diff options
Diffstat (limited to 'drivers/net/davinci_emac.c')
| -rw-r--r-- | drivers/net/davinci_emac.c | 94 |
1 files changed, 81 insertions, 13 deletions
diff --git a/drivers/net/davinci_emac.c b/drivers/net/davinci_emac.c index 36c33af..fbd0f1b 100644 --- a/drivers/net/davinci_emac.c +++ b/drivers/net/davinci_emac.c @@ -41,12 +41,35 @@ #include <net.h> #include <miiphy.h> #include <malloc.h> +#include <linux/compiler.h> #include <asm/arch/emac_defs.h> #include <asm/io.h> +#include "davinci_emac.h" unsigned int emac_dbg = 0; #define debug_emac(fmt,args...) if (emac_dbg) printf(fmt,##args) +#ifdef EMAC_HW_RAM_ADDR +static inline unsigned long BD_TO_HW(unsigned long x) +{ + if (x == 0) + return 0; + + return x - EMAC_WRAPPER_RAM_ADDR + EMAC_HW_RAM_ADDR; +} + +static inline unsigned long HW_TO_BD(unsigned long x) +{ + if (x == 0) + return 0; + + return x - EMAC_HW_RAM_ADDR + EMAC_WRAPPER_RAM_ADDR; +} +#else +#define BD_TO_HW(x) (x) +#define HW_TO_BD(x) (x) +#endif + #ifdef DAVINCI_EMAC_GIG_ENABLE #define emac_gigabit_enable(phy_addr) davinci_eth_gigabit_enable(phy_addr) #else @@ -83,7 +106,8 @@ static volatile emac_desc *emac_rx_active_tail = 0; static int emac_rx_queue_active = 0; /* Receive packet buffers */ -static unsigned char emac_rx_buffers[EMAC_MAX_RX_BUFFERS * (EMAC_MAX_ETHERNET_PKT_SIZE + EMAC_PKT_ALIGN)]; +static unsigned char emac_rx_buffers[EMAC_MAX_RX_BUFFERS * EMAC_RXBUF_SIZE] + __aligned(ARCH_DMA_MINALIGN); #ifndef CONFIG_SYS_DAVINCI_EMAC_PHY_COUNT #define CONFIG_SYS_DAVINCI_EMAC_PHY_COUNT 3 @@ -97,6 +121,26 @@ static u_int8_t num_phy; phy_t phy[CONFIG_SYS_DAVINCI_EMAC_PHY_COUNT]; +static inline void davinci_flush_rx_descs(void) +{ + /* flush the whole RX descs area */ + flush_dcache_range(EMAC_WRAPPER_RAM_ADDR + EMAC_RX_DESC_BASE, + EMAC_WRAPPER_RAM_ADDR + EMAC_TX_DESC_BASE); +} + +static inline void davinci_invalidate_rx_descs(void) +{ + /* invalidate the whole RX descs area */ + invalidate_dcache_range(EMAC_WRAPPER_RAM_ADDR + EMAC_RX_DESC_BASE, + EMAC_WRAPPER_RAM_ADDR + EMAC_TX_DESC_BASE); +} + +static inline void davinci_flush_desc(emac_desc *desc) +{ + flush_dcache_range((unsigned long)desc, + (unsigned long)desc + sizeof(*desc)); +} + static int davinci_eth_set_mac_addr(struct eth_device *dev) { unsigned long mac_hi; @@ -176,7 +220,7 @@ static int davinci_eth_phy_detect(void) for (i = 0, j = 0; i < 32; i++) if (phy_act_state & (1 << i)) { count++; - if (count < CONFIG_SYS_DAVINCI_EMAC_PHY_COUNT) { + if (count <= CONFIG_SYS_DAVINCI_EMAC_PHY_COUNT) { active_phy_addr[j++] = i; } else { printf("%s: to many PHYs detected.\n", @@ -447,8 +491,8 @@ static int davinci_eth_open(struct eth_device *dev, bd_t *bis) /* Create RX queue and set receive process in place */ emac_rx_active_head = emac_rx_desc; for (cnt = 0; cnt < EMAC_MAX_RX_BUFFERS; cnt++) { - rx_desc->next = (u_int32_t)(rx_desc + 1); - rx_desc->buffer = &emac_rx_buffers[cnt * (EMAC_MAX_ETHERNET_PKT_SIZE + EMAC_PKT_ALIGN)]; + rx_desc->next = BD_TO_HW((u_int32_t)(rx_desc + 1)); + rx_desc->buffer = &emac_rx_buffers[cnt * EMAC_RXBUF_SIZE]; rx_desc->buff_off_len = EMAC_MAX_ETHERNET_PKT_SIZE; rx_desc->pkt_flag_len = EMAC_CPPI_OWNERSHIP_BIT; rx_desc++; @@ -460,6 +504,8 @@ static int davinci_eth_open(struct eth_device *dev, bd_t *bis) emac_rx_active_tail = rx_desc; emac_rx_queue_active = 1; + davinci_flush_rx_descs(); + /* Enable TX/RX */ writel(EMAC_MAX_ETHERNET_PKT_SIZE, &adap_emac->RXMAXLEN); writel(0, &adap_emac->RXBUFFEROFFSET); @@ -474,7 +520,8 @@ static int davinci_eth_open(struct eth_device *dev, bd_t *bis) writel(1, &adap_emac->RXUNICASTSET); /* Enable MII interface and Full duplex mode */ -#ifdef CONFIG_SOC_DA8XX +#if defined(CONFIG_SOC_DA8XX) || \ + (defined(CONFIG_OMAP34XX) && defined(CONFIG_DRIVER_TI_EMAC_USE_RMII)) writel((EMAC_MACCONTROL_MIIEN_ENABLE | EMAC_MACCONTROL_FULLDUPLEX_ENABLE | EMAC_MACCONTROL_RMIISPEED_100), @@ -500,7 +547,7 @@ static int davinci_eth_open(struct eth_device *dev, bd_t *bis) emac_gigabit_enable(active_phy_addr[index]); /* Start receive process */ - writel((u_int32_t)emac_rx_desc, &adap_emac->RX0HDP); + writel(BD_TO_HW((u_int32_t)emac_rx_desc), &adap_emac->RX0HDP); debug_emac("- emac_open\n"); @@ -617,8 +664,13 @@ static int davinci_eth_send_packet (struct eth_device *dev, EMAC_CPPI_SOP_BIT | EMAC_CPPI_OWNERSHIP_BIT | EMAC_CPPI_EOP_BIT); + + flush_dcache_range((unsigned long)packet, + (unsigned long)packet + length); + davinci_flush_desc(emac_tx_desc); + /* Send the packet */ - writel((unsigned long)emac_tx_desc, &adap_emac->TX0HDP); + writel(BD_TO_HW((unsigned long)emac_tx_desc), &adap_emac->TX0HDP); /* Wait for packet to complete or link down */ while (1) { @@ -649,6 +701,8 @@ static int davinci_eth_rcv_packet (struct eth_device *dev) volatile emac_desc *tail_desc; int status, ret = -1; + davinci_invalidate_rx_descs(); + rx_curr_desc = emac_rx_active_head; status = rx_curr_desc->pkt_flag_len; if ((rx_curr_desc) && ((status & EMAC_CPPI_OWNERSHIP_BIT) == 0)) { @@ -656,20 +710,23 @@ static int davinci_eth_rcv_packet (struct eth_device *dev) /* Error in packet - discard it and requeue desc */ printf ("WARN: emac_rcv_pkt: Error in packet\n"); } else { + unsigned long tmp = (unsigned long)rx_curr_desc->buffer; + + invalidate_dcache_range(tmp, tmp + EMAC_RXBUF_SIZE); NetReceive (rx_curr_desc->buffer, (rx_curr_desc->buff_off_len & 0xffff)); ret = rx_curr_desc->buff_off_len & 0xffff; } /* Ack received packet descriptor */ - writel((unsigned long)rx_curr_desc, &adap_emac->RX0CP); + writel(BD_TO_HW((ulong)rx_curr_desc), &adap_emac->RX0CP); curr_desc = rx_curr_desc; emac_rx_active_head = - (volatile emac_desc *) rx_curr_desc->next; + (volatile emac_desc *) (HW_TO_BD(rx_curr_desc->next)); if (status & EMAC_CPPI_EOQ_BIT) { if (emac_rx_active_head) { - writel((unsigned long)emac_rx_active_head, + writel(BD_TO_HW((ulong)emac_rx_active_head), &adap_emac->RX0HDP); } else { emac_rx_queue_active = 0; @@ -681,13 +738,14 @@ static int davinci_eth_rcv_packet (struct eth_device *dev) rx_curr_desc->buff_off_len = EMAC_MAX_ETHERNET_PKT_SIZE; rx_curr_desc->pkt_flag_len = EMAC_CPPI_OWNERSHIP_BIT; rx_curr_desc->next = 0; + davinci_flush_desc(rx_curr_desc); if (emac_rx_active_head == 0) { printf ("INFO: emac_rcv_pkt: active queue head = 0\n"); emac_rx_active_head = curr_desc; emac_rx_active_tail = curr_desc; if (emac_rx_queue_active != 0) { - writel((unsigned long)emac_rx_active_head, + writel(BD_TO_HW((ulong)emac_rx_active_head), &adap_emac->RX0HDP); printf ("INFO: emac_rcv_pkt: active queue head = 0, HDP fired\n"); emac_rx_queue_active = 1; @@ -695,14 +753,16 @@ static int davinci_eth_rcv_packet (struct eth_device *dev) } else { tail_desc = emac_rx_active_tail; emac_rx_active_tail = curr_desc; - tail_desc->next = (unsigned int) curr_desc; + tail_desc->next = BD_TO_HW((ulong) curr_desc); status = tail_desc->pkt_flag_len; if (status & EMAC_CPPI_EOQ_BIT) { - writel((unsigned long)curr_desc, + davinci_flush_desc(tail_desc); + writel(BD_TO_HW((ulong)curr_desc), &adap_emac->RX0HDP); status &= ~EMAC_CPPI_EOQ_BIT; tail_desc->pkt_flag_len = status; } + davinci_flush_desc(tail_desc); } return (ret); } @@ -781,6 +841,7 @@ int davinci_emac_initialize(void) phy_id |= tmp & 0x0000ffff; switch (phy_id) { +#ifdef PHY_KSZ8873 case PHY_KSZ8873: sprintf(phy[i].name, "KSZ8873 @ 0x%02x", active_phy_addr[i]); @@ -789,6 +850,8 @@ int davinci_emac_initialize(void) phy[i].get_link_speed = ksz8873_get_link_speed; phy[i].auto_negotiate = ksz8873_auto_negotiate; break; +#endif +#ifdef PHY_LXT972 case PHY_LXT972: sprintf(phy[i].name, "LXT972 @ 0x%02x", active_phy_addr[i]); @@ -797,6 +860,8 @@ int davinci_emac_initialize(void) phy[i].get_link_speed = lxt972_get_link_speed; phy[i].auto_negotiate = lxt972_auto_negotiate; break; +#endif +#ifdef PHY_DP83848 case PHY_DP83848: sprintf(phy[i].name, "DP83848 @ 0x%02x", active_phy_addr[i]); @@ -805,6 +870,8 @@ int davinci_emac_initialize(void) phy[i].get_link_speed = dp83848_get_link_speed; phy[i].auto_negotiate = dp83848_auto_negotiate; break; +#endif +#ifdef PHY_ET1011C case PHY_ET1011C: sprintf(phy[i].name, "ET1011C @ 0x%02x", active_phy_addr[i]); @@ -813,6 +880,7 @@ int davinci_emac_initialize(void) phy[i].get_link_speed = et1011c_get_link_speed; phy[i].auto_negotiate = gen_auto_negotiate; break; +#endif default: sprintf(phy[i].name, "GENERIC @ 0x%02x", active_phy_addr[i]); |