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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
Martin K. Petersen
parent
27a3f2292e
commit
abda97c2fe
@ -39,6 +39,7 @@
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#define HISI_SAS_NAME_LEN 32
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struct hisi_hba;
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enum {
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PORT_TYPE_SAS = (1U << 1),
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@ -49,6 +50,13 @@ enum dev_status {
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HISI_SAS_DEV_NORMAL,
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HISI_SAS_DEV_EH,
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};
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enum hisi_sas_dev_type {
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HISI_SAS_DEV_TYPE_STP = 0,
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HISI_SAS_DEV_TYPE_SSP,
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HISI_SAS_DEV_TYPE_SATA,
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};
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struct hisi_sas_phy {
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struct hisi_hba *hisi_hba;
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struct hisi_sas_port *port;
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@ -81,6 +89,9 @@ struct hisi_sas_cq {
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struct hisi_sas_device {
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enum sas_device_type dev_type;
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struct hisi_hba *hisi_hba;
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struct domain_device *sas_device;
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u64 attached_phy;
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u64 device_id;
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u64 running_req;
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u8 dev_status;
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@ -113,6 +124,8 @@ struct hisi_sas_tmf_task {
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struct hisi_sas_hw {
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int (*hw_init)(struct hisi_hba *hisi_hba);
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void (*setup_itct)(struct hisi_hba *hisi_hba,
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struct hisi_sas_device *device);
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void (*sl_notify)(struct hisi_hba *hisi_hba, int phy_no);
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int (*get_free_slot)(struct hisi_hba *hisi_hba, int *q, int *s);
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void (*start_delivery)(struct hisi_hba *hisi_hba);
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@ -12,6 +12,9 @@
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#include "hisi_sas.h"
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#define DRV_NAME "hisi_sas"
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#define DEV_IS_EXPANDER(type) \
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((type == SAS_EDGE_EXPANDER_DEVICE) || \
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(type == SAS_FANOUT_EXPANDER_DEVICE))
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#define DEV_IS_GONE(dev) \
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((!dev) || (dev->dev_type == SAS_PHY_UNUSED))
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@ -325,6 +328,72 @@ static void hisi_sas_bytes_dmaed(struct hisi_hba *hisi_hba, int phy_no)
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sas_ha->notify_port_event(sas_phy, PORTE_BYTES_DMAED);
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}
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static struct hisi_sas_device *hisi_sas_alloc_dev(struct domain_device *device)
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{
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struct hisi_hba *hisi_hba = dev_to_hisi_hba(device);
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struct hisi_sas_device *sas_dev = NULL;
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int i;
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spin_lock(&hisi_hba->lock);
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for (i = 0; i < HISI_SAS_MAX_DEVICES; i++) {
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if (hisi_hba->devices[i].dev_type == SAS_PHY_UNUSED) {
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hisi_hba->devices[i].device_id = i;
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sas_dev = &hisi_hba->devices[i];
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sas_dev->dev_status = HISI_SAS_DEV_NORMAL;
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sas_dev->dev_type = device->dev_type;
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sas_dev->hisi_hba = hisi_hba;
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sas_dev->sas_device = device;
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break;
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}
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}
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spin_unlock(&hisi_hba->lock);
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return sas_dev;
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}
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static int hisi_sas_dev_found(struct domain_device *device)
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{
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struct hisi_hba *hisi_hba = dev_to_hisi_hba(device);
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struct domain_device *parent_dev = device->parent;
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struct hisi_sas_device *sas_dev;
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struct device *dev = &hisi_hba->pdev->dev;
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sas_dev = hisi_sas_alloc_dev(device);
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if (!sas_dev) {
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dev_err(dev, "fail alloc dev: max support %d devices\n",
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HISI_SAS_MAX_DEVICES);
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return -EINVAL;
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}
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device->lldd_dev = sas_dev;
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hisi_hba->hw->setup_itct(hisi_hba, sas_dev);
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if (parent_dev && DEV_IS_EXPANDER(parent_dev->dev_type)) {
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int phy_no;
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u8 phy_num = parent_dev->ex_dev.num_phys;
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struct ex_phy *phy;
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for (phy_no = 0; phy_no < phy_num; phy_no++) {
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phy = &parent_dev->ex_dev.ex_phy[phy_no];
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if (SAS_ADDR(phy->attached_sas_addr) ==
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SAS_ADDR(device->sas_addr)) {
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sas_dev->attached_phy = phy_no;
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break;
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}
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}
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if (phy_no == phy_num) {
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dev_info(dev, "dev found: no attached "
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"dev:%016llx at ex:%016llx\n",
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SAS_ADDR(device->sas_addr),
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SAS_ADDR(parent_dev->sas_addr));
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return -EINVAL;
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}
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}
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return 0;
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}
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static void hisi_sas_phyup_work(struct work_struct *work)
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{
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struct hisi_sas_phy *phy =
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@ -362,6 +431,23 @@ static void hisi_sas_phy_init(struct hisi_hba *hisi_hba, int phy_no)
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INIT_WORK(&phy->phyup_ws, hisi_sas_phyup_work);
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}
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static void hisi_sas_dev_gone(struct domain_device *device)
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{
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struct hisi_sas_device *sas_dev = device->lldd_dev;
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struct hisi_hba *hisi_hba = dev_to_hisi_hba(device);
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struct device *dev = &hisi_hba->pdev->dev;
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u64 dev_id = sas_dev->device_id;
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dev_info(dev, "found dev[%lld:%x] is gone\n",
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sas_dev->device_id, sas_dev->dev_type);
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hisi_hba->hw->free_device(hisi_hba, sas_dev);
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device->lldd_dev = NULL;
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memset(sas_dev, 0, sizeof(*sas_dev));
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sas_dev->device_id = dev_id;
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sas_dev->dev_type = SAS_PHY_UNUSED;
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sas_dev->dev_status = HISI_SAS_DEV_NORMAL;
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}
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static int hisi_sas_queue_command(struct sas_task *task, gfp_t gfp_flags)
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{
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@ -390,6 +476,8 @@ static struct scsi_host_template hisi_sas_sht = {
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};
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static struct sas_domain_function_template hisi_sas_transport_ops = {
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.lldd_dev_found = hisi_sas_dev_found,
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.lldd_dev_gone = hisi_sas_dev_gone,
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.lldd_execute_task = hisi_sas_queue_command,
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};
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@ -498,6 +498,46 @@ static void init_id_frame_v1_hw(struct hisi_hba *hisi_hba)
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config_id_frame_v1_hw(hisi_hba, i);
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}
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static void setup_itct_v1_hw(struct hisi_hba *hisi_hba,
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struct hisi_sas_device *sas_dev)
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{
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struct domain_device *device = sas_dev->sas_device;
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struct device *dev = &hisi_hba->pdev->dev;
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u64 qw0, device_id = sas_dev->device_id;
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struct hisi_sas_itct *itct = &hisi_hba->itct[device_id];
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memset(itct, 0, sizeof(*itct));
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/* qw0 */
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qw0 = 0;
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switch (sas_dev->dev_type) {
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case SAS_END_DEVICE:
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case SAS_EDGE_EXPANDER_DEVICE:
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case SAS_FANOUT_EXPANDER_DEVICE:
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qw0 = HISI_SAS_DEV_TYPE_SSP << ITCT_HDR_DEV_TYPE_OFF;
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break;
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default:
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dev_warn(dev, "setup itct: unsupported dev type (%d)\n",
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sas_dev->dev_type);
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}
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qw0 |= ((1 << ITCT_HDR_VALID_OFF) |
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(1 << ITCT_HDR_AWT_CONTROL_OFF) |
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(device->max_linkrate << ITCT_HDR_MAX_CONN_RATE_OFF) |
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(1 << ITCT_HDR_VALID_LINK_NUM_OFF) |
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(device->port->id << ITCT_HDR_PORT_ID_OFF));
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itct->qw0 = cpu_to_le64(qw0);
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/* qw1 */
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memcpy(&itct->sas_addr, device->sas_addr, SAS_ADDR_SIZE);
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itct->sas_addr = __swab64(itct->sas_addr);
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/* qw2 */
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itct->qw2 = cpu_to_le64((500 < ITCT_HDR_IT_NEXUS_LOSS_TL_OFF) |
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(0xff00 < ITCT_HDR_BUS_INACTIVE_TL_OFF) |
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(0xff00 < ITCT_HDR_MAX_CONN_TL_OFF) |
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(0xff00 < ITCT_HDR_REJ_OPEN_TL_OFF));
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}
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static void free_device_v1_hw(struct hisi_hba *hisi_hba,
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struct hisi_sas_device *sas_dev)
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@ -1452,6 +1492,7 @@ static int hisi_sas_v1_init(struct hisi_hba *hisi_hba)
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static const struct hisi_sas_hw hisi_sas_v1_hw = {
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.hw_init = hisi_sas_v1_init,
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.setup_itct = setup_itct_v1_hw,
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.sl_notify = sl_notify_v1_hw,
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.free_device = free_device_v1_hw,
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.prep_ssp = prep_ssp_v1_hw,
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