linux-kernel - [PATCH] mmc: card: Skip secure option for MoviNAND.

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Date:	Mon, 13 Aug 2012 18:50:37 +0900
From:	IAN CHEN <ian.cy.chen@...sung.com>
To:	cjb@...top.org, linkinjeon@...il.com, adrian.hunter@...el.com,
	subhashj@...eaurora.org, linus.walleij@...aro.org,
	linux-mmc@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:	d.j.shin@...sung.com, jongtae22.kim@...sung.com,
	kyungmin.park@...sung.com, jh80.chung@...sung.com,
	ian.cy.chen@...sung.com
Subject: [PATCH] mmc: card: Skip secure option for MoviNAND.

>From 5c60eb8be04c7440d6e33b8f72ea2046a3657ac4 Mon Sep 17 00:00:00 2001
From: ian.cy.chen <ian.cy.chen@...sung.com>
Date: Mon, 13 Aug 2012 10:53:55 +0900
Subject: [PATCH] mmc: card: Skip secure option for MoviNAND.

For several MoviNAND, there are some known issue with secure option.
For these specific MoviNAND device, we skip secure option.

Signed-off-by: Ian Chen <ian.cy.chen@...sung.com>
---
 drivers/mmc/card/block.c |   24 +++++++++++++++++++++++-
 include/linux/mmc/card.h |    1 +
 2 files changed, 24 insertions(+), 1 deletions(-)

diff --git a/drivers/mmc/card/block.c b/drivers/mmc/card/block.c
index f1c84de..9f47dbf 100644
--- a/drivers/mmc/card/block.c
+++ b/drivers/mmc/card/block.c
@@ -1411,7 +1411,8 @@ static int mmc_blk_issue_rq(struct mmc_queue *mq,
struct request *req)
         /* complete ongoing async transfer before issuing discard */
         if (card->host->areq)
             mmc_blk_issue_rw_rq(mq, NULL);
-        if (req->cmd_flags & REQ_SECURE)
+        if (req->cmd_flags & REQ_SECURE &&
+            !(card->quirks & MMC_QUIRK_MOVINAND_SECURE))
             ret = mmc_blk_issue_secdiscard_rq(mq, req);
         else
             ret = mmc_blk_issue_discard_rq(mq, req);
@@ -1716,6 +1717,7 @@ force_ro_fail:
 #define CID_MANFID_SANDISK    0x2
 #define CID_MANFID_TOSHIBA    0x11
 #define CID_MANFID_MICRON    0x13
+#define CID_MANFID_SAMSUNG    0x15
 
 static const struct mmc_fixup blk_fixups[] =
 {
@@ -1752,6 +1754,26 @@ static const struct mmc_fixup blk_fixups[] =
     MMC_FIXUP(CID_NAME_ANY, CID_MANFID_MICRON, 0x200, add_quirk_mmc,
           MMC_QUIRK_LONG_READ_TIME),
 
+    /*
+     * Some issue about secure erase/secure trim for Samsung MoviNAND
+     */
+    MMC_FIXUP("M8G2FA", CID_MANFID_SAMSUNG, CID_OEMID_ANY, add_quirk_mmc,
+          MMC_QUIRK_MOVINAND_SECURE),
+    MMC_FIXUP("MAG4FA", CID_MANFID_SAMSUNG, CID_OEMID_ANY, add_quirk_mmc,
+          MMC_QUIRK_MOVINAND_SECURE),
+    MMC_FIXUP("MBG8FA", CID_MANFID_SAMSUNG, CID_OEMID_ANY, add_quirk_mmc,
+          MMC_QUIRK_MOVINAND_SECURE),
+    MMC_FIXUP("MCGAFA", CID_MANFID_SAMSUNG, CID_OEMID_ANY, add_quirk_mmc,
+          MMC_QUIRK_MOVINAND_SECURE),
+    MMC_FIXUP("VAL00M", CID_MANFID_SAMSUNG, CID_OEMID_ANY, add_quirk_mmc,
+          MMC_QUIRK_MOVINAND_SECURE),
+    MMC_FIXUP("VYL00M", CID_MANFID_SAMSUNG, CID_OEMID_ANY, add_quirk_mmc,
+          MMC_QUIRK_MOVINAND_SECURE),
+    MMC_FIXUP("KYL00M", CID_MANFID_SAMSUNG, CID_OEMID_ANY, add_quirk_mmc,
+          MMC_QUIRK_MOVINAND_SECURE),
+    MMC_FIXUP("VZL00M", CID_MANFID_SAMSUNG, CID_OEMID_ANY, add_quirk_mmc,
+          MMC_QUIRK_MOVINAND_SECURE),
+
     END_FIXUP
 };
 
diff --git a/include/linux/mmc/card.h b/include/linux/mmc/card.h
index 111aca5..4505a30 100644
--- a/include/linux/mmc/card.h
+++ b/include/linux/mmc/card.h
@@ -239,6 +239,7 @@ struct mmc_card {
 #define MMC_QUIRK_BLK_NO_CMD23    (1<<7)        /* Avoid CMD23 for
regular multiblock */
 #define MMC_QUIRK_BROKEN_BYTE_MODE_512 (1<<8)    /* Avoid sending 512
bytes in */
 #define MMC_QUIRK_LONG_READ_TIME (1<<9)        /* Data read time > CSD
says */
+#define MMC_QUIRK_MOVINAND_SECURE (1<<10)    /* MoviNAND secure issue */
                         /* byte mode */
     unsigned int    poweroff_notify_state;    /* eMMC4.5 notify feature */
 #define MMC_NO_POWER_NOTIFICATION    0
-- 
1.7.0.4
--
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