New upstream version 17.11.4upstream/17.11.4

Change-Id: Icb6b9664e7c4adb85c087844abe6e54d6ec32db6
Signed-off-by: Luca Boccassi <luca.boccassi@gmail.com>

4 files changed, 103 insertions, 26 deletions

diff --git a/drivers/net/cxgbe/base/t4_hw.c b/drivers/net/cxgbe/base/t4_hw.c
index 282e2e62..c3d46e02 100644
--- a/drivers/net/cxgbe/base/t4_hw.c
+++ b/drivers/net/cxgbe/base/t4_hw.c
@@ -4242,9 +4242,8 @@ struct flash_desc {
 int t4_get_flash_params(struct adapter *adapter)
 {
 	/*
-	 * Table for non-Numonix supported flash parts.  Numonix parts are left
-	 * to the preexisting well-tested code.  All flash parts have 64KB
-	 * sectors.
+	 * Table for non-standard supported Flash parts.  Note, all Flash
+	 * parts must have 64KB sectors.
 	 */
 	static struct flash_desc supported_flash[] = {
 		{ 0x00150201, 4 << 20 },       /* Spansion 4MB S25FL032P */
@@ -4253,7 +4252,7 @@ int t4_get_flash_params(struct adapter *adapter)
 	int ret;
 	u32 flashid = 0;
 	unsigned int part, manufacturer;
-	unsigned int density, size;
+	unsigned int density, size = 0;
 
 	/**
 	 * Issue a Read ID Command to the Flash part.  We decode supported
@@ -4268,6 +4267,9 @@ int t4_get_flash_params(struct adapter *adapter)
 	if (ret < 0)
 		return ret;
 
+	/**
+	 * Check to see if it's one of our non-standard supported Flash parts.
+	 */
 	for (part = 0; part < ARRAY_SIZE(supported_flash); part++) {
 		if (supported_flash[part].vendor_and_model_id == flashid) {
 			adapter->params.sf_size =
@@ -4278,6 +4280,15 @@ int t4_get_flash_params(struct adapter *adapter)
 		}
 	}
 
+	/**
+	 * Decode Flash part size.  The code below looks repetative with
+	 * common encodings, but that's not guaranteed in the JEDEC
+	 * specification for the Read JADEC ID command.  The only thing that
+	 * we're guaranteed by the JADEC specification is where the
+	 * Manufacturer ID is in the returned result.  After that each
+	 * Manufacturer ~could~ encode things completely differently.
+	 * Note, all Flash parts must have 64KB sectors.
+	 */
 	manufacturer = flashid & 0xff;
 	switch (manufacturer) {
 	case 0x20: { /* Micron/Numonix */
@@ -4314,20 +4325,80 @@ int t4_get_flash_params(struct adapter *adapter)
 		case 0x22:
 			size = 1 << 28; /* 256MB */
 			break;
-		default:
-			dev_err(adapter, "Micron Flash Part has bad size, ID = %#x, Density code = %#x\n",
-				flashid, density);
-			return -EINVAL;
 		}
+		break;
+	}
 
-		adapter->params.sf_size = size;
-		adapter->params.sf_nsec = size / SF_SEC_SIZE;
+	case 0x9d: { /* ISSI -- Integrated Silicon Solution, Inc. */
+		/**
+		 * This Density -> Size decoding table is taken from ISSI
+		 * Data Sheets.
+		 */
+		density = (flashid >> 16) & 0xff;
+		switch (density) {
+		case 0x16:
+			size = 1 << 25; /* 32MB */
+			break;
+		case 0x17:
+			size = 1 << 26; /* 64MB */
+			break;
+		}
 		break;
 	}
-	default:
-		dev_err(adapter, "Unsupported Flash Part, ID = %#x\n", flashid);
-		return -EINVAL;
+
+	case 0xc2: { /* Macronix */
+		/**
+		 * This Density -> Size decoding table is taken from Macronix
+		 * Data Sheets.
+		 */
+		density = (flashid >> 16) & 0xff;
+		switch (density) {
+		case 0x17:
+			size = 1 << 23; /* 8MB */
+			break;
+		case 0x18:
+			size = 1 << 24; /* 16MB */
+			break;
+		}
+		break;
+	}
+
+	case 0xef: { /* Winbond */
+		/**
+		 * This Density -> Size decoding table is taken from Winbond
+		 * Data Sheets.
+		 */
+		density = (flashid >> 16) & 0xff;
+		switch (density) {
+		case 0x17:
+			size = 1 << 23; /* 8MB */
+			break;
+		case 0x18:
+			size = 1 << 24; /* 16MB */
+			break;
+		}
+		break;
 	}
+	}
+
+	/* If we didn't recognize the FLASH part, that's no real issue: the
+	 * Hardware/Software contract says that Hardware will _*ALWAYS*_
+	 * use a FLASH part which is at least 4MB in size and has 64KB
+	 * sectors.  The unrecognized FLASH part is likely to be much larger
+	 * than 4MB, but that's all we really need.
+	 */
+	if (size == 0) {
+		dev_warn(adapter,
+			 "Unknown Flash Part, ID = %#x, assuming 4MB\n",
+			 flashid);
+		size = 1 << 22;
+	}
+
+	/**
+	 * Store decoded Flash size and fall through into vetting code.
+	 */
+	adapter->params.sf_size = size;
+	adapter->params.sf_nsec = size / SF_SEC_SIZE;
 
 found:
 	/*
diff --git a/drivers/net/cxgbe/base/t4fw_interface.h b/drivers/net/cxgbe/base/t4fw_interface.h
index 6ca4f318..f0566e93 100644
--- a/drivers/net/cxgbe/base/t4fw_interface.h
+++ b/drivers/net/cxgbe/base/t4fw_interface.h
@@ -473,6 +473,11 @@ enum fw_iq_type {
 	FW_IQ_TYPE_FL_INT_CAP,
 };
 
+enum fw_iq_iqtype {
+	FW_IQ_IQTYPE_NIC = 1,
+	FW_IQ_IQTYPE_OFLD,
+};
+
 struct fw_iq_cmd {
 	__be32 op_to_vfn;
 	__be32 alloc_to_len16;
@@ -606,6 +611,9 @@ struct fw_iq_cmd {
 	(((x) >> S_FW_IQ_CMD_IQFLINTCONGEN) & M_FW_IQ_CMD_IQFLINTCONGEN)
 #define F_FW_IQ_CMD_IQFLINTCONGEN	V_FW_IQ_CMD_IQFLINTCONGEN(1U)
 
+#define S_FW_IQ_CMD_IQTYPE	24
+#define V_FW_IQ_CMD_IQTYPE(x)	((x) << S_FW_IQ_CMD_IQTYPE)
+
 #define S_FW_IQ_CMD_FL0CNGCHMAP		20
 #define M_FW_IQ_CMD_FL0CNGCHMAP		0xf
 #define V_FW_IQ_CMD_FL0CNGCHMAP(x)	((x) << S_FW_IQ_CMD_FL0CNGCHMAP)
diff --git a/drivers/net/cxgbe/cxgbe_compat.h b/drivers/net/cxgbe/cxgbe_compat.h
index 03bba9fe..c1cc936d 100644
--- a/drivers/net/cxgbe/cxgbe_compat.h
+++ b/drivers/net/cxgbe/cxgbe_compat.h
@@ -226,15 +226,6 @@ static inline int cxgbe_fls(int x)
 	return x ? sizeof(x) * 8 - __builtin_clz(x) : 0;
 }
 
-/**
- * cxgbe_ffs - find first bit set
- * @x: the word to search
- */
-static inline int cxgbe_ffs(int x)
-{
-	return x ? __builtin_ffs(x) : 0;
-}
-
 static inline unsigned long ilog2(unsigned long n)
 {
 	unsigned int e = 0;
diff --git a/drivers/net/cxgbe/sge.c b/drivers/net/cxgbe/sge.c
index fc10d958..51800845 100644
--- a/drivers/net/cxgbe/sge.c
+++ b/drivers/net/cxgbe/sge.c
@@ -1689,6 +1689,7 @@ int t4_sge_alloc_rxq(struct adapter *adap, struct sge_rspq *iq, bool fwevtq,
 	char z_name[RTE_MEMZONE_NAMESIZE];
 	char z_name_sw[RTE_MEMZONE_NAMESIZE];
 	unsigned int nb_refill;
+	u8 pciechan;
 
 	/* Size needs to be multiple of 16, including status entry. */
 	iq->size = cxgbe_roundup(iq->size, 16);
@@ -1708,6 +1709,9 @@ int t4_sge_alloc_rxq(struct adapter *adap, struct sge_rspq *iq, bool fwevtq,
 	c.op_to_vfn = htonl(V_FW_CMD_OP(FW_IQ_CMD) | F_FW_CMD_REQUEST |
 			    F_FW_CMD_WRITE | F_FW_CMD_EXEC |
 			    V_FW_IQ_CMD_PFN(adap->pf) | V_FW_IQ_CMD_VFN(0));
+
+	pciechan = pi->tx_chan;
+
 	c.alloc_to_len16 = htonl(F_FW_IQ_CMD_ALLOC | F_FW_IQ_CMD_IQSTART |
 				 (sizeof(c) / 16));
 	c.type_to_iqandstindex =
@@ -1719,16 +1723,19 @@ int t4_sge_alloc_rxq(struct adapter *adap, struct sge_rspq *iq, bool fwevtq,
 		      V_FW_IQ_CMD_IQANDSTINDEX(intr_idx >= 0 ? intr_idx :
 							       -intr_idx - 1));
 	c.iqdroprss_to_iqesize =
-		htons(V_FW_IQ_CMD_IQPCIECH(cong > 0 ? cxgbe_ffs(cong) - 1 :
-						      pi->tx_chan) |
+		htons(V_FW_IQ_CMD_IQPCIECH(pciechan) |
 		      F_FW_IQ_CMD_IQGTSMODE |
 		      V_FW_IQ_CMD_IQINTCNTTHRESH(iq->pktcnt_idx) |
 		      V_FW_IQ_CMD_IQESIZE(ilog2(iq->iqe_len) - 4));
 	c.iqsize = htons(iq->size);
 	c.iqaddr = cpu_to_be64(iq->phys_addr);
 	if (cong >= 0)
-		c.iqns_to_fl0congen = htonl(F_FW_IQ_CMD_IQFLINTCONGEN |
-					    F_FW_IQ_CMD_IQRO);
+		c.iqns_to_fl0congen =
+			htonl(F_FW_IQ_CMD_IQFLINTCONGEN |
+			      V_FW_IQ_CMD_IQTYPE(cong ?
+						 FW_IQ_IQTYPE_NIC :
+						 FW_IQ_IQTYPE_OFLD) |
+			      F_FW_IQ_CMD_IQRO);
 
 	if (fl) {
 		struct sge_eth_rxq *rxq = container_of(fl, struct sge_eth_rxq,