diff options
Diffstat (limited to 'target/linux/brcm63xx/patches-3.9/419-MIPS-BCM63XX-enable-enet-for-BCM6345.patch')
| -rw-r--r-- | target/linux/brcm63xx/patches-3.9/419-MIPS-BCM63XX-enable-enet-for-BCM6345.patch | 805 |
1 files changed, 805 insertions, 0 deletions
diff --git a/target/linux/brcm63xx/patches-3.9/419-MIPS-BCM63XX-enable-enet-for-BCM6345.patch b/target/linux/brcm63xx/patches-3.9/419-MIPS-BCM63XX-enable-enet-for-BCM6345.patch new file mode 100644 index 000000000..f692aa5af --- /dev/null +++ b/target/linux/brcm63xx/patches-3.9/419-MIPS-BCM63XX-enable-enet-for-BCM6345.patch @@ -0,0 +1,805 @@ +From 1b0b5d325d0cc50cade62afd6a9416fb3cd1e658 Mon Sep 17 00:00:00 2001 +From: Jonas Gorski <jogo@openwrt.org> +Date: Mon, 7 Jan 2013 17:42:45 +0100 +Subject: [PATCH 69/72] 443-MIPS-BCM63XX-enable-enet-for-BCM6345.patch + +--- + arch/mips/bcm63xx/dev-enet.c | 63 ++++++- + arch/mips/include/asm/mach-bcm63xx/bcm63xx_cpu.h | 3 +- + .../include/asm/mach-bcm63xx/bcm63xx_dev_enet.h | 88 +++++++++ + arch/mips/include/asm/mach-bcm63xx/bcm63xx_regs.h | 43 ++++- + drivers/net/ethernet/broadcom/bcm63xx_enet.c | 199 ++++++++++++-------- + drivers/net/ethernet/broadcom/bcm63xx_enet.h | 15 ++ + 6 files changed, 320 insertions(+), 91 deletions(-) + +--- a/arch/mips/bcm63xx/dev-enet.c ++++ b/arch/mips/bcm63xx/dev-enet.c +@@ -9,10 +9,44 @@ + #include <linux/init.h> + #include <linux/kernel.h> + #include <linux/platform_device.h> ++#include <linux/export.h> + #include <bcm63xx_dev_enet.h> + #include <bcm63xx_io.h> + #include <bcm63xx_regs.h> + ++#ifdef BCMCPU_RUNTIME_DETECT ++static const unsigned long bcm6xxx_regs_enetdmac[] = { ++ [ENETDMAC_CHANCFG] = ENETDMAC_CHANCFG_REG, ++ [ENETDMAC_IR] = ENETDMAC_IR_REG, ++ [ENETDMAC_IRMASK] = ENETDMAC_IRMASK_REG, ++ [ENETDMAC_MAXBURST] = ENETDMAC_MAXBURST_REG, ++}; ++ ++static const unsigned long bcm6345_regs_enetdmac[] = { ++ [ENETDMAC_CHANCFG] = ENETDMA_6345_CHANCFG_REG, ++ [ENETDMAC_IR] = ENETDMA_6345_IR_REG, ++ [ENETDMAC_IRMASK] = ENETDMA_6345_IRMASK_REG, ++ [ENETDMAC_MAXBURST] = ENETDMA_6345_MAXBURST_REG, ++ [ENETDMAC_BUFALLOC] = ENETDMA_6345_BUFALLOC_REG, ++ [ENETDMAC_RSTART] = ENETDMA_6345_RSTART_REG, ++ [ENETDMAC_FC] = ENETDMA_6345_FC_REG, ++ [ENETDMAC_LEN] = ENETDMA_6345_LEN_REG, ++}; ++ ++const unsigned long *bcm63xx_regs_enetdmac; ++EXPORT_SYMBOL(bcm63xx_regs_enetdmac); ++ ++static __init void bcm63xx_enetdmac_regs_init(void) ++{ ++ if (BCMCPU_IS_6345()) ++ bcm63xx_regs_enetdmac = bcm6345_regs_enetdmac; ++ else ++ bcm63xx_regs_enetdmac = bcm6xxx_regs_enetdmac; ++} ++#else ++static __init void bcm63xx_enetdmac_regs_init(void) { } ++#endif ++ + static struct resource shared_res[] = { + { + .start = -1, /* filled at runtime */ +@@ -137,12 +171,19 @@ static int __init register_shared(void) + if (shared_device_registered) + return 0; + ++ bcm63xx_enetdmac_regs_init(); ++ + shared_res[0].start = bcm63xx_regset_address(RSET_ENETDMA); + shared_res[0].end = shared_res[0].start; +- shared_res[0].end += (RSET_ENETDMA_SIZE) - 1; ++ if (BCMCPU_IS_6345()) ++ shared_res[0].end += (RSET_6345_ENETDMA_SIZE) - 1; ++ else ++ shared_res[0].end += (RSET_ENETDMA_SIZE) - 1; + + if (BCMCPU_IS_6328() || BCMCPU_IS_6362() || BCMCPU_IS_6368()) + chan_count = 32; ++ else if (BCMCPU_IS_6345()) ++ chan_count = 8; + else + chan_count = 16; + +@@ -172,7 +213,7 @@ int __init bcm63xx_enet_register(int uni + if (unit > 1) + return -ENODEV; + +- if (unit == 1 && BCMCPU_IS_6338()) ++ if (unit == 1 && (BCMCPU_IS_6338() || BCMCPU_IS_6345())) + return -ENODEV; + + ret = register_shared(); +@@ -213,6 +254,20 @@ int __init bcm63xx_enet_register(int uni + dpd->phy_interrupt = bcm63xx_get_irq_number(IRQ_ENET_PHY); + } + ++ dpd->dma_chan_en_mask = ENETDMAC_CHANCFG_EN_MASK; ++ dpd->dma_chan_int_mask = ENETDMAC_IR_PKTDONE_MASK; ++ if (BCMCPU_IS_6345()) { ++ dpd->dma_chan_en_mask |= ENETDMAC_CHANCFG_CHAINING_MASK; ++ dpd->dma_chan_en_mask |= ENETDMAC_CHANCFG_WRAP_EN_MASK; ++ dpd->dma_chan_en_mask |= ENETDMAC_CHANCFG_FLOWC_EN_MASK; ++ dpd->dma_chan_int_mask |= ENETDMA_IR_BUFDONE_MASK; ++ dpd->dma_chan_int_mask |= ENETDMA_IR_NOTOWNER_MASK; ++ dpd->dma_chan_width = ENETDMA_6345_CHAN_WIDTH; ++ dpd->dma_no_sram = 1; ++ dpd->dma_desc_shift = ENETDMA_6345_DESC_SHIFT; ++ } else ++ dpd->dma_chan_width = ENETDMA_CHAN_WIDTH; ++ + ret = platform_device_register(pdev); + if (ret) + return ret; +@@ -246,6 +301,10 @@ bcm63xx_enetsw_register(const struct bcm + else if (BCMCPU_IS_6362() || BCMCPU_IS_6368()) + enetsw_pd.num_ports = ENETSW_PORTS_6368; + ++ enetsw_pd.dma_chan_width = ENETDMA_CHAN_WIDTH; ++ enetsw_pd.dma_chan_en_mask = ENETDMAC_CHANCFG_EN_MASK; ++ enetsw_pd.dma_chan_int_mask = ENETDMAC_IR_PKTDONE_MASK; ++ + ret = platform_device_register(&bcm63xx_enetsw_device); + if (ret) + return ret; +--- a/arch/mips/include/asm/mach-bcm63xx/bcm63xx_cpu.h ++++ b/arch/mips/include/asm/mach-bcm63xx/bcm63xx_cpu.h +@@ -175,6 +175,7 @@ enum bcm63xx_regs_set { + #define BCM_6368_RSET_SPI_SIZE 1804 + #define RSET_ENET_SIZE 2048 + #define RSET_ENETDMA_SIZE 256 ++#define RSET_6345_ENETDMA_SIZE 64 + #define RSET_ENETDMAC_SIZE(chans) (16 * (chans)) + #define RSET_ENETDMAS_SIZE(chans) (16 * (chans)) + #define RSET_ENETSW_SIZE 65536 +@@ -305,7 +306,7 @@ enum bcm63xx_regs_set { + #define BCM_6345_USBDMA_BASE (0xfffe2800) + #define BCM_6345_ENET0_BASE (0xfffe1800) + #define BCM_6345_ENETDMA_BASE (0xfffe2800) +-#define BCM_6345_ENETDMAC_BASE (0xfffe2900) ++#define BCM_6345_ENETDMAC_BASE (0xfffe2840) + #define BCM_6345_ENETDMAS_BASE (0xfffe2a00) + #define BCM_6345_ENETSW_BASE (0xdeadbeef) + #define BCM_6345_PCMCIA_BASE (0xfffe2028) +--- a/arch/mips/include/asm/mach-bcm63xx/bcm63xx_dev_enet.h ++++ b/arch/mips/include/asm/mach-bcm63xx/bcm63xx_dev_enet.h +@@ -4,6 +4,8 @@ + #include <linux/if_ether.h> + #include <linux/init.h> + ++#include <bcm63xx_regs.h> ++ + /* + * on board ethernet platform data + */ +@@ -37,6 +39,21 @@ struct bcm63xx_enet_platform_data { + int phy_id, int reg), + void (*mii_write)(struct net_device *dev, + int phy_id, int reg, int val)); ++ ++ /* DMA channel enable mask */ ++ u32 dma_chan_en_mask; ++ ++ /* DMA channel interrupt mask */ ++ u32 dma_chan_int_mask; ++ ++ /* Set to one if DMA engine has *no* SRAM */ ++ unsigned int dma_no_sram; ++ ++ /* DMA channel register width */ ++ unsigned int dma_chan_width; ++ ++ /* DMA descriptor shift */ ++ unsigned int dma_desc_shift; + }; + + /* +@@ -63,6 +80,15 @@ struct bcm63xx_enetsw_platform_data { + char mac_addr[ETH_ALEN]; + int num_ports; + struct bcm63xx_enetsw_port used_ports[ENETSW_MAX_PORT]; ++ ++ /* DMA channel enable mask */ ++ u32 dma_chan_en_mask; ++ ++ /* DMA channel interrupt mask */ ++ u32 dma_chan_int_mask; ++ ++ /* DMA channel register width */ ++ unsigned int dma_chan_width; + }; + + int __init bcm63xx_enet_register(int unit, +@@ -70,4 +96,69 @@ int __init bcm63xx_enet_register(int uni + + int bcm63xx_enetsw_register(const struct bcm63xx_enetsw_platform_data *pd); + ++enum bcm63xx_regs_enetdmac { ++ ENETDMAC_CHANCFG, ++ ENETDMAC_IR, ++ ENETDMAC_IRMASK, ++ ENETDMAC_MAXBURST, ++ ENETDMAC_BUFALLOC, ++ ENETDMAC_RSTART, ++ ENETDMAC_FC, ++ ENETDMAC_LEN, ++}; ++ ++static inline unsigned long bcm63xx_enetdmacreg(enum bcm63xx_regs_enetdmac reg) ++{ ++#ifdef BCMCPU_RUNTIME_DETECT ++ extern const unsigned long *bcm63xx_regs_enetdmac; ++ ++ return bcm63xx_regs_enetdmac[reg]; ++#else ++#ifdef CONFIG_BCM63XX_CPU_6345 ++ switch (reg) { ++ case ENETDMAC_CHANCFG: ++ return ENETDMA_6345_CHANCFG_REG; ++ case ENETDMAC_IR: ++ return ENETDMA_6345_IR_REG; ++ case ENETDMAC_IRMASK: ++ return ENETDMA_6345_IRMASK_REG; ++ case ENETDMAC_MAXBURST: ++ return ENETDMA_6345_MAXBURST_REG; ++ case ENETDMAC_BUFALLOC: ++ return ENETDMA_6345_BUFALLOC_REG; ++ case ENETDMAC_RSTART: ++ return ENETDMA_6345_RSTART_REG; ++ case ENETDMAC_FC: ++ return ENETDMA_6345_FC_REG; ++ case ENETDMAC_LEN: ++ return ENETDMA_6345_LEN_REG; ++ } ++#endif ++#if defined(CONFIG_BCM63XX_CPU_6328) || \ ++ defined(CONFIG_BCM63XX_CPU_6338) || ++ defined(CONFIG_BCM63XX_CPU_6348) || \ ++ defined(CONFIG_BCM63XX_CPU_6358) || \ ++ defined(CONFIG_BCM63XX_CPU_6362) || \ ++ defined(CONFIG_BCM63XX_CPU_6368) ++ switch (reg) { ++ case ENETDMAC_CHANCFG: ++ return ENETDMAC_CHANCFG_REG; ++ case ENETDMAC_IR: ++ return ENETDMAC_IR_REG; ++ case ENETDMAC_IRMASK: ++ return ENETDMAC_IRMASK_REG; ++ case ENETDMAC_MAXBURST: ++ return ENETDMAC_MAXBURST_REG; ++ case ENETDMAC_BUFALLOC: ++ case ENETDMAC_RSTART: ++ case ENETDMAC_FC: ++ case ENETDMAC_LEN: ++ return 0; ++ } ++#endif ++#endif ++ return 0; ++} ++ ++ + #endif /* ! BCM63XX_DEV_ENET_H_ */ +--- a/arch/mips/include/asm/mach-bcm63xx/bcm63xx_regs.h ++++ b/arch/mips/include/asm/mach-bcm63xx/bcm63xx_regs.h +@@ -730,6 +730,8 @@ + /************************************************************************* + * _REG relative to RSET_ENETDMA + *************************************************************************/ ++#define ENETDMA_CHAN_WIDTH 0x10 ++#define ENETDMA_6345_CHAN_WIDTH 0x40 + + /* Controller Configuration Register */ + #define ENETDMA_CFG_REG (0x0) +@@ -785,31 +787,56 @@ + /* State Ram Word 4 */ + #define ENETDMA_SRAM4_REG(x) (0x20c + (x) * 0x10) + ++/* Broadcom 6345 ENET DMA definitions */ ++#define ENETDMA_6345_CHANCFG_REG (0x00) ++ ++#define ENETDMA_6345_MAXBURST_REG (0x40) ++ ++#define ENETDMA_6345_RSTART_REG (0x08) ++ ++#define ENETDMA_6345_LEN_REG (0x0C) ++ ++#define ENETDMA_6345_IR_REG (0x14) ++ ++#define ENETDMA_6345_IRMASK_REG (0x18) ++ ++#define ENETDMA_6345_FC_REG (0x1C) ++ ++#define ENETDMA_6345_BUFALLOC_REG (0x20) ++ ++/* Shift down for EOP, SOP and WRAP bits */ ++#define ENETDMA_6345_DESC_SHIFT (3) + + /************************************************************************* + * _REG relative to RSET_ENETDMAC + *************************************************************************/ + + /* Channel Configuration register */ +-#define ENETDMAC_CHANCFG_REG(x) ((x) * 0x10) ++#define ENETDMAC_CHANCFG_REG (0x0) + #define ENETDMAC_CHANCFG_EN_SHIFT 0 + #define ENETDMAC_CHANCFG_EN_MASK (1 << ENETDMAC_CHANCFG_EN_SHIFT) + #define ENETDMAC_CHANCFG_PKTHALT_SHIFT 1 + #define ENETDMAC_CHANCFG_PKTHALT_MASK (1 << ENETDMAC_CHANCFG_PKTHALT_SHIFT) + #define ENETDMAC_CHANCFG_BUFHALT_SHIFT 2 + #define ENETDMAC_CHANCFG_BUFHALT_MASK (1 << ENETDMAC_CHANCFG_BUFHALT_SHIFT) ++#define ENETDMAC_CHANCFG_CHAINING_SHIFT 2 ++#define ENETDMAC_CHANCFG_CHAINING_MASK (1 << ENETDMAC_CHANCFG_CHAINING_SHIFT) ++#define ENETDMAC_CHANCFG_WRAP_EN_SHIFT 3 ++#define ENETDMAC_CHANCFG_WRAP_EN_MASK (1 << ENETDMAC_CHANCFG_WRAP_EN_SHIFT) ++#define ENETDMAC_CHANCFG_FLOWC_EN_SHIFT 4 ++#define ENETDMAC_CHANCFG_FLOWC_EN_MASK (1 << ENETDMAC_CHANCFG_FLOWC_EN_SHIFT) + + /* Interrupt Control/Status register */ +-#define ENETDMAC_IR_REG(x) (0x4 + (x) * 0x10) ++#define ENETDMAC_IR_REG (0x4) + #define ENETDMAC_IR_BUFDONE_MASK (1 << 0) + #define ENETDMAC_IR_PKTDONE_MASK (1 << 1) + #define ENETDMAC_IR_NOTOWNER_MASK (1 << 2) + + /* Interrupt Mask register */ +-#define ENETDMAC_IRMASK_REG(x) (0x8 + (x) * 0x10) ++#define ENETDMAC_IRMASK_REG (0x8) + + /* Maximum Burst Length */ +-#define ENETDMAC_MAXBURST_REG(x) (0xc + (x) * 0x10) ++#define ENETDMAC_MAXBURST_REG (0xc) + + + /************************************************************************* +@@ -817,16 +844,16 @@ + *************************************************************************/ + + /* Ring Start Address register */ +-#define ENETDMAS_RSTART_REG(x) ((x) * 0x10) ++#define ENETDMAS_RSTART_REG (0x0) + + /* State Ram Word 2 */ +-#define ENETDMAS_SRAM2_REG(x) (0x4 + (x) * 0x10) ++#define ENETDMAS_SRAM2_REG (0x4) + + /* State Ram Word 3 */ +-#define ENETDMAS_SRAM3_REG(x) (0x8 + (x) * 0x10) ++#define ENETDMAS_SRAM3_REG (0x8) + + /* State Ram Word 4 */ +-#define ENETDMAS_SRAM4_REG(x) (0xc + (x) * 0x10) ++#define ENETDMAS_SRAM4_REG (0xc) + + + /************************************************************************* +--- a/drivers/net/ethernet/broadcom/bcm63xx_enet.c ++++ b/drivers/net/ethernet/broadcom/bcm63xx_enet.c +@@ -115,26 +115,28 @@ static inline void enet_dma_writel(struc + bcm_writel(val, bcm_enet_shared_base[0] + off); + } + +-static inline u32 enet_dmac_readl(struct bcm_enet_priv *priv, u32 off) ++static inline u32 enet_dmac_readl(struct bcm_enet_priv *priv, u32 off, int chan) + { +- return bcm_readl(bcm_enet_shared_base[1] + off); ++ return bcm_readl(bcm_enet_shared_base[1] + ++ (bcm63xx_enetdmacreg(off) + (chan * priv->dma_chan_width))); + } + + static inline void enet_dmac_writel(struct bcm_enet_priv *priv, +- u32 val, u32 off) ++ u32 val, u32 off, int chan) + { +- bcm_writel(val, bcm_enet_shared_base[1] + off); ++ bcm_writel(val, bcm_enet_shared_base[1] + ++ (bcm63xx_enetdmacreg(off) + (chan * priv->dma_chan_width))); + } + +-static inline u32 enet_dmas_readl(struct bcm_enet_priv *priv, u32 off) ++static inline u32 enet_dmas_readl(struct bcm_enet_priv *priv, u32 off, int chan) + { +- return bcm_readl(bcm_enet_shared_base[2] + off); ++ return bcm_readl(bcm_enet_shared_base[2] + (off + (chan * priv->dma_chan_width))); + } + + static inline void enet_dmas_writel(struct bcm_enet_priv *priv, +- u32 val, u32 off) ++ u32 val, u32 off, int chan) + { +- bcm_writel(val, bcm_enet_shared_base[2] + off); ++ bcm_writel(val, bcm_enet_shared_base[2] + (off + (chan * priv->dma_chan_width))); + } + + /* +@@ -270,7 +272,7 @@ static int bcm_enet_refill_rx(struct net + len_stat = priv->rx_skb_size << DMADESC_LENGTH_SHIFT; + len_stat |= DMADESC_OWNER_MASK; + if (priv->rx_dirty_desc == priv->rx_ring_size - 1) { +- len_stat |= DMADESC_WRAP_MASK; ++ len_stat |= (DMADESC_WRAP_MASK >> priv->dma_desc_shift); + priv->rx_dirty_desc = 0; + } else { + priv->rx_dirty_desc++; +@@ -281,7 +283,10 @@ static int bcm_enet_refill_rx(struct net + priv->rx_desc_count++; + + /* tell dma engine we allocated one buffer */ +- enet_dma_writel(priv, 1, ENETDMA_BUFALLOC_REG(priv->rx_chan)); ++ if (!priv->dma_no_sram) ++ enet_dma_writel(priv, 1, ENETDMA_BUFALLOC_REG(priv->rx_chan)); ++ else ++ enet_dmac_writel(priv, 1, ENETDMAC_BUFALLOC, priv->rx_chan); + } + + /* If rx ring is still empty, set a timer to try allocating +@@ -357,7 +362,8 @@ static int bcm_enet_receive_queue(struct + + /* if the packet does not have start of packet _and_ + * end of packet flag set, then just recycle it */ +- if ((len_stat & DMADESC_ESOP_MASK) != DMADESC_ESOP_MASK) { ++ if ((len_stat & (DMADESC_ESOP_MASK >> priv->dma_desc_shift)) != ++ (DMADESC_ESOP_MASK >> priv->dma_desc_shift)) { + dev->stats.rx_dropped++; + continue; + } +@@ -418,8 +424,8 @@ static int bcm_enet_receive_queue(struct + bcm_enet_refill_rx(dev); + + /* kick rx dma */ +- enet_dmac_writel(priv, ENETDMAC_CHANCFG_EN_MASK, +- ENETDMAC_CHANCFG_REG(priv->rx_chan)); ++ enet_dmac_writel(priv, priv->dma_chan_en_mask, ++ ENETDMAC_CHANCFG, priv->rx_chan); + } + + return processed; +@@ -494,10 +500,10 @@ static int bcm_enet_poll(struct napi_str + dev = priv->net_dev; + + /* ack interrupts */ +- enet_dmac_writel(priv, ENETDMAC_IR_PKTDONE_MASK, +- ENETDMAC_IR_REG(priv->rx_chan)); +- enet_dmac_writel(priv, ENETDMAC_IR_PKTDONE_MASK, +- ENETDMAC_IR_REG(priv->tx_chan)); ++ enet_dmac_writel(priv, priv->dma_chan_int_mask, ++ ENETDMAC_IR, priv->rx_chan); ++ enet_dmac_writel(priv, priv->dma_chan_int_mask, ++ ENETDMAC_IR, priv->tx_chan); + + /* reclaim sent skb */ + tx_work_done = bcm_enet_tx_reclaim(dev, 0); +@@ -516,10 +522,10 @@ static int bcm_enet_poll(struct napi_str + napi_complete(napi); + + /* restore rx/tx interrupt */ +- enet_dmac_writel(priv, ENETDMAC_IR_PKTDONE_MASK, +- ENETDMAC_IRMASK_REG(priv->rx_chan)); +- enet_dmac_writel(priv, ENETDMAC_IR_PKTDONE_MASK, +- ENETDMAC_IRMASK_REG(priv->tx_chan)); ++ enet_dmac_writel(priv, priv->dma_chan_int_mask, ++ ENETDMAC_IRMASK, priv->rx_chan); ++ enet_dmac_writel(priv, priv->dma_chan_int_mask, ++ ENETDMAC_IRMASK, priv->tx_chan); + + return rx_work_done; + } +@@ -562,8 +568,8 @@ static irqreturn_t bcm_enet_isr_dma(int + priv = netdev_priv(dev); + + /* mask rx/tx interrupts */ +- enet_dmac_writel(priv, 0, ENETDMAC_IRMASK_REG(priv->rx_chan)); +- enet_dmac_writel(priv, 0, ENETDMAC_IRMASK_REG(priv->tx_chan)); ++ enet_dmac_writel(priv, 0, ENETDMAC_IRMASK, priv->rx_chan); ++ enet_dmac_writel(priv, 0, ENETDMAC_IRMASK, priv->tx_chan); + + napi_schedule(&priv->napi); + +@@ -624,14 +630,14 @@ static int bcm_enet_start_xmit(struct sk + DMA_TO_DEVICE); + + len_stat = (skb->len << DMADESC_LENGTH_SHIFT) & DMADESC_LENGTH_MASK; +- len_stat |= DMADESC_ESOP_MASK | ++ len_stat |= (DMADESC_ESOP_MASK >> priv->dma_desc_shift) | + DMADESC_APPEND_CRC | + DMADESC_OWNER_MASK; + + priv->tx_curr_desc++; + if (priv->tx_curr_desc == priv->tx_ring_size) { + priv->tx_curr_desc = 0; +- len_stat |= DMADESC_WRAP_MASK; ++ len_stat |= (DMADESC_WRAP_MASK >> priv->dma_desc_shift); + } + priv->tx_desc_count--; + +@@ -642,8 +648,8 @@ static int bcm_enet_start_xmit(struct sk + wmb(); + + /* kick tx dma */ +- enet_dmac_writel(priv, ENETDMAC_CHANCFG_EN_MASK, +- ENETDMAC_CHANCFG_REG(priv->tx_chan)); ++ enet_dmac_writel(priv, priv->dma_chan_en_mask, ++ ENETDMAC_CHANCFG, priv->tx_chan); + + /* stop queue if no more desc available */ + if (!priv->tx_desc_count) +@@ -771,6 +777,9 @@ static void bcm_enet_set_flow(struct bcm + val &= ~ENET_RXCFG_ENFLOW_MASK; + enet_writel(priv, val, ENET_RXCFG_REG); + ++ if (priv->dma_no_sram) ++ return; ++ + /* tx flow control (pause frame generation) */ + val = enet_dma_readl(priv, ENETDMA_CFG_REG); + if (tx_en) +@@ -886,8 +895,8 @@ static int bcm_enet_open(struct net_devi + + /* mask all interrupts and request them */ + enet_writel(priv, 0, ENET_IRMASK_REG); +- enet_dmac_writel(priv, 0, ENETDMAC_IRMASK_REG(priv->rx_chan)); +- enet_dmac_writel(priv, 0, ENETDMAC_IRMASK_REG(priv->tx_chan)); ++ enet_dmac_writel(priv, 0, ENETDMAC_IRMASK, priv->rx_chan); ++ enet_dmac_writel(priv, 0, ENETDMAC_IRMASK, priv->tx_chan); + + ret = request_irq(dev->irq, bcm_enet_isr_mac, 0, dev->name, dev); + if (ret) +@@ -964,8 +973,12 @@ static int bcm_enet_open(struct net_devi + priv->rx_curr_desc = 0; + + /* initialize flow control buffer allocation */ +- enet_dma_writel(priv, ENETDMA_BUFALLOC_FORCE_MASK | 0, +- ENETDMA_BUFALLOC_REG(priv->rx_chan)); ++ if (!priv->dma_no_sram) ++ enet_dma_writel(priv, ENETDMA_BUFALLOC_FORCE_MASK | 0, ++ ENETDMA_BUFALLOC_REG(priv->rx_chan)); ++ else ++ enet_dmac_writel(priv, ENETDMA_BUFALLOC_FORCE_MASK | 0, ++ ENETDMAC_BUFALLOC, priv->rx_chan); + + if (bcm_enet_refill_rx(dev)) { + dev_err(kdev, "cannot allocate rx skb queue\n"); +@@ -974,18 +987,30 @@ static int bcm_enet_open(struct net_devi + } + + /* write rx & tx ring addresses */ +- enet_dmas_writel(priv, priv->rx_desc_dma, +- ENETDMAS_RSTART_REG(priv->rx_chan)); +- enet_dmas_writel(priv, priv->tx_desc_dma, +- ENETDMAS_RSTART_REG(priv->tx_chan)); ++ if (!priv->dma_no_sram) { ++ enet_dmas_writel(priv, priv->rx_desc_dma, ++ ENETDMAS_RSTART_REG, priv->rx_chan); ++ enet_dmas_writel(priv, priv->tx_desc_dma, ++ ENETDMAS_RSTART_REG, priv->tx_chan); ++ } else { ++ enet_dmac_writel(priv, priv->rx_desc_dma, ++ ENETDMAC_RSTART, priv->rx_chan); ++ enet_dmac_writel(priv, priv->tx_desc_dma, ++ ENETDMAC_RSTART, priv->tx_chan); ++ } + + /* clear remaining state ram for rx & tx channel */ +- enet_dmas_writel(priv, 0, ENETDMAS_SRAM2_REG(priv->rx_chan)); +- enet_dmas_writel(priv, 0, ENETDMAS_SRAM2_REG(priv->tx_chan)); +- enet_dmas_writel(priv, 0, ENETDMAS_SRAM3_REG(priv->rx_chan)); +- enet_dmas_writel(priv, 0, ENETDMAS_SRAM3_REG(priv->tx_chan)); +- enet_dmas_writel(priv, 0, ENETDMAS_SRAM4_REG(priv->rx_chan)); +- enet_dmas_writel(priv, 0, ENETDMAS_SRAM4_REG(priv->tx_chan)); ++ if (!priv->dma_no_sram) { ++ enet_dmas_writel(priv, 0, ENETDMAS_SRAM2_REG, priv->rx_chan); ++ enet_dmas_writel(priv, 0, ENETDMAS_SRAM2_REG, priv->tx_chan); ++ enet_dmas_writel(priv, 0, ENETDMAS_SRAM3_REG, priv->rx_chan); ++ enet_dmas_writel(priv, 0, ENETDMAS_SRAM3_REG, priv->tx_chan); ++ enet_dmas_writel(priv, 0, ENETDMAS_SRAM4_REG, priv->rx_chan); ++ enet_dmas_writel(priv, 0, ENETDMAS_SRAM4_REG, priv->tx_chan); ++ } else { ++ enet_dmac_writel(priv, 0, ENETDMAC_FC, priv->rx_chan); ++ enet_dmac_writel(priv, 0, ENETDMAC_FC, priv->tx_chan); ++ } + + /* set max rx/tx length */ + enet_writel(priv, priv->hw_mtu, ENET_RXMAXLEN_REG); +@@ -993,18 +1018,24 @@ static int bcm_enet_open(struct net_devi + + /* set dma maximum burst len */ + enet_dmac_writel(priv, priv->dma_maxburst, +- ENETDMAC_MAXBURST_REG(priv->rx_chan)); ++ ENETDMAC_MAXBURST, priv->rx_chan); + enet_dmac_writel(priv, priv->dma_maxburst, +- ENETDMAC_MAXBURST_REG(priv->tx_chan)); ++ ENETDMAC_MAXBURST, priv->tx_chan); + + /* set correct transmit fifo watermark */ + enet_writel(priv, BCMENET_TX_FIFO_TRESH, ENET_TXWMARK_REG); + + /* set flow control low/high threshold to 1/3 / 2/3 */ +- val = priv->rx_ring_size / 3; +- enet_dma_writel(priv, val, ENETDMA_FLOWCL_REG(priv->rx_chan)); +- val = (priv->rx_ring_size * 2) / 3; +- enet_dma_writel(priv, val, ENETDMA_FLOWCH_REG(priv->rx_chan)); ++ if (!priv->dma_no_sram) { ++ val = priv->rx_ring_size / 3; ++ enet_dma_writel(priv, val, ENETDMA_FLOWCL_REG(priv->rx_chan)); ++ val = (priv->rx_ring_size * 2) / 3; ++ enet_dma_writel(priv, val, ENETDMA_FLOWCH_REG(priv->rx_chan)); ++ } else { ++ enet_dmac_writel(priv, 5, ENETDMAC_FC, priv->rx_chan); ++ enet_dmac_writel(priv, priv->rx_ring_size, ENETDMAC_LEN, priv->rx_chan); ++ enet_dmac_writel(priv, priv->tx_ring_size, ENETDMAC_LEN, priv->tx_chan); ++ } + + /* all set, enable mac and interrupts, start dma engine and + * kick rx dma channel */ +@@ -1013,26 +1044,26 @@ static int bcm_enet_open(struct net_devi + val |= ENET_CTL_ENABLE_MASK; + enet_writel(priv, val, ENET_CTL_REG); + enet_dma_writel(priv, ENETDMA_CFG_EN_MASK, ENETDMA_CFG_REG); +- enet_dmac_writel(priv, ENETDMAC_CHANCFG_EN_MASK, +- ENETDMAC_CHANCFG_REG(priv->rx_chan)); ++ enet_dmac_writel(priv, priv->dma_chan_en_mask, ++ ENETDMAC_CHANCFG, priv->rx_chan); + + /* watch "mib counters about to overflow" interrupt */ + enet_writel(priv, ENET_IR_MIB, ENET_IR_REG); + enet_writel(priv, ENET_IR_MIB, ENET_IRMASK_REG); + + /* watch "packet transferred" interrupt in rx and tx */ +- enet_dmac_writel(priv, ENETDMAC_IR_PKTDONE_MASK, +- ENETDMAC_IR_REG(priv->rx_chan)); +- enet_dmac_writel(priv, ENETDMAC_IR_PKTDONE_MASK, +- ENETDMAC_IR_REG(priv->tx_chan)); ++ enet_dmac_writel(priv, priv->dma_chan_int_mask, ++ ENETDMAC_IR, priv->rx_chan); ++ enet_dmac_writel(priv, priv->dma_chan_int_mask, ++ ENETDMAC_IR, priv->tx_chan); + + /* make sure we enable napi before rx interrupt */ + napi_enable(&priv->napi); + +- enet_dmac_writel(priv, ENETDMAC_IR_PKTDONE_MASK, +- ENETDMAC_IRMASK_REG(priv->rx_chan)); +- enet_dmac_writel(priv, ENETDMAC_IR_PKTDONE_MASK, +- ENETDMAC_IRMASK_REG(priv->tx_chan)); ++ enet_dmac_writel(priv, priv->dma_chan_int_mask, ++ ENETDMAC_IRMASK, priv->rx_chan); ++ enet_dmac_writel(priv, priv->dma_chan_int_mask, ++ ENETDMAC_IRMASK, priv->tx_chan); + + if (priv->has_phy) + phy_start(priv->phydev); +@@ -1109,13 +1140,13 @@ static void bcm_enet_disable_dma(struct + { + int limit; + +- enet_dmac_writel(priv, 0, ENETDMAC_CHANCFG_REG(chan)); ++ enet_dmac_writel(priv, 0, ENETDMAC_CHANCFG, chan); + + limit = 1000; + do { + u32 val; + +- val = enet_dmac_readl(priv, ENETDMAC_CHANCFG_REG(chan)); ++ val = enet_dmac_readl(priv, ENETDMAC_CHANCFG, chan); + if (!(val & ENETDMAC_CHANCFG_EN_MASK)) + break; + udelay(1); +@@ -1142,8 +1173,8 @@ static int bcm_enet_stop(struct net_devi + + /* mask all interrupts */ + enet_writel(priv, 0, ENET_IRMASK_REG); +- enet_dmac_writel(priv, 0, ENETDMAC_IRMASK_REG(priv->rx_chan)); +- enet_dmac_writel(priv, 0, ENETDMAC_IRMASK_REG(priv->tx_chan)); ++ enet_dmac_writel(priv, 0, ENETDMAC_IRMASK, priv->rx_chan); ++ enet_dmac_writel(priv, 0, ENETDMAC_IRMASK, priv->tx_chan); + + /* make sure no mib update is scheduled */ + cancel_work_sync(&priv->mib_update_task); +@@ -1751,6 +1782,11 @@ static int bcm_enet_probe(struct platfor + priv->pause_tx = pd->pause_tx; + priv->force_duplex_full = pd->force_duplex_full; + priv->force_speed_100 = pd->force_speed_100; ++ priv->dma_chan_en_mask = pd->dma_chan_en_mask; ++ priv->dma_chan_int_mask = pd->dma_chan_int_mask; ++ priv->dma_chan_width = pd->dma_chan_width; ++ priv->dma_no_sram = pd->dma_no_sram; ++ priv->dma_desc_shift = pd->dma_desc_shift; + } + + if (priv->mac_id == 0 && priv->has_phy && !priv->use_external_mii) { +@@ -2122,8 +2158,8 @@ static int bcm_enetsw_open(struct net_de + kdev = &priv->pdev->dev; + + /* mask all interrupts and request them */ +- enet_dmac_writel(priv, 0, ENETDMAC_IRMASK_REG(priv->rx_chan)); +- enet_dmac_writel(priv, 0, ENETDMAC_IRMASK_REG(priv->tx_chan)); ++ enet_dmac_writel(priv, 0, ENETDMAC_IRMASK, priv->rx_chan); ++ enet_dmac_writel(priv, 0, ENETDMAC_IRMASK, priv->tx_chan); + + ret = request_irq(priv->irq_rx, bcm_enet_isr_dma, + IRQF_DISABLED, dev->name, dev); +@@ -2247,23 +2283,23 @@ static int bcm_enetsw_open(struct net_de + + /* write rx & tx ring addresses */ + enet_dmas_writel(priv, priv->rx_desc_dma, +- ENETDMAS_RSTART_REG(priv->rx_chan)); ++ ENETDMAS_RSTART_REG, priv->rx_chan); + enet_dmas_writel(priv, priv->tx_desc_dma, +- ENETDMAS_RSTART_REG(priv->tx_chan)); ++ ENETDMAS_RSTART_REG, priv->tx_chan); + + /* clear remaining state ram for rx & tx channel */ +- enet_dmas_writel(priv, 0, ENETDMAS_SRAM2_REG(priv->rx_chan)); +- enet_dmas_writel(priv, 0, ENETDMAS_SRAM2_REG(priv->tx_chan)); +- enet_dmas_writel(priv, 0, ENETDMAS_SRAM3_REG(priv->rx_chan)); +- enet_dmas_writel(priv, 0, ENETDMAS_SRAM3_REG(priv->tx_chan)); +- enet_dmas_writel(priv, 0, ENETDMAS_SRAM4_REG(priv->rx_chan)); +- enet_dmas_writel(priv, 0, ENETDMAS_SRAM4_REG(priv->tx_chan)); ++ enet_dmas_writel(priv, 0, ENETDMAS_SRAM2_REG, priv->rx_chan); ++ enet_dmas_writel(priv, 0, ENETDMAS_SRAM2_REG, priv->tx_chan); ++ enet_dmas_writel(priv, 0, ENETDMAS_SRAM3_REG, priv->rx_chan); ++ enet_dmas_writel(priv, 0, ENETDMAS_SRAM3_REG, priv->tx_chan); ++ enet_dmas_writel(priv, 0, ENETDMAS_SRAM4_REG, priv->rx_chan); ++ enet_dmas_writel(priv, 0, ENETDMAS_SRAM4_REG, priv->tx_chan); + + /* set dma maximum burst len */ + enet_dmac_writel(priv, priv->dma_maxburst, +- ENETDMAC_MAXBURST_REG(priv->rx_chan)); ++ ENETDMAC_MAXBURST, priv->rx_chan); + enet_dmac_writel(priv, priv->dma_maxburst, +- ENETDMAC_MAXBURST_REG(priv->tx_chan)); ++ ENETDMAC_MAXBURST, priv->tx_chan); + + /* set flow control low/high threshold to 1/3 / 2/3 */ + val = priv->rx_ring_size / 3; +@@ -2276,21 +2312,21 @@ static int bcm_enetsw_open(struct net_de + wmb(); + enet_dma_writel(priv, ENETDMA_CFG_EN_MASK, ENETDMA_CFG_REG); + enet_dmac_writel(priv, ENETDMAC_CHANCFG_EN_MASK, +- ENETDMAC_CHANCFG_REG(priv->rx_chan)); ++ ENETDMAC_CHANCFG, priv->rx_chan); + + /* watch "packet transferred" interrupt in rx and tx */ + enet_dmac_writel(priv, ENETDMAC_IR_PKTDONE_MASK, +- ENETDMAC_IR_REG(priv->rx_chan)); ++ ENETDMAC_IR, priv->rx_chan); + enet_dmac_writel(priv, ENETDMAC_IR_PKTDONE_MASK, +- ENETDMAC_IR_REG(priv->tx_chan)); ++ ENETDMAC_IR, priv->tx_chan); + + /* make sure we enable napi before rx interrupt */ + napi_enable(&priv->napi); + + enet_dmac_writel(priv, ENETDMAC_IR_PKTDONE_MASK, +- ENETDMAC_IRMASK_REG(priv->rx_chan)); ++ ENETDMAC_IRMASK, priv->rx_chan); + enet_dmac_writel(priv, ENETDMAC_IR_PKTDONE_MASK, +- ENETDMAC_IRMASK_REG(priv->tx_chan)); ++ ENETDMAC_IRMASK, priv->tx_chan); + + netif_carrier_on(dev); + netif_start_queue(dev); +@@ -2396,8 +2432,8 @@ static int bcm_enetsw_stop(struct net_de + del_timer_sync(&priv->rx_timeout); + + /* mask all interrupts */ +- enet_dmac_writel(priv, 0, ENETDMAC_IRMASK_REG(priv->rx_chan)); +- enet_dmac_writel(priv, 0, ENETDMAC_IRMASK_REG(priv->tx_chan)); ++ enet_dmac_writel(priv, 0, ENETDMAC_IRMASK, priv->rx_chan); ++ enet_dmac_writel(priv, 0, ENETDMAC_IRMASK, priv->tx_chan); + + /* disable dma & mac */ + bcm_enet_disable_dma(priv, priv->tx_chan); +@@ -2735,6 +2771,9 @@ static int bcm_enetsw_probe(struct platf + memcpy(priv->used_ports, pd->used_ports, + sizeof (pd->used_ports)); + priv->num_ports = pd->num_ports; ++ priv->dma_chan_en_mask = pd->dma_chan_en_mask; ++ priv->dma_chan_int_mask = pd->dma_chan_int_mask; ++ priv->dma_chan_width = pd->dma_chan_width; + } + + ret = compute_hw_mtu(priv, dev->mtu); +--- a/drivers/net/ethernet/broadcom/bcm63xx_enet.h ++++ b/drivers/net/ethernet/broadcom/bcm63xx_enet.h +@@ -339,6 +339,21 @@ struct bcm_enet_priv { + /* used to poll switch port state */ + struct timer_list swphy_poll; + spinlock_t enetsw_mdio_lock; ++ ++ /* dma channel enable mask */ ++ u32 dma_chan_en_mask; ++ ++ /* dma channel interrupt mask */ ++ u32 dma_chan_int_mask; ++ ++ /* dma engine has *no* internal SRAM */ ++ unsigned int dma_no_sram; ++ ++ /* dma channel width */ ++ unsigned int dma_chan_width; ++ ++ /* dma descriptor shift value */ ++ unsigned int dma_desc_shift; + }; + + static inline int bcm_enet_port_is_rgmii(int portid) |