From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([208.118.235.92]:36480) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Tw5Ji-0002eM-Up for qemu-devel@nongnu.org; Fri, 18 Jan 2013 01:20:46 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1Tw5Jg-0002ZM-A7 for qemu-devel@nongnu.org; Fri, 18 Jan 2013 01:20:42 -0500 Received: from ftcsun4.faraday-tech.com ([60.248.181.187]:56107 helo=ftcsun4.faraday.com.tw) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Tw5Jf-0002Z7-Cc for qemu-devel@nongnu.org; Fri, 18 Jan 2013 01:20:40 -0500 Received: from ftcpcs100.faraday.com.tw ([192.168.31.10]) by ftcsun4.faraday.com.tw (8.11.7p1+Sun/8.11.6) with ESMTP id r0I6KZm07026 for ; Fri, 18 Jan 2013 14:20:35 +0800 (CST) From: Dante Date: Fri, 18 Jan 2013 14:20:19 +0800 Message-ID: <1358490020-18061-1-git-send-email-dantesu@faraday-tech.com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Subject: [Qemu-devel] [PATCH 1/2] hw/nand.c: bug fix to BUSY/READY status bit List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: balrog@zabor.org, Dante The status register coding for BUSY/READY(BIT6) is actually [Busy:0, Ready:1]. BTW, this patch not only apply the bug fix to status bit, but also update the Busy/Ready status upon nand flash read/write/erase. Signed-off-by: Kuo-Jung Su --- hw/nand.c | 16 +++++++++++++++- 1 file changed, 15 insertions(+), 1 deletion(-) diff --git a/hw/nand.c b/hw/nand.c index 6054f46..76479ed 100644 --- a/hw/nand.c +++ b/hw/nand.c @@ -46,7 +46,7 @@ # define NAND_IOSTATUS_PLANE1 (1 << 2) # define NAND_IOSTATUS_PLANE2 (1 << 3) # define NAND_IOSTATUS_PLANE3 (1 << 4) -# define NAND_IOSTATUS_BUSY (1 << 6) +# define NAND_IOSTATUS_READY (1 << 6) # define NAND_IOSTATUS_UNPROTCT (1 << 7) # define MAX_PAGE 0x800 @@ -646,6 +646,8 @@ static void glue(nand_blk_write_, PAGE_SIZE)(NANDFlashState *s) uint8_t iobuf[(PAGE_SECTORS + 2) * 0x200]; if (PAGE(s->addr) >= s->pages) return; + + s->status &= ~NAND_IOSTATUS_READY; if (!s->bdrv) { mem_and(s->storage + PAGE_START(s->addr) + (s->addr & PAGE_MASK) + @@ -656,6 +658,7 @@ static void glue(nand_blk_write_, PAGE_SIZE)(NANDFlashState *s) soff = SECTOR_OFFSET(s->addr); if (bdrv_read(s->bdrv, sector, iobuf, PAGE_SECTORS) < 0) { printf("%s: read error in sector %" PRIu64 "\n", __func__, sector); + s->status |= NAND_IOSTATUS_READY; return; } @@ -675,6 +678,7 @@ static void glue(nand_blk_write_, PAGE_SIZE)(NANDFlashState *s) soff = off & 0x1ff; if (bdrv_read(s->bdrv, sector, iobuf, PAGE_SECTORS + 2) < 0) { printf("%s: read error in sector %" PRIu64 "\n", __func__, sector); + s->status |= NAND_IOSTATUS_READY; return; } @@ -685,6 +689,8 @@ static void glue(nand_blk_write_, PAGE_SIZE)(NANDFlashState *s) } } s->offset = 0; + + s->status |= NAND_IOSTATUS_READY; } /* Erase a single block */ @@ -696,6 +702,8 @@ static void glue(nand_blk_erase_, PAGE_SIZE)(NANDFlashState *s) if (PAGE(addr) >= s->pages) return; + + s->status &= ~NAND_IOSTATUS_READY; if (!s->bdrv) { memset(s->storage + PAGE_START(addr), @@ -738,6 +746,8 @@ static void glue(nand_blk_erase_, PAGE_SIZE)(NANDFlashState *s) printf("%s: write error in sector %" PRIu64 "\n", __func__, page); } } + + s->status |= NAND_IOSTATUS_READY; } static void glue(nand_blk_load_, PAGE_SIZE)(NANDFlashState *s, @@ -745,6 +755,8 @@ static void glue(nand_blk_load_, PAGE_SIZE)(NANDFlashState *s, { if (PAGE(addr) >= s->pages) return; + + s->status &= ~NAND_IOSTATUS_READY; if (s->bdrv) { if (s->mem_oob) { @@ -769,6 +781,8 @@ static void glue(nand_blk_load_, PAGE_SIZE)(NANDFlashState *s, offset, PAGE_SIZE + OOB_SIZE - offset); s->ioaddr = s->io; } + + s->status |= NAND_IOSTATUS_READY; } static void glue(nand_init_, PAGE_SIZE)(NANDFlashState *s) -- 1.7.9.5 ********************* Confidentiality Notice ************************ This electronic message and any attachments may contain confidential and legally privileged information or information which is otherwise protected from disclosure. If you are not the intended recipient,please do not disclose the contents, either in whole or in part, to anyone,and immediately delete the message and any attachments from your computer system and destroy all hard copies. Thank you for your cooperation. ***********************************************************************