From 9d77db3c730780c8ef5ccd4b66403ff5675cfe4e Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Mon, 13 May 2024 10:30:14 +0000
Subject: [PATCH] modify sin led gpio
---
kernel/drivers/scsi/hisi_sas/hisi_sas_main.c | 2291 ++++++++++++++++++++++++++++++++++++++++++++++++++--------
1 files changed, 1,963 insertions(+), 328 deletions(-)
diff --git a/kernel/drivers/scsi/hisi_sas/hisi_sas_main.c b/kernel/drivers/scsi/hisi_sas/hisi_sas_main.c
index de4f41b..e5b9229 100644
--- a/kernel/drivers/scsi/hisi_sas/hisi_sas_main.c
+++ b/kernel/drivers/scsi/hisi_sas/hisi_sas_main.c
@@ -1,16 +1,10 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Copyright (c) 2015 Linaro Ltd.
* Copyright (c) 2015 Hisilicon Limited.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
*/
#include "hisi_sas.h"
-#include "../libsas/sas_internal.h"
#define DRV_NAME "hisi_sas"
#define DEV_IS_GONE(dev) \
@@ -124,28 +118,13 @@
}
EXPORT_SYMBOL_GPL(hisi_sas_sata_done);
-int hisi_sas_get_ncq_tag(struct sas_task *task, u32 *tag)
-{
- struct ata_queued_cmd *qc = task->uldd_task;
-
- if (qc) {
- if (qc->tf.command == ATA_CMD_FPDMA_WRITE ||
- qc->tf.command == ATA_CMD_FPDMA_READ) {
- *tag = qc->tag;
- return 1;
- }
- }
- return 0;
-}
-EXPORT_SYMBOL_GPL(hisi_sas_get_ncq_tag);
-
/*
* This function assumes linkrate mask fits in 8 bits, which it
* does for all HW versions supported.
*/
u8 hisi_sas_get_prog_phy_linkrate_mask(enum sas_linkrate max)
{
- u16 rate = 0;
+ u8 rate = 0;
int i;
max -= SAS_LINK_RATE_1_5_GBPS;
@@ -171,7 +150,7 @@
int phy_no;
for (phy_no = 0; phy_no < hisi_hba->n_phy; phy_no++)
- hisi_hba->hw->phy_disable(hisi_hba, phy_no);
+ hisi_sas_phy_enable(hisi_hba, phy_no, 0);
}
EXPORT_SYMBOL_GPL(hisi_sas_stop_phys);
@@ -184,7 +163,12 @@
static void hisi_sas_slot_index_free(struct hisi_hba *hisi_hba, int slot_idx)
{
- hisi_sas_slot_index_clear(hisi_hba, slot_idx);
+ if (hisi_hba->hw->slot_index_alloc ||
+ slot_idx >= HISI_SAS_UNRESERVED_IPTT) {
+ spin_lock(&hisi_hba->lock);
+ hisi_sas_slot_index_clear(hisi_hba, slot_idx);
+ spin_unlock(&hisi_hba->lock);
+ }
}
static void hisi_sas_slot_index_set(struct hisi_hba *hisi_hba, int slot_idx)
@@ -194,24 +178,32 @@
set_bit(slot_idx, bitmap);
}
-static int hisi_sas_slot_index_alloc(struct hisi_hba *hisi_hba, int *slot_idx)
+static int hisi_sas_slot_index_alloc(struct hisi_hba *hisi_hba,
+ struct scsi_cmnd *scsi_cmnd)
{
- unsigned int index;
+ int index;
void *bitmap = hisi_hba->slot_index_tags;
+ if (scsi_cmnd)
+ return scsi_cmnd->request->tag;
+
+ spin_lock(&hisi_hba->lock);
index = find_next_zero_bit(bitmap, hisi_hba->slot_index_count,
- hisi_hba->last_slot_index + 1);
+ hisi_hba->last_slot_index + 1);
if (index >= hisi_hba->slot_index_count) {
- index = find_next_zero_bit(bitmap, hisi_hba->slot_index_count,
- 0);
- if (index >= hisi_hba->slot_index_count)
+ index = find_next_zero_bit(bitmap,
+ hisi_hba->slot_index_count,
+ HISI_SAS_UNRESERVED_IPTT);
+ if (index >= hisi_hba->slot_index_count) {
+ spin_unlock(&hisi_hba->lock);
return -SAS_QUEUE_FULL;
+ }
}
hisi_sas_slot_index_set(hisi_hba, index);
- *slot_idx = index;
hisi_hba->last_slot_index = index;
+ spin_unlock(&hisi_hba->lock);
- return 0;
+ return index;
}
static void hisi_sas_slot_index_init(struct hisi_hba *hisi_hba)
@@ -225,8 +217,8 @@
void hisi_sas_slot_task_free(struct hisi_hba *hisi_hba, struct sas_task *task,
struct hisi_sas_slot *slot)
{
- struct hisi_sas_dq *dq = &hisi_hba->dq[slot->dlvry_queue];
- unsigned long flags;
+ int device_id = slot->device_id;
+ struct hisi_sas_device *sas_dev = &hisi_hba->devices[device_id];
if (task) {
struct device *dev = hisi_hba->dev;
@@ -236,23 +228,29 @@
task->lldd_task = NULL;
- if (!sas_protocol_ata(task->task_proto))
+ if (!sas_protocol_ata(task->task_proto)) {
if (slot->n_elem)
dma_unmap_sg(dev, task->scatter,
task->num_scatter,
task->data_dir);
+ if (slot->n_elem_dif) {
+ struct sas_ssp_task *ssp_task = &task->ssp_task;
+ struct scsi_cmnd *scsi_cmnd = ssp_task->cmd;
+
+ dma_unmap_sg(dev, scsi_prot_sglist(scsi_cmnd),
+ scsi_prot_sg_count(scsi_cmnd),
+ task->data_dir);
+ }
+ }
}
-
- spin_lock_irqsave(&dq->lock, flags);
+ spin_lock(&sas_dev->lock);
list_del_init(&slot->entry);
- spin_unlock_irqrestore(&dq->lock, flags);
+ spin_unlock(&sas_dev->lock);
memset(slot, 0, offsetof(struct hisi_sas_slot, buf));
- spin_lock_irqsave(&hisi_hba->lock, flags);
hisi_sas_slot_index_free(hisi_hba, slot->idx);
- spin_unlock_irqrestore(&hisi_hba->lock, flags);
}
EXPORT_SYMBOL_GPL(hisi_sas_slot_task_free);
@@ -282,6 +280,129 @@
device_id, abort_flag, tag_to_abort);
}
+static void hisi_sas_dma_unmap(struct hisi_hba *hisi_hba,
+ struct sas_task *task, int n_elem,
+ int n_elem_req)
+{
+ struct device *dev = hisi_hba->dev;
+
+ if (!sas_protocol_ata(task->task_proto)) {
+ if (task->num_scatter) {
+ if (n_elem)
+ dma_unmap_sg(dev, task->scatter,
+ task->num_scatter,
+ task->data_dir);
+ } else if (task->task_proto & SAS_PROTOCOL_SMP) {
+ if (n_elem_req)
+ dma_unmap_sg(dev, &task->smp_task.smp_req,
+ 1, DMA_TO_DEVICE);
+ }
+ }
+}
+
+static int hisi_sas_dma_map(struct hisi_hba *hisi_hba,
+ struct sas_task *task, int *n_elem,
+ int *n_elem_req)
+{
+ struct device *dev = hisi_hba->dev;
+ int rc;
+
+ if (sas_protocol_ata(task->task_proto)) {
+ *n_elem = task->num_scatter;
+ } else {
+ unsigned int req_len;
+
+ if (task->num_scatter) {
+ *n_elem = dma_map_sg(dev, task->scatter,
+ task->num_scatter, task->data_dir);
+ if (!*n_elem) {
+ rc = -ENOMEM;
+ goto prep_out;
+ }
+ } else if (task->task_proto & SAS_PROTOCOL_SMP) {
+ *n_elem_req = dma_map_sg(dev, &task->smp_task.smp_req,
+ 1, DMA_TO_DEVICE);
+ if (!*n_elem_req) {
+ rc = -ENOMEM;
+ goto prep_out;
+ }
+ req_len = sg_dma_len(&task->smp_task.smp_req);
+ if (req_len & 0x3) {
+ rc = -EINVAL;
+ goto err_out_dma_unmap;
+ }
+ }
+ }
+
+ if (*n_elem > HISI_SAS_SGE_PAGE_CNT) {
+ dev_err(dev, "task prep: n_elem(%d) > HISI_SAS_SGE_PAGE_CNT\n",
+ *n_elem);
+ rc = -EINVAL;
+ goto err_out_dma_unmap;
+ }
+ return 0;
+
+err_out_dma_unmap:
+ /* It would be better to call dma_unmap_sg() here, but it's messy */
+ hisi_sas_dma_unmap(hisi_hba, task, *n_elem,
+ *n_elem_req);
+prep_out:
+ return rc;
+}
+
+static void hisi_sas_dif_dma_unmap(struct hisi_hba *hisi_hba,
+ struct sas_task *task, int n_elem_dif)
+{
+ struct device *dev = hisi_hba->dev;
+
+ if (n_elem_dif) {
+ struct sas_ssp_task *ssp_task = &task->ssp_task;
+ struct scsi_cmnd *scsi_cmnd = ssp_task->cmd;
+
+ dma_unmap_sg(dev, scsi_prot_sglist(scsi_cmnd),
+ scsi_prot_sg_count(scsi_cmnd),
+ task->data_dir);
+ }
+}
+
+static int hisi_sas_dif_dma_map(struct hisi_hba *hisi_hba,
+ int *n_elem_dif, struct sas_task *task)
+{
+ struct device *dev = hisi_hba->dev;
+ struct sas_ssp_task *ssp_task;
+ struct scsi_cmnd *scsi_cmnd;
+ int rc;
+
+ if (task->num_scatter) {
+ ssp_task = &task->ssp_task;
+ scsi_cmnd = ssp_task->cmd;
+
+ if (scsi_prot_sg_count(scsi_cmnd)) {
+ *n_elem_dif = dma_map_sg(dev,
+ scsi_prot_sglist(scsi_cmnd),
+ scsi_prot_sg_count(scsi_cmnd),
+ task->data_dir);
+
+ if (!*n_elem_dif)
+ return -ENOMEM;
+
+ if (*n_elem_dif > HISI_SAS_SGE_DIF_PAGE_CNT) {
+ dev_err(dev, "task prep: n_elem_dif(%d) too large\n",
+ *n_elem_dif);
+ rc = -EINVAL;
+ goto err_out_dif_dma_unmap;
+ }
+ }
+ }
+
+ return 0;
+
+err_out_dif_dma_unmap:
+ dma_unmap_sg(dev, scsi_prot_sglist(scsi_cmnd),
+ scsi_prot_sg_count(scsi_cmnd), task->data_dir);
+ return rc;
+}
+
static int hisi_sas_task_prep(struct sas_task *task,
struct hisi_sas_dq **dq_pointer,
bool is_tmf, struct hisi_sas_tmf_task *tmf,
@@ -296,24 +417,11 @@
struct asd_sas_port *sas_port = device->port;
struct device *dev = hisi_hba->dev;
int dlvry_queue_slot, dlvry_queue, rc, slot_idx;
- int n_elem = 0, n_elem_req = 0, n_elem_resp = 0;
+ int n_elem = 0, n_elem_dif = 0, n_elem_req = 0;
+ struct scsi_cmnd *scmd = NULL;
struct hisi_sas_dq *dq;
unsigned long flags;
int wr_q_index;
-
- if (!sas_port) {
- struct task_status_struct *ts = &task->task_status;
-
- ts->resp = SAS_TASK_UNDELIVERED;
- ts->stat = SAS_PHY_DOWN;
- /*
- * libsas will use dev->port, should
- * not call task_done for sata
- */
- if (device->dev_type != SAS_SATA_DEV)
- task->task_done(task);
- return -ECOMM;
- }
if (DEV_IS_GONE(sas_dev)) {
if (sas_dev)
@@ -326,7 +434,33 @@
return -ECOMM;
}
- *dq_pointer = dq = sas_dev->dq;
+ if (task->uldd_task) {
+ struct ata_queued_cmd *qc;
+
+ if (dev_is_sata(device)) {
+ qc = task->uldd_task;
+ scmd = qc->scsicmd;
+ } else {
+ scmd = task->uldd_task;
+ }
+ }
+
+ if (scmd && hisi_hba->shost->nr_hw_queues) {
+ unsigned int dq_index;
+ u32 blk_tag;
+
+ blk_tag = blk_mq_unique_tag(scmd->request);
+ dq_index = blk_mq_unique_tag_to_hwq(blk_tag);
+ *dq_pointer = dq = &hisi_hba->dq[dq_index];
+ } else if (hisi_hba->shost->nr_hw_queues) {
+ struct Scsi_Host *shost = hisi_hba->shost;
+ struct blk_mq_queue_map *qmap = &shost->tag_set.map[HCTX_TYPE_DEFAULT];
+ int queue = qmap->mq_map[raw_smp_processor_id()];
+
+ *dq_pointer = dq = &hisi_hba->dq[queue];
+ } else {
+ *dq_pointer = dq = sas_dev->dq;
+ }
port = to_hisi_sas_port(sas_port);
if (port && !port->port_attached) {
@@ -338,78 +472,43 @@
return -ECOMM;
}
+ rc = hisi_sas_dma_map(hisi_hba, task, &n_elem,
+ &n_elem_req);
+ if (rc < 0)
+ goto prep_out;
+
if (!sas_protocol_ata(task->task_proto)) {
- unsigned int req_len, resp_len;
-
- if (task->num_scatter) {
- n_elem = dma_map_sg(dev, task->scatter,
- task->num_scatter, task->data_dir);
- if (!n_elem) {
- rc = -ENOMEM;
- goto prep_out;
- }
- } else if (task->task_proto & SAS_PROTOCOL_SMP) {
- n_elem_req = dma_map_sg(dev, &task->smp_task.smp_req,
- 1, DMA_TO_DEVICE);
- if (!n_elem_req) {
- rc = -ENOMEM;
- goto prep_out;
- }
- req_len = sg_dma_len(&task->smp_task.smp_req);
- if (req_len & 0x3) {
- rc = -EINVAL;
- goto err_out_dma_unmap;
- }
- n_elem_resp = dma_map_sg(dev, &task->smp_task.smp_resp,
- 1, DMA_FROM_DEVICE);
- if (!n_elem_resp) {
- rc = -ENOMEM;
- goto err_out_dma_unmap;
- }
- resp_len = sg_dma_len(&task->smp_task.smp_resp);
- if (resp_len & 0x3) {
- rc = -EINVAL;
- goto err_out_dma_unmap;
- }
- }
- } else
- n_elem = task->num_scatter;
-
- if (n_elem > HISI_SAS_SGE_PAGE_CNT) {
- dev_err(dev, "task prep: n_elem(%d) > HISI_SAS_SGE_PAGE_CNT",
- n_elem);
- rc = -EINVAL;
- goto err_out_dma_unmap;
+ rc = hisi_sas_dif_dma_map(hisi_hba, &n_elem_dif, task);
+ if (rc < 0)
+ goto err_out_dma_unmap;
}
- spin_lock_irqsave(&hisi_hba->lock, flags);
if (hisi_hba->hw->slot_index_alloc)
- rc = hisi_hba->hw->slot_index_alloc(hisi_hba, &slot_idx,
- device);
+ rc = hisi_hba->hw->slot_index_alloc(hisi_hba, device);
else
- rc = hisi_sas_slot_index_alloc(hisi_hba, &slot_idx);
- spin_unlock_irqrestore(&hisi_hba->lock, flags);
- if (rc)
- goto err_out_dma_unmap;
+ rc = hisi_sas_slot_index_alloc(hisi_hba, scmd);
+ if (rc < 0)
+ goto err_out_dif_dma_unmap;
+
+ slot_idx = rc;
slot = &hisi_hba->slot_info[slot_idx];
- spin_lock_irqsave(&dq->lock, flags);
- wr_q_index = hisi_hba->hw->get_free_slot(hisi_hba, dq);
- if (wr_q_index < 0) {
- spin_unlock_irqrestore(&dq->lock, flags);
- rc = -EAGAIN;
- goto err_out_tag;
- }
-
+ spin_lock(&dq->lock);
+ wr_q_index = dq->wr_point;
+ dq->wr_point = (dq->wr_point + 1) % HISI_SAS_QUEUE_SLOTS;
list_add_tail(&slot->delivery, &dq->list);
+ spin_unlock(&dq->lock);
+ spin_lock(&sas_dev->lock);
list_add_tail(&slot->entry, &sas_dev->list);
- spin_unlock_irqrestore(&dq->lock, flags);
+ spin_unlock(&sas_dev->lock);
dlvry_queue = dq->id;
dlvry_queue_slot = wr_q_index;
+ slot->device_id = sas_dev->device_id;
slot->n_elem = n_elem;
+ slot->n_elem_dif = n_elem_dif;
slot->dlvry_queue = dlvry_queue;
slot->dlvry_queue_slot = dlvry_queue_slot;
cmd_hdr_base = hisi_hba->cmd_hdr[dlvry_queue];
@@ -422,7 +521,8 @@
memset(slot->cmd_hdr, 0, sizeof(struct hisi_sas_cmd_hdr));
memset(hisi_sas_cmd_hdr_addr_mem(slot), 0, HISI_SAS_COMMAND_TABLE_SZ);
- memset(hisi_sas_status_buf_addr_mem(slot), 0, HISI_SAS_STATUS_BUF_SZ);
+ memset(hisi_sas_status_buf_addr_mem(slot), 0,
+ sizeof(struct hisi_sas_err_record));
switch (task->task_proto) {
case SAS_PROTOCOL_SMP:
@@ -451,24 +551,12 @@
return 0;
-err_out_tag:
- spin_lock_irqsave(&hisi_hba->lock, flags);
- hisi_sas_slot_index_free(hisi_hba, slot_idx);
- spin_unlock_irqrestore(&hisi_hba->lock, flags);
+err_out_dif_dma_unmap:
+ if (!sas_protocol_ata(task->task_proto))
+ hisi_sas_dif_dma_unmap(hisi_hba, task, n_elem_dif);
err_out_dma_unmap:
- if (!sas_protocol_ata(task->task_proto)) {
- if (task->num_scatter) {
- dma_unmap_sg(dev, task->scatter, task->num_scatter,
- task->data_dir);
- } else if (task->task_proto & SAS_PROTOCOL_SMP) {
- if (n_elem_req)
- dma_unmap_sg(dev, &task->smp_task.smp_req,
- 1, DMA_TO_DEVICE);
- if (n_elem_resp)
- dma_unmap_sg(dev, &task->smp_task.smp_resp,
- 1, DMA_FROM_DEVICE);
- }
- }
+ hisi_sas_dma_unmap(hisi_hba, task, n_elem,
+ n_elem_req);
prep_out:
dev_err(dev, "task prep: failed[%d]!\n", rc);
return rc;
@@ -479,10 +567,28 @@
{
u32 rc;
u32 pass = 0;
- unsigned long flags;
- struct hisi_hba *hisi_hba = dev_to_hisi_hba(task->dev);
- struct device *dev = hisi_hba->dev;
+ struct hisi_hba *hisi_hba;
+ struct device *dev;
+ struct domain_device *device = task->dev;
+ struct asd_sas_port *sas_port = device->port;
struct hisi_sas_dq *dq = NULL;
+
+ if (!sas_port) {
+ struct task_status_struct *ts = &task->task_status;
+
+ ts->resp = SAS_TASK_UNDELIVERED;
+ ts->stat = SAS_PHY_DOWN;
+ /*
+ * libsas will use dev->port, should
+ * not call task_done for sata
+ */
+ if (device->dev_type != SAS_SATA_DEV)
+ task->task_done(task);
+ return -ECOMM;
+ }
+
+ hisi_hba = dev_to_hisi_hba(device);
+ dev = hisi_hba->dev;
if (unlikely(test_bit(HISI_SAS_REJECT_CMD_BIT, &hisi_hba->flags))) {
/*
@@ -504,9 +610,9 @@
dev_err(dev, "task exec: failed[%d]!\n", rc);
if (likely(pass)) {
- spin_lock_irqsave(&dq->lock, flags);
+ spin_lock(&dq->lock);
hisi_hba->hw->start_delivery(dq);
- spin_unlock_irqrestore(&dq->lock, flags);
+ spin_unlock(&dq->lock);
}
return rc;
@@ -516,13 +622,17 @@
{
struct hisi_sas_phy *phy = &hisi_hba->phy[phy_no];
struct asd_sas_phy *sas_phy = &phy->sas_phy;
- struct sas_ha_struct *sas_ha;
if (!phy->phy_attached)
return;
- sas_ha = &hisi_hba->sha;
- sas_ha->notify_phy_event(sas_phy, PHYE_OOB_DONE);
+ if (test_bit(HISI_SAS_PM_BIT, &hisi_hba->flags) &&
+ !sas_phy->suspended) {
+ dev_warn(hisi_hba->dev, "phy%d during suspend filtered out\n", phy_no);
+ return;
+ }
+
+ sas_notify_phy_event(sas_phy, PHYE_OOB_DONE);
if (sas_phy->phy) {
struct sas_phy *sphy = sas_phy->phy;
@@ -546,23 +656,22 @@
id->initiator_bits = SAS_PROTOCOL_ALL;
id->target_bits = phy->identify.target_port_protocols;
} else if (phy->phy_type & PORT_TYPE_SATA) {
- /*Nothing*/
+ /* Nothing */
}
sas_phy->frame_rcvd_size = phy->frame_rcvd_size;
- sas_ha->notify_port_event(sas_phy, PORTE_BYTES_DMAED);
+ sas_notify_port_event(sas_phy, PORTE_BYTES_DMAED);
}
static struct hisi_sas_device *hisi_sas_alloc_dev(struct domain_device *device)
{
struct hisi_hba *hisi_hba = dev_to_hisi_hba(device);
struct hisi_sas_device *sas_dev = NULL;
- unsigned long flags;
int last = hisi_hba->last_dev_id;
int first = (hisi_hba->last_dev_id + 1) % HISI_SAS_MAX_DEVICES;
int i;
- spin_lock_irqsave(&hisi_hba->lock, flags);
+ spin_lock(&hisi_hba->lock);
for (i = first; i != last; i %= HISI_SAS_MAX_DEVICES) {
if (hisi_hba->devices[i].dev_type == SAS_PHY_UNUSED) {
int queue = i % hisi_hba->queue_count;
@@ -570,45 +679,77 @@
hisi_hba->devices[i].device_id = i;
sas_dev = &hisi_hba->devices[i];
- sas_dev->dev_status = HISI_SAS_DEV_NORMAL;
+ sas_dev->dev_status = HISI_SAS_DEV_INIT;
sas_dev->dev_type = device->dev_type;
sas_dev->hisi_hba = hisi_hba;
sas_dev->sas_device = device;
sas_dev->dq = dq;
+ spin_lock_init(&sas_dev->lock);
INIT_LIST_HEAD(&hisi_hba->devices[i].list);
break;
}
i++;
}
hisi_hba->last_dev_id = i;
- spin_unlock_irqrestore(&hisi_hba->lock, flags);
+ spin_unlock(&hisi_hba->lock);
return sas_dev;
}
-#define HISI_SAS_SRST_ATA_DISK_CNT 3
+#define HISI_SAS_DISK_RECOVER_CNT 3
static int hisi_sas_init_device(struct domain_device *device)
{
int rc = TMF_RESP_FUNC_COMPLETE;
struct scsi_lun lun;
struct hisi_sas_tmf_task tmf_task;
- int retry = HISI_SAS_SRST_ATA_DISK_CNT;
+ int retry = HISI_SAS_DISK_RECOVER_CNT;
struct hisi_hba *hisi_hba = dev_to_hisi_hba(device);
+ struct device *dev = hisi_hba->dev;
+ struct sas_phy *local_phy;
switch (device->dev_type) {
case SAS_END_DEVICE:
int_to_scsilun(0, &lun);
tmf_task.tmf = TMF_CLEAR_TASK_SET;
- rc = hisi_sas_debug_issue_ssp_tmf(device, lun.scsi_lun,
- &tmf_task);
- if (rc == TMF_RESP_FUNC_COMPLETE)
- hisi_sas_release_task(hisi_hba, device);
+ while (retry-- > 0) {
+ rc = hisi_sas_debug_issue_ssp_tmf(device, lun.scsi_lun,
+ &tmf_task);
+ if (rc == TMF_RESP_FUNC_COMPLETE) {
+ hisi_sas_release_task(hisi_hba, device);
+ break;
+ }
+ }
break;
case SAS_SATA_DEV:
case SAS_SATA_PM:
case SAS_SATA_PM_PORT:
case SAS_SATA_PENDING:
+ /*
+ * send HARD RESET to clear previous affiliation of
+ * STP target port
+ */
+ local_phy = sas_get_local_phy(device);
+ if (!scsi_is_sas_phy_local(local_phy) &&
+ !test_bit(HISI_SAS_RESET_BIT, &hisi_hba->flags)) {
+ unsigned long deadline = ata_deadline(jiffies, 20000);
+ struct sata_device *sata_dev = &device->sata_dev;
+ struct ata_host *ata_host = sata_dev->ata_host;
+ struct ata_port_operations *ops = ata_host->ops;
+ struct ata_port *ap = sata_dev->ap;
+ struct ata_link *link;
+ unsigned int classes;
+
+ ata_for_each_link(link, ap, EDGE)
+ rc = ops->hardreset(link, &classes,
+ deadline);
+ }
+ sas_put_local_phy(local_phy);
+ if (rc) {
+ dev_warn(dev, "SATA disk hardreset fail: %d\n", rc);
+ return rc;
+ }
+
while (retry-- > 0) {
rc = hisi_sas_softreset_ata_disk(device);
if (!rc)
@@ -643,7 +784,7 @@
device->lldd_dev = sas_dev;
hisi_hba->hw->setup_itct(hisi_hba, sas_dev);
- if (parent_dev && DEV_IS_EXPANDER(parent_dev->dev_type)) {
+ if (parent_dev && dev_is_expander(parent_dev->dev_type)) {
int phy_no;
u8 phy_num = parent_dev->ex_dev.num_phys;
struct ex_phy *phy;
@@ -671,6 +812,7 @@
rc = hisi_sas_init_device(device);
if (rc)
goto err_out;
+ sas_dev->dev_status = HISI_SAS_DEV_NORMAL;
return 0;
err_out:
@@ -753,6 +895,33 @@
}
EXPORT_SYMBOL_GPL(hisi_sas_notify_phy_event);
+static void hisi_sas_wait_phyup_timedout(struct timer_list *t)
+{
+ struct hisi_sas_phy *phy = from_timer(phy, t, timer);
+ struct hisi_hba *hisi_hba = phy->hisi_hba;
+ struct device *dev = hisi_hba->dev;
+ int phy_no = phy->sas_phy.id;
+
+ dev_warn(dev, "phy%d wait phyup timeout, issuing link reset\n", phy_no);
+ hisi_sas_notify_phy_event(phy, HISI_PHYE_LINK_RESET);
+}
+
+void hisi_sas_phy_oob_ready(struct hisi_hba *hisi_hba, int phy_no)
+{
+ struct hisi_sas_phy *phy = &hisi_hba->phy[phy_no];
+ struct device *dev = hisi_hba->dev;
+
+ dev_dbg(dev, "phy%d OOB ready\n", phy_no);
+ if (phy->phy_attached)
+ return;
+
+ if (!timer_pending(&phy->timer)) {
+ phy->timer.expires = jiffies + HISI_SAS_WAIT_PHYUP_TIMEOUT * HZ;
+ add_timer(&phy->timer);
+ }
+}
+EXPORT_SYMBOL_GPL(hisi_sas_phy_oob_ready);
+
static void hisi_sas_phy_init(struct hisi_hba *hisi_hba, int phy_no)
{
struct hisi_sas_phy *phy = &hisi_hba->phy[phy_no];
@@ -781,7 +950,33 @@
INIT_WORK(&phy->works[i], hisi_sas_phye_fns[i]);
spin_lock_init(&phy->lock);
+
+ timer_setup(&phy->timer, hisi_sas_wait_phyup_timedout, 0);
}
+
+/* Wrapper to ensure we track hisi_sas_phy.enable properly */
+void hisi_sas_phy_enable(struct hisi_hba *hisi_hba, int phy_no, int enable)
+{
+ struct hisi_sas_phy *phy = &hisi_hba->phy[phy_no];
+ struct asd_sas_phy *aphy = &phy->sas_phy;
+ struct sas_phy *sphy = aphy->phy;
+ unsigned long flags;
+
+ spin_lock_irqsave(&phy->lock, flags);
+
+ if (enable) {
+ /* We may have been enabled already; if so, don't touch */
+ if (!phy->enable)
+ sphy->negotiated_linkrate = SAS_LINK_RATE_UNKNOWN;
+ hisi_hba->hw->phy_start(hisi_hba, phy_no);
+ } else {
+ sphy->negotiated_linkrate = SAS_PHY_DISABLED;
+ hisi_hba->hw->phy_disable(hisi_hba, phy_no);
+ }
+ phy->enable = enable;
+ spin_unlock_irqrestore(&phy->lock, flags);
+}
+EXPORT_SYMBOL_GPL(hisi_sas_phy_enable);
static void hisi_sas_port_notify_formed(struct asd_sas_phy *sas_phy)
{
@@ -867,25 +1062,30 @@
struct hisi_sas_device *sas_dev = device->lldd_dev;
struct hisi_hba *hisi_hba = dev_to_hisi_hba(device);
struct device *dev = hisi_hba->dev;
+ int ret = 0;
dev_info(dev, "dev[%d:%x] is gone\n",
sas_dev->device_id, sas_dev->dev_type);
+ down(&hisi_hba->sem);
if (!test_bit(HISI_SAS_RESET_BIT, &hisi_hba->flags)) {
hisi_sas_internal_task_abort(hisi_hba, device,
- HISI_SAS_INT_ABT_DEV, 0);
+ HISI_SAS_INT_ABT_DEV, 0);
hisi_sas_dereg_device(hisi_hba, device);
- down(&hisi_hba->sem);
- hisi_hba->hw->clear_itct(hisi_hba, sas_dev);
- up(&hisi_hba->sem);
+ ret = hisi_hba->hw->clear_itct(hisi_hba, sas_dev);
device->lldd_dev = NULL;
}
if (hisi_hba->hw->free_device)
hisi_hba->hw->free_device(sas_dev);
- sas_dev->dev_type = SAS_PHY_UNUSED;
+
+ /* Don't mark it as SAS_PHY_UNUSED if failed to clear ITCT */
+ if (!ret)
+ sas_dev->dev_type = SAS_PHY_UNUSED;
+ sas_dev->sas_device = NULL;
+ up(&hisi_hba->sem);
}
static int hisi_sas_queue_command(struct sas_task *task, gfp_t gfp_flags)
@@ -920,10 +1120,10 @@
sas_phy->phy->maximum_linkrate = max;
sas_phy->phy->minimum_linkrate = min;
- hisi_hba->hw->phy_disable(hisi_hba, phy_no);
+ hisi_sas_phy_enable(hisi_hba, phy_no, 0);
msleep(100);
hisi_hba->hw->phy_set_linkrate(hisi_hba, phy_no, &_r);
- hisi_hba->hw->phy_start(hisi_hba, phy_no);
+ hisi_sas_phy_enable(hisi_hba, phy_no, 1);
return 0;
}
@@ -941,13 +1141,13 @@
break;
case PHY_FUNC_LINK_RESET:
- hisi_hba->hw->phy_disable(hisi_hba, phy_no);
+ hisi_sas_phy_enable(hisi_hba, phy_no, 0);
msleep(100);
- hisi_hba->hw->phy_start(hisi_hba, phy_no);
+ hisi_sas_phy_enable(hisi_hba, phy_no, 1);
break;
case PHY_FUNC_DISABLE:
- hisi_hba->hw->phy_disable(hisi_hba, phy_no);
+ hisi_sas_phy_enable(hisi_hba, phy_no, 0);
break;
case PHY_FUNC_SET_LINK_RATE:
@@ -957,7 +1157,7 @@
hisi_hba->hw->get_events(hisi_hba, phy_no);
break;
}
- /* fallthru */
+ fallthrough;
case PHY_FUNC_RELEASE_SPINUP_HOLD:
default:
return -EOPNOTSUPP;
@@ -1019,7 +1219,7 @@
task->task_done = hisi_sas_task_done;
task->slow_task->timer.function = hisi_sas_tmf_timedout;
- task->slow_task->timer.expires = jiffies + TASK_TIMEOUT*HZ;
+ task->slow_task->timer.expires = jiffies + TASK_TIMEOUT * HZ;
add_timer(&task->slow_task->timer);
res = hisi_sas_task_exec(task, GFP_KERNEL, 1, tmf);
@@ -1043,10 +1243,10 @@
struct hisi_sas_cq *cq =
&hisi_hba->cq[slot->dlvry_queue];
/*
- * flush tasklet to avoid free'ing task
+ * sync irq to avoid free'ing task
* before using task in IO completion
*/
- tasklet_kill(&cq->tasklet);
+ synchronize_irq(cq->irq_no);
slot->task = NULL;
}
@@ -1072,8 +1272,7 @@
/* no error, but return the number of bytes of
* underrun
*/
- dev_warn(dev, "abort tmf: task to dev %016llx "
- "resp: 0x%x sts 0x%x underrun\n",
+ dev_warn(dev, "abort tmf: task to dev %016llx resp: 0x%x sts 0x%x underrun\n",
SAS_ADDR(device->sas_addr),
task->task_status.resp,
task->task_status.stat);
@@ -1088,10 +1287,16 @@
break;
}
- dev_warn(dev, "abort tmf: task to dev "
- "%016llx resp: 0x%x status 0x%x\n",
- SAS_ADDR(device->sas_addr), task->task_status.resp,
- task->task_status.stat);
+ if (task->task_status.resp == SAS_TASK_COMPLETE &&
+ task->task_status.stat == SAS_OPEN_REJECT) {
+ dev_warn(dev, "abort tmf: open reject failed\n");
+ res = -EIO;
+ } else {
+ dev_warn(dev, "abort tmf: task to dev %016llx resp: 0x%x status 0x%x\n",
+ SAS_ADDR(device->sas_addr),
+ task->task_status.resp,
+ task->task_status.stat);
+ }
sas_free_task(task);
task = NULL;
}
@@ -1203,15 +1408,13 @@
device->linkrate = phy->sas_phy.linkrate;
hisi_hba->hw->setup_itct(hisi_hba, sas_dev);
- } else
+ } else if (!port->port_attached)
port->id = 0xff;
}
}
-static void hisi_sas_rescan_topology(struct hisi_hba *hisi_hba, u32 old_state,
- u32 state)
+static void hisi_sas_rescan_topology(struct hisi_hba *hisi_hba, u32 state)
{
- struct sas_ha_struct *sas_ha = &hisi_hba->sha;
struct asd_sas_port *_sas_port = NULL;
int phy_no;
@@ -1219,7 +1422,7 @@
struct hisi_sas_phy *phy = &hisi_hba->phy[phy_no];
struct asd_sas_phy *sas_phy = &phy->sas_phy;
struct asd_sas_port *sas_port = sas_phy->port;
- bool do_port_check = !!(_sas_port != sas_port);
+ bool do_port_check = _sas_port != sas_port;
if (!sas_phy->phy->enabled)
continue;
@@ -1231,14 +1434,13 @@
_sas_port = sas_port;
- if (DEV_IS_EXPANDER(dev->dev_type))
- sas_ha->notify_port_event(sas_phy,
+ if (dev_is_expander(dev->dev_type))
+ sas_notify_port_event(sas_phy,
PORTE_BROADCAST_RCVD);
}
- } else if (old_state & (1 << phy_no))
- /* PHY down but was up before */
+ } else {
hisi_sas_phy_down(hisi_hba, phy_no, 0);
-
+ }
}
}
@@ -1318,7 +1520,7 @@
struct domain_device *port_dev = sas_port->port_dev;
struct domain_device *device;
- if (!port_dev || !DEV_IS_EXPANDER(port_dev->dev_type))
+ if (!port_dev || !dev_is_expander(port_dev->dev_type))
continue;
/* Try to find a SATA device */
@@ -1354,23 +1556,21 @@
void hisi_sas_controller_reset_done(struct hisi_hba *hisi_hba)
{
struct Scsi_Host *shost = hisi_hba->shost;
- u32 state;
/* Init and wait for PHYs to come up and all libsas event finished. */
hisi_hba->hw->phys_init(hisi_hba);
msleep(1000);
hisi_sas_refresh_port_id(hisi_hba);
clear_bit(HISI_SAS_REJECT_CMD_BIT, &hisi_hba->flags);
- up(&hisi_hba->sem);
if (hisi_hba->reject_stp_links_msk)
hisi_sas_terminate_stp_reject(hisi_hba);
hisi_sas_reset_init_all_devices(hisi_hba);
+ up(&hisi_hba->sem);
scsi_unblock_requests(shost);
clear_bit(HISI_SAS_RESET_BIT, &hisi_hba->flags);
- state = hisi_hba->hw->get_phys_state(hisi_hba);
- hisi_sas_rescan_topology(hisi_hba, hisi_hba->phy_state, state);
+ hisi_sas_rescan_topology(hisi_hba, hisi_hba->phy_state);
}
EXPORT_SYMBOL_GPL(hisi_sas_controller_reset_done);
@@ -1379,6 +1579,9 @@
struct device *dev = hisi_hba->dev;
struct Scsi_Host *shost = hisi_hba->shost;
int rc;
+
+ if (hisi_sas_debugfs_enable && hisi_hba->debugfs_itct[0].itct)
+ queue_work(hisi_hba->wq, &hisi_hba->debugfs_work);
if (!hisi_hba->hw->soft_reset)
return -1;
@@ -1429,11 +1632,11 @@
if (slot) {
/*
- * flush tasklet to avoid free'ing task
+ * sync irq to avoid free'ing task
* before using task in IO completion
*/
cq = &hisi_hba->cq[slot->dlvry_queue];
- tasklet_kill(&cq->tasklet);
+ synchronize_irq(cq->irq_no);
}
spin_unlock_irqrestore(&task->task_state_lock, flags);
rc = TMF_RESP_FUNC_COMPLETE;
@@ -1442,16 +1645,15 @@
task->task_state_flags |= SAS_TASK_STATE_ABORTED;
spin_unlock_irqrestore(&task->task_state_lock, flags);
- sas_dev->dev_status = HISI_SAS_DEV_EH;
if (task->lldd_task && task->task_proto & SAS_PROTOCOL_SSP) {
struct scsi_cmnd *cmnd = task->uldd_task;
struct hisi_sas_slot *slot = task->lldd_task;
- u32 tag = slot->idx;
+ u16 tag = slot->idx;
int rc2;
int_to_scsilun(cmnd->device->lun, &lun);
tmf_task.tmf = TMF_ABORT_TASK;
- tmf_task.tag_of_task_to_be_managed = cpu_to_le16(tag);
+ tmf_task.tag_of_task_to_be_managed = tag;
rc = hisi_sas_debug_issue_ssp_tmf(task->dev, lun.scsi_lun,
&tmf_task);
@@ -1478,7 +1680,8 @@
task->task_proto & SAS_PROTOCOL_STP) {
if (task->dev->dev_type == SAS_SATA_DEV) {
rc = hisi_sas_internal_task_abort(hisi_hba, device,
- HISI_SAS_INT_ABT_DEV, 0);
+ HISI_SAS_INT_ABT_DEV,
+ 0);
if (rc < 0) {
dev_err(dev, "abort task: internal abort failed\n");
goto out;
@@ -1493,14 +1696,14 @@
struct hisi_sas_cq *cq = &hisi_hba->cq[slot->dlvry_queue];
rc = hisi_sas_internal_task_abort(hisi_hba, device,
- HISI_SAS_INT_ABT_CMD, tag);
+ HISI_SAS_INT_ABT_CMD, tag);
if (((rc < 0) || (rc == TMF_RESP_FUNC_FAILED)) &&
task->lldd_task) {
/*
- * flush tasklet to avoid free'ing task
+ * sync irq to avoid free'ing task
* before using task in IO completion
*/
- tasklet_kill(&cq->tasklet);
+ synchronize_irq(cq->irq_no);
slot->task = NULL;
}
}
@@ -1516,10 +1719,10 @@
struct hisi_hba *hisi_hba = dev_to_hisi_hba(device);
struct device *dev = hisi_hba->dev;
struct hisi_sas_tmf_task tmf_task;
- int rc = TMF_RESP_FUNC_FAILED;
+ int rc;
rc = hisi_sas_internal_task_abort(hisi_hba, device,
- HISI_SAS_INT_ABT_DEV, 0);
+ HISI_SAS_INT_ABT_DEV, 0);
if (rc < 0) {
dev_err(dev, "abort task set: internal abort rc=%d\n", rc);
return TMF_RESP_FUNC_FAILED;
@@ -1537,8 +1740,8 @@
static int hisi_sas_clear_aca(struct domain_device *device, u8 *lun)
{
- int rc = TMF_RESP_FUNC_FAILED;
struct hisi_sas_tmf_task tmf_task;
+ int rc;
tmf_task.tmf = TMF_CLEAR_ACA;
rc = hisi_sas_debug_issue_ssp_tmf(device, lun, &tmf_task);
@@ -1549,24 +1752,37 @@
static int hisi_sas_debug_I_T_nexus_reset(struct domain_device *device)
{
struct sas_phy *local_phy = sas_get_local_phy(device);
- int rc, reset_type = (device->dev_type == SAS_SATA_DEV ||
- (device->tproto & SAS_PROTOCOL_STP)) ? 0 : 1;
+ struct hisi_sas_device *sas_dev = device->lldd_dev;
struct hisi_hba *hisi_hba = dev_to_hisi_hba(device);
struct sas_ha_struct *sas_ha = &hisi_hba->sha;
- struct asd_sas_phy *sas_phy = sas_ha->sas_phy[local_phy->number];
- struct hisi_sas_phy *phy = container_of(sas_phy,
- struct hisi_sas_phy, sas_phy);
DECLARE_COMPLETION_ONSTACK(phyreset);
+ int rc, reset_type;
+
+ if (!local_phy->enabled) {
+ sas_put_local_phy(local_phy);
+ return -ENODEV;
+ }
if (scsi_is_sas_phy_local(local_phy)) {
+ struct asd_sas_phy *sas_phy =
+ sas_ha->sas_phy[local_phy->number];
+ struct hisi_sas_phy *phy =
+ container_of(sas_phy, struct hisi_sas_phy, sas_phy);
phy->in_reset = 1;
phy->reset_completion = &phyreset;
}
+
+ reset_type = (sas_dev->dev_status == HISI_SAS_DEV_INIT ||
+ !dev_is_sata(device)) ? true : false;
rc = sas_phy_reset(local_phy, reset_type);
sas_put_local_phy(local_phy);
if (scsi_is_sas_phy_local(local_phy)) {
+ struct asd_sas_phy *sas_phy =
+ sas_ha->sas_phy[local_phy->number];
+ struct hisi_sas_phy *phy =
+ container_of(sas_phy, struct hisi_sas_phy, sas_phy);
int ret = wait_for_completion_timeout(&phyreset, 2 * HZ);
unsigned long flags;
@@ -1578,30 +1794,37 @@
/* report PHY down if timed out */
if (!ret)
hisi_sas_phy_down(hisi_hba, sas_phy->id, 0);
- } else
- msleep(2000);
+ } else if (sas_dev->dev_status != HISI_SAS_DEV_INIT) {
+ /*
+ * If in init state, we rely on caller to wait for link to be
+ * ready; otherwise, except phy reset is fail, delay.
+ */
+ if (!rc)
+ msleep(2000);
+ }
return rc;
}
static int hisi_sas_I_T_nexus_reset(struct domain_device *device)
{
- struct hisi_sas_device *sas_dev = device->lldd_dev;
struct hisi_hba *hisi_hba = dev_to_hisi_hba(device);
struct device *dev = hisi_hba->dev;
- int rc = TMF_RESP_FUNC_FAILED;
-
- if (sas_dev->dev_status != HISI_SAS_DEV_EH)
- return TMF_RESP_FUNC_FAILED;
- sas_dev->dev_status = HISI_SAS_DEV_NORMAL;
+ int rc;
rc = hisi_sas_internal_task_abort(hisi_hba, device,
- HISI_SAS_INT_ABT_DEV, 0);
+ HISI_SAS_INT_ABT_DEV, 0);
if (rc < 0) {
dev_err(dev, "I_T nexus reset: internal abort (%d)\n", rc);
return TMF_RESP_FUNC_FAILED;
}
hisi_sas_dereg_device(hisi_hba, device);
+
+ if (dev_is_sata(device)) {
+ rc = hisi_sas_softreset_ata_disk(device);
+ if (rc == TMF_RESP_FUNC_FAILED)
+ return TMF_RESP_FUNC_FAILED;
+ }
rc = hisi_sas_debug_I_T_nexus_reset(device);
@@ -1618,36 +1841,27 @@
struct device *dev = hisi_hba->dev;
int rc = TMF_RESP_FUNC_FAILED;
- sas_dev->dev_status = HISI_SAS_DEV_EH;
+ /* Clear internal IO and then lu reset */
+ rc = hisi_sas_internal_task_abort(hisi_hba, device,
+ HISI_SAS_INT_ABT_DEV, 0);
+ if (rc < 0) {
+ dev_err(dev, "lu_reset: internal abort failed\n");
+ goto out;
+ }
+ hisi_sas_dereg_device(hisi_hba, device);
+
if (dev_is_sata(device)) {
struct sas_phy *phy;
- /* Clear internal IO and then hardreset */
- rc = hisi_sas_internal_task_abort(hisi_hba, device,
- HISI_SAS_INT_ABT_DEV, 0);
- if (rc < 0) {
- dev_err(dev, "lu_reset: internal abort failed\n");
- goto out;
- }
- hisi_sas_dereg_device(hisi_hba, device);
-
phy = sas_get_local_phy(device);
- rc = sas_phy_reset(phy, 1);
+ rc = sas_phy_reset(phy, true);
if (rc == 0)
hisi_sas_release_task(hisi_hba, device);
sas_put_local_phy(phy);
} else {
struct hisi_sas_tmf_task tmf_task = { .tmf = TMF_LU_RESET };
-
- rc = hisi_sas_internal_task_abort(hisi_hba, device,
- HISI_SAS_INT_ABT_DEV, 0);
- if (rc < 0) {
- dev_err(dev, "lu_reset: internal abort failed\n");
- goto out;
- }
- hisi_sas_dereg_device(hisi_hba, device);
rc = hisi_sas_debug_issue_ssp_tmf(device, lun, &tmf_task);
if (rc == TMF_RESP_FUNC_COMPLETE)
@@ -1677,7 +1891,7 @@
struct domain_device *device = sas_dev->sas_device;
if ((sas_dev->dev_type == SAS_PHY_UNUSED) || !device ||
- DEV_IS_EXPANDER(device->dev_type))
+ dev_is_expander(device->dev_type))
continue;
rc = hisi_sas_debug_I_T_nexus_reset(device);
@@ -1705,7 +1919,7 @@
int_to_scsilun(cmnd->device->lun, &lun);
tmf_task.tmf = TMF_QUERY_TASK;
- tmf_task.tag_of_task_to_be_managed = cpu_to_le16(tag);
+ tmf_task.tag_of_task_to_be_managed = tag;
rc = hisi_sas_debug_issue_ssp_tmf(device,
lun.scsi_lun,
@@ -1728,7 +1942,7 @@
static int
hisi_sas_internal_abort_task_exec(struct hisi_hba *hisi_hba, int device_id,
struct sas_task *task, int abort_flag,
- int task_tag)
+ int task_tag, struct hisi_sas_dq *dq)
{
struct domain_device *device = task->dev;
struct hisi_sas_device *sas_dev = device->lldd_dev;
@@ -1737,9 +1951,8 @@
struct hisi_sas_slot *slot;
struct asd_sas_port *sas_port = device->port;
struct hisi_sas_cmd_hdr *cmd_hdr_base;
- struct hisi_sas_dq *dq = sas_dev->dq;
int dlvry_queue_slot, dlvry_queue, n_elem = 0, rc, slot_idx;
- unsigned long flags, flags_dq = 0;
+ unsigned long flags;
int wr_q_index;
if (unlikely(test_bit(HISI_SAS_REJECT_CMD_BIT, &hisi_hba->flags)))
@@ -1751,29 +1964,26 @@
port = to_hisi_sas_port(sas_port);
/* simply get a slot and send abort command */
- spin_lock_irqsave(&hisi_hba->lock, flags);
- rc = hisi_sas_slot_index_alloc(hisi_hba, &slot_idx);
- if (rc) {
- spin_unlock_irqrestore(&hisi_hba->lock, flags);
+ rc = hisi_sas_slot_index_alloc(hisi_hba, NULL);
+ if (rc < 0)
goto err_out;
- }
- spin_unlock_irqrestore(&hisi_hba->lock, flags);
+ slot_idx = rc;
slot = &hisi_hba->slot_info[slot_idx];
- spin_lock_irqsave(&dq->lock, flags_dq);
- wr_q_index = hisi_hba->hw->get_free_slot(hisi_hba, dq);
- if (wr_q_index < 0) {
- spin_unlock_irqrestore(&dq->lock, flags_dq);
- rc = -EAGAIN;
- goto err_out_tag;
- }
+ spin_lock(&dq->lock);
+ wr_q_index = dq->wr_point;
+ dq->wr_point = (dq->wr_point + 1) % HISI_SAS_QUEUE_SLOTS;
list_add_tail(&slot->delivery, &dq->list);
- spin_unlock_irqrestore(&dq->lock, flags_dq);
+ spin_unlock(&dq->lock);
+ spin_lock(&sas_dev->lock);
+ list_add_tail(&slot->entry, &sas_dev->list);
+ spin_unlock(&sas_dev->lock);
dlvry_queue = dq->id;
dlvry_queue_slot = wr_q_index;
+ slot->device_id = sas_dev->device_id;
slot->n_elem = n_elem;
slot->dlvry_queue = dlvry_queue;
slot->dlvry_queue_slot = dlvry_queue_slot;
@@ -1786,7 +1996,8 @@
memset(slot->cmd_hdr, 0, sizeof(struct hisi_sas_cmd_hdr));
memset(hisi_sas_cmd_hdr_addr_mem(slot), 0, HISI_SAS_COMMAND_TABLE_SZ);
- memset(hisi_sas_status_buf_addr_mem(slot), 0, HISI_SAS_STATUS_BUF_SZ);
+ memset(hisi_sas_status_buf_addr_mem(slot), 0,
+ sizeof(struct hisi_sas_err_record));
hisi_sas_task_prep_abort(hisi_hba, slot, device_id,
abort_flag, task_tag);
@@ -1794,20 +2005,14 @@
spin_lock_irqsave(&task->task_state_lock, flags);
task->task_state_flags |= SAS_TASK_AT_INITIATOR;
spin_unlock_irqrestore(&task->task_state_lock, flags);
-
WRITE_ONCE(slot->ready, 1);
/* send abort command to the chip */
- spin_lock_irqsave(&dq->lock, flags);
- list_add_tail(&slot->entry, &sas_dev->list);
+ spin_lock(&dq->lock);
hisi_hba->hw->start_delivery(dq);
- spin_unlock_irqrestore(&dq->lock, flags);
+ spin_unlock(&dq->lock);
return 0;
-err_out_tag:
- spin_lock_irqsave(&hisi_hba->lock, flags);
- hisi_sas_slot_index_free(hisi_hba, slot_idx);
- spin_unlock_irqrestore(&hisi_hba->lock, flags);
err_out:
dev_err(dev, "internal abort task prep: failed[%d]!\n", rc);
@@ -1815,18 +2020,19 @@
}
/**
- * hisi_sas_internal_task_abort -- execute an internal
+ * _hisi_sas_internal_task_abort -- execute an internal
* abort command for single IO command or a device
* @hisi_hba: host controller struct
* @device: domain device
* @abort_flag: mode of operation, device or single IO
* @tag: tag of IO to be aborted (only relevant to single
* IO mode)
+ * @dq: delivery queue for this internal abort command
*/
static int
-hisi_sas_internal_task_abort(struct hisi_hba *hisi_hba,
- struct domain_device *device,
- int abort_flag, int tag)
+_hisi_sas_internal_task_abort(struct hisi_hba *hisi_hba,
+ struct domain_device *device, int abort_flag,
+ int tag, struct hisi_sas_dq *dq)
{
struct sas_task *task;
struct hisi_sas_device *sas_dev = device->lldd_dev;
@@ -1850,11 +2056,11 @@
task->task_proto = device->tproto;
task->task_done = hisi_sas_task_done;
task->slow_task->timer.function = hisi_sas_tmf_timedout;
- task->slow_task->timer.expires = jiffies + INTERNAL_ABORT_TIMEOUT*HZ;
+ task->slow_task->timer.expires = jiffies + INTERNAL_ABORT_TIMEOUT * HZ;
add_timer(&task->slow_task->timer);
res = hisi_sas_internal_abort_task_exec(hisi_hba, sas_dev->device_id,
- task, abort_flag, tag);
+ task, abort_flag, tag, dq);
if (res) {
del_timer(&task->slow_task->timer);
dev_err(dev, "internal task abort: executing internal task failed: %d\n",
@@ -1866,6 +2072,9 @@
/* Internal abort timed out */
if ((task->task_state_flags & SAS_TASK_STATE_ABORTED)) {
+ if (hisi_sas_debugfs_enable && hisi_hba->debugfs_itct[0].itct)
+ queue_work(hisi_hba->wq, &hisi_hba->debugfs_work);
+
if (!(task->task_state_flags & SAS_TASK_STATE_DONE)) {
struct hisi_sas_slot *slot = task->lldd_task;
@@ -1873,13 +2082,14 @@
struct hisi_sas_cq *cq =
&hisi_hba->cq[slot->dlvry_queue];
/*
- * flush tasklet to avoid free'ing task
+ * sync irq to avoid free'ing task
* before using task in IO completion
*/
- tasklet_kill(&cq->tasklet);
+ synchronize_irq(cq->irq_no);
slot->task = NULL;
}
dev_err(dev, "internal task abort: timeout and not done.\n");
+
res = -EIO;
goto exit;
} else
@@ -1899,10 +2109,8 @@
}
exit:
- dev_dbg(dev, "internal task abort: task to dev %016llx task=%p "
- "resp: 0x%x sts 0x%x\n",
- SAS_ADDR(device->sas_addr),
- task,
+ dev_dbg(dev, "internal task abort: task to dev %016llx task=%pK resp: 0x%x sts 0x%x\n",
+ SAS_ADDR(device->sas_addr), task,
task->task_status.resp, /* 0 is complete, -1 is undelivered */
task->task_status.stat);
sas_free_task(task);
@@ -1910,13 +2118,49 @@
return res;
}
+static int
+hisi_sas_internal_task_abort(struct hisi_hba *hisi_hba,
+ struct domain_device *device,
+ int abort_flag, int tag)
+{
+ struct hisi_sas_slot *slot;
+ struct device *dev = hisi_hba->dev;
+ struct hisi_sas_dq *dq;
+ int i, rc;
+
+ switch (abort_flag) {
+ case HISI_SAS_INT_ABT_CMD:
+ slot = &hisi_hba->slot_info[tag];
+ dq = &hisi_hba->dq[slot->dlvry_queue];
+ return _hisi_sas_internal_task_abort(hisi_hba, device,
+ abort_flag, tag, dq);
+ case HISI_SAS_INT_ABT_DEV:
+ for (i = 0; i < hisi_hba->cq_nvecs; i++) {
+ struct hisi_sas_cq *cq = &hisi_hba->cq[i];
+ const struct cpumask *mask = cq->irq_mask;
+
+ if (mask && !cpumask_intersects(cpu_online_mask, mask))
+ continue;
+ dq = &hisi_hba->dq[i];
+ rc = _hisi_sas_internal_task_abort(hisi_hba, device,
+ abort_flag, tag,
+ dq);
+ if (rc)
+ return rc;
+ }
+ break;
+ default:
+ dev_err(dev, "Unrecognised internal abort flag (%d)\n",
+ abort_flag);
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
static void hisi_sas_port_formed(struct asd_sas_phy *sas_phy)
{
hisi_sas_port_notify_formed(sas_phy);
-}
-
-static void hisi_sas_port_deformed(struct asd_sas_phy *sas_phy)
-{
}
static int hisi_sas_write_gpio(struct sas_ha_struct *sha, u8 reg_type,
@@ -1935,23 +2179,24 @@
{
struct asd_sas_phy *sas_phy = &phy->sas_phy;
struct sas_phy *sphy = sas_phy->phy;
- struct sas_phy_data *d = sphy->hostdata;
+ unsigned long flags;
phy->phy_attached = 0;
phy->phy_type = 0;
phy->port = NULL;
- if (d->enable)
+ spin_lock_irqsave(&phy->lock, flags);
+ if (phy->enable)
sphy->negotiated_linkrate = SAS_LINK_RATE_UNKNOWN;
else
sphy->negotiated_linkrate = SAS_PHY_DISABLED;
+ spin_unlock_irqrestore(&phy->lock, flags);
}
void hisi_sas_phy_down(struct hisi_hba *hisi_hba, int phy_no, int rdy)
{
struct hisi_sas_phy *phy = &hisi_hba->phy[phy_no];
struct asd_sas_phy *sas_phy = &phy->sas_phy;
- struct sas_ha_struct *sas_ha = &hisi_hba->sha;
struct device *dev = hisi_hba->dev;
if (rdy) {
@@ -1967,7 +2212,7 @@
return;
}
/* Phy down and not ready */
- sas_ha->notify_phy_event(sas_phy, PHYE_LOSS_OF_SIGNAL);
+ sas_notify_phy_event(sas_phy, PHYE_LOSS_OF_SIGNAL);
sas_phy_disconnected(sas_phy);
if (port) {
@@ -1985,26 +2230,33 @@
}
EXPORT_SYMBOL_GPL(hisi_sas_phy_down);
-void hisi_sas_kill_tasklets(struct hisi_hba *hisi_hba)
+void hisi_sas_sync_irqs(struct hisi_hba *hisi_hba)
{
int i;
- for (i = 0; i < hisi_hba->queue_count; i++) {
+ for (i = 0; i < hisi_hba->cq_nvecs; i++) {
struct hisi_sas_cq *cq = &hisi_hba->cq[i];
- tasklet_kill(&cq->tasklet);
+ synchronize_irq(cq->irq_no);
}
}
-EXPORT_SYMBOL_GPL(hisi_sas_kill_tasklets);
+EXPORT_SYMBOL_GPL(hisi_sas_sync_irqs);
+
+int hisi_sas_host_reset(struct Scsi_Host *shost, int reset_type)
+{
+ struct hisi_hba *hisi_hba = shost_priv(shost);
+
+ if (reset_type != SCSI_ADAPTER_RESET)
+ return -EOPNOTSUPP;
+
+ queue_work(hisi_hba->wq, &hisi_hba->rst_work);
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(hisi_sas_host_reset);
struct scsi_transport_template *hisi_sas_stt;
EXPORT_SYMBOL_GPL(hisi_sas_stt);
-
-struct device_attribute *host_attrs[] = {
- &dev_attr_phy_event_threshold,
- NULL,
-};
-EXPORT_SYMBOL_GPL(host_attrs);
static struct sas_domain_function_template hisi_sas_transport_ops = {
.lldd_dev_found = hisi_sas_dev_found,
@@ -2017,22 +2269,25 @@
.lldd_I_T_nexus_reset = hisi_sas_I_T_nexus_reset,
.lldd_lu_reset = hisi_sas_lu_reset,
.lldd_query_task = hisi_sas_query_task,
- .lldd_clear_nexus_ha = hisi_sas_clear_nexus_ha,
+ .lldd_clear_nexus_ha = hisi_sas_clear_nexus_ha,
.lldd_port_formed = hisi_sas_port_formed,
- .lldd_port_deformed = hisi_sas_port_deformed,
- .lldd_write_gpio = hisi_sas_write_gpio,
+ .lldd_write_gpio = hisi_sas_write_gpio,
};
void hisi_sas_init_mem(struct hisi_hba *hisi_hba)
{
- int i, s, max_command_entries = hisi_hba->hw->max_command_entries;
+ int i, s, j, max_command_entries = HISI_SAS_MAX_COMMANDS;
+ struct hisi_sas_breakpoint *sata_breakpoint = hisi_hba->sata_breakpoint;
for (i = 0; i < hisi_hba->queue_count; i++) {
struct hisi_sas_cq *cq = &hisi_hba->cq[i];
struct hisi_sas_dq *dq = &hisi_hba->dq[i];
+ struct hisi_sas_cmd_hdr *cmd_hdr = hisi_hba->cmd_hdr[i];
- s = sizeof(struct hisi_sas_cmd_hdr) * HISI_SAS_QUEUE_SLOTS;
- memset(hisi_hba->cmd_hdr[i], 0, s);
+ s = sizeof(struct hisi_sas_cmd_hdr);
+ for (j = 0; j < HISI_SAS_QUEUE_SLOTS; j++)
+ memset(&cmd_hdr[j], 0, s);
+
dq->wr_point = 0;
s = hisi_hba->hw->complete_hdr_size * HISI_SAS_QUEUE_SLOTS;
@@ -2049,15 +2304,16 @@
s = max_command_entries * sizeof(struct hisi_sas_breakpoint);
memset(hisi_hba->breakpoint, 0, s);
- s = HISI_SAS_MAX_ITCT_ENTRIES * sizeof(struct hisi_sas_sata_breakpoint);
- memset(hisi_hba->sata_breakpoint, 0, s);
+ s = sizeof(struct hisi_sas_sata_breakpoint);
+ for (j = 0; j < HISI_SAS_MAX_ITCT_ENTRIES; j++)
+ memset(&sata_breakpoint[j], 0, s);
}
EXPORT_SYMBOL_GPL(hisi_sas_init_mem);
-int hisi_sas_alloc(struct hisi_hba *hisi_hba, struct Scsi_Host *shost)
+int hisi_sas_alloc(struct hisi_hba *hisi_hba)
{
struct device *dev = hisi_hba->dev;
- int i, j, s, max_command_entries = hisi_hba->hw->max_command_entries;
+ int i, j, s, max_command_entries = HISI_SAS_MAX_COMMANDS;
int max_command_entries_ru, sz_slot_buf_ru;
int blk_cnt, slots_per_blk;
@@ -2072,7 +2328,7 @@
for (i = 0; i < HISI_SAS_MAX_DEVICES; i++) {
hisi_hba->devices[i].dev_type = SAS_PHY_UNUSED;
hisi_hba->devices[i].device_id = i;
- hisi_hba->devices[i].dev_status = HISI_SAS_DEV_NORMAL;
+ hisi_hba->devices[i].dev_status = HISI_SAS_DEV_INIT;
}
for (i = 0; i < hisi_hba->queue_count; i++) {
@@ -2111,7 +2367,6 @@
GFP_KERNEL);
if (!hisi_hba->itct)
goto err_out;
- memset(hisi_hba->itct, 0, s);
hisi_hba->slot_info = devm_kcalloc(dev, max_command_entries,
sizeof(struct hisi_sas_slot),
@@ -2121,19 +2376,24 @@
/* roundup to avoid overly large block size */
max_command_entries_ru = roundup(max_command_entries, 64);
- sz_slot_buf_ru = roundup(sizeof(struct hisi_sas_slot_buf_table), 64);
- s = lcm(max_command_entries_ru, sz_slot_buf_ru);
+ if (hisi_hba->prot_mask & HISI_SAS_DIX_PROT_MASK)
+ sz_slot_buf_ru = sizeof(struct hisi_sas_slot_dif_buf_table);
+ else
+ sz_slot_buf_ru = sizeof(struct hisi_sas_slot_buf_table);
+ sz_slot_buf_ru = roundup(sz_slot_buf_ru, 64);
+ s = max(lcm(max_command_entries_ru, sz_slot_buf_ru), PAGE_SIZE);
blk_cnt = (max_command_entries_ru * sz_slot_buf_ru) / s;
slots_per_blk = s / sz_slot_buf_ru;
- for (i = 0; i < blk_cnt; i++) {
- struct hisi_sas_slot_buf_table *buf;
- dma_addr_t buf_dma;
- int slot_index = i * slots_per_blk;
- buf = dmam_alloc_coherent(dev, s, &buf_dma, GFP_KERNEL);
+ for (i = 0; i < blk_cnt; i++) {
+ int slot_index = i * slots_per_blk;
+ dma_addr_t buf_dma;
+ void *buf;
+
+ buf = dmam_alloc_coherent(dev, s, &buf_dma,
+ GFP_KERNEL);
if (!buf)
goto err_out;
- memset(buf, 0, s);
for (j = 0; j < slots_per_blk; j++, slot_index++) {
struct hisi_sas_slot *slot;
@@ -2143,8 +2403,8 @@
slot->buf_dma = buf_dma;
slot->idx = slot_index;
- buf++;
- buf_dma += sizeof(*buf);
+ buf += sz_slot_buf_ru;
+ buf_dma += sz_slot_buf_ru;
}
}
@@ -2180,9 +2440,9 @@
GFP_KERNEL);
if (!hisi_hba->sata_breakpoint)
goto err_out;
- hisi_sas_init_mem(hisi_hba);
hisi_sas_slot_index_init(hisi_hba);
+ hisi_hba->last_slot_index = HISI_SAS_UNRESERVED_IPTT;
hisi_hba->wq = create_singlethread_workqueue(dev_name(dev));
if (!hisi_hba->wq) {
@@ -2198,6 +2458,14 @@
void hisi_sas_free(struct hisi_hba *hisi_hba)
{
+ int i;
+
+ for (i = 0; i < hisi_hba->n_phy; i++) {
+ struct hisi_sas_phy *phy = &hisi_hba->phy[i];
+
+ del_timer_sync(&phy->timer);
+ }
+
if (hisi_hba->wq)
destroy_workqueue(hisi_hba->wq);
}
@@ -2250,22 +2518,19 @@
if (device_property_read_u32(dev, "ctrl-reset-reg",
&hisi_hba->ctrl_reset_reg)) {
- dev_err(dev,
- "could not get property ctrl-reset-reg\n");
+ dev_err(dev, "could not get property ctrl-reset-reg\n");
return -ENOENT;
}
if (device_property_read_u32(dev, "ctrl-reset-sts-reg",
&hisi_hba->ctrl_reset_sts_reg)) {
- dev_err(dev,
- "could not get property ctrl-reset-sts-reg\n");
+ dev_err(dev, "could not get property ctrl-reset-sts-reg\n");
return -ENOENT;
}
if (device_property_read_u32(dev, "ctrl-clock-ena-reg",
&hisi_hba->ctrl_clock_ena_reg)) {
- dev_err(dev,
- "could not get property ctrl-clock-ena-reg\n");
+ dev_err(dev, "could not get property ctrl-clock-ena-reg\n");
return -ENOENT;
}
}
@@ -2298,6 +2563,7 @@
struct Scsi_Host *shost;
struct hisi_hba *hisi_hba;
struct device *dev = &pdev->dev;
+ int error;
shost = scsi_host_alloc(hw->sht, sizeof(*hisi_hba));
if (!shost) {
@@ -2318,14 +2584,16 @@
if (hisi_sas_get_fw_info(hisi_hba) < 0)
goto err_out;
- if (dma_set_mask_and_coherent(dev, DMA_BIT_MASK(64)) &&
- dma_set_mask_and_coherent(dev, DMA_BIT_MASK(32))) {
+ error = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(64));
+ if (error)
+ error = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(32));
+
+ if (error) {
dev_err(dev, "No usable DMA addressing method\n");
goto err_out;
}
- res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- hisi_hba->regs = devm_ioremap_resource(dev, res);
+ hisi_hba->regs = devm_platform_ioremap_resource(pdev, 0);
if (IS_ERR(hisi_hba->regs))
goto err_out;
@@ -2336,7 +2604,7 @@
goto err_out;
}
- if (hisi_sas_alloc(hisi_hba, shost)) {
+ if (hisi_sas_alloc(hisi_hba)) {
hisi_sas_free(hisi_hba);
goto err_out;
}
@@ -2385,9 +2653,13 @@
shost->max_lun = ~0;
shost->max_channel = 1;
shost->max_cmd_len = 16;
- shost->sg_tablesize = min_t(u16, SG_ALL, HISI_SAS_SGE_PAGE_CNT);
- shost->can_queue = hisi_hba->hw->max_command_entries;
- shost->cmd_per_lun = hisi_hba->hw->max_command_entries;
+ if (hisi_hba->hw->slot_index_alloc) {
+ shost->can_queue = HISI_SAS_MAX_COMMANDS;
+ shost->cmd_per_lun = HISI_SAS_MAX_COMMANDS;
+ } else {
+ shost->can_queue = HISI_SAS_UNRESERVED_IPTT;
+ shost->cmd_per_lun = HISI_SAS_UNRESERVED_IPTT;
+ }
sha->sas_ha_name = DRV_NAME;
sha->dev = hisi_hba->dev;
@@ -2420,11 +2692,1354 @@
err_out_register_ha:
scsi_remove_host(shost);
err_out_ha:
+ hisi_sas_debugfs_exit(hisi_hba);
hisi_sas_free(hisi_hba);
scsi_host_put(shost);
return rc;
}
EXPORT_SYMBOL_GPL(hisi_sas_probe);
+
+struct dentry *hisi_sas_debugfs_dir;
+
+static void hisi_sas_debugfs_snapshot_cq_reg(struct hisi_hba *hisi_hba)
+{
+ int queue_entry_size = hisi_hba->hw->complete_hdr_size;
+ int dump_index = hisi_hba->debugfs_dump_index;
+ int i;
+
+ for (i = 0; i < hisi_hba->queue_count; i++)
+ memcpy(hisi_hba->debugfs_cq[dump_index][i].complete_hdr,
+ hisi_hba->complete_hdr[i],
+ HISI_SAS_QUEUE_SLOTS * queue_entry_size);
+}
+
+static void hisi_sas_debugfs_snapshot_dq_reg(struct hisi_hba *hisi_hba)
+{
+ int queue_entry_size = sizeof(struct hisi_sas_cmd_hdr);
+ int dump_index = hisi_hba->debugfs_dump_index;
+ int i;
+
+ for (i = 0; i < hisi_hba->queue_count; i++) {
+ struct hisi_sas_cmd_hdr *debugfs_cmd_hdr, *cmd_hdr;
+ int j;
+
+ debugfs_cmd_hdr = hisi_hba->debugfs_dq[dump_index][i].hdr;
+ cmd_hdr = hisi_hba->cmd_hdr[i];
+
+ for (j = 0; j < HISI_SAS_QUEUE_SLOTS; j++)
+ memcpy(&debugfs_cmd_hdr[j], &cmd_hdr[j],
+ queue_entry_size);
+ }
+}
+
+static void hisi_sas_debugfs_snapshot_port_reg(struct hisi_hba *hisi_hba)
+{
+ int dump_index = hisi_hba->debugfs_dump_index;
+ const struct hisi_sas_debugfs_reg *port =
+ hisi_hba->hw->debugfs_reg_port;
+ int i, phy_cnt;
+ u32 offset;
+ u32 *databuf;
+
+ for (phy_cnt = 0; phy_cnt < hisi_hba->n_phy; phy_cnt++) {
+ databuf = hisi_hba->debugfs_port_reg[dump_index][phy_cnt].data;
+ for (i = 0; i < port->count; i++, databuf++) {
+ offset = port->base_off + 4 * i;
+ *databuf = port->read_port_reg(hisi_hba, phy_cnt,
+ offset);
+ }
+ }
+}
+
+static void hisi_sas_debugfs_snapshot_global_reg(struct hisi_hba *hisi_hba)
+{
+ int dump_index = hisi_hba->debugfs_dump_index;
+ u32 *databuf = hisi_hba->debugfs_regs[dump_index][DEBUGFS_GLOBAL].data;
+ const struct hisi_sas_hw *hw = hisi_hba->hw;
+ const struct hisi_sas_debugfs_reg *global =
+ hw->debugfs_reg_array[DEBUGFS_GLOBAL];
+ int i;
+
+ for (i = 0; i < global->count; i++, databuf++)
+ *databuf = global->read_global_reg(hisi_hba, 4 * i);
+}
+
+static void hisi_sas_debugfs_snapshot_axi_reg(struct hisi_hba *hisi_hba)
+{
+ int dump_index = hisi_hba->debugfs_dump_index;
+ u32 *databuf = hisi_hba->debugfs_regs[dump_index][DEBUGFS_AXI].data;
+ const struct hisi_sas_hw *hw = hisi_hba->hw;
+ const struct hisi_sas_debugfs_reg *axi =
+ hw->debugfs_reg_array[DEBUGFS_AXI];
+ int i;
+
+ for (i = 0; i < axi->count; i++, databuf++)
+ *databuf = axi->read_global_reg(hisi_hba,
+ 4 * i + axi->base_off);
+}
+
+static void hisi_sas_debugfs_snapshot_ras_reg(struct hisi_hba *hisi_hba)
+{
+ int dump_index = hisi_hba->debugfs_dump_index;
+ u32 *databuf = hisi_hba->debugfs_regs[dump_index][DEBUGFS_RAS].data;
+ const struct hisi_sas_hw *hw = hisi_hba->hw;
+ const struct hisi_sas_debugfs_reg *ras =
+ hw->debugfs_reg_array[DEBUGFS_RAS];
+ int i;
+
+ for (i = 0; i < ras->count; i++, databuf++)
+ *databuf = ras->read_global_reg(hisi_hba,
+ 4 * i + ras->base_off);
+}
+
+static void hisi_sas_debugfs_snapshot_itct_reg(struct hisi_hba *hisi_hba)
+{
+ int dump_index = hisi_hba->debugfs_dump_index;
+ void *cachebuf = hisi_hba->debugfs_itct_cache[dump_index].cache;
+ void *databuf = hisi_hba->debugfs_itct[dump_index].itct;
+ struct hisi_sas_itct *itct;
+ int i;
+
+ hisi_hba->hw->read_iost_itct_cache(hisi_hba, HISI_SAS_ITCT_CACHE,
+ cachebuf);
+
+ itct = hisi_hba->itct;
+
+ for (i = 0; i < HISI_SAS_MAX_ITCT_ENTRIES; i++, itct++) {
+ memcpy(databuf, itct, sizeof(struct hisi_sas_itct));
+ databuf += sizeof(struct hisi_sas_itct);
+ }
+}
+
+static void hisi_sas_debugfs_snapshot_iost_reg(struct hisi_hba *hisi_hba)
+{
+ int dump_index = hisi_hba->debugfs_dump_index;
+ int max_command_entries = HISI_SAS_MAX_COMMANDS;
+ void *cachebuf = hisi_hba->debugfs_iost_cache[dump_index].cache;
+ void *databuf = hisi_hba->debugfs_iost[dump_index].iost;
+ struct hisi_sas_iost *iost;
+ int i;
+
+ hisi_hba->hw->read_iost_itct_cache(hisi_hba, HISI_SAS_IOST_CACHE,
+ cachebuf);
+
+ iost = hisi_hba->iost;
+
+ for (i = 0; i < max_command_entries; i++, iost++) {
+ memcpy(databuf, iost, sizeof(struct hisi_sas_iost));
+ databuf += sizeof(struct hisi_sas_iost);
+ }
+}
+
+static const char *
+hisi_sas_debugfs_to_reg_name(int off, int base_off,
+ const struct hisi_sas_debugfs_reg_lu *lu)
+{
+ for (; lu->name; lu++) {
+ if (off == lu->off - base_off)
+ return lu->name;
+ }
+
+ return NULL;
+}
+
+static void hisi_sas_debugfs_print_reg(u32 *regs_val, const void *ptr,
+ struct seq_file *s)
+{
+ const struct hisi_sas_debugfs_reg *reg = ptr;
+ int i;
+
+ for (i = 0; i < reg->count; i++) {
+ int off = i * 4;
+ const char *name;
+
+ name = hisi_sas_debugfs_to_reg_name(off, reg->base_off,
+ reg->lu);
+
+ if (name)
+ seq_printf(s, "0x%08x 0x%08x %s\n", off,
+ regs_val[i], name);
+ else
+ seq_printf(s, "0x%08x 0x%08x\n", off,
+ regs_val[i]);
+ }
+}
+
+static int hisi_sas_debugfs_global_show(struct seq_file *s, void *p)
+{
+ struct hisi_sas_debugfs_regs *global = s->private;
+ struct hisi_hba *hisi_hba = global->hisi_hba;
+ const struct hisi_sas_hw *hw = hisi_hba->hw;
+ const void *reg_global = hw->debugfs_reg_array[DEBUGFS_GLOBAL];
+
+ hisi_sas_debugfs_print_reg(global->data,
+ reg_global, s);
+
+ return 0;
+}
+
+static int hisi_sas_debugfs_global_open(struct inode *inode, struct file *filp)
+{
+ return single_open(filp, hisi_sas_debugfs_global_show,
+ inode->i_private);
+}
+
+static const struct file_operations hisi_sas_debugfs_global_fops = {
+ .open = hisi_sas_debugfs_global_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+ .owner = THIS_MODULE,
+};
+
+static int hisi_sas_debugfs_axi_show(struct seq_file *s, void *p)
+{
+ struct hisi_sas_debugfs_regs *axi = s->private;
+ struct hisi_hba *hisi_hba = axi->hisi_hba;
+ const struct hisi_sas_hw *hw = hisi_hba->hw;
+ const void *reg_axi = hw->debugfs_reg_array[DEBUGFS_AXI];
+
+ hisi_sas_debugfs_print_reg(axi->data,
+ reg_axi, s);
+
+ return 0;
+}
+
+static int hisi_sas_debugfs_axi_open(struct inode *inode, struct file *filp)
+{
+ return single_open(filp, hisi_sas_debugfs_axi_show,
+ inode->i_private);
+}
+
+static const struct file_operations hisi_sas_debugfs_axi_fops = {
+ .open = hisi_sas_debugfs_axi_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+ .owner = THIS_MODULE,
+};
+
+static int hisi_sas_debugfs_ras_show(struct seq_file *s, void *p)
+{
+ struct hisi_sas_debugfs_regs *ras = s->private;
+ struct hisi_hba *hisi_hba = ras->hisi_hba;
+ const struct hisi_sas_hw *hw = hisi_hba->hw;
+ const void *reg_ras = hw->debugfs_reg_array[DEBUGFS_RAS];
+
+ hisi_sas_debugfs_print_reg(ras->data,
+ reg_ras, s);
+
+ return 0;
+}
+
+static int hisi_sas_debugfs_ras_open(struct inode *inode, struct file *filp)
+{
+ return single_open(filp, hisi_sas_debugfs_ras_show,
+ inode->i_private);
+}
+
+static const struct file_operations hisi_sas_debugfs_ras_fops = {
+ .open = hisi_sas_debugfs_ras_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+ .owner = THIS_MODULE,
+};
+
+static int hisi_sas_debugfs_port_show(struct seq_file *s, void *p)
+{
+ struct hisi_sas_debugfs_port *port = s->private;
+ struct hisi_sas_phy *phy = port->phy;
+ struct hisi_hba *hisi_hba = phy->hisi_hba;
+ const struct hisi_sas_hw *hw = hisi_hba->hw;
+ const struct hisi_sas_debugfs_reg *reg_port = hw->debugfs_reg_port;
+
+ hisi_sas_debugfs_print_reg(port->data, reg_port, s);
+
+ return 0;
+}
+
+static int hisi_sas_debugfs_port_open(struct inode *inode, struct file *filp)
+{
+ return single_open(filp, hisi_sas_debugfs_port_show, inode->i_private);
+}
+
+static const struct file_operations hisi_sas_debugfs_port_fops = {
+ .open = hisi_sas_debugfs_port_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+ .owner = THIS_MODULE,
+};
+
+static void hisi_sas_show_row_64(struct seq_file *s, int index,
+ int sz, __le64 *ptr)
+{
+ int i;
+
+ /* completion header size not fixed per HW version */
+ seq_printf(s, "index %04d:\n\t", index);
+ for (i = 1; i <= sz / 8; i++, ptr++) {
+ seq_printf(s, " 0x%016llx", le64_to_cpu(*ptr));
+ if (!(i % 2))
+ seq_puts(s, "\n\t");
+ }
+
+ seq_puts(s, "\n");
+}
+
+static void hisi_sas_show_row_32(struct seq_file *s, int index,
+ int sz, __le32 *ptr)
+{
+ int i;
+
+ /* completion header size not fixed per HW version */
+ seq_printf(s, "index %04d:\n\t", index);
+ for (i = 1; i <= sz / 4; i++, ptr++) {
+ seq_printf(s, " 0x%08x", le32_to_cpu(*ptr));
+ if (!(i % 4))
+ seq_puts(s, "\n\t");
+ }
+ seq_puts(s, "\n");
+}
+
+static void hisi_sas_cq_show_slot(struct seq_file *s, int slot,
+ struct hisi_sas_debugfs_cq *debugfs_cq)
+{
+ struct hisi_sas_cq *cq = debugfs_cq->cq;
+ struct hisi_hba *hisi_hba = cq->hisi_hba;
+ __le32 *complete_hdr = debugfs_cq->complete_hdr +
+ (hisi_hba->hw->complete_hdr_size * slot);
+
+ hisi_sas_show_row_32(s, slot,
+ hisi_hba->hw->complete_hdr_size,
+ complete_hdr);
+}
+
+static int hisi_sas_debugfs_cq_show(struct seq_file *s, void *p)
+{
+ struct hisi_sas_debugfs_cq *debugfs_cq = s->private;
+ int slot;
+
+ for (slot = 0; slot < HISI_SAS_QUEUE_SLOTS; slot++) {
+ hisi_sas_cq_show_slot(s, slot, debugfs_cq);
+ }
+ return 0;
+}
+
+static int hisi_sas_debugfs_cq_open(struct inode *inode, struct file *filp)
+{
+ return single_open(filp, hisi_sas_debugfs_cq_show, inode->i_private);
+}
+
+static const struct file_operations hisi_sas_debugfs_cq_fops = {
+ .open = hisi_sas_debugfs_cq_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+ .owner = THIS_MODULE,
+};
+
+static void hisi_sas_dq_show_slot(struct seq_file *s, int slot, void *dq_ptr)
+{
+ struct hisi_sas_debugfs_dq *debugfs_dq = dq_ptr;
+ void *cmd_queue = debugfs_dq->hdr;
+ __le32 *cmd_hdr = cmd_queue +
+ sizeof(struct hisi_sas_cmd_hdr) * slot;
+
+ hisi_sas_show_row_32(s, slot, sizeof(struct hisi_sas_cmd_hdr), cmd_hdr);
+}
+
+static int hisi_sas_debugfs_dq_show(struct seq_file *s, void *p)
+{
+ int slot;
+
+ for (slot = 0; slot < HISI_SAS_QUEUE_SLOTS; slot++) {
+ hisi_sas_dq_show_slot(s, slot, s->private);
+ }
+ return 0;
+}
+
+static int hisi_sas_debugfs_dq_open(struct inode *inode, struct file *filp)
+{
+ return single_open(filp, hisi_sas_debugfs_dq_show, inode->i_private);
+}
+
+static const struct file_operations hisi_sas_debugfs_dq_fops = {
+ .open = hisi_sas_debugfs_dq_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+ .owner = THIS_MODULE,
+};
+
+static int hisi_sas_debugfs_iost_show(struct seq_file *s, void *p)
+{
+ struct hisi_sas_debugfs_iost *debugfs_iost = s->private;
+ struct hisi_sas_iost *iost = debugfs_iost->iost;
+ int i, max_command_entries = HISI_SAS_MAX_COMMANDS;
+
+ for (i = 0; i < max_command_entries; i++, iost++) {
+ __le64 *data = &iost->qw0;
+
+ hisi_sas_show_row_64(s, i, sizeof(*iost), data);
+ }
+
+ return 0;
+}
+
+static int hisi_sas_debugfs_iost_open(struct inode *inode, struct file *filp)
+{
+ return single_open(filp, hisi_sas_debugfs_iost_show, inode->i_private);
+}
+
+static const struct file_operations hisi_sas_debugfs_iost_fops = {
+ .open = hisi_sas_debugfs_iost_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+ .owner = THIS_MODULE,
+};
+
+static int hisi_sas_debugfs_iost_cache_show(struct seq_file *s, void *p)
+{
+ struct hisi_sas_debugfs_iost_cache *debugfs_iost_cache = s->private;
+ struct hisi_sas_iost_itct_cache *iost_cache = debugfs_iost_cache->cache;
+ u32 cache_size = HISI_SAS_IOST_ITCT_CACHE_DW_SZ * 4;
+ int i, tab_idx;
+ __le64 *iost;
+
+ for (i = 0; i < HISI_SAS_IOST_ITCT_CACHE_NUM; i++, iost_cache++) {
+ /*
+ * Data struct of IOST cache:
+ * Data[1]: BIT0~15: Table index
+ * Bit16: Valid mask
+ * Data[2]~[9]: IOST table
+ */
+ tab_idx = (iost_cache->data[1] & 0xffff);
+ iost = (__le64 *)iost_cache;
+
+ hisi_sas_show_row_64(s, tab_idx, cache_size, iost);
+ }
+
+ return 0;
+}
+
+static int hisi_sas_debugfs_iost_cache_open(struct inode *inode,
+ struct file *filp)
+{
+ return single_open(filp, hisi_sas_debugfs_iost_cache_show,
+ inode->i_private);
+}
+
+static const struct file_operations hisi_sas_debugfs_iost_cache_fops = {
+ .open = hisi_sas_debugfs_iost_cache_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+ .owner = THIS_MODULE,
+};
+
+static int hisi_sas_debugfs_itct_show(struct seq_file *s, void *p)
+{
+ int i;
+ struct hisi_sas_debugfs_itct *debugfs_itct = s->private;
+ struct hisi_sas_itct *itct = debugfs_itct->itct;
+
+ for (i = 0; i < HISI_SAS_MAX_ITCT_ENTRIES; i++, itct++) {
+ __le64 *data = &itct->qw0;
+
+ hisi_sas_show_row_64(s, i, sizeof(*itct), data);
+ }
+
+ return 0;
+}
+
+static int hisi_sas_debugfs_itct_open(struct inode *inode, struct file *filp)
+{
+ return single_open(filp, hisi_sas_debugfs_itct_show, inode->i_private);
+}
+
+static const struct file_operations hisi_sas_debugfs_itct_fops = {
+ .open = hisi_sas_debugfs_itct_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+ .owner = THIS_MODULE,
+};
+
+static int hisi_sas_debugfs_itct_cache_show(struct seq_file *s, void *p)
+{
+ struct hisi_sas_debugfs_itct_cache *debugfs_itct_cache = s->private;
+ struct hisi_sas_iost_itct_cache *itct_cache = debugfs_itct_cache->cache;
+ u32 cache_size = HISI_SAS_IOST_ITCT_CACHE_DW_SZ * 4;
+ int i, tab_idx;
+ __le64 *itct;
+
+ for (i = 0; i < HISI_SAS_IOST_ITCT_CACHE_NUM; i++, itct_cache++) {
+ /*
+ * Data struct of ITCT cache:
+ * Data[1]: BIT0~15: Table index
+ * Bit16: Valid mask
+ * Data[2]~[9]: ITCT table
+ */
+ tab_idx = itct_cache->data[1] & 0xffff;
+ itct = (__le64 *)itct_cache;
+
+ hisi_sas_show_row_64(s, tab_idx, cache_size, itct);
+ }
+
+ return 0;
+}
+
+static int hisi_sas_debugfs_itct_cache_open(struct inode *inode,
+ struct file *filp)
+{
+ return single_open(filp, hisi_sas_debugfs_itct_cache_show,
+ inode->i_private);
+}
+
+static const struct file_operations hisi_sas_debugfs_itct_cache_fops = {
+ .open = hisi_sas_debugfs_itct_cache_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+ .owner = THIS_MODULE,
+};
+
+static void hisi_sas_debugfs_create_files(struct hisi_hba *hisi_hba)
+{
+ u64 *debugfs_timestamp;
+ int dump_index = hisi_hba->debugfs_dump_index;
+ struct dentry *dump_dentry;
+ struct dentry *dentry;
+ char name[256];
+ int p;
+ int c;
+ int d;
+
+ snprintf(name, 256, "%d", dump_index);
+
+ dump_dentry = debugfs_create_dir(name, hisi_hba->debugfs_dump_dentry);
+
+ debugfs_timestamp = &hisi_hba->debugfs_timestamp[dump_index];
+
+ debugfs_create_u64("timestamp", 0400, dump_dentry,
+ debugfs_timestamp);
+
+ debugfs_create_file("global", 0400, dump_dentry,
+ &hisi_hba->debugfs_regs[dump_index][DEBUGFS_GLOBAL],
+ &hisi_sas_debugfs_global_fops);
+
+ /* Create port dir and files */
+ dentry = debugfs_create_dir("port", dump_dentry);
+ for (p = 0; p < hisi_hba->n_phy; p++) {
+ snprintf(name, 256, "%d", p);
+
+ debugfs_create_file(name, 0400, dentry,
+ &hisi_hba->debugfs_port_reg[dump_index][p],
+ &hisi_sas_debugfs_port_fops);
+ }
+
+ /* Create CQ dir and files */
+ dentry = debugfs_create_dir("cq", dump_dentry);
+ for (c = 0; c < hisi_hba->queue_count; c++) {
+ snprintf(name, 256, "%d", c);
+
+ debugfs_create_file(name, 0400, dentry,
+ &hisi_hba->debugfs_cq[dump_index][c],
+ &hisi_sas_debugfs_cq_fops);
+ }
+
+ /* Create DQ dir and files */
+ dentry = debugfs_create_dir("dq", dump_dentry);
+ for (d = 0; d < hisi_hba->queue_count; d++) {
+ snprintf(name, 256, "%d", d);
+
+ debugfs_create_file(name, 0400, dentry,
+ &hisi_hba->debugfs_dq[dump_index][d],
+ &hisi_sas_debugfs_dq_fops);
+ }
+
+ debugfs_create_file("iost", 0400, dump_dentry,
+ &hisi_hba->debugfs_iost[dump_index],
+ &hisi_sas_debugfs_iost_fops);
+
+ debugfs_create_file("iost_cache", 0400, dump_dentry,
+ &hisi_hba->debugfs_iost_cache[dump_index],
+ &hisi_sas_debugfs_iost_cache_fops);
+
+ debugfs_create_file("itct", 0400, dump_dentry,
+ &hisi_hba->debugfs_itct[dump_index],
+ &hisi_sas_debugfs_itct_fops);
+
+ debugfs_create_file("itct_cache", 0400, dump_dentry,
+ &hisi_hba->debugfs_itct_cache[dump_index],
+ &hisi_sas_debugfs_itct_cache_fops);
+
+ debugfs_create_file("axi", 0400, dump_dentry,
+ &hisi_hba->debugfs_regs[dump_index][DEBUGFS_AXI],
+ &hisi_sas_debugfs_axi_fops);
+
+ debugfs_create_file("ras", 0400, dump_dentry,
+ &hisi_hba->debugfs_regs[dump_index][DEBUGFS_RAS],
+ &hisi_sas_debugfs_ras_fops);
+
+ return;
+}
+
+static void hisi_sas_debugfs_snapshot_regs(struct hisi_hba *hisi_hba)
+{
+ hisi_hba->hw->snapshot_prepare(hisi_hba);
+
+ hisi_sas_debugfs_snapshot_global_reg(hisi_hba);
+ hisi_sas_debugfs_snapshot_port_reg(hisi_hba);
+ hisi_sas_debugfs_snapshot_axi_reg(hisi_hba);
+ hisi_sas_debugfs_snapshot_ras_reg(hisi_hba);
+ hisi_sas_debugfs_snapshot_cq_reg(hisi_hba);
+ hisi_sas_debugfs_snapshot_dq_reg(hisi_hba);
+ hisi_sas_debugfs_snapshot_itct_reg(hisi_hba);
+ hisi_sas_debugfs_snapshot_iost_reg(hisi_hba);
+
+ hisi_sas_debugfs_create_files(hisi_hba);
+
+ hisi_hba->hw->snapshot_restore(hisi_hba);
+}
+
+static ssize_t hisi_sas_debugfs_trigger_dump_write(struct file *file,
+ const char __user *user_buf,
+ size_t count, loff_t *ppos)
+{
+ struct hisi_hba *hisi_hba = file->f_inode->i_private;
+ char buf[8];
+
+ if (hisi_hba->debugfs_dump_index >= hisi_sas_debugfs_dump_count)
+ return -EFAULT;
+
+ if (count > 8)
+ return -EFAULT;
+
+ if (copy_from_user(buf, user_buf, count))
+ return -EFAULT;
+
+ if (buf[0] != '1')
+ return -EFAULT;
+
+ queue_work(hisi_hba->wq, &hisi_hba->debugfs_work);
+
+ return count;
+}
+
+static const struct file_operations hisi_sas_debugfs_trigger_dump_fops = {
+ .write = &hisi_sas_debugfs_trigger_dump_write,
+ .owner = THIS_MODULE,
+};
+
+enum {
+ HISI_SAS_BIST_LOOPBACK_MODE_DIGITAL = 0,
+ HISI_SAS_BIST_LOOPBACK_MODE_SERDES,
+ HISI_SAS_BIST_LOOPBACK_MODE_REMOTE,
+};
+
+static const struct {
+ int value;
+ char *name;
+} hisi_sas_debugfs_loop_linkrate[] = {
+ { SAS_LINK_RATE_1_5_GBPS, "1.5 Gbit" },
+ { SAS_LINK_RATE_3_0_GBPS, "3.0 Gbit" },
+ { SAS_LINK_RATE_6_0_GBPS, "6.0 Gbit" },
+ { SAS_LINK_RATE_12_0_GBPS, "12.0 Gbit" },
+};
+
+static int hisi_sas_debugfs_bist_linkrate_show(struct seq_file *s, void *p)
+{
+ struct hisi_hba *hisi_hba = s->private;
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(hisi_sas_debugfs_loop_linkrate); i++) {
+ int match = (hisi_hba->debugfs_bist_linkrate ==
+ hisi_sas_debugfs_loop_linkrate[i].value);
+
+ seq_printf(s, "%s%s%s ", match ? "[" : "",
+ hisi_sas_debugfs_loop_linkrate[i].name,
+ match ? "]" : "");
+ }
+ seq_puts(s, "\n");
+
+ return 0;
+}
+
+static ssize_t hisi_sas_debugfs_bist_linkrate_write(struct file *filp,
+ const char __user *buf,
+ size_t count, loff_t *ppos)
+{
+ struct seq_file *m = filp->private_data;
+ struct hisi_hba *hisi_hba = m->private;
+ char kbuf[16] = {}, *pkbuf;
+ bool found = false;
+ int i;
+
+ if (hisi_hba->debugfs_bist_enable)
+ return -EPERM;
+
+ if (count >= sizeof(kbuf))
+ return -EOVERFLOW;
+
+ if (copy_from_user(kbuf, buf, count))
+ return -EINVAL;
+
+ pkbuf = strstrip(kbuf);
+
+ for (i = 0; i < ARRAY_SIZE(hisi_sas_debugfs_loop_linkrate); i++) {
+ if (!strncmp(hisi_sas_debugfs_loop_linkrate[i].name,
+ pkbuf, 16)) {
+ hisi_hba->debugfs_bist_linkrate =
+ hisi_sas_debugfs_loop_linkrate[i].value;
+ found = true;
+ break;
+ }
+ }
+
+ if (!found)
+ return -EINVAL;
+
+ return count;
+}
+
+static int hisi_sas_debugfs_bist_linkrate_open(struct inode *inode,
+ struct file *filp)
+{
+ return single_open(filp, hisi_sas_debugfs_bist_linkrate_show,
+ inode->i_private);
+}
+
+static const struct file_operations hisi_sas_debugfs_bist_linkrate_ops = {
+ .open = hisi_sas_debugfs_bist_linkrate_open,
+ .read = seq_read,
+ .write = hisi_sas_debugfs_bist_linkrate_write,
+ .llseek = seq_lseek,
+ .release = single_release,
+ .owner = THIS_MODULE,
+};
+
+static const struct {
+ int value;
+ char *name;
+} hisi_sas_debugfs_loop_code_mode[] = {
+ { HISI_SAS_BIST_CODE_MODE_PRBS7, "PRBS7" },
+ { HISI_SAS_BIST_CODE_MODE_PRBS23, "PRBS23" },
+ { HISI_SAS_BIST_CODE_MODE_PRBS31, "PRBS31" },
+ { HISI_SAS_BIST_CODE_MODE_JTPAT, "JTPAT" },
+ { HISI_SAS_BIST_CODE_MODE_CJTPAT, "CJTPAT" },
+ { HISI_SAS_BIST_CODE_MODE_SCRAMBED_0, "SCRAMBED_0" },
+ { HISI_SAS_BIST_CODE_MODE_TRAIN, "TRAIN" },
+ { HISI_SAS_BIST_CODE_MODE_TRAIN_DONE, "TRAIN_DONE" },
+ { HISI_SAS_BIST_CODE_MODE_HFTP, "HFTP" },
+ { HISI_SAS_BIST_CODE_MODE_MFTP, "MFTP" },
+ { HISI_SAS_BIST_CODE_MODE_LFTP, "LFTP" },
+ { HISI_SAS_BIST_CODE_MODE_FIXED_DATA, "FIXED_DATA" },
+};
+
+static int hisi_sas_debugfs_bist_code_mode_show(struct seq_file *s, void *p)
+{
+ struct hisi_hba *hisi_hba = s->private;
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(hisi_sas_debugfs_loop_code_mode); i++) {
+ int match = (hisi_hba->debugfs_bist_code_mode ==
+ hisi_sas_debugfs_loop_code_mode[i].value);
+
+ seq_printf(s, "%s%s%s ", match ? "[" : "",
+ hisi_sas_debugfs_loop_code_mode[i].name,
+ match ? "]" : "");
+ }
+ seq_puts(s, "\n");
+
+ return 0;
+}
+
+static ssize_t hisi_sas_debugfs_bist_code_mode_write(struct file *filp,
+ const char __user *buf,
+ size_t count,
+ loff_t *ppos)
+{
+ struct seq_file *m = filp->private_data;
+ struct hisi_hba *hisi_hba = m->private;
+ char kbuf[16] = {}, *pkbuf;
+ bool found = false;
+ int i;
+
+ if (hisi_hba->debugfs_bist_enable)
+ return -EPERM;
+
+ if (count >= sizeof(kbuf))
+ return -EINVAL;
+
+ if (copy_from_user(kbuf, buf, count))
+ return -EOVERFLOW;
+
+ pkbuf = strstrip(kbuf);
+
+ for (i = 0; i < ARRAY_SIZE(hisi_sas_debugfs_loop_code_mode); i++) {
+ if (!strncmp(hisi_sas_debugfs_loop_code_mode[i].name,
+ pkbuf, 16)) {
+ hisi_hba->debugfs_bist_code_mode =
+ hisi_sas_debugfs_loop_code_mode[i].value;
+ found = true;
+ break;
+ }
+ }
+
+ if (!found)
+ return -EINVAL;
+
+ return count;
+}
+
+static int hisi_sas_debugfs_bist_code_mode_open(struct inode *inode,
+ struct file *filp)
+{
+ return single_open(filp, hisi_sas_debugfs_bist_code_mode_show,
+ inode->i_private);
+}
+
+static const struct file_operations hisi_sas_debugfs_bist_code_mode_ops = {
+ .open = hisi_sas_debugfs_bist_code_mode_open,
+ .read = seq_read,
+ .write = hisi_sas_debugfs_bist_code_mode_write,
+ .llseek = seq_lseek,
+ .release = single_release,
+ .owner = THIS_MODULE,
+};
+
+static ssize_t hisi_sas_debugfs_bist_phy_write(struct file *filp,
+ const char __user *buf,
+ size_t count, loff_t *ppos)
+{
+ struct seq_file *m = filp->private_data;
+ struct hisi_hba *hisi_hba = m->private;
+ unsigned int phy_no;
+ int val;
+
+ if (hisi_hba->debugfs_bist_enable)
+ return -EPERM;
+
+ val = kstrtouint_from_user(buf, count, 0, &phy_no);
+ if (val)
+ return val;
+
+ if (phy_no >= hisi_hba->n_phy)
+ return -EINVAL;
+
+ hisi_hba->debugfs_bist_phy_no = phy_no;
+
+ return count;
+}
+
+static int hisi_sas_debugfs_bist_phy_show(struct seq_file *s, void *p)
+{
+ struct hisi_hba *hisi_hba = s->private;
+
+ seq_printf(s, "%d\n", hisi_hba->debugfs_bist_phy_no);
+
+ return 0;
+}
+
+static int hisi_sas_debugfs_bist_phy_open(struct inode *inode,
+ struct file *filp)
+{
+ return single_open(filp, hisi_sas_debugfs_bist_phy_show,
+ inode->i_private);
+}
+
+static const struct file_operations hisi_sas_debugfs_bist_phy_ops = {
+ .open = hisi_sas_debugfs_bist_phy_open,
+ .read = seq_read,
+ .write = hisi_sas_debugfs_bist_phy_write,
+ .llseek = seq_lseek,
+ .release = single_release,
+ .owner = THIS_MODULE,
+};
+
+static const struct {
+ int value;
+ char *name;
+} hisi_sas_debugfs_loop_modes[] = {
+ { HISI_SAS_BIST_LOOPBACK_MODE_DIGITAL, "digital" },
+ { HISI_SAS_BIST_LOOPBACK_MODE_SERDES, "serdes" },
+ { HISI_SAS_BIST_LOOPBACK_MODE_REMOTE, "remote" },
+};
+
+static int hisi_sas_debugfs_bist_mode_show(struct seq_file *s, void *p)
+{
+ struct hisi_hba *hisi_hba = s->private;
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(hisi_sas_debugfs_loop_modes); i++) {
+ int match = (hisi_hba->debugfs_bist_mode ==
+ hisi_sas_debugfs_loop_modes[i].value);
+
+ seq_printf(s, "%s%s%s ", match ? "[" : "",
+ hisi_sas_debugfs_loop_modes[i].name,
+ match ? "]" : "");
+ }
+ seq_puts(s, "\n");
+
+ return 0;
+}
+
+static ssize_t hisi_sas_debugfs_bist_mode_write(struct file *filp,
+ const char __user *buf,
+ size_t count, loff_t *ppos)
+{
+ struct seq_file *m = filp->private_data;
+ struct hisi_hba *hisi_hba = m->private;
+ char kbuf[16] = {}, *pkbuf;
+ bool found = false;
+ int i;
+
+ if (hisi_hba->debugfs_bist_enable)
+ return -EPERM;
+
+ if (count >= sizeof(kbuf))
+ return -EINVAL;
+
+ if (copy_from_user(kbuf, buf, count))
+ return -EOVERFLOW;
+
+ pkbuf = strstrip(kbuf);
+
+ for (i = 0; i < ARRAY_SIZE(hisi_sas_debugfs_loop_modes); i++) {
+ if (!strncmp(hisi_sas_debugfs_loop_modes[i].name, pkbuf, 16)) {
+ hisi_hba->debugfs_bist_mode =
+ hisi_sas_debugfs_loop_modes[i].value;
+ found = true;
+ break;
+ }
+ }
+
+ if (!found)
+ return -EINVAL;
+
+ return count;
+}
+
+static int hisi_sas_debugfs_bist_mode_open(struct inode *inode,
+ struct file *filp)
+{
+ return single_open(filp, hisi_sas_debugfs_bist_mode_show,
+ inode->i_private);
+}
+
+static const struct file_operations hisi_sas_debugfs_bist_mode_ops = {
+ .open = hisi_sas_debugfs_bist_mode_open,
+ .read = seq_read,
+ .write = hisi_sas_debugfs_bist_mode_write,
+ .llseek = seq_lseek,
+ .release = single_release,
+ .owner = THIS_MODULE,
+};
+
+static ssize_t hisi_sas_debugfs_bist_enable_write(struct file *filp,
+ const char __user *buf,
+ size_t count, loff_t *ppos)
+{
+ struct seq_file *m = filp->private_data;
+ struct hisi_hba *hisi_hba = m->private;
+ unsigned int enable;
+ int val;
+
+ val = kstrtouint_from_user(buf, count, 0, &enable);
+ if (val)
+ return val;
+
+ if (enable > 1)
+ return -EINVAL;
+
+ if (enable == hisi_hba->debugfs_bist_enable)
+ return count;
+
+ if (!hisi_hba->hw->set_bist)
+ return -EPERM;
+
+ val = hisi_hba->hw->set_bist(hisi_hba, enable);
+ if (val < 0)
+ return val;
+
+ hisi_hba->debugfs_bist_enable = enable;
+
+ return count;
+}
+
+static int hisi_sas_debugfs_bist_enable_show(struct seq_file *s, void *p)
+{
+ struct hisi_hba *hisi_hba = s->private;
+
+ seq_printf(s, "%d\n", hisi_hba->debugfs_bist_enable);
+
+ return 0;
+}
+
+static int hisi_sas_debugfs_bist_enable_open(struct inode *inode,
+ struct file *filp)
+{
+ return single_open(filp, hisi_sas_debugfs_bist_enable_show,
+ inode->i_private);
+}
+
+static const struct file_operations hisi_sas_debugfs_bist_enable_ops = {
+ .open = hisi_sas_debugfs_bist_enable_open,
+ .read = seq_read,
+ .write = hisi_sas_debugfs_bist_enable_write,
+ .llseek = seq_lseek,
+ .release = single_release,
+ .owner = THIS_MODULE,
+};
+
+static const struct {
+ char *name;
+} hisi_sas_debugfs_ffe_name[FFE_CFG_MAX] = {
+ { "SAS_1_5_GBPS" },
+ { "SAS_3_0_GBPS" },
+ { "SAS_6_0_GBPS" },
+ { "SAS_12_0_GBPS" },
+ { "FFE_RESV" },
+ { "SATA_1_5_GBPS" },
+ { "SATA_3_0_GBPS" },
+ { "SATA_6_0_GBPS" },
+};
+
+static ssize_t hisi_sas_debugfs_write(struct file *filp,
+ const char __user *buf,
+ size_t count, loff_t *ppos)
+{
+ struct seq_file *m = filp->private_data;
+ u32 *val = m->private;
+ int res;
+
+ res = kstrtouint_from_user(buf, count, 0, val);
+ if (res)
+ return res;
+
+ return count;
+}
+
+static int hisi_sas_debugfs_show(struct seq_file *s, void *p)
+{
+ u32 *val = s->private;
+
+ seq_printf(s, "0x%x\n", *val);
+
+ return 0;
+}
+
+static int hisi_sas_debugfs_open(struct inode *inode, struct file *filp)
+{
+ return single_open(filp, hisi_sas_debugfs_show,
+ inode->i_private);
+}
+
+static const struct file_operations hisi_sas_debugfs_ops = {
+ .open = hisi_sas_debugfs_open,
+ .read = seq_read,
+ .write = hisi_sas_debugfs_write,
+ .llseek = seq_lseek,
+ .release = single_release,
+ .owner = THIS_MODULE,
+};
+
+static ssize_t hisi_sas_debugfs_phy_down_cnt_write(struct file *filp,
+ const char __user *buf,
+ size_t count, loff_t *ppos)
+{
+ struct seq_file *s = filp->private_data;
+ struct hisi_sas_phy *phy = s->private;
+ unsigned int set_val;
+ int res;
+
+ res = kstrtouint_from_user(buf, count, 0, &set_val);
+ if (res)
+ return res;
+
+ if (set_val > 0)
+ return -EINVAL;
+
+ atomic_set(&phy->down_cnt, 0);
+
+ return count;
+}
+
+static int hisi_sas_debugfs_phy_down_cnt_show(struct seq_file *s, void *p)
+{
+ struct hisi_sas_phy *phy = s->private;
+
+ seq_printf(s, "%d\n", atomic_read(&phy->down_cnt));
+
+ return 0;
+}
+
+static int hisi_sas_debugfs_phy_down_cnt_open(struct inode *inode,
+ struct file *filp)
+{
+ return single_open(filp, hisi_sas_debugfs_phy_down_cnt_show,
+ inode->i_private);
+}
+
+static const struct file_operations hisi_sas_debugfs_phy_down_cnt_ops = {
+ .open = hisi_sas_debugfs_phy_down_cnt_open,
+ .read = seq_read,
+ .write = hisi_sas_debugfs_phy_down_cnt_write,
+ .llseek = seq_lseek,
+ .release = single_release,
+ .owner = THIS_MODULE,
+};
+
+void hisi_sas_debugfs_work_handler(struct work_struct *work)
+{
+ struct hisi_hba *hisi_hba =
+ container_of(work, struct hisi_hba, debugfs_work);
+ int debugfs_dump_index = hisi_hba->debugfs_dump_index;
+ struct device *dev = hisi_hba->dev;
+ u64 timestamp = local_clock();
+
+ if (debugfs_dump_index >= hisi_sas_debugfs_dump_count) {
+ dev_warn(dev, "dump count exceeded!\n");
+ return;
+ }
+
+ do_div(timestamp, NSEC_PER_MSEC);
+ hisi_hba->debugfs_timestamp[debugfs_dump_index] = timestamp;
+
+ hisi_sas_debugfs_snapshot_regs(hisi_hba);
+ hisi_hba->debugfs_dump_index++;
+}
+EXPORT_SYMBOL_GPL(hisi_sas_debugfs_work_handler);
+
+static void hisi_sas_debugfs_release(struct hisi_hba *hisi_hba, int dump_index)
+{
+ struct device *dev = hisi_hba->dev;
+ int i;
+
+ devm_kfree(dev, hisi_hba->debugfs_iost_cache[dump_index].cache);
+ devm_kfree(dev, hisi_hba->debugfs_itct_cache[dump_index].cache);
+ devm_kfree(dev, hisi_hba->debugfs_iost[dump_index].iost);
+ devm_kfree(dev, hisi_hba->debugfs_itct[dump_index].itct);
+
+ for (i = 0; i < hisi_hba->queue_count; i++)
+ devm_kfree(dev, hisi_hba->debugfs_dq[dump_index][i].hdr);
+
+ for (i = 0; i < hisi_hba->queue_count; i++)
+ devm_kfree(dev,
+ hisi_hba->debugfs_cq[dump_index][i].complete_hdr);
+
+ for (i = 0; i < DEBUGFS_REGS_NUM; i++)
+ devm_kfree(dev, hisi_hba->debugfs_regs[dump_index][i].data);
+
+ for (i = 0; i < hisi_hba->n_phy; i++)
+ devm_kfree(dev, hisi_hba->debugfs_port_reg[dump_index][i].data);
+}
+
+static int hisi_sas_debugfs_alloc(struct hisi_hba *hisi_hba, int dump_index)
+{
+ const struct hisi_sas_hw *hw = hisi_hba->hw;
+ struct device *dev = hisi_hba->dev;
+ int p, c, d, r, i;
+ size_t sz;
+
+ for (r = 0; r < DEBUGFS_REGS_NUM; r++) {
+ struct hisi_sas_debugfs_regs *regs =
+ &hisi_hba->debugfs_regs[dump_index][r];
+
+ sz = hw->debugfs_reg_array[r]->count * 4;
+ regs->data = devm_kmalloc(dev, sz, GFP_KERNEL);
+ if (!regs->data)
+ goto fail;
+ regs->hisi_hba = hisi_hba;
+ }
+
+ sz = hw->debugfs_reg_port->count * 4;
+ for (p = 0; p < hisi_hba->n_phy; p++) {
+ struct hisi_sas_debugfs_port *port =
+ &hisi_hba->debugfs_port_reg[dump_index][p];
+
+ port->data = devm_kmalloc(dev, sz, GFP_KERNEL);
+ if (!port->data)
+ goto fail;
+ port->phy = &hisi_hba->phy[p];
+ }
+
+ sz = hw->complete_hdr_size * HISI_SAS_QUEUE_SLOTS;
+ for (c = 0; c < hisi_hba->queue_count; c++) {
+ struct hisi_sas_debugfs_cq *cq =
+ &hisi_hba->debugfs_cq[dump_index][c];
+
+ cq->complete_hdr = devm_kmalloc(dev, sz, GFP_KERNEL);
+ if (!cq->complete_hdr)
+ goto fail;
+ cq->cq = &hisi_hba->cq[c];
+ }
+
+ sz = sizeof(struct hisi_sas_cmd_hdr) * HISI_SAS_QUEUE_SLOTS;
+ for (d = 0; d < hisi_hba->queue_count; d++) {
+ struct hisi_sas_debugfs_dq *dq =
+ &hisi_hba->debugfs_dq[dump_index][d];
+
+ dq->hdr = devm_kmalloc(dev, sz, GFP_KERNEL);
+ if (!dq->hdr)
+ goto fail;
+ dq->dq = &hisi_hba->dq[d];
+ }
+
+ sz = HISI_SAS_MAX_COMMANDS * sizeof(struct hisi_sas_iost);
+
+ hisi_hba->debugfs_iost[dump_index].iost =
+ devm_kmalloc(dev, sz, GFP_KERNEL);
+ if (!hisi_hba->debugfs_iost[dump_index].iost)
+ goto fail;
+
+ sz = HISI_SAS_IOST_ITCT_CACHE_NUM *
+ sizeof(struct hisi_sas_iost_itct_cache);
+
+ hisi_hba->debugfs_iost_cache[dump_index].cache =
+ devm_kmalloc(dev, sz, GFP_KERNEL);
+ if (!hisi_hba->debugfs_iost_cache[dump_index].cache)
+ goto fail;
+
+ sz = HISI_SAS_IOST_ITCT_CACHE_NUM *
+ sizeof(struct hisi_sas_iost_itct_cache);
+
+ hisi_hba->debugfs_itct_cache[dump_index].cache =
+ devm_kmalloc(dev, sz, GFP_KERNEL);
+ if (!hisi_hba->debugfs_itct_cache[dump_index].cache)
+ goto fail;
+
+ /* New memory allocation must be locate before itct */
+ sz = HISI_SAS_MAX_ITCT_ENTRIES * sizeof(struct hisi_sas_itct);
+
+ hisi_hba->debugfs_itct[dump_index].itct =
+ devm_kmalloc(dev, sz, GFP_KERNEL);
+ if (!hisi_hba->debugfs_itct[dump_index].itct)
+ goto fail;
+
+ return 0;
+fail:
+ for (i = 0; i < hisi_sas_debugfs_dump_count; i++)
+ hisi_sas_debugfs_release(hisi_hba, i);
+ return -ENOMEM;
+}
+
+static void hisi_sas_debugfs_phy_down_cnt_init(struct hisi_hba *hisi_hba)
+{
+ struct dentry *dir = debugfs_create_dir("phy_down_cnt",
+ hisi_hba->debugfs_dir);
+ char name[16];
+ int phy_no;
+
+ for (phy_no = 0; phy_no < hisi_hba->n_phy; phy_no++) {
+ snprintf(name, 16, "%d", phy_no);
+ debugfs_create_file(name, 0600, dir,
+ &hisi_hba->phy[phy_no],
+ &hisi_sas_debugfs_phy_down_cnt_ops);
+ }
+}
+
+static void hisi_sas_debugfs_bist_init(struct hisi_hba *hisi_hba)
+{
+ struct dentry *ports_dentry;
+ int phy_no;
+
+ hisi_hba->debugfs_bist_dentry =
+ debugfs_create_dir("bist", hisi_hba->debugfs_dir);
+ debugfs_create_file("link_rate", 0600,
+ hisi_hba->debugfs_bist_dentry, hisi_hba,
+ &hisi_sas_debugfs_bist_linkrate_ops);
+
+ debugfs_create_file("code_mode", 0600,
+ hisi_hba->debugfs_bist_dentry, hisi_hba,
+ &hisi_sas_debugfs_bist_code_mode_ops);
+
+ debugfs_create_file("fixed_code", 0600,
+ hisi_hba->debugfs_bist_dentry,
+ &hisi_hba->debugfs_bist_fixed_code[0],
+ &hisi_sas_debugfs_ops);
+
+ debugfs_create_file("fixed_code_1", 0600,
+ hisi_hba->debugfs_bist_dentry,
+ &hisi_hba->debugfs_bist_fixed_code[1],
+ &hisi_sas_debugfs_ops);
+
+ debugfs_create_file("phy_id", 0600, hisi_hba->debugfs_bist_dentry,
+ hisi_hba, &hisi_sas_debugfs_bist_phy_ops);
+
+ debugfs_create_u32("cnt", 0600, hisi_hba->debugfs_bist_dentry,
+ &hisi_hba->debugfs_bist_cnt);
+
+ debugfs_create_file("loopback_mode", 0600,
+ hisi_hba->debugfs_bist_dentry,
+ hisi_hba, &hisi_sas_debugfs_bist_mode_ops);
+
+ debugfs_create_file("enable", 0600, hisi_hba->debugfs_bist_dentry,
+ hisi_hba, &hisi_sas_debugfs_bist_enable_ops);
+
+ ports_dentry = debugfs_create_dir("port", hisi_hba->debugfs_bist_dentry);
+
+ for (phy_no = 0; phy_no < hisi_hba->n_phy; phy_no++) {
+ struct dentry *port_dentry;
+ struct dentry *ffe_dentry;
+ char name[256];
+ int i;
+
+ snprintf(name, 256, "%d", phy_no);
+ port_dentry = debugfs_create_dir(name, ports_dentry);
+ ffe_dentry = debugfs_create_dir("ffe", port_dentry);
+ for (i = 0; i < FFE_CFG_MAX; i++) {
+ if (i == FFE_RESV)
+ continue;
+ debugfs_create_file(hisi_sas_debugfs_ffe_name[i].name,
+ 0600, ffe_dentry,
+ &hisi_hba->debugfs_bist_ffe[phy_no][i],
+ &hisi_sas_debugfs_ops);
+ }
+ }
+
+ hisi_hba->debugfs_bist_linkrate = SAS_LINK_RATE_1_5_GBPS;
+}
+
+void hisi_sas_debugfs_init(struct hisi_hba *hisi_hba)
+{
+ struct device *dev = hisi_hba->dev;
+ int i;
+
+ hisi_hba->debugfs_dir = debugfs_create_dir(dev_name(dev),
+ hisi_sas_debugfs_dir);
+ debugfs_create_file("trigger_dump", 0200,
+ hisi_hba->debugfs_dir,
+ hisi_hba,
+ &hisi_sas_debugfs_trigger_dump_fops);
+
+ /* create bist structures */
+ hisi_sas_debugfs_bist_init(hisi_hba);
+
+ hisi_hba->debugfs_dump_dentry =
+ debugfs_create_dir("dump", hisi_hba->debugfs_dir);
+
+ hisi_sas_debugfs_phy_down_cnt_init(hisi_hba);
+
+ for (i = 0; i < hisi_sas_debugfs_dump_count; i++) {
+ if (hisi_sas_debugfs_alloc(hisi_hba, i)) {
+ debugfs_remove_recursive(hisi_hba->debugfs_dir);
+ dev_dbg(dev, "failed to init debugfs!\n");
+ break;
+ }
+ }
+}
+EXPORT_SYMBOL_GPL(hisi_sas_debugfs_init);
+
+void hisi_sas_debugfs_exit(struct hisi_hba *hisi_hba)
+{
+ debugfs_remove_recursive(hisi_hba->debugfs_dir);
+}
+EXPORT_SYMBOL_GPL(hisi_sas_debugfs_exit);
int hisi_sas_remove(struct platform_device *pdev)
{
@@ -2444,11 +4059,29 @@
}
EXPORT_SYMBOL_GPL(hisi_sas_remove);
+bool hisi_sas_debugfs_enable;
+EXPORT_SYMBOL_GPL(hisi_sas_debugfs_enable);
+module_param_named(debugfs_enable, hisi_sas_debugfs_enable, bool, 0444);
+MODULE_PARM_DESC(hisi_sas_debugfs_enable, "Enable driver debugfs (default disabled)");
+
+u32 hisi_sas_debugfs_dump_count = 1;
+EXPORT_SYMBOL_GPL(hisi_sas_debugfs_dump_count);
+module_param_named(debugfs_dump_count, hisi_sas_debugfs_dump_count, uint, 0444);
+MODULE_PARM_DESC(hisi_sas_debugfs_dump_count, "Number of debugfs dumps to allow");
+
static __init int hisi_sas_init(void)
{
hisi_sas_stt = sas_domain_attach_transport(&hisi_sas_transport_ops);
if (!hisi_sas_stt)
return -ENOMEM;
+
+ if (hisi_sas_debugfs_enable) {
+ hisi_sas_debugfs_dir = debugfs_create_dir("hisi_sas", NULL);
+ if (hisi_sas_debugfs_dump_count > HISI_SAS_MAX_DEBUGFS_DUMP) {
+ pr_info("hisi_sas: Limiting debugfs dump count\n");
+ hisi_sas_debugfs_dump_count = HISI_SAS_MAX_DEBUGFS_DUMP;
+ }
+ }
return 0;
}
@@ -2456,6 +4089,8 @@
static __exit void hisi_sas_exit(void)
{
sas_release_transport(hisi_sas_stt);
+
+ debugfs_remove(hisi_sas_debugfs_dir);
}
module_init(hisi_sas_init);
--
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