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Message-ID: <1495018197-120535-18-git-send-email-john.garry@huawei.com>
Date: Wed, 17 May 2017 18:49:52 +0800
From: John Garry <john.garry@...wei.com>
To: <jejb@...ux.vnet.ibm.com>, <martin.petersen@...cle.com>
CC: <john.garry2@...l.dcu.ie>, <linuxarm@...wei.com>,
<linux-scsi@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
<arnd@...db.de>, Xiang Chen <chenxiang66@...ilicon.com>,
John Garry <john.garry@...wei.com>
Subject: [PATCH 17/22] scsi: hisi_sas: add v3 code for itct setup and free
From: Xiang Chen <chenxiang66@...ilicon.com>
Add code for itct setup and free for v3 hw.
Signed-off-by: John Garry <john.garry@...wei.com>
Signed-off-by: Xiang Chen <chenxiang66@...ilicon.com>
---
drivers/scsi/hisi_sas/hisi_sas_v3_hw.c | 115 +++++++++++++++++++++++++++++++++
1 file changed, 115 insertions(+)
diff --git a/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c b/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c
index 976c6e6..cbc2640 100644
--- a/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c
+++ b/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c
@@ -24,6 +24,11 @@
#define PHY_PORT_NUM_MA 0x28
#define PHY_CONN_RATE 0x30
#define AXI_AHB_CLK_CFG 0x3c
+#define ITCT_CLR 0x44
+#define ITCT_CLR_EN_OFF 16
+#define ITCT_CLR_EN_MSK (0x1 << ITCT_CLR_EN_OFF)
+#define ITCT_DEV_OFF 0
+#define ITCT_DEV_MSK (0x7ff << ITCT_DEV_OFF)
#define AXI_USER1 0x48
#define AXI_USER2 0x4c
#define IO_SATA_BROKEN_MSG_ADDR_LO 0x58
@@ -226,6 +231,27 @@
#define CMPLT_HDR_IO_IN_TARGET_OFF 17
#define CMPLT_HDR_IO_IN_TARGET_MSK (0x1 << CMPLT_HDR_IO_IN_TARGET_OFF)
+/* ITCT header */
+/* qw0 */
+#define ITCT_HDR_DEV_TYPE_OFF 0
+#define ITCT_HDR_DEV_TYPE_MSK (0x3 << ITCT_HDR_DEV_TYPE_OFF)
+#define ITCT_HDR_VALID_OFF 2
+#define ITCT_HDR_VALID_MSK (0x1 << ITCT_HDR_VALID_OFF)
+#define ITCT_HDR_MCR_OFF 5
+#define ITCT_HDR_MCR_MSK (0xf << ITCT_HDR_MCR_OFF)
+#define ITCT_HDR_VLN_OFF 9
+#define ITCT_HDR_VLN_MSK (0xf << ITCT_HDR_VLN_OFF)
+#define ITCT_HDR_SMP_TIMEOUT_OFF 16
+#define ITCT_HDR_AWT_CONTINUE_OFF 25
+#define ITCT_HDR_PORT_ID_OFF 28
+#define ITCT_HDR_PORT_ID_MSK (0xf << ITCT_HDR_PORT_ID_OFF)
+/* qw2 */
+#define ITCT_HDR_INLT_OFF 0
+#define ITCT_HDR_INLT_MSK (0xffffULL << ITCT_HDR_INLT_OFF)
+#define ITCT_HDR_RTOLT_OFF 48
+#define ITCT_HDR_RTOLT_MSK (0xffffULL << ITCT_HDR_RTOLT_OFF)
+
+
struct hisi_sas_complete_v3_hdr {
__le32 dw0;
__le32 dw1;
@@ -444,6 +470,93 @@ static void config_id_frame_v3_hw(struct hisi_hba *hisi_hba, int phy_no)
__swab32(identify_buffer[5]));
}
+static void setup_itct_v3_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->dev;
+ u64 qw0, device_id = sas_dev->device_id;
+ struct hisi_sas_itct *itct = &hisi_hba->itct[device_id];
+ struct domain_device *parent_dev = device->parent;
+ struct asd_sas_port *sas_port = device->port;
+ struct hisi_sas_port *port = to_hisi_sas_port(sas_port);
+
+ 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;
+ case SAS_SATA_DEV:
+ case SAS_SATA_PENDING:
+ if (parent_dev && DEV_IS_EXPANDER(parent_dev->dev_type))
+ qw0 = HISI_SAS_DEV_TYPE_STP << ITCT_HDR_DEV_TYPE_OFF;
+ else
+ qw0 = HISI_SAS_DEV_TYPE_SATA << 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) |
+ (device->linkrate << ITCT_HDR_MCR_OFF) |
+ (1 << ITCT_HDR_VLN_OFF) |
+ (0xfa << ITCT_HDR_SMP_TIMEOUT_OFF) |
+ (1 << ITCT_HDR_AWT_CONTINUE_OFF) |
+ (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 */
+ if (!dev_is_sata(device))
+ itct->qw2 = cpu_to_le64((5000ULL << ITCT_HDR_INLT_OFF) |
+ (0x1ULL << ITCT_HDR_RTOLT_OFF));
+}
+
+static void free_device_v3_hw(struct hisi_hba *hisi_hba,
+ struct hisi_sas_device *sas_dev)
+{
+ u64 dev_id = sas_dev->device_id;
+ struct device *dev = hisi_hba->dev;
+ struct hisi_sas_itct *itct = &hisi_hba->itct[dev_id];
+ u32 reg_val = hisi_sas_read32(hisi_hba, ENT_INT_SRC3);
+
+ /* clear the itct interrupt state */
+ if (ENT_INT_SRC3_ITC_INT_MSK & reg_val)
+ hisi_sas_write32(hisi_hba, ENT_INT_SRC3,
+ ENT_INT_SRC3_ITC_INT_MSK);
+
+ /* clear the itct table*/
+ reg_val = hisi_sas_read32(hisi_hba, ITCT_CLR);
+ reg_val |= ITCT_CLR_EN_MSK | (dev_id & ITCT_DEV_MSK);
+ hisi_sas_write32(hisi_hba, ITCT_CLR, reg_val);
+
+ udelay(10);
+ reg_val = hisi_sas_read32(hisi_hba, ENT_INT_SRC3);
+ if (ENT_INT_SRC3_ITC_INT_MSK & reg_val) {
+ dev_dbg(dev, "got clear ITCT done interrupt\n");
+
+ /* invalid the itct state*/
+ memset(itct, 0, sizeof(struct hisi_sas_itct));
+ hisi_sas_write32(hisi_hba, ENT_INT_SRC3,
+ ENT_INT_SRC3_ITC_INT_MSK);
+ hisi_hba->devices[dev_id].dev_type = SAS_PHY_UNUSED;
+ hisi_hba->devices[dev_id].dev_status = HISI_SAS_DEV_NORMAL;
+
+ /* clear the itct */
+ hisi_sas_write32(hisi_hba, ITCT_CLR, 0);
+ dev_dbg(dev, "clear ITCT ok\n");
+ }
+}
+
static int hw_init_v3_hw(struct hisi_hba *hisi_hba)
{
init_reg_v3_hw(hisi_hba);
@@ -1405,9 +1518,11 @@ static int hisi_sas_v3_init(struct hisi_hba *hisi_hba)
static const struct hisi_sas_hw hisi_sas_v3_hw = {
.hw_init = hisi_sas_v3_init,
+ .setup_itct = setup_itct_v3_hw,
.max_command_entries = HISI_SAS_COMMAND_ENTRIES_V3_HW,
.sl_notify = sl_notify_v3_hw,
.complete_hdr_size = sizeof(struct hisi_sas_complete_v3_hdr),
+ .free_device = free_device_v3_hw,
.prep_ssp = prep_ssp_v3_hw,
.prep_smp = prep_smp_v3_hw,
.prep_stp = prep_ata_v3_hw,
--
1.9.1
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