From: Ganesh Goudar <ganeshgr@chelsio.com>
Date: Fri, 23 Mar 2018 17:05:49 +0530
Subject: cxgb4: support new ISSI flash parts
Patch-mainline: v4.17-rc1
Git-commit: 0f1417f9f0ed3f367502011b187a293cea0e2435
References: bsc#1097585 bsc#1097586 bsc#1097587 bsc#1097588 bsc#1097583 bsc#1097584

Add support for new 32MB and 64MB ISSI (Integrated Silicon
Solution, Inc.) FLASH parts.

Signed-off-by: Casey Leedom <leedom@chelsio.com>
Signed-off-by: Ganesh Goudar <ganeshgr@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
 drivers/net/ethernet/chelsio/cxgb4/t4_hw.c |   19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

--- a/drivers/net/ethernet/chelsio/cxgb4/t4_hw.c
+++ b/drivers/net/ethernet/chelsio/cxgb4/t4_hw.c
@@ -8601,6 +8601,25 @@ static int t4_get_flash_params(struct ad
 		}
 		break;
 	}
+	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: /* 32 MB */
+			size = 1 << 25;
+			break;
+		case 0x17: /* 64MB */
+			size = 1 << 26;
+			break;
+		default:
+			dev_err(adap->pdev_dev, "ISSI Flash Part has bad size, ID = %#x, Density code = %#x\n",
+				flashid, density);
+			return -EINVAL;
+		}
+		break;
+	}
 	case 0xc2: { /* Macronix */
 		/* This Density -> Size decoding table is taken from Macronix
 		 * Data Sheets.