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path: root/drivers/net/davinci_emac.c
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Diffstat (limited to 'drivers/net/davinci_emac.c')
-rw-r--r--drivers/net/davinci_emac.c266
1 files changed, 171 insertions, 95 deletions
diff --git a/drivers/net/davinci_emac.c b/drivers/net/davinci_emac.c
index fa8cee4..02bbb8c 100644
--- a/drivers/net/davinci_emac.c
+++ b/drivers/net/davinci_emac.c
@@ -42,10 +42,17 @@
#include <miiphy.h>
#include <malloc.h>
#include <asm/arch/emac_defs.h>
+#include <asm/io.h>
unsigned int emac_dbg = 0;
#define debug_emac(fmt,args...) if (emac_dbg) printf(fmt,##args)
+#ifdef DAVINCI_EMAC_GIG_ENABLE
+#define emac_gigabit_enable() davinci_eth_gigabit_enable()
+#else
+#define emac_gigabit_enable() /* no gigabit to enable */
+#endif
+
static void davinci_eth_mdio_enable(void);
static int gen_init_phy(int phy_addr);
@@ -99,12 +106,14 @@ static void davinci_eth_mdio_enable(void)
clkdiv = (EMAC_MDIO_BUS_FREQ / EMAC_MDIO_CLOCK_FREQ) - 1;
- adap_mdio->CONTROL = (clkdiv & 0xff) |
- MDIO_CONTROL_ENABLE |
- MDIO_CONTROL_FAULT |
- MDIO_CONTROL_FAULT_ENABLE;
+ writel((clkdiv & 0xff) |
+ MDIO_CONTROL_ENABLE |
+ MDIO_CONTROL_FAULT |
+ MDIO_CONTROL_FAULT_ENABLE,
+ &adap_mdio->CONTROL);
- while (adap_mdio->CONTROL & MDIO_CONTROL_IDLE) {;}
+ while (readl(&adap_mdio->CONTROL) & MDIO_CONTROL_IDLE)
+ ;
}
/*
@@ -119,7 +128,8 @@ static int davinci_eth_phy_detect(void)
active_phy_addr = 0xff;
- if ((phy_act_state = adap_mdio->ALIVE) == 0)
+ phy_act_state = readl(&adap_mdio->ALIVE) & EMAC_MDIO_PHY_MASK;
+ if (phy_act_state == 0)
return(0); /* No active PHYs */
debug_emac("davinci_eth_phy_detect(), ALIVE = 0x%08x\n", phy_act_state);
@@ -144,15 +154,18 @@ int davinci_eth_phy_read(u_int8_t phy_addr, u_int8_t reg_num, u_int16_t *data)
{
int tmp;
- while (adap_mdio->USERACCESS0 & MDIO_USERACCESS0_GO) {;}
+ while (readl(&adap_mdio->USERACCESS0) & MDIO_USERACCESS0_GO)
+ ;
- adap_mdio->USERACCESS0 = MDIO_USERACCESS0_GO |
- MDIO_USERACCESS0_WRITE_READ |
- ((reg_num & 0x1f) << 21) |
- ((phy_addr & 0x1f) << 16);
+ writel(MDIO_USERACCESS0_GO |
+ MDIO_USERACCESS0_WRITE_READ |
+ ((reg_num & 0x1f) << 21) |
+ ((phy_addr & 0x1f) << 16),
+ &adap_mdio->USERACCESS0);
/* Wait for command to complete */
- while ((tmp = adap_mdio->USERACCESS0) & MDIO_USERACCESS0_GO) {;}
+ while ((tmp = readl(&adap_mdio->USERACCESS0)) & MDIO_USERACCESS0_GO)
+ ;
if (tmp & MDIO_USERACCESS0_ACK) {
*data = tmp & 0xffff;
@@ -167,16 +180,19 @@ int davinci_eth_phy_read(u_int8_t phy_addr, u_int8_t reg_num, u_int16_t *data)
int davinci_eth_phy_write(u_int8_t phy_addr, u_int8_t reg_num, u_int16_t data)
{
- while (adap_mdio->USERACCESS0 & MDIO_USERACCESS0_GO) {;}
+ while (readl(&adap_mdio->USERACCESS0) & MDIO_USERACCESS0_GO)
+ ;
- adap_mdio->USERACCESS0 = MDIO_USERACCESS0_GO |
- MDIO_USERACCESS0_WRITE_WRITE |
- ((reg_num & 0x1f) << 21) |
- ((phy_addr & 0x1f) << 16) |
- (data & 0xffff);
+ writel(MDIO_USERACCESS0_GO |
+ MDIO_USERACCESS0_WRITE_WRITE |
+ ((reg_num & 0x1f) << 21) |
+ ((phy_addr & 0x1f) << 16) |
+ (data & 0xffff),
+ &adap_mdio->USERACCESS0);
/* Wait for command to complete */
- while (adap_mdio->USERACCESS0 & MDIO_USERACCESS0_GO) {;}
+ while (readl(&adap_mdio->USERACCESS0) & MDIO_USERACCESS0_GO)
+ ;
return(1);
}
@@ -245,9 +261,24 @@ static int davinci_mii_phy_write(char *devname, unsigned char addr, unsigned cha
{
return(davinci_eth_phy_write(addr, reg, value) ? 0 : 1);
}
-
#endif
+static void __attribute__((unused)) davinci_eth_gigabit_enable(void)
+{
+ u_int16_t data;
+
+ if (davinci_eth_phy_read(EMAC_MDIO_PHY_NUM, 0, &data)) {
+ if (data & (1 << 6)) { /* speed selection MSB */
+ /*
+ * Check if link detected is giga-bit
+ * If Gigabit mode detected, enable gigbit in MAC
+ */
+ writel(EMAC_MACCONTROL_GIGFORCE |
+ EMAC_MACCONTROL_GIGABIT_ENABLE,
+ &adap_emac->MACCONTROL);
+ }
+ }
+}
/* Eth device open */
static int davinci_eth_open(struct eth_device *dev, bd_t *bis)
@@ -255,64 +286,73 @@ static int davinci_eth_open(struct eth_device *dev, bd_t *bis)
dv_reg_p addr;
u_int32_t clkdiv, cnt;
volatile emac_desc *rx_desc;
+ unsigned long mac_hi;
+ unsigned long mac_lo;
debug_emac("+ emac_open\n");
/* Reset EMAC module and disable interrupts in wrapper */
- adap_emac->SOFTRESET = 1;
- while (adap_emac->SOFTRESET != 0) {;}
- adap_ewrap->EWCTL = 0;
+ writel(1, &adap_emac->SOFTRESET);
+ while (readl(&adap_emac->SOFTRESET) != 0)
+ ;
+#if defined(DAVINCI_EMAC_VERSION2)
+ writel(1, &adap_ewrap->softrst);
+ while (readl(&adap_ewrap->softrst) != 0)
+ ;
+#else
+ writel(0, &adap_ewrap->EWCTL);
for (cnt = 0; cnt < 5; cnt++) {
- clkdiv = adap_ewrap->EWCTL;
+ clkdiv = readl(&adap_ewrap->EWCTL);
}
+#endif
rx_desc = emac_rx_desc;
- adap_emac->TXCONTROL = 0x01;
- adap_emac->RXCONTROL = 0x01;
+ writel(1, &adap_emac->TXCONTROL);
+ writel(1, &adap_emac->RXCONTROL);
/* Set MAC Addresses & Init multicast Hash to 0 (disable any multicast receive) */
/* Using channel 0 only - other channels are disabled */
- adap_emac->MACINDEX = 0;
- adap_emac->MACADDRHI =
- (davinci_eth_mac_addr[3] << 24) |
- (davinci_eth_mac_addr[2] << 16) |
- (davinci_eth_mac_addr[1] << 8) |
- (davinci_eth_mac_addr[0]);
- adap_emac->MACADDRLO =
- (davinci_eth_mac_addr[5] << 8) |
- (davinci_eth_mac_addr[4]);
-
- adap_emac->MACHASH1 = 0;
- adap_emac->MACHASH2 = 0;
+ writel(0, &adap_emac->MACINDEX);
+ mac_hi = (davinci_eth_mac_addr[3] << 24) |
+ (davinci_eth_mac_addr[2] << 16) |
+ (davinci_eth_mac_addr[1] << 8) |
+ (davinci_eth_mac_addr[0]);
+ mac_lo = (davinci_eth_mac_addr[5] << 8) |
+ (davinci_eth_mac_addr[4]);
+
+ writel(mac_hi, &adap_emac->MACADDRHI);
+#if defined(DAVINCI_EMAC_VERSION2)
+ writel(mac_lo | EMAC_MAC_ADDR_IS_VALID | EMAC_MAC_ADDR_MATCH,
+ &adap_emac->MACADDRLO);
+#else
+ writel(mac_lo, &adap_emac->MACADDRLO);
+#endif
+
+ writel(0, &adap_emac->MACHASH1);
+ writel(0, &adap_emac->MACHASH2);
/* Set source MAC address - REQUIRED */
- adap_emac->MACSRCADDRHI =
- (davinci_eth_mac_addr[3] << 24) |
- (davinci_eth_mac_addr[2] << 16) |
- (davinci_eth_mac_addr[1] << 8) |
- (davinci_eth_mac_addr[0]);
- adap_emac->MACSRCADDRLO =
- (davinci_eth_mac_addr[4] << 8) |
- (davinci_eth_mac_addr[5]);
+ writel(mac_hi, &adap_emac->MACSRCADDRHI);
+ writel(mac_lo, &adap_emac->MACSRCADDRLO);
/* Set DMA 8 TX / 8 RX Head pointers to 0 */
addr = &adap_emac->TX0HDP;
for(cnt = 0; cnt < 16; cnt++)
- *addr++ = 0;
+ writel(0, addr++);
addr = &adap_emac->RX0HDP;
for(cnt = 0; cnt < 16; cnt++)
- *addr++ = 0;
+ writel(0, addr++);
/* Clear Statistics (do this before setting MacControl register) */
addr = &adap_emac->RXGOODFRAMES;
for(cnt = 0; cnt < EMAC_NUM_STATS; cnt++)
- *addr++ = 0;
+ writel(0, addr++);
/* No multicast addressing */
- adap_emac->MACHASH1 = 0;
- adap_emac->MACHASH2 = 0;
+ writel(0, &adap_emac->MACHASH1);
+ writel(0, &adap_emac->MACHASH2);
/* Create RX queue and set receive process in place */
emac_rx_active_head = emac_rx_desc;
@@ -324,34 +364,52 @@ static int davinci_eth_open(struct eth_device *dev, bd_t *bis)
rx_desc++;
}
- /* Set the last descriptor's "next" parameter to 0 to end the RX desc list */
+ /* Finalize the rx desc list */
rx_desc--;
rx_desc->next = 0;
emac_rx_active_tail = rx_desc;
emac_rx_queue_active = 1;
/* Enable TX/RX */
- adap_emac->RXMAXLEN = EMAC_MAX_ETHERNET_PKT_SIZE;
- adap_emac->RXBUFFEROFFSET = 0;
+ writel(EMAC_MAX_ETHERNET_PKT_SIZE, &adap_emac->RXMAXLEN);
+ writel(0, &adap_emac->RXBUFFEROFFSET);
- /* No fancy configs - Use this for promiscous for debug - EMAC_RXMBPENABLE_RXCAFEN_ENABLE */
- adap_emac->RXMBPENABLE = EMAC_RXMBPENABLE_RXBROADEN;
+ /*
+ * No fancy configs - Use this for promiscous debug
+ * - EMAC_RXMBPENABLE_RXCAFEN_ENABLE
+ */
+ writel(EMAC_RXMBPENABLE_RXBROADEN, &adap_emac->RXMBPENABLE);
/* Enable ch 0 only */
- adap_emac->RXUNICASTSET = 0x01;
+ writel(1, &adap_emac->RXUNICASTSET);
/* Enable MII interface and Full duplex mode */
- adap_emac->MACCONTROL = (EMAC_MACCONTROL_MIIEN_ENABLE | EMAC_MACCONTROL_FULLDUPLEX_ENABLE);
+#ifdef CONFIG_SOC_DA8XX
+ writel((EMAC_MACCONTROL_MIIEN_ENABLE |
+ EMAC_MACCONTROL_FULLDUPLEX_ENABLE |
+ EMAC_MACCONTROL_RMIISPEED_100),
+ &adap_emac->MACCONTROL);
+#else
+ writel((EMAC_MACCONTROL_MIIEN_ENABLE |
+ EMAC_MACCONTROL_FULLDUPLEX_ENABLE),
+ &adap_emac->MACCONTROL);
+#endif
/* Init MDIO & get link state */
clkdiv = (EMAC_MDIO_BUS_FREQ / EMAC_MDIO_CLOCK_FREQ) - 1;
- adap_mdio->CONTROL = ((clkdiv & 0xff) | MDIO_CONTROL_ENABLE | MDIO_CONTROL_FAULT);
+ writel((clkdiv & 0xff) | MDIO_CONTROL_ENABLE | MDIO_CONTROL_FAULT,
+ &adap_mdio->CONTROL);
+
+ /* We need to wait for MDIO to start */
+ udelay(1000);
if (!phy.get_link_speed(active_phy_addr))
return(0);
+ emac_gigabit_enable();
+
/* Start receive process */
- adap_emac->RX0HDP = (u_int32_t)emac_rx_desc;
+ writel((u_int32_t)emac_rx_desc, &adap_emac->RX0HDP);
debug_emac("- emac_open\n");
@@ -368,34 +426,42 @@ static void davinci_eth_ch_teardown(int ch)
if (ch == EMAC_CH_TX) {
/* Init TX channel teardown */
- adap_emac->TXTEARDOWN = 1;
- for(cnt = 0; cnt != 0xfffffffc; cnt = adap_emac->TX0CP) {
- /* Wait here for Tx teardown completion interrupt to occur
- * Note: A task delay can be called here to pend rather than
- * occupying CPU cycles - anyway it has been found that teardown
- * takes very few cpu cycles and does not affect functionality */
- dly--;
- udelay(1);
- if (dly == 0)
+ writel(1, &adap_emac->TXTEARDOWN);
+ do {
+ /*
+ * Wait here for Tx teardown completion interrupt to
+ * occur. Note: A task delay can be called here to pend
+ * rather than occupying CPU cycles - anyway it has
+ * been found that teardown takes very few cpu cycles
+ * and does not affect functionality
+ */
+ dly--;
+ udelay(1);
+ if (dly == 0)
break;
- }
- adap_emac->TX0CP = cnt;
- adap_emac->TX0HDP = 0;
+ cnt = readl(&adap_emac->TX0CP);
+ } while (cnt != 0xfffffffc);
+ writel(cnt, &adap_emac->TX0CP);
+ writel(0, &adap_emac->TX0HDP);
} else {
/* Init RX channel teardown */
- adap_emac->RXTEARDOWN = 1;
- for(cnt = 0; cnt != 0xfffffffc; cnt = adap_emac->RX0CP) {
- /* Wait here for Rx teardown completion interrupt to occur
- * Note: A task delay can be called here to pend rather than
- * occupying CPU cycles - anyway it has been found that teardown
- * takes very few cpu cycles and does not affect functionality */
- dly--;
- udelay(1);
- if (dly == 0)
+ writel(1, &adap_emac->RXTEARDOWN);
+ do {
+ /*
+ * Wait here for Rx teardown completion interrupt to
+ * occur. Note: A task delay can be called here to pend
+ * rather than occupying CPU cycles - anyway it has
+ * been found that teardown takes very few cpu cycles
+ * and does not affect functionality
+ */
+ dly--;
+ udelay(1);
+ if (dly == 0)
break;
- }
- adap_emac->RX0CP = cnt;
- adap_emac->RX0HDP = 0;
+ cnt = readl(&adap_emac->RX0CP);
+ } while (cnt != 0xfffffffc);
+ writel(cnt, &adap_emac->RX0CP);
+ writel(0, &adap_emac->RX0HDP);
}
debug_emac("- emac_ch_teardown\n");
@@ -410,8 +476,12 @@ static void davinci_eth_close(struct eth_device *dev)
davinci_eth_ch_teardown(EMAC_CH_RX); /* RX Channel teardown */
/* Reset EMAC module and disable interrupts in wrapper */
- adap_emac->SOFTRESET = 1;
- adap_ewrap->EWCTL = 0;
+ writel(1, &adap_emac->SOFTRESET);
+#if defined(DAVINCI_EMAC_VERSION2)
+ writel(1, &adap_ewrap->softrst);
+#else
+ writel(0, &adap_ewrap->EWCTL);
+#endif
debug_emac("- emac_close\n");
}
@@ -435,6 +505,8 @@ static int davinci_eth_send_packet (struct eth_device *dev,
return (ret_status);
}
+ emac_gigabit_enable();
+
/* Check packet size and if < EMAC_MIN_ETHERNET_PKT_SIZE, pad it up */
if (length < EMAC_MIN_ETHERNET_PKT_SIZE) {
length = EMAC_MIN_ETHERNET_PKT_SIZE;
@@ -449,7 +521,7 @@ static int davinci_eth_send_packet (struct eth_device *dev,
EMAC_CPPI_OWNERSHIP_BIT |
EMAC_CPPI_EOP_BIT);
/* Send the packet */
- adap_emac->TX0HDP = (unsigned int) emac_tx_desc;
+ writel((unsigned long)emac_tx_desc, &adap_emac->TX0HDP);
/* Wait for packet to complete or link down */
while (1) {
@@ -457,7 +529,10 @@ static int davinci_eth_send_packet (struct eth_device *dev,
davinci_eth_ch_teardown (EMAC_CH_TX);
return (ret_status);
}
- if (adap_emac->TXINTSTATRAW & 0x01) {
+
+ emac_gigabit_enable();
+
+ if (readl(&adap_emac->TXINTSTATRAW) & 0x01) {
ret_status = length;
break;
}
@@ -490,15 +565,15 @@ static int davinci_eth_rcv_packet (struct eth_device *dev)
}
/* Ack received packet descriptor */
- adap_emac->RX0CP = (unsigned int) rx_curr_desc;
+ writel((unsigned long)rx_curr_desc, &adap_emac->RX0CP);
curr_desc = rx_curr_desc;
emac_rx_active_head =
(volatile emac_desc *) rx_curr_desc->next;
if (status & EMAC_CPPI_EOQ_BIT) {
if (emac_rx_active_head) {
- adap_emac->RX0HDP =
- (unsigned int) emac_rx_active_head;
+ writel((unsigned long)emac_rx_active_head,
+ &adap_emac->RX0HDP);
} else {
emac_rx_queue_active = 0;
printf ("INFO:emac_rcv_packet: RX Queue not active\n");
@@ -515,8 +590,8 @@ static int davinci_eth_rcv_packet (struct eth_device *dev)
emac_rx_active_head = curr_desc;
emac_rx_active_tail = curr_desc;
if (emac_rx_queue_active != 0) {
- adap_emac->RX0HDP =
- (unsigned int) emac_rx_active_head;
+ writel((unsigned long)emac_rx_active_head,
+ &adap_emac->RX0HDP);
printf ("INFO: emac_rcv_pkt: active queue head = 0, HDP fired\n");
emac_rx_queue_active = 1;
}
@@ -526,7 +601,8 @@ static int davinci_eth_rcv_packet (struct eth_device *dev)
tail_desc->next = (unsigned int) curr_desc;
status = tail_desc->pkt_flag_len;
if (status & EMAC_CPPI_EOQ_BIT) {
- adap_emac->RX0HDP = (unsigned int) curr_desc;
+ writel((unsigned long)curr_desc,
+ &adap_emac->RX0HDP);
status &= ~EMAC_CPPI_EOQ_BIT;
tail_desc->pkt_flag_len = status;
}
@@ -566,7 +642,7 @@ int davinci_emac_initialize(void)
davinci_eth_mdio_enable();
for (i = 0; i < 256; i++) {
- if (adap_mdio->ALIVE)
+ if (readl(&adap_mdio->ALIVE))
break;
udelay(10);
}
generated by cgit v1.1 at 2024-12-22 02:31:25 +0000