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hisi_sas: Add dev_found and dev_gone 

Add functions to deal with lldd_dev_found and lldd_dev_gone.

Signed-off-by: John Garry <john.garry@huawei.com>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
John Garry 2015-11-18 00:50:51 +08:00 committed by Martin K. Petersen
parent 27a3f2292e
commit abda97c2fe
3 changed files with 142 additions and 0 deletions
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13
drivers/scsi/hisi_sas/hisi_sas.h
View File

@ -39,6 +39,7 @@
#define HISI_SAS_NAME_LEN 32
struct hisi_hba;
enum {
PORT_TYPE_SAS = (1U << 1),
@ -49,6 +50,13 @@ enum dev_status {
HISI_SAS_DEV_NORMAL,
HISI_SAS_DEV_EH,
};
enum hisi_sas_dev_type {
HISI_SAS_DEV_TYPE_STP = 0,
HISI_SAS_DEV_TYPE_SSP,
HISI_SAS_DEV_TYPE_SATA,
};
struct hisi_sas_phy {
struct hisi_hba *hisi_hba;
struct hisi_sas_port *port;
@ -81,6 +89,9 @@ struct hisi_sas_cq {
struct hisi_sas_device {
enum sas_device_type dev_type;
struct hisi_hba *hisi_hba;
struct domain_device *sas_device;
u64 attached_phy;
u64 device_id;
u64 running_req;
u8 dev_status;
@ -113,6 +124,8 @@ struct hisi_sas_tmf_task {
struct hisi_sas_hw {
int (*hw_init)(struct hisi_hba *hisi_hba);
void (*setup_itct)(struct hisi_hba *hisi_hba,
struct hisi_sas_device *device);
void (*sl_notify)(struct hisi_hba *hisi_hba, int phy_no);
int (*get_free_slot)(struct hisi_hba *hisi_hba, int *q, int *s);
void (*start_delivery)(struct hisi_hba *hisi_hba);

88
drivers/scsi/hisi_sas/hisi_sas_main.c
View File

@ -12,6 +12,9 @@
#include "hisi_sas.h"
#define DRV_NAME "hisi_sas"
#define DEV_IS_EXPANDER(type) \
((type == SAS_EDGE_EXPANDER_DEVICE) || \
(type == SAS_FANOUT_EXPANDER_DEVICE))
#define DEV_IS_GONE(dev) \
((!dev) || (dev->dev_type == SAS_PHY_UNUSED))
@ -325,6 +328,72 @@ static void hisi_sas_bytes_dmaed(struct hisi_hba *hisi_hba, int phy_no)
sas_ha->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;
int i;
spin_lock(&hisi_hba->lock);
for (i = 0; i < HISI_SAS_MAX_DEVICES; i++) {
if (hisi_hba->devices[i].dev_type == SAS_PHY_UNUSED) {
hisi_hba->devices[i].device_id = i;
sas_dev = &hisi_hba->devices[i];
sas_dev->dev_status = HISI_SAS_DEV_NORMAL;
sas_dev->dev_type = device->dev_type;
sas_dev->hisi_hba = hisi_hba;
sas_dev->sas_device = device;
break;
}
}
spin_unlock(&hisi_hba->lock);
return sas_dev;
}
static int hisi_sas_dev_found(struct domain_device *device)
{
struct hisi_hba *hisi_hba = dev_to_hisi_hba(device);
struct domain_device *parent_dev = device->parent;
struct hisi_sas_device *sas_dev;
struct device *dev = &hisi_hba->pdev->dev;
sas_dev = hisi_sas_alloc_dev(device);
if (!sas_dev) {
dev_err(dev, "fail alloc dev: max support %d devices\n",
HISI_SAS_MAX_DEVICES);
return -EINVAL;
}
device->lldd_dev = sas_dev;
hisi_hba->hw->setup_itct(hisi_hba, sas_dev);
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;
for (phy_no = 0; phy_no < phy_num; phy_no++) {
phy = &parent_dev->ex_dev.ex_phy[phy_no];
if (SAS_ADDR(phy->attached_sas_addr) ==
SAS_ADDR(device->sas_addr)) {
sas_dev->attached_phy = phy_no;
break;
}
}
if (phy_no == phy_num) {
dev_info(dev, "dev found: no attached "
"dev:%016llx at ex:%016llx\n",
SAS_ADDR(device->sas_addr),
SAS_ADDR(parent_dev->sas_addr));
return -EINVAL;
}
}
return 0;
}
static void hisi_sas_phyup_work(struct work_struct *work)
{
struct hisi_sas_phy *phy =
@ -362,6 +431,23 @@ static void hisi_sas_phy_init(struct hisi_hba *hisi_hba, int phy_no)
INIT_WORK(&phy->phyup_ws, hisi_sas_phyup_work);
}
static void hisi_sas_dev_gone(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->pdev->dev;
u64 dev_id = sas_dev->device_id;
dev_info(dev, "found dev[%lld:%x] is gone\n",
sas_dev->device_id, sas_dev->dev_type);
hisi_hba->hw->free_device(hisi_hba, sas_dev);
device->lldd_dev = NULL;
memset(sas_dev, 0, sizeof(*sas_dev));
sas_dev->device_id = dev_id;
sas_dev->dev_type = SAS_PHY_UNUSED;
sas_dev->dev_status = HISI_SAS_DEV_NORMAL;
}
static int hisi_sas_queue_command(struct sas_task *task, gfp_t gfp_flags)
{
@ -390,6 +476,8 @@ static struct scsi_host_template hisi_sas_sht = {
};
static struct sas_domain_function_template hisi_sas_transport_ops = {
.lldd_dev_found = hisi_sas_dev_found,
.lldd_dev_gone = hisi_sas_dev_gone,
.lldd_execute_task = hisi_sas_queue_command,
};

41
drivers/scsi/hisi_sas/hisi_sas_v1_hw.c
View File

@ -498,6 +498,46 @@ static void init_id_frame_v1_hw(struct hisi_hba *hisi_hba)
config_id_frame_v1_hw(hisi_hba, i);
}
static void setup_itct_v1_hw(struct hisi_hba *hisi_hba,
struct hisi_sas_device *sas_dev)
{
struct domain_device *device = sas_dev->sas_device;
struct device *dev = &hisi_hba->pdev->dev;
u64 qw0, device_id = sas_dev->device_id;
struct hisi_sas_itct *itct = &hisi_hba->itct[device_id];
memset(itct, 0, sizeof(*itct));
/* qw0 */
qw0 = 0;
switch (sas_dev->dev_type) {
case SAS_END_DEVICE:
case SAS_EDGE_EXPANDER_DEVICE:
case SAS_FANOUT_EXPANDER_DEVICE:
qw0 = HISI_SAS_DEV_TYPE_SSP << ITCT_HDR_DEV_TYPE_OFF;
break;
default:
dev_warn(dev, "setup itct: unsupported dev type (%d)\n",
sas_dev->dev_type);
}
qw0 |= ((1 << ITCT_HDR_VALID_OFF) |
(1 << ITCT_HDR_AWT_CONTROL_OFF) |
(device->max_linkrate << ITCT_HDR_MAX_CONN_RATE_OFF) |
(1 << ITCT_HDR_VALID_LINK_NUM_OFF) |
(device->port->id << ITCT_HDR_PORT_ID_OFF));
itct->qw0 = cpu_to_le64(qw0);
/* qw1 */
memcpy(&itct->sas_addr, device->sas_addr, SAS_ADDR_SIZE);
itct->sas_addr = __swab64(itct->sas_addr);
/* qw2 */
itct->qw2 = cpu_to_le64((500 < ITCT_HDR_IT_NEXUS_LOSS_TL_OFF) |
(0xff00 < ITCT_HDR_BUS_INACTIVE_TL_OFF) |
(0xff00 < ITCT_HDR_MAX_CONN_TL_OFF) |
(0xff00 < ITCT_HDR_REJ_OPEN_TL_OFF));
}
static void free_device_v1_hw(struct hisi_hba *hisi_hba,
struct hisi_sas_device *sas_dev)
@ -1452,6 +1492,7 @@ static int hisi_sas_v1_init(struct hisi_hba *hisi_hba)
static const struct hisi_sas_hw hisi_sas_v1_hw = {
.hw_init = hisi_sas_v1_init,
.setup_itct = setup_itct_v1_hw,
.sl_notify = sl_notify_v1_hw,
.free_device = free_device_v1_hw,
.prep_ssp = prep_ssp_v1_hw,