[PATCH] scsi: csiostor: add support for Chelsio T6 adapters

[Varun Prakash <varun@chelsio.com>]

Signed-off-by: Varun Prakash <varun@chelsio.com>
---
 drivers/scsi/csiostor/csio_hw.c      | 79 ++++++++++++++++++++++++++++++------
 drivers/scsi/csiostor/csio_hw_chip.h | 14 +++++++
 drivers/scsi/csiostor/csio_hw_t5.c   | 29 +------------
 drivers/scsi/csiostor/csio_init.c    |  6 ++-
 drivers/scsi/csiostor/csio_wr.c      |  4 +-
 5 files changed, 88 insertions(+), 44 deletions(-)

diff --git a/drivers/scsi/csiostor/csio_hw.c b/drivers/scsi/csiostor/csio_hw.c
index 622bdab..5ca4099 100644
--- a/drivers/scsi/csiostor/csio_hw.c
+++ b/drivers/scsi/csiostor/csio_hw.c
@@ -794,18 +794,24 @@ csio_hw_dev_ready(struct csio_hw *hw)
 {
 	uint32_t reg;
 	int cnt = 6;
+	int src_pf;
 
 	while (((reg = csio_rd_reg32(hw, PL_WHOAMI_A)) == 0xFFFFFFFF) &&
 	       (--cnt != 0))
 		mdelay(100);
 
-	if ((cnt == 0) && (((int32_t)(SOURCEPF_G(reg)) < 0) ||
-			   (SOURCEPF_G(reg) >= CSIO_MAX_PFN))) {
+	if (csio_is_t5(hw->pdev->device & CSIO_HW_CHIP_MASK))
+		src_pf = SOURCEPF_G(reg);
+	else
+		src_pf = T6_SOURCEPF_G(reg);
+
+	if ((cnt == 0) && (((int32_t)(src_pf) < 0) ||
+			   (src_pf >= CSIO_MAX_PFN))) {
 		csio_err(hw, "PL_WHOAMI returned 0x%x, cnt:%d\n", reg, cnt);
 		return -EIO;
 	}
 
-	hw->pfn = SOURCEPF_G(reg);
+	hw->pfn = src_pf;
 
 	return 0;
 }
@@ -1581,10 +1587,16 @@ csio_hw_flash_config(struct csio_hw *hw, u32 *fw_cfg_param, char *path)
 	unsigned int mtype = 0, maddr = 0;
 	uint32_t *cfg_data;
 	int value_to_add = 0;
+	const char *fw_cfg_file;
+
+	if (csio_is_t5(pci_dev->device & CSIO_HW_CHIP_MASK))
+		fw_cfg_file = FW_CFG_NAME_T5;
+	else
+		fw_cfg_file = FW_CFG_NAME_T6;
 
-	if (request_firmware(&cf, FW_CFG_NAME_T5, dev) < 0) {
+	if (request_firmware(&cf, fw_cfg_file, dev) < 0) {
 		csio_err(hw, "could not find config file %s, err: %d\n",
-			 FW_CFG_NAME_T5, ret);
+			 fw_cfg_file, ret);
 		return -ENOENT;
 	}
 
@@ -1623,9 +1635,8 @@ csio_hw_flash_config(struct csio_hw *hw, u32 *fw_cfg_param, char *path)
 		ret = csio_memory_write(hw, mtype, maddr + size, 4, &last.word);
 	}
 	if (ret == 0) {
-		csio_info(hw, "config file upgraded to %s\n",
-			  FW_CFG_NAME_T5);
-		snprintf(path, 64, "%s%s", "/lib/firmware/", FW_CFG_NAME_T5);
+		csio_info(hw, "config file upgraded to %s\n", fw_cfg_file);
+		snprintf(path, 64, "%s%s", "/lib/firmware/", fw_cfg_file);
 	}
 
 leave:
@@ -1883,6 +1894,19 @@ static struct fw_info fw_info_array[] = {
 			.intfver_iscsi = FW_INTFVER(T5, ISCSI),
 			.intfver_fcoe = FW_INTFVER(T5, FCOE),
 		},
+	}, {
+		.chip = CHELSIO_T6,
+		.fs_name = FW_CFG_NAME_T6,
+		.fw_mod_name = FW_FNAME_T6,
+		.fw_hdr = {
+			.chip = FW_HDR_CHIP_T6,
+			.fw_ver = __cpu_to_be32(FW_VERSION(T6)),
+			.intfver_nic = FW_INTFVER(T6, NIC),
+			.intfver_vnic = FW_INTFVER(T6, VNIC),
+			.intfver_ri = FW_INTFVER(T6, RI),
+			.intfver_iscsi = FW_INTFVER(T6, ISCSI),
+			.intfver_fcoe = FW_INTFVER(T6, FCOE),
+		},
 	}
 };
 
@@ -1999,6 +2023,7 @@ csio_hw_flash_fw(struct csio_hw *hw, int *reset)
 	struct device *dev = &pci_dev->dev ;
 	const u8 *fw_data = NULL;
 	unsigned int fw_size = 0;
+	const char *fw_bin_file;
 
 	/* This is the firmware whose headers the driver was compiled
 	 * against
@@ -2011,9 +2036,14 @@ csio_hw_flash_fw(struct csio_hw *hw, int *reset)
 		return -EINVAL;
 	}
 
-	if (request_firmware(&fw, FW_FNAME_T5, dev) < 0) {
+	if (csio_is_t5(pci_dev->device & CSIO_HW_CHIP_MASK))
+		fw_bin_file = FW_FNAME_T5;
+	else
+		fw_bin_file = FW_FNAME_T6;
+
+	if (request_firmware(&fw, fw_bin_file, dev) < 0) {
 		csio_err(hw, "could not find firmware image %s, err: %d\n",
-			 FW_FNAME_T5, ret);
+			 fw_bin_file, ret);
 	} else {
 		fw_data = fw->data;
 		fw_size = fw->size;
@@ -2238,9 +2268,14 @@ static void
 csio_hw_intr_enable(struct csio_hw *hw)
 {
 	uint16_t vec = (uint16_t)csio_get_mb_intr_idx(csio_hw_to_mbm(hw));
-	uint32_t pf = SOURCEPF_G(csio_rd_reg32(hw, PL_WHOAMI_A));
+	u32 pf = 0;
 	uint32_t pl = csio_rd_reg32(hw, PL_INT_ENABLE_A);
 
+	if (csio_is_t5(hw->pdev->device & CSIO_HW_CHIP_MASK))
+		pf = SOURCEPF_G(csio_rd_reg32(hw, PL_WHOAMI_A));
+	else
+		pf = T6_SOURCEPF_G(csio_rd_reg32(hw, PL_WHOAMI_A));
+
 	/*
 	 * Set aivec for MSI/MSIX. PCIE_PF_CFG.INTXType is set up
 	 * by FW, so do nothing for INTX.
@@ -2290,7 +2325,12 @@ csio_hw_intr_enable(struct csio_hw *hw)
 void
 csio_hw_intr_disable(struct csio_hw *hw)
 {
-	uint32_t pf = SOURCEPF_G(csio_rd_reg32(hw, PL_WHOAMI_A));
+	u32 pf = 0;
+
+	if (csio_is_t5(hw->pdev->device & CSIO_HW_CHIP_MASK))
+		pf = SOURCEPF_G(csio_rd_reg32(hw, PL_WHOAMI_A));
+	else
+		pf = T6_SOURCEPF_G(csio_rd_reg32(hw, PL_WHOAMI_A));
 
 	if (!(hw->flags & CSIO_HWF_HW_INTR_ENABLED))
 		return;
@@ -2915,6 +2955,8 @@ static void csio_cplsw_intr_handler(struct csio_hw *hw)
  */
 static void csio_le_intr_handler(struct csio_hw *hw)
 {
+	enum chip_type chip = CHELSIO_CHIP_VERSION(hw->chip_id);
+
 	static struct intr_info le_intr_info[] = {
 		{ LIPMISS_F, "LE LIP miss", -1, 0 },
 		{ LIP0_F, "LE 0 LIP error", -1, 0 },
@@ -2924,7 +2966,18 @@ static void csio_le_intr_handler(struct csio_hw *hw)
 		{ 0, NULL, 0, 0 }
 	};
 
-	if (csio_handle_intr_status(hw, LE_DB_INT_CAUSE_A, le_intr_info))
+	static struct intr_info t6_le_intr_info[] = {
+		{ T6_LIPMISS_F, "LE LIP miss", -1, 0 },
+		{ T6_LIP0_F, "LE 0 LIP error", -1, 0 },
+		{ TCAMINTPERR_F, "LE parity error", -1, 1 },
+		{ T6_UNKNOWNCMD_F, "LE unknown command", -1, 1 },
+		{ SSRAMINTPERR_F, "LE request queue parity error", -1, 1 },
+		{ 0, NULL, 0, 0 }
+	};
+
+	if (csio_handle_intr_status(hw, LE_DB_INT_CAUSE_A,
+				    (chip == CHELSIO_T5) ?
+				    le_intr_info : t6_le_intr_info))
 		csio_hw_fatal_err(hw);
 }
 
diff --git a/drivers/scsi/csiostor/csio_hw_chip.h b/drivers/scsi/csiostor/csio_hw_chip.h
index b56a11d..aaabdbe 100644
--- a/drivers/scsi/csiostor/csio_hw_chip.h
+++ b/drivers/scsi/csiostor/csio_hw_chip.h
@@ -39,11 +39,15 @@
 /* Define MACRO values */
 #define CSIO_HW_T5				0x5000
 #define CSIO_T5_FCOE_ASIC			0x5600
+#define CSIO_HW_T6				0x6000
+#define CSIO_T6_FCOE_ASIC			0x6600
 #define CSIO_HW_CHIP_MASK			0xF000
 
 #define T5_REGMAP_SIZE				(332 * 1024)
 #define FW_FNAME_T5				"cxgb4/t5fw.bin"
 #define FW_CFG_NAME_T5				"cxgb4/t5-config.txt"
+#define FW_FNAME_T6				"cxgb4/t6fw.bin"
+#define FW_CFG_NAME_T6				"cxgb4/t6-config.txt"
 
 #define CHELSIO_CHIP_CODE(version, revision) (((version) << 4) | (revision))
 #define CHELSIO_CHIP_FPGA          0x100
@@ -51,12 +55,17 @@
 #define CHELSIO_CHIP_RELEASE(code) ((code) & 0xf)
 
 #define CHELSIO_T5		0x5
+#define CHELSIO_T6		0x6
 
 enum chip_type {
 	T5_A0 = CHELSIO_CHIP_CODE(CHELSIO_T5, 0),
 	T5_A1 = CHELSIO_CHIP_CODE(CHELSIO_T5, 1),
 	T5_FIRST_REV	= T5_A0,
 	T5_LAST_REV	= T5_A1,
+
+	T6_A0 = CHELSIO_CHIP_CODE(CHELSIO_T6, 0),
+	T6_FIRST_REV    = T6_A0,
+	T6_LAST_REV     = T6_A0,
 };
 
 static inline int csio_is_t5(uint16_t chip)
@@ -64,6 +73,11 @@ static inline int csio_is_t5(uint16_t chip)
 	return (chip == CSIO_HW_T5);
 }
 
+static inline int csio_is_t6(uint16_t chip)
+{
+	return (chip == CSIO_HW_T6);
+}
+
 /* Define MACRO DEFINITIONS */
 #define CSIO_DEVICE(devid, idx)						\
 	{ PCI_VENDOR_ID_CHELSIO, (devid), PCI_ANY_ID, PCI_ANY_ID, 0, 0, (idx) }
diff --git a/drivers/scsi/csiostor/csio_hw_t5.c b/drivers/scsi/csiostor/csio_hw_t5.c
index 3267f4f..f24def6 100644
--- a/drivers/scsi/csiostor/csio_hw_t5.c
+++ b/drivers/scsi/csiostor/csio_hw_t5.c
@@ -71,27 +71,6 @@ csio_t5_set_mem_win(struct csio_hw *hw, uint32_t win)
 static void
 csio_t5_pcie_intr_handler(struct csio_hw *hw)
 {
-	static struct intr_info sysbus_intr_info[] = {
-		{ RNPP_F, "RXNP array parity error", -1, 1 },
-		{ RPCP_F, "RXPC array parity error", -1, 1 },
-		{ RCIP_F, "RXCIF array parity error", -1, 1 },
-		{ RCCP_F, "Rx completions control array parity error", -1, 1 },
-		{ RFTP_F, "RXFT array parity error", -1, 1 },
-		{ 0, NULL, 0, 0 }
-	};
-	static struct intr_info pcie_port_intr_info[] = {
-		{ TPCP_F, "TXPC array parity error", -1, 1 },
-		{ TNPP_F, "TXNP array parity error", -1, 1 },
-		{ TFTP_F, "TXFT array parity error", -1, 1 },
-		{ TCAP_F, "TXCA array parity error", -1, 1 },
-		{ TCIP_F, "TXCIF array parity error", -1, 1 },
-		{ RCAP_F, "RXCA array parity error", -1, 1 },
-		{ OTDD_F, "outbound request TLP discarded", -1, 1 },
-		{ RDPE_F, "Rx data parity error", -1, 1 },
-		{ TDUE_F, "Tx uncorrectable data error", -1, 1 },
-		{ 0, NULL, 0, 0 }
-	};
-
 	static struct intr_info pcie_intr_info[] = {
 		{ MSTGRPPERR_F, "Master Response Read Queue parity error",
 		-1, 1 },
@@ -133,13 +112,7 @@ csio_t5_pcie_intr_handler(struct csio_hw *hw)
 	};
 
 	int fat;
-	fat = csio_handle_intr_status(hw,
-				      PCIE_CORE_UTL_SYSTEM_BUS_AGENT_STATUS_A,
-				      sysbus_intr_info) +
-	      csio_handle_intr_status(hw,
-				      PCIE_CORE_UTL_PCI_EXPRESS_PORT_STATUS_A,
-				      pcie_port_intr_info) +
-	      csio_handle_intr_status(hw, PCIE_INT_CAUSE_A, pcie_intr_info);
+	fat = csio_handle_intr_status(hw, PCIE_INT_CAUSE_A, pcie_intr_info);
 	if (fat)
 		csio_hw_fatal_err(hw);
 }
diff --git a/drivers/scsi/csiostor/csio_init.c b/drivers/scsi/csiostor/csio_init.c
index dbe416f..ea0c310 100644
--- a/drivers/scsi/csiostor/csio_init.c
+++ b/drivers/scsi/csiostor/csio_init.c
@@ -952,8 +952,9 @@ static int csio_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
 	struct csio_hw *hw;
 	struct csio_lnode *ln;
 
-	/* probe only T5 cards */
-	if (!csio_is_t5((pdev->device & CSIO_HW_CHIP_MASK)))
+	/* probe only T5 and T6 cards */
+	if (!csio_is_t5((pdev->device & CSIO_HW_CHIP_MASK)) &&
+	    !csio_is_t6((pdev->device & CSIO_HW_CHIP_MASK)))
 		return -ENODEV;
 
 	rv = csio_pci_init(pdev, &bars);
@@ -1253,3 +1254,4 @@ MODULE_LICENSE(CSIO_DRV_LICENSE);
 MODULE_DEVICE_TABLE(pci, csio_pci_tbl);
 MODULE_VERSION(CSIO_DRV_VERSION);
 MODULE_FIRMWARE(FW_FNAME_T5);
+MODULE_FIRMWARE(FW_FNAME_T6);
diff --git a/drivers/scsi/csiostor/csio_wr.c b/drivers/scsi/csiostor/csio_wr.c
index e8f1817..c0a1778 100644
--- a/drivers/scsi/csiostor/csio_wr.c
+++ b/drivers/scsi/csiostor/csio_wr.c
@@ -480,12 +480,14 @@ csio_wr_iq_create(struct csio_hw *hw, void *priv, int iq_idx,
 
 	flq_idx = csio_q_iq_flq_idx(hw, iq_idx);
 	if (flq_idx != -1) {
+		enum chip_type chip = CHELSIO_CHIP_VERSION(hw->chip_id);
 		struct csio_q *flq = hw->wrm.q_arr[flq_idx];
 
 		iqp.fl0paden	= 1;
 		iqp.fl0packen	= flq->un.fl.packen ? 1 : 0;
 		iqp.fl0fbmin	= X_FETCHBURSTMIN_64B;
-		iqp.fl0fbmax	= X_FETCHBURSTMAX_512B;
+		iqp.fl0fbmax	= ((chip == CHELSIO_T5) ?
+				  X_FETCHBURSTMAX_512B : X_FETCHBURSTMAX_256B);
 		iqp.fl0size	= csio_q_size(hw, flq_idx) / CSIO_QCREDIT_SZ;
 		iqp.fl0addr	= csio_q_pstart(hw, flq_idx);
 	}
-- 
2.0.2