From patchwork Tue Mar 22 10:06:22 2011 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sriram X-Patchwork-Id: 652141 Received: from bear.ext.ti.com (bear.ext.ti.com [192.94.94.41]) by demeter1.kernel.org (8.14.4/8.14.3) with ESMTP id p2MA8kax025210 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK) for ; Tue, 22 Mar 2011 10:09:07 GMT Received: from dlep34.itg.ti.com ([157.170.170.115]) by bear.ext.ti.com (8.13.7/8.13.7) with ESMTP id p2MA6VhE009623 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Tue, 22 Mar 2011 05:06:31 -0500 Received: from linux.omap.com (localhost [127.0.0.1]) by dlep34.itg.ti.com (8.13.7/8.13.7) with ESMTP id p2MA6UVk003297; Tue, 22 Mar 2011 05:06:30 -0500 (CDT) Received: from linux.omap.com (localhost [127.0.0.1]) by linux.omap.com (Postfix) with ESMTP id 65DAA80627; Tue, 22 Mar 2011 04:06:30 -0600 (CST) X-Original-To: davinci-linux-open-source@linux.davincidsp.com Delivered-To: davinci-linux-open-source@linux.davincidsp.com Received: from dbdp31.itg.ti.com (dbdp31.itg.ti.com [172.24.170.98]) by linux.omap.com (Postfix) with ESMTP id 0F32580626 for ; Tue, 22 Mar 2011 04:06:27 -0600 (CST) Received: from psplinux050.india.ti.com (localhost [127.0.0.1]) by dbdp31.itg.ti.com (8.13.8/8.13.8) with ESMTP id p2MA6N4s011755; Tue, 22 Mar 2011 15:36:23 +0530 (IST) Received: from psplinux050.india.ti.com (localhost [127.0.0.1]) by psplinux050.india.ti.com (8.13.1/8.13.1) with ESMTP id p2MA6MQq012690; Tue, 22 Mar 2011 15:36:22 +0530 Received: (from a0875517@localhost) by psplinux050.india.ti.com (8.13.1/8.13.1/Submit) id p2MA6MNo012687; Tue, 22 Mar 2011 15:36:22 +0530 From: Sriramakrishnan To: netdev@vger.kernel.org Subject: [PATCH] net: davinci_emac:Fix translation logic for buffer descriptor Date: Tue, 22 Mar 2011 15:36:22 +0530 Message-Id: <1300788382-12658-1-git-send-email-srk@ti.com> X-Mailer: git-send-email 1.6.2.4 Cc: srk@ti.com, davinci-linux-open-source@linux.davincidsp.com, davem@davemloft.net X-BeenThere: davinci-linux-open-source@linux.davincidsp.com X-Mailman-Version: 2.1.12 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: davinci-linux-open-source-bounces@linux.davincidsp.com Errors-To: davinci-linux-open-source-bounces@linux.davincidsp.com X-Greylist: Sender succeeded STARTTLS authentication, not delayed by milter-greylist-4.2.6 (demeter1.kernel.org [140.211.167.41]); Tue, 22 Mar 2011 10:09:07 +0000 (UTC) diff --git a/drivers/net/davinci_cpdma.c b/drivers/net/davinci_cpdma.c index e92b2b6..ae47f23 100644 --- a/drivers/net/davinci_cpdma.c +++ b/drivers/net/davinci_cpdma.c @@ -76,6 +76,7 @@ struct cpdma_desc { struct cpdma_desc_pool { u32 phys; + u32 hw_addr; void __iomem *iomap; /* ioremap map */ void *cpumap; /* dma_alloc map */ int desc_size, mem_size; @@ -137,7 +138,8 @@ struct cpdma_chan { * abstract out these details */ static struct cpdma_desc_pool * -cpdma_desc_pool_create(struct device *dev, u32 phys, int size, int align) +cpdma_desc_pool_create(struct device *dev, u32 phys, u32 hw_addr, + int size, int align) { int bitmap_size; struct cpdma_desc_pool *pool; @@ -161,10 +163,12 @@ cpdma_desc_pool_create(struct device *dev, u32 phys, int size, int align) if (phys) { pool->phys = phys; pool->iomap = ioremap(phys, size); + pool->hw_addr = hw_addr; } else { pool->cpumap = dma_alloc_coherent(dev, size, &pool->phys, GFP_KERNEL); pool->iomap = (void __force __iomem *)pool->cpumap; + pool->hw_addr = pool->phys; } if (pool->iomap) @@ -201,14 +205,14 @@ static inline dma_addr_t desc_phys(struct cpdma_desc_pool *pool, { if (!desc) return 0; - return pool->phys + (__force dma_addr_t)desc - + return pool->hw_addr + (__force dma_addr_t)desc - (__force dma_addr_t)pool->iomap; } static inline struct cpdma_desc __iomem * desc_from_phys(struct cpdma_desc_pool *pool, dma_addr_t dma) { - return dma ? pool->iomap + dma - pool->phys : NULL; + return dma ? pool->iomap + dma - pool->hw_addr : NULL; } static struct cpdma_desc __iomem * @@ -260,6 +264,7 @@ struct cpdma_ctlr *cpdma_ctlr_create(struct cpdma_params *params) ctlr->pool = cpdma_desc_pool_create(ctlr->dev, ctlr->params.desc_mem_phys, + ctlr->params.desc_hw_addr, ctlr->params.desc_mem_size, ctlr->params.desc_align); if (!ctlr->pool) { diff --git a/drivers/net/davinci_cpdma.h b/drivers/net/davinci_cpdma.h index 868e50e..afa19a0 100644 --- a/drivers/net/davinci_cpdma.h +++ b/drivers/net/davinci_cpdma.h @@ -33,6 +33,7 @@ struct cpdma_params { bool has_soft_reset; int min_packet_size; u32 desc_mem_phys; + u32 desc_hw_addr; int desc_mem_size; int desc_align; diff --git a/drivers/net/davinci_emac.c b/drivers/net/davinci_emac.c index 082d6ea..df850fc 100644 --- a/drivers/net/davinci_emac.c +++ b/drivers/net/davinci_emac.c @@ -1854,10 +1854,13 @@ static int __devinit davinci_emac_probe(struct platform_device *pdev) dma_params.rxcp = priv->emac_base + 0x660; dma_params.num_chan = EMAC_MAX_TXRX_CHANNELS; dma_params.min_packet_size = EMAC_DEF_MIN_ETHPKTSIZE; - dma_params.desc_mem_phys = hw_ram_addr; + dma_params.desc_hw_addr = hw_ram_addr; dma_params.desc_mem_size = pdata->ctrl_ram_size; dma_params.desc_align = 16; + dma_params.desc_mem_phys = (pdata->no_bd_ram) ? 0 : + ((u32 __force)res->start + pdata->ctrl_ram_offset); + priv->dma = cpdma_ctlr_create(&dma_params); if (!priv->dma) { dev_err(emac_dev, "DaVinci EMAC: Error initializing DMA\n"); diff --git a/include/linux/davinci_emac.h b/include/linux/davinci_emac.h index 5dd4285..5428885 100644 --- a/include/linux/davinci_emac.h +++ b/include/linux/davinci_emac.h @@ -36,6 +36,7 @@ struct emac_platform_data { u8 rmii_en; u8 version; + bool no_bd_ram; void (*interrupt_enable) (void); void (*interrupt_disable) (void); };