From: Vipul Kumar Date: Wed, 11 Jul 2018 06:13:19 +0000 (+0530) Subject: net: zynq_gem: Added 64-bit addressing support X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=72bdc16c84b331713e94aa2e7b98901f1f3f6265;p=thirdparty%2Fu-boot.git net: zynq_gem: Added 64-bit addressing support This patch added 64-bit addressing support for zynq gem. Signed-off-by: Vipul Kumar Signed-off-by: Siva Durga Prasad Paladugu Signed-off-by: Michal Simek --- diff --git a/drivers/net/zynq_gem.c b/drivers/net/zynq_gem.c index 002ea79dd8a..1bcb6f08d54 100644 --- a/drivers/net/zynq_gem.c +++ b/drivers/net/zynq_gem.c @@ -87,10 +87,17 @@ DECLARE_GLOBAL_DATA_PTR; /* Set with binary 00011000 to use 1536 byte(1*max length frame/buffer) */ #define ZYNQ_GEM_DMACR_RXBUF 0x00180000 +#if defined(CONFIG_PHYS_64BIT) +# define ZYNQ_GEM_DMA_BUS_WIDTH BIT(30) /* 64 bit bus */ +#else +# define ZYNQ_GEM_DMA_BUS_WIDTH (0 << 30) /* 32 bit bus */ +#endif + #define ZYNQ_GEM_DMACR_INIT (ZYNQ_GEM_DMACR_BLENGTH | \ ZYNQ_GEM_DMACR_RXSIZE | \ ZYNQ_GEM_DMACR_TXSIZE | \ - ZYNQ_GEM_DMACR_RXBUF) + ZYNQ_GEM_DMACR_RXBUF | \ + ZYNQ_GEM_DMA_BUS_WIDTH) #define ZYNQ_GEM_TSR_DONE 0x00000020 /* Tx done mask */ @@ -148,12 +155,20 @@ struct zynq_gem_regs { u32 transmit_q1_ptr; /* 0x440 - Transmit priority queue 1 */ u32 reserved8[15]; u32 receive_q1_ptr; /* 0x480 - Receive priority queue 1 */ + u32 reserved10[17]; + u32 upper_txqbase; /* 0x4C8 - Upper tx_q base addr */ + u32 reserved11[2]; + u32 upper_rxqbase; /* 0x4D4 - Upper rx_q base addr */ }; /* BD descriptors */ struct emac_bd { u32 addr; /* Next descriptor pointer */ u32 status; +#if defined(CONFIG_PHYS_64BIT) + u32 addr_hi; + u32 reserved; +#endif }; #define RX_BUF 32 @@ -393,13 +408,21 @@ static int zynq_gem_init(struct udevice *dev) for (i = 0; i < RX_BUF; i++) { priv->rx_bd[i].status = 0xF0000000; priv->rx_bd[i].addr = - ((ulong)(priv->rxbuffers) + - (i * PKTSIZE_ALIGN)); - } + (lower_32_bits((ulong)(priv->rxbuffers) + + (i * PKTSIZE_ALIGN))); +#if defined(CONFIG_PHYS_64BIT) + priv->rx_bd[i].addr_hi = + (upper_32_bits((ulong)(priv->rxbuffers) + + (i * PKTSIZE_ALIGN))); +#endif + } /* WRAP bit to last BD */ priv->rx_bd[--i].addr |= ZYNQ_GEM_RXBUF_WRAP_MASK; /* Write RxBDs to IP */ - writel((ulong)priv->rx_bd, ®s->rxqbase); + writel(lower_32_bits((ulong)priv->rx_bd), ®s->rxqbase); +#if defined(CONFIG_PHYS_64BIT) + writel(upper_32_bits((ulong)priv->rx_bd), ®s->upper_rxqbase); +#endif /* Setup for DMA Configuration register */ writel(ZYNQ_GEM_DMACR_INIT, ®s->dmacr); @@ -409,12 +432,18 @@ static int zynq_gem_init(struct udevice *dev) /* Disable the second priority queue */ dummy_tx_bd->addr = 0; +#if defined(CONFIG_PHYS_64BIT) + dummy_tx_bd->addr_hi = 0; +#endif dummy_tx_bd->status = ZYNQ_GEM_TXBUF_WRAP_MASK | ZYNQ_GEM_TXBUF_LAST_MASK| ZYNQ_GEM_TXBUF_USED_MASK; dummy_rx_bd->addr = ZYNQ_GEM_RXBUF_WRAP_MASK | ZYNQ_GEM_RXBUF_NEW_MASK; +#if defined(CONFIG_PHYS_64BIT) + dummy_rx_bd->addr_hi = 0; +#endif dummy_rx_bd->status = 0; writel((ulong)dummy_tx_bd, ®s->transmit_q1_ptr); @@ -484,7 +513,8 @@ static int zynq_gem_init(struct udevice *dev) static int zynq_gem_send(struct udevice *dev, void *ptr, int len) { - u32 addr, size; + dma_addr_t addr; + u32 size; struct zynq_gem_priv *priv = dev_get_priv(dev); struct zynq_gem_regs *regs = priv->iobase; struct emac_bd *current_bd = &priv->tx_bd[1]; @@ -492,17 +522,26 @@ static int zynq_gem_send(struct udevice *dev, void *ptr, int len) /* Setup Tx BD */ memset(priv->tx_bd, 0, sizeof(struct emac_bd)); - priv->tx_bd->addr = (ulong)ptr; + priv->tx_bd->addr = lower_32_bits((ulong)ptr); +#if defined(CONFIG_PHYS_64BIT) + priv->tx_bd->addr_hi = upper_32_bits((ulong)ptr); +#endif priv->tx_bd->status = (len & ZYNQ_GEM_TXBUF_FRMLEN_MASK) | ZYNQ_GEM_TXBUF_LAST_MASK; /* Dummy descriptor to mark it as the last in descriptor chain */ current_bd->addr = 0x0; +#if defined(CONFIG_PHYS_64BIT) + current_bd->addr_hi = 0x0; +#endif current_bd->status = ZYNQ_GEM_TXBUF_WRAP_MASK | ZYNQ_GEM_TXBUF_LAST_MASK| ZYNQ_GEM_TXBUF_USED_MASK; /* setup BD */ - writel((ulong)priv->tx_bd, ®s->txqbase); + writel(lower_32_bits((ulong)priv->tx_bd), ®s->txqbase); +#if defined(CONFIG_PHYS_64BIT) + writel(upper_32_bits((ulong)priv->tx_bd), ®s->upper_txqbase); +#endif addr = (ulong) ptr; addr &= ~(ARCH_DMA_MINALIGN - 1); @@ -530,7 +569,7 @@ static int zynq_gem_send(struct udevice *dev, void *ptr, int len) static int zynq_gem_recv(struct udevice *dev, int flags, uchar **packetp) { int frame_len; - u32 addr; + dma_addr_t addr; struct zynq_gem_priv *priv = dev_get_priv(dev); struct emac_bd *current_bd = &priv->rx_bd[priv->rxbd_current]; @@ -549,8 +588,14 @@ static int zynq_gem_recv(struct udevice *dev, int flags, uchar **packetp) return -1; } +#if defined(CONFIG_PHYS_64BIT) + addr = (dma_addr_t)((current_bd->addr & ZYNQ_GEM_RXBUF_ADD_MASK) + | ((dma_addr_t)current_bd->addr_hi << 32)); +#else addr = current_bd->addr & ZYNQ_GEM_RXBUF_ADD_MASK; +#endif addr &= ~(ARCH_DMA_MINALIGN - 1); + *packetp = (uchar *)(uintptr_t)addr; return frame_len;