ if (likely(!task->ata_task.device_control_reg_update)) {
+ flags = 0;
+ if (task->ata_task.dma_xfer)
+ flags |= DATA_XFER_MODE_DMA;
+ if (task->ata_task.use_ncq &&
+ dev->sata_dev.class != ATA_DEV_ATAPI)
+ flags |= ATA_Q_TYPE_NCQ;
+ flags |= data_dir_flags[task->data_dir];
+ scb->ata_task.ata_flags = flags;
+
+ scb->ata_task.retry_count = task->ata_task.retry_count;
+
+ flags = 0;
+ if (task->ata_task.set_affil_pol)
+ flags |= SET_AFFIL_POLICY;
+ if (task->ata_task.stp_affil_pol)
+ flags |= STP_AFFIL_POLICY;
+ scb->ata_task.flags = flags;
+ }
+ ascb->tasklet_complete = asd_task_tasklet_complete;
+
+ if (likely(!task->ata_task.device_control_reg_update))
+ res = asd_map_scatterlist(task, scb->ata_task.sg_element,
+ gfp_flags);
+
+ return res;
+}
+
+static void asd_unbuild_ata_ascb(struct asd_ascb *a)
+{
+ asd_unmap_scatterlist(a);
+}
+
+/* ---------- SMP ---------- */
+
+static int asd_build_smp_ascb(struct asd_ascb *ascb, struct sas_task *task,
+ gfp_t gfp_flags)
+{
+ struct asd_ha_struct *asd_ha = ascb->ha;
+ struct domain_device *dev = task->dev;
+ struct scb *scb;
+
+ dma_map_sg(&asd_ha->pcidev->dev, &task->smp_task.smp_req, 1,
+ DMA_TO_DEVICE);
+ dma_map_sg(&asd_ha->pcidev->dev, &task->smp_task.smp_resp, 1,
+ DMA_FROM_DEVICE);
+
+ scb = ascb->scb;
+
+ scb->header.opcode = INITIATE_SMP_TASK;
+
+ scb->smp_task.proto_conn_rate = dev->linkrate;
+
+ scb->smp_task.smp_req.bus_addr =
+ cpu_to_le64((u64)sg_dma_address(&task->smp_task.smp_req));
+ scb->smp_task.smp_req.size =
+ cpu_to_le32((u32)sg_dma_len(&task->smp_task.smp_req)-4);
+
+ scb->smp_task.smp_resp.bus_addr =
+ cpu_to_le64((u64)sg_dma_address(&task->smp_task.smp_resp));
+ scb->smp_task.smp_resp.size =
+ cpu_to_le32((u32)sg_dma_len(&task->smp_task.smp_resp)-4);
+
+ scb->smp_task.sister_scb = cpu_to_le16(0xFFFF);
+ scb->smp_task.conn_handle = cpu_to_le16((u16)
+ (unsigned long)dev->lldd_dev);
+
+ ascb->tasklet_complete = asd_task_tasklet_complete;
+
+ return 0;
+}
+
+static void asd_unbuild_smp_ascb(struct asd_ascb *a)
+{
+ struct sas_task *task = a->uldd_task;
+
+ BUG_ON(!task);
+ dma_unmap_sg(&a->ha->pcidev->dev, &task->smp_task.smp_req, 1,
+ DMA_TO_DEVICE);
+ dma_unmap_sg(&a->ha->pcidev->dev, &task->smp_task.smp_resp, 1,
+ DMA_FROM_DEVICE);
+}
+
+/* ---------- SSP ---------- */
+
+static int asd_build_ssp_ascb(struct asd_ascb *ascb, struct sas_task *task,
+ gfp_t gfp_flags)
+{
+ struct domain_device *dev = task->dev;
+ struct scb *scb;
+ int res = 0;
+
+ scb = ascb->scb;
+
+ scb->header.opcode = INITIATE_SSP_TASK;
+
+ scb->ssp_task.proto_conn_rate = (1 << 4); /* SSP */
+ scb->ssp_task.proto_conn_rate |= dev->linkrate;
+ scb->ssp_task.total_xfer_len = cpu_to_le32(task->total_xfer_len);
+ scb->ssp_task.ssp_frame.frame_type = SSP_DATA;
+ memcpy(scb->ssp_task.ssp_frame.hashed_dest_addr, dev->hashed_sas_addr,
+ HASHED_SAS_ADDR_SIZE);
+ memcpy(scb->ssp_task.ssp_frame.hashed_src_addr,
+ dev->port->ha->hashed_sas_addr, HASHED_SAS_ADDR_SIZE);
+ scb->ssp_task.ssp_frame.tptt = cpu_to_be16(0xFFFF);
+
+ memcpy(scb->ssp_task.ssp_cmd.lun, task->ssp_task.LUN, 8);
+ if (task->ssp_task.enable_first_burst)
+ scb->ssp_task.ssp_cmd.efb_prio_attr |= EFB_MASK;
+ scb->ssp_task.ssp_cmd.efb_prio_attr |= (task->ssp_task.task_prio << 3);
+ scb->ssp_task.ssp_cmd.efb_prio_attr |= (task->ssp_task.task_attr & 7);
+ memcpy(scb->ssp_task.ssp_cmd.cdb, task->ssp_task.cmd->cmnd,
+ task->ssp_task.cmd->cmd_len);
+
+ scb->ssp_task.sister_scb = cpu_to_le16(0xFFFF);
+ scb->ssp_task.conn_handle = cpu_to_le16(
+ (u16)(unsigned long)dev->lldd_dev);
+ scb->ssp_task.data_dir = data_dir_flags[task->data_dir];
+ scb->ssp_task.retry_count = scb->ssp_task.retry_count;
+
+ ascb->tasklet_complete = asd_task_tasklet_complete;
+
+ res = asd_map_scatterlist(task, scb->ssp_task.sg_element, gfp_flags);
+
+ return res;
+}
+
+static void asd_unbuild_ssp_ascb(struct asd_ascb *a)
+{
+ asd_unmap_scatterlist(a);
+}
+
+/* ---------- Execute Task ---------- */
+
+static int asd_can_queue(struct asd_ha_struct *asd_ha, int num)
+{
+ int res = 0;
+ unsigned long flags;
+
+ spin_lock_irqsave(&asd_ha->seq.pend_q_lock, flags);
+ if ((asd_ha->seq.can_queue - num) < 0)
+ res = -SAS_QUEUE_FULL;
+ else
+ asd_ha->seq.can_queue -= num;
+ spin_unlock_irqrestore(&asd_ha->seq.pend_q_lock, flags);
+
+ return res;
+}
+
+int asd_execute_task(struct sas_task *task, gfp_t gfp_flags)
+{
+ int res = 0;
+ LIST_HEAD(alist);
+ struct sas_task *t = task;
+ struct asd_ascb *ascb = NULL, *a;
+ struct asd_ha_struct *asd_ha = task->dev->port->ha->lldd_ha;
+ unsigned long flags;
+
+ res = asd_can_queue(asd_ha, 1);
+ if (res)
+ return res;
+
+ res = 1;
+ ascb = asd_ascb_alloc_list(asd_ha, &res, gfp_flags);
+ if (res) {
+ res = -ENOMEM;
+ goto out_err;
+ }
+
+ __list_add(&alist, ascb->list.prev, &ascb->list);
+ list_for_each_entry(a, &alist, list) {
+ a->uldd_task = t;
+ t->lldd_task = a;
+ break;
+ }
+ list_for_each_entry(a, &alist, list) {
+ t = a->uldd_task;
+ a->uldd_timer = 1;
+ if (t->task_proto & SAS_PROTOCOL_STP)
+ t->task_proto = SAS_PROTOCOL_STP;
+ switch (t->task_proto) {
+ case SAS_PROTOCOL_SATA:
+ case SAS_PROTOCOL_STP:
+ res = asd_build_ata_ascb(a, t, gfp_flags);
+ break;
+ case SAS_PROTOCOL_SMP:
+ res = asd_build_smp_ascb(a, t, gfp_flags);
+ break;
+ case SAS_PROTOCOL_SSP:
+ res = asd_build_ssp_ascb(a, t, gfp_flags);
+ break;
+ default:
+ asd_printk("unknown sas_task proto: 0x%x\n",
+ t->task_proto);
+ res = -ENOMEM;
+ break;
+ }
+ if (res)
+ goto out_err_unmap;
+
+ spin_lock_irqsave(&t->task_state_lock, flags);
+ t->task_state_flags |= SAS_TASK_AT_INITIATOR;
+ spin_unlock_irqrestore(&t->task_state_lock, flags);
+ }
+ list_del_init(&alist);
+
+ res = asd_post_ascb_list(asd_ha, ascb, 1);
+ if (unlikely(res)) {
+ a = NULL;
+ __list_add(&alist, ascb->list.prev, &ascb->list);
+ goto out_err_unmap;
+ }
+
+ return 0;
+out_err_unmap:
+ {
+ struct asd_ascb *b = a;
+ list_for_each_entry(a, &alist, list) {
+ if (a == b)
+ break;
+ t = a->uldd_task;
+ spin_lock_irqsave(&t->task_state_lock, flags);
+ t->task_state_flags &= ~SAS_TASK_AT_INITIATOR;
+ spin_unlock_irqrestore(&t->task_state_lock, flags);
+ switch (t->task_proto) {
+ case SAS_PROTOCOL_SATA:
+ case SAS_PROTOCOL_STP:
+ asd_unbuild_ata_ascb(a);
+ break;
+ case SAS_PROTOCOL_SMP:
+ asd_unbuild_smp_ascb(a);
+ break;
+ case SAS_PROTOCOL_SSP:
+ asd_unbuild_ssp_ascb(a);
+ default:
+ break;
+ }
+ t->lldd_task = NULL;
+ }
+ }
+ list_del_init(&alist);
+out_err:
+ if (ascb)
+ asd_ascb_free_list(ascb);
+ asd_can_dequeue(asd_ha, 1);
+ return res;
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-01 04:37:00 +0000