[PATCH 10/25] scsi: hisi_sas: add misc HBA initialization

John Garry
2015-10-12T15:20:22Z

This includes:
- host port structure initialisation
- host device structure initialisation
- wq initialisation
- host structure timer init
- DMA mask configuration
- call to scan host

Signed-off-by: John Garry <john.garry@huawei.com>
---
drivers/scsi/hisi_sas/hisi_sas.h | 56 +++++++++++++++++++++++++++++++++++
drivers/scsi/hisi_sas/hisi_sas_init.c | 35 ++++++++++++++++++++++
drivers/scsi/hisi_sas/hisi_sas_main.c | 31 +++++++++++++++++++
3 files changed, 122 insertions(+)

diff --git a/drivers/scsi/hisi_sas/hisi_sas.h b/drivers/scsi/hisi_sas/hisi_sas.h
index 6c5d22a..1a26f27 100644
--- a/drivers/scsi/hisi_sas/hisi_sas.h
+++ b/drivers/scsi/hisi_sas/hisi_sas.h
@@ -35,13 +35,36 @@

#define HISI_SAS_NAME_LEN 32

+
+enum dev_status {
+ HISI_SAS_DEV_NORMAL,
+ HISI_SAS_DEV_EH,
+};
+
struct hisi_sas_phy {
+ struct hisi_hba *hisi_hba;
struct hisi_sas_port *port;
struct asd_sas_phy sas_phy;
+ struct sas_identify identify;
+ struct timer_list timer;
+ u64 port_id; /* from hw */
+ u64 dev_sas_addr;
+ u64 phy_type;
+ u64 frame_rcvd_size;
+ u8 frame_rcvd[32];
+ u8 phy_attached;
+ u8 reserved[3];
+ u64 phy_event;
+ int eye_diag_done;
+ enum sas_linkrate minimum_linkrate;
+ enum sas_linkrate maximum_linkrate;
};

struct hisi_sas_port {
struct asd_sas_port sas_port;
+ u8 port_attached;
+ u8 id; /* from hw */
+ struct list_head list;
};

struct hisi_sas_cq {
@@ -49,6 +72,18 @@ struct hisi_sas_cq {
int id;
};

+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;
+ struct hisi_sas_itct *itct;
+ u8 dev_status;
+ u64 reserved;
+};
+
struct hisi_sas_slot {
struct list_head entry;
struct sas_task *task;
@@ -68,6 +103,19 @@ struct hisi_sas_slot {
struct hisi_sas_sge_page *sge_page;
dma_addr_t sge_page_dma;
};
+
+enum hisi_sas_wq_event {
+ PHYUP,
+};
+
+struct hisi_sas_wq {
+ struct work_struct work_struct;
+ struct hisi_hba *hisi_hba;
+ int phy_no;
+ int event;
+ int data;
+};
+
struct hisi_hba {
spinlock_t lock;

@@ -88,6 +136,10 @@ struct hisi_hba {

int n_phy;

+
+ struct timer_list timer;
+ struct workqueue_struct *wq;
+
int slot_index_count;
unsigned long *slot_index_tags;

@@ -103,6 +155,8 @@ struct hisi_hba {
int id;
int queue_count;
char *int_names;
+
+ struct hisi_sas_device devices[HISI_SAS_MAX_DEVICES];
struct dma_pool *command_table_pool;
struct dma_pool *status_buffer_pool;
struct hisi_sas_itct *itct;
@@ -267,4 +321,6 @@ union hisi_sas_command_table {
};

void hisi_sas_slot_index_init(struct hisi_hba *hisi_hba);
+void hisi_sas_phy_init(struct hisi_hba *hisi_hba, int i);
+void hisi_sas_wq_process(struct work_struct *work);
#endif
diff --git a/drivers/scsi/hisi_sas/hisi_sas_init.c b/drivers/scsi/hisi_sas/hisi_sas_init.c
index c295c39..558e0e7 100644
--- a/drivers/scsi/hisi_sas/hisi_sas_init.c
+++ b/drivers/scsi/hisi_sas/hisi_sas_init.c
@@ -41,6 +41,20 @@ static int hisi_sas_alloc(struct hisi_hba *hisi_hba, struct Scsi_Host *shost)
char name[32];
struct device *dev = &hisi_hba->pdev->dev;

+ spin_lock_init(&hisi_hba->lock);
+ for (i = 0; i < hisi_hba->n_phy; i++) {
+ hisi_sas_phy_init(hisi_hba, i);
+ hisi_hba->port[i].port_attached = 0;
+ hisi_hba->port[i].id = -1;
+ INIT_LIST_HEAD(&hisi_hba->port[i].list);
+ }
+
+ 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;
+ }
+
for (i = 0; i < hisi_hba->queue_count; i++) {
struct hisi_sas_cq *cq = &hisi_hba->cq[i];

@@ -139,6 +153,13 @@ static int hisi_sas_alloc(struct hisi_hba *hisi_hba, struct Scsi_Host *shost)

hisi_sas_slot_index_init(hisi_hba);

+ sprintf(name, "%s%d", "hisi_sas", hisi_hba->id);
+ hisi_hba->wq = create_singlethread_workqueue(name);
+ if (!hisi_hba->wq) {
+ dev_err(dev, "sas_alloc: failed to create workqueue\n");
+ goto err_out;
+ }
+
return 0;
err_out:
return -ENOMEM;
@@ -199,6 +220,9 @@ static void hisi_sas_free(struct hisi_hba *hisi_hba)
dma_free_coherent(dev, s,
hisi_hba->sata_breakpoint,
hisi_hba->sata_breakpoint_dma);
+
+ if (hisi_hba->wq)
+ destroy_workqueue(hisi_hba->wq);
}

int hisi_sas_ioremap(struct hisi_hba *hisi_hba)
@@ -244,6 +268,8 @@ static struct hisi_hba *hisi_sas_hba_alloc(

hisi_hba->pdev = pdev;

+ init_timer(&hisi_hba->timer);
+
if (of_property_read_u32(np, "phy-count", &hisi_hba->n_phy))
goto err_out;

@@ -320,6 +346,13 @@ static int hisi_sas_probe(struct platform_device *pdev)
sha = SHOST_TO_SAS_HA(shost) = &hisi_hba->sha;
platform_set_drvdata(pdev, sha);

+ if (dma_set_mask_and_coherent(dev, DMA_BIT_MASK(64)) &&
+ dma_set_mask_and_coherent(dev, DMA_BIT_MASK(32))) {
+ dev_err(dev, "No usable DMA addressing method\n");
+ rc = -EIO;
+ goto err_out_ha;
+ }
+
phy_nr = port_nr = hisi_hba->n_phy;

arr_phy = devm_kcalloc(dev, phy_nr, sizeof(void *), GFP_KERNEL);
@@ -362,6 +395,8 @@ static int hisi_sas_probe(struct platform_device *pdev)
if (rc)
goto err_out_register_ha;

+ scsi_scan_host(shost);
+
return 0;

err_out_register_ha:
diff --git a/drivers/scsi/hisi_sas/hisi_sas_main.c b/drivers/scsi/hisi_sas/hisi_sas_main.c
index 721412e..882ff79 100644
--- a/drivers/scsi/hisi_sas/hisi_sas_main.c
+++ b/drivers/scsi/hisi_sas/hisi_sas_main.c
@@ -26,3 +26,34 @@ void hisi_sas_slot_index_init(struct hisi_hba *hisi_hba)
for (i = 0; i < hisi_hba->slot_index_count; ++i)
hisi_sas_slot_index_clear(hisi_hba, i);
}
+
+void hisi_sas_wq_process(struct work_struct *work)
+{
+ struct hisi_sas_wq *wq =
+ container_of(work, struct hisi_sas_wq, work_struct);
+
+ kfree(wq);
+}
+
+void hisi_sas_phy_init(struct hisi_hba *hisi_hba, int phy_no)
+{
+ struct hisi_sas_phy *phy = &hisi_hba->phy[phy_no];
+ struct asd_sas_phy *sas_phy = &phy->sas_phy;
+
+ phy->hisi_hba = hisi_hba;
+ phy->port = NULL;
+ init_timer(&phy->timer);
+ sas_phy->enabled = (phy_no < hisi_hba->n_phy) ? 1 : 0;
+ sas_phy->class = SAS;
+ sas_phy->iproto = SAS_PROTOCOL_ALL;
+ sas_phy->tproto = 0;
+ sas_phy->type = PHY_TYPE_PHYSICAL;
+ sas_phy->role = PHY_ROLE_INITIATOR;
+ sas_phy->oob_mode = OOB_NOT_CONNECTED;
+ sas_phy->linkrate = SAS_LINK_RATE_UNKNOWN;
+ sas_phy->id = phy_no;
+ sas_phy->sas_addr = &hisi_hba->sas_addr[0];
+ sas_phy->frame_rcvd = &phy->frame_rcvd[0];
+ sas_phy->ha = (struct sas_ha_struct *)hisi_hba->shost->hostdata;
+ sas_phy->lldd_phy = phy;
+}
--
1.9.1