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path: root/drivers/net/macb.c
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Diffstat (limited to 'drivers/net/macb.c')
-rw-r--r--drivers/net/macb.c208
1 files changed, 153 insertions, 55 deletions
diff --git a/drivers/net/macb.c b/drivers/net/macb.c
index a7eddd647d0..c99cf663a41 100644
--- a/drivers/net/macb.c
+++ b/drivers/net/macb.c
@@ -45,9 +45,17 @@
DECLARE_GLOBAL_DATA_PTR;
-#define MACB_RX_BUFFER_SIZE 4096
-#define MACB_RX_RING_SIZE (MACB_RX_BUFFER_SIZE / 128)
+/*
+ * These buffer sizes must be power of 2 and divisible
+ * by RX_BUFFER_MULTIPLE
+ */
+#define MACB_RX_BUFFER_SIZE 128
+#define GEM_RX_BUFFER_SIZE 2048
+#define RX_BUFFER_MULTIPLE 64
+
+#define MACB_RX_RING_SIZE 32
#define MACB_TX_RING_SIZE 16
+
#define MACB_TX_TIMEOUT 1000
#define MACB_AUTONEG_TIMEOUT 5000000
@@ -77,31 +85,16 @@ struct macb_dma_desc {
#define MACB_RX_DMA_DESC_SIZE (DMA_DESC_BYTES(MACB_RX_RING_SIZE))
#define MACB_TX_DUMMY_DMA_DESC_SIZE (DMA_DESC_BYTES(1))
-#define RXADDR_USED 0x00000001
-#define RXADDR_WRAP 0x00000002
-
#define RXBUF_FRMLEN_MASK 0x00000fff
-#define RXBUF_FRAME_START 0x00004000
-#define RXBUF_FRAME_END 0x00008000
-#define RXBUF_TYPEID_MATCH 0x00400000
-#define RXBUF_ADDR4_MATCH 0x00800000
-#define RXBUF_ADDR3_MATCH 0x01000000
-#define RXBUF_ADDR2_MATCH 0x02000000
-#define RXBUF_ADDR1_MATCH 0x04000000
-#define RXBUF_BROADCAST 0x80000000
-
#define TXBUF_FRMLEN_MASK 0x000007ff
-#define TXBUF_FRAME_END 0x00008000
-#define TXBUF_NOCRC 0x00010000
-#define TXBUF_EXHAUSTED 0x08000000
-#define TXBUF_UNDERRUN 0x10000000
-#define TXBUF_MAXRETRY 0x20000000
-#define TXBUF_WRAP 0x40000000
-#define TXBUF_USED 0x80000000
struct macb_device {
void *regs;
+ bool is_big_endian;
+
+ const struct macb_config *config;
+
unsigned int rx_tail;
unsigned int tx_head;
unsigned int tx_tail;
@@ -112,6 +105,7 @@ struct macb_device {
void *tx_buffer;
struct macb_dma_desc *rx_ring;
struct macb_dma_desc *tx_ring;
+ size_t rx_buffer_size;
unsigned long rx_buffer_dma;
unsigned long rx_ring_dma;
@@ -137,6 +131,13 @@ struct macb_device {
phy_interface_t phy_interface;
#endif
};
+
+struct macb_config {
+ unsigned int dma_burst_length;
+
+ int (*clk_init)(struct udevice *dev, ulong rate);
+};
+
#ifndef CONFIG_DM_ETH
#define to_macb(_nd) container_of(_nd, struct macb_device, netdev)
#endif
@@ -316,9 +317,9 @@ static int _macb_send(struct macb_device *macb, const char *name, void *packet,
paddr = dma_map_single(packet, length, DMA_TO_DEVICE);
ctrl = length & TXBUF_FRMLEN_MASK;
- ctrl |= TXBUF_FRAME_END;
+ ctrl |= MACB_BIT(TX_LAST);
if (tx_head == (MACB_TX_RING_SIZE - 1)) {
- ctrl |= TXBUF_WRAP;
+ ctrl |= MACB_BIT(TX_WRAP);
macb->tx_head = 0;
} else {
macb->tx_head++;
@@ -340,7 +341,7 @@ static int _macb_send(struct macb_device *macb, const char *name, void *packet,
barrier();
macb_invalidate_ring_desc(macb, TX);
ctrl = macb->tx_ring[tx_head].ctrl;
- if (ctrl & TXBUF_USED)
+ if (ctrl & MACB_BIT(TX_USED))
break;
udelay(1);
}
@@ -348,9 +349,9 @@ static int _macb_send(struct macb_device *macb, const char *name, void *packet,
dma_unmap_single(packet, length, paddr);
if (i <= MACB_TX_TIMEOUT) {
- if (ctrl & TXBUF_UNDERRUN)
+ if (ctrl & MACB_BIT(TX_UNDERRUN))
printf("%s: TX underrun\n", name);
- if (ctrl & TXBUF_EXHAUSTED)
+ if (ctrl & MACB_BIT(TX_BUF_EXHAUSTED))
printf("%s: TX buffers exhausted in mid frame\n", name);
} else {
printf("%s: TX timeout\n", name);
@@ -369,14 +370,14 @@ static void reclaim_rx_buffers(struct macb_device *macb,
macb_invalidate_ring_desc(macb, RX);
while (i > new_tail) {
- macb->rx_ring[i].addr &= ~RXADDR_USED;
+ macb->rx_ring[i].addr &= ~MACB_BIT(RX_USED);
i++;
if (i > MACB_RX_RING_SIZE)
i = 0;
}
while (i < new_tail) {
- macb->rx_ring[i].addr &= ~RXADDR_USED;
+ macb->rx_ring[i].addr &= ~MACB_BIT(RX_USED);
i++;
}
@@ -396,26 +397,27 @@ static int _macb_recv(struct macb_device *macb, uchar **packetp)
for (;;) {
macb_invalidate_ring_desc(macb, RX);
- if (!(macb->rx_ring[next_rx_tail].addr & RXADDR_USED))
+ if (!(macb->rx_ring[next_rx_tail].addr & MACB_BIT(RX_USED)))
return -EAGAIN;
status = macb->rx_ring[next_rx_tail].ctrl;
- if (status & RXBUF_FRAME_START) {
+ if (status & MACB_BIT(RX_SOF)) {
if (next_rx_tail != macb->rx_tail)
reclaim_rx_buffers(macb, next_rx_tail);
macb->wrapped = false;
}
- if (status & RXBUF_FRAME_END) {
- buffer = macb->rx_buffer + 128 * macb->rx_tail;
+ if (status & MACB_BIT(RX_EOF)) {
+ buffer = macb->rx_buffer +
+ macb->rx_buffer_size * macb->rx_tail;
length = status & RXBUF_FRMLEN_MASK;
macb_invalidate_rx_buffer(macb);
if (macb->wrapped) {
unsigned int headlen, taillen;
- headlen = 128 * (MACB_RX_RING_SIZE
- - macb->rx_tail);
+ headlen = macb->rx_buffer_size *
+ (MACB_RX_RING_SIZE - macb->rx_tail);
taillen = length - headlen;
memcpy((void *)net_rx_packets[0],
buffer, headlen);
@@ -495,21 +497,38 @@ static int macb_phy_find(struct macb_device *macb, const char *name)
* when operation failed.
*/
#ifdef CONFIG_DM_ETH
+static int macb_sifive_clk_init(struct udevice *dev, ulong rate)
+{
+ fdt_addr_t addr;
+ void *gemgxl_regs;
+
+ addr = dev_read_addr_index(dev, 1);
+ if (addr == FDT_ADDR_T_NONE)
+ return -ENODEV;
+
+ gemgxl_regs = (void __iomem *)addr;
+ if (!gemgxl_regs)
+ return -ENODEV;
+
+ /*
+ * SiFive GEMGXL TX clock operation mode:
+ *
+ * 0 = GMII mode. Use 125 MHz gemgxlclk from PRCI in TX logic
+ * and output clock on GMII output signal GTX_CLK
+ * 1 = MII mode. Use MII input signal TX_CLK in TX logic
+ */
+ writel(rate != 125000000, gemgxl_regs);
+ return 0;
+}
+
int __weak macb_linkspd_cb(struct udevice *dev, unsigned int speed)
{
#ifdef CONFIG_CLK
+ struct macb_device *macb = dev_get_priv(dev);
struct clk tx_clk;
ulong rate;
int ret;
- /*
- * "tx_clk" is an optional clock source for MACB.
- * Ignore if it does not exist in DT.
- */
- ret = clk_get_by_name(dev, "tx_clk", &tx_clk);
- if (ret)
- return 0;
-
switch (speed) {
case _10BASET:
rate = 2500000; /* 2.5 MHz */
@@ -525,6 +544,17 @@ int __weak macb_linkspd_cb(struct udevice *dev, unsigned int speed)
return 0;
}
+ if (macb->config->clk_init)
+ return macb->config->clk_init(dev, rate);
+
+ /*
+ * "tx_clk" is an optional clock source for MACB.
+ * Ignore if it does not exist in DT.
+ */
+ ret = clk_get_by_name(dev, "tx_clk", &tx_clk);
+ if (ret)
+ return 0;
+
if (tx_clk.dev) {
ret = clk_set_rate(&tx_clk, rate);
if (ret)
@@ -699,7 +729,7 @@ static int gmac_init_multi_queues(struct macb_device *macb)
if (queue_mask & (1 << i))
num_queues++;
- macb->dummy_desc->ctrl = TXBUF_USED;
+ macb->dummy_desc->ctrl = MACB_BIT(TX_USED);
macb->dummy_desc->addr = 0;
flush_dcache_range(macb->dummy_desc_dma, macb->dummy_desc_dma +
ALIGN(MACB_TX_DUMMY_DMA_DESC_SIZE, PKTALIGN));
@@ -710,6 +740,31 @@ static int gmac_init_multi_queues(struct macb_device *macb)
return 0;
}
+static void gmac_configure_dma(struct macb_device *macb)
+{
+ u32 buffer_size;
+ u32 dmacfg;
+
+ buffer_size = macb->rx_buffer_size / RX_BUFFER_MULTIPLE;
+ dmacfg = gem_readl(macb, DMACFG) & ~GEM_BF(RXBS, -1L);
+ dmacfg |= GEM_BF(RXBS, buffer_size);
+
+ if (macb->config->dma_burst_length)
+ dmacfg = GEM_BFINS(FBLDO,
+ macb->config->dma_burst_length, dmacfg);
+
+ dmacfg |= GEM_BIT(TXPBMS) | GEM_BF(RXBMS, -1L);
+ dmacfg &= ~GEM_BIT(ENDIA_PKT);
+
+ if (macb->is_big_endian)
+ dmacfg |= GEM_BIT(ENDIA_DESC); /* CPU in big endian */
+ else
+ dmacfg &= ~GEM_BIT(ENDIA_DESC);
+
+ dmacfg &= ~GEM_BIT(ADDR64);
+ gem_writel(macb, DMACFG, dmacfg);
+}
+
#ifdef CONFIG_DM_ETH
static int _macb_init(struct udevice *dev, const char *name)
#else
@@ -732,10 +787,10 @@ static int _macb_init(struct macb_device *macb, const char *name)
paddr = macb->rx_buffer_dma;
for (i = 0; i < MACB_RX_RING_SIZE; i++) {
if (i == (MACB_RX_RING_SIZE - 1))
- paddr |= RXADDR_WRAP;
+ paddr |= MACB_BIT(RX_WRAP);
macb->rx_ring[i].addr = paddr;
macb->rx_ring[i].ctrl = 0;
- paddr += 128;
+ paddr += macb->rx_buffer_size;
}
macb_flush_ring_desc(macb, RX);
macb_flush_rx_buffer(macb);
@@ -743,9 +798,10 @@ static int _macb_init(struct macb_device *macb, const char *name)
for (i = 0; i < MACB_TX_RING_SIZE; i++) {
macb->tx_ring[i].addr = 0;
if (i == (MACB_TX_RING_SIZE - 1))
- macb->tx_ring[i].ctrl = TXBUF_USED | TXBUF_WRAP;
+ macb->tx_ring[i].ctrl = MACB_BIT(TX_USED) |
+ MACB_BIT(TX_WRAP);
else
- macb->tx_ring[i].ctrl = TXBUF_USED;
+ macb->tx_ring[i].ctrl = MACB_BIT(TX_USED);
}
macb_flush_ring_desc(macb, TX);
@@ -762,6 +818,8 @@ static int _macb_init(struct macb_device *macb, const char *name)
macb_writel(macb, TBQP, macb->tx_ring_dma);
if (macb_is_gem(macb)) {
+ /* Initialize DMA properties */
+ gmac_configure_dma(macb);
/* Check the multi queue and initialize the queue for tx */
gmac_init_multi_queues(macb);
@@ -774,14 +832,21 @@ static int _macb_init(struct macb_device *macb, const char *name)
#ifdef CONFIG_DM_ETH
if ((macb->phy_interface == PHY_INTERFACE_MODE_RMII) ||
(macb->phy_interface == PHY_INTERFACE_MODE_RGMII))
- gem_writel(macb, UR, GEM_BIT(RGMII));
+ gem_writel(macb, USRIO, GEM_BIT(RGMII));
else
- gem_writel(macb, UR, 0);
+ gem_writel(macb, USRIO, 0);
+
+ if (macb->phy_interface == PHY_INTERFACE_MODE_SGMII) {
+ unsigned int ncfgr = macb_readl(macb, NCFGR);
+
+ ncfgr |= GEM_BIT(SGMIIEN) | GEM_BIT(PCSSEL);
+ macb_writel(macb, NCFGR, ncfgr);
+ }
#else
#if defined(CONFIG_RGMII) || defined(CONFIG_RMII)
- gem_writel(macb, UR, GEM_BIT(RGMII));
+ gem_writel(macb, USRIO, GEM_BIT(RGMII));
#else
- gem_writel(macb, UR, 0);
+ gem_writel(macb, USRIO, 0);
#endif
#endif
} else {
@@ -903,8 +968,12 @@ static u32 gem_mdc_clk_div(int id, struct macb_device *macb)
config = GEM_BF(CLK, GEM_CLK_DIV48);
else if (macb_hz < 160000000)
config = GEM_BF(CLK, GEM_CLK_DIV64);
- else
+ else if (macb_hz < 240000000)
config = GEM_BF(CLK, GEM_CLK_DIV96);
+ else if (macb_hz < 320000000)
+ config = GEM_BF(CLK, GEM_CLK_DIV128);
+ else
+ config = GEM_BF(CLK, GEM_CLK_DIV224);
return config;
}
@@ -932,8 +1001,14 @@ static void _macb_eth_initialize(struct macb_device *macb)
int id = 0; /* This is not used by functions we call */
u32 ncfgr;
+ if (macb_is_gem(macb))
+ macb->rx_buffer_size = GEM_RX_BUFFER_SIZE;
+ else
+ macb->rx_buffer_size = MACB_RX_BUFFER_SIZE;
+
/* TODO: we need check the rx/tx_ring_dma is dcache line aligned */
- macb->rx_buffer = dma_alloc_coherent(MACB_RX_BUFFER_SIZE,
+ macb->rx_buffer = dma_alloc_coherent(macb->rx_buffer_size *
+ MACB_RX_RING_SIZE,
&macb->rx_buffer_dma);
macb->rx_ring = dma_alloc_coherent(MACB_RX_DMA_DESC_SIZE,
&macb->rx_ring_dma);
@@ -1142,12 +1217,17 @@ static int macb_enable_clk(struct udevice *dev)
}
#endif
+static const struct macb_config default_gem_config = {
+ .dma_burst_length = 16,
+ .clk_init = NULL,
+};
+
static int macb_eth_probe(struct udevice *dev)
{
struct eth_pdata *pdata = dev_get_platdata(dev);
struct macb_device *macb = dev_get_priv(dev);
const char *phy_mode;
- __maybe_unused int ret;
+ int ret;
phy_mode = fdt_getprop(gd->fdt_blob, dev_of_offset(dev), "phy-mode",
NULL);
@@ -1160,6 +1240,12 @@ static int macb_eth_probe(struct udevice *dev)
macb->regs = (void *)pdata->iobase;
+ macb->is_big_endian = (cpu_to_be32(0x12345678) == 0x12345678);
+
+ macb->config = (struct macb_config *)dev_get_driver_data(dev);
+ if (!macb->config)
+ macb->config = &default_gem_config;
+
#ifdef CONFIG_CLK
ret = macb_enable_clk(dev);
if (ret)
@@ -1220,13 +1306,25 @@ static int macb_eth_ofdata_to_platdata(struct udevice *dev)
return macb_late_eth_ofdata_to_platdata(dev);
}
+static const struct macb_config sama5d4_config = {
+ .dma_burst_length = 4,
+ .clk_init = NULL,
+};
+
+static const struct macb_config sifive_config = {
+ .dma_burst_length = 16,
+ .clk_init = macb_sifive_clk_init,
+};
+
static const struct udevice_id macb_eth_ids[] = {
{ .compatible = "cdns,macb" },
{ .compatible = "cdns,at91sam9260-macb" },
{ .compatible = "atmel,sama5d2-gem" },
{ .compatible = "atmel,sama5d3-gem" },
- { .compatible = "atmel,sama5d4-gem" },
+ { .compatible = "atmel,sama5d4-gem", .data = (ulong)&sama5d4_config },
{ .compatible = "cdns,zynq-gem" },
+ { .compatible = "sifive,fu540-c000-gem",
+ .data = (ulong)&sifive_config },
{ }
};
generated by cgit v1.2.3 (git 2.0.4) at 2025-08-06 14:06:49 +0000