diff options
author | Paul Mackerras <paulus@samba.org> | 2006-12-04 15:59:07 +1100 |
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committer | Paul Mackerras <paulus@samba.org> | 2006-12-04 15:59:07 +1100 |
commit | 79acbb3ff2d8095b692e1502b9eb2ccec348de26 (patch) | |
tree | 6ab773e5a8f9de2cd6443362b21d0d6fffe3b35e /drivers/net/chelsio/mac.c | |
parent | 19a79859e168640f8e16d7b216d211c1c52b687a (diff) | |
parent | 2b5f6dcce5bf94b9b119e9ed8d537098ec61c3d2 (diff) |
Merge branch 'linux-2.6' into for-linus
Diffstat (limited to 'drivers/net/chelsio/mac.c')
-rw-r--r-- | drivers/net/chelsio/mac.c | 368 |
1 files changed, 368 insertions, 0 deletions
diff --git a/drivers/net/chelsio/mac.c b/drivers/net/chelsio/mac.c new file mode 100644 index 00000000000..6af39dc7045 --- /dev/null +++ b/drivers/net/chelsio/mac.c @@ -0,0 +1,368 @@ +/* $Date: 2005/10/22 00:42:59 $ $RCSfile: mac.c,v $ $Revision: 1.32 $ */ +#include "gmac.h" +#include "regs.h" +#include "fpga_defs.h" + +#define MAC_CSR_INTERFACE_GMII 0x0 +#define MAC_CSR_INTERFACE_TBI 0x1 +#define MAC_CSR_INTERFACE_MII 0x2 +#define MAC_CSR_INTERFACE_RMII 0x3 + +/* Chelsio's MAC statistics. */ +struct mac_statistics { + + /* Transmit */ + u32 TxFramesTransmittedOK; + u32 TxReserved1; + u32 TxReserved2; + u32 TxOctetsTransmittedOK; + u32 TxFramesWithDeferredXmissions; + u32 TxLateCollisions; + u32 TxFramesAbortedDueToXSCollisions; + u32 TxFramesLostDueToIntMACXmitError; + u32 TxReserved3; + u32 TxMulticastFrameXmittedOK; + u32 TxBroadcastFramesXmittedOK; + u32 TxFramesWithExcessiveDeferral; + u32 TxPAUSEMACCtrlFramesTransmitted; + + /* Receive */ + u32 RxFramesReceivedOK; + u32 RxFrameCheckSequenceErrors; + u32 RxAlignmentErrors; + u32 RxOctetsReceivedOK; + u32 RxFramesLostDueToIntMACRcvError; + u32 RxMulticastFramesReceivedOK; + u32 RxBroadcastFramesReceivedOK; + u32 RxInRangeLengthErrors; + u32 RxTxOutOfRangeLengthField; + u32 RxFrameTooLongErrors; + u32 RxPAUSEMACCtrlFramesReceived; +}; + +static int static_aPorts[] = { + FPGA_GMAC_INTERRUPT_PORT0, + FPGA_GMAC_INTERRUPT_PORT1, + FPGA_GMAC_INTERRUPT_PORT2, + FPGA_GMAC_INTERRUPT_PORT3 +}; + +struct _cmac_instance { + u32 index; +}; + +static int mac_intr_enable(struct cmac *mac) +{ + u32 mac_intr; + + if (t1_is_asic(mac->adapter)) { + /* ASIC */ + + /* We don't use the on chip MAC for ASIC products. */ + } else { + /* FPGA */ + + /* Set parent gmac interrupt. */ + mac_intr = readl(mac->adapter->regs + A_PL_ENABLE); + mac_intr |= FPGA_PCIX_INTERRUPT_GMAC; + writel(mac_intr, mac->adapter->regs + A_PL_ENABLE); + + mac_intr = readl(mac->adapter->regs + FPGA_GMAC_ADDR_INTERRUPT_ENABLE); + mac_intr |= static_aPorts[mac->instance->index]; + writel(mac_intr, + mac->adapter->regs + FPGA_GMAC_ADDR_INTERRUPT_ENABLE); + } + + return 0; +} + +static int mac_intr_disable(struct cmac *mac) +{ + u32 mac_intr; + + if (t1_is_asic(mac->adapter)) { + /* ASIC */ + + /* We don't use the on chip MAC for ASIC products. */ + } else { + /* FPGA */ + + /* Set parent gmac interrupt. */ + mac_intr = readl(mac->adapter->regs + A_PL_ENABLE); + mac_intr &= ~FPGA_PCIX_INTERRUPT_GMAC; + writel(mac_intr, mac->adapter->regs + A_PL_ENABLE); + + mac_intr = readl(mac->adapter->regs + FPGA_GMAC_ADDR_INTERRUPT_ENABLE); + mac_intr &= ~(static_aPorts[mac->instance->index]); + writel(mac_intr, + mac->adapter->regs + FPGA_GMAC_ADDR_INTERRUPT_ENABLE); + } + + return 0; +} + +static int mac_intr_clear(struct cmac *mac) +{ + u32 mac_intr; + + if (t1_is_asic(mac->adapter)) { + /* ASIC */ + + /* We don't use the on chip MAC for ASIC products. */ + } else { + /* FPGA */ + + /* Set parent gmac interrupt. */ + writel(FPGA_PCIX_INTERRUPT_GMAC, + mac->adapter->regs + A_PL_CAUSE); + mac_intr = readl(mac->adapter->regs + FPGA_GMAC_ADDR_INTERRUPT_CAUSE); + mac_intr |= (static_aPorts[mac->instance->index]); + writel(mac_intr, + mac->adapter->regs + FPGA_GMAC_ADDR_INTERRUPT_CAUSE); + } + + return 0; +} + +static int mac_get_address(struct cmac *mac, u8 addr[6]) +{ + u32 data32_lo, data32_hi; + + data32_lo = readl(mac->adapter->regs + + MAC_REG_IDLO(mac->instance->index)); + data32_hi = readl(mac->adapter->regs + + MAC_REG_IDHI(mac->instance->index)); + + addr[0] = (u8) ((data32_hi >> 8) & 0xFF); + addr[1] = (u8) ((data32_hi) & 0xFF); + addr[2] = (u8) ((data32_lo >> 24) & 0xFF); + addr[3] = (u8) ((data32_lo >> 16) & 0xFF); + addr[4] = (u8) ((data32_lo >> 8) & 0xFF); + addr[5] = (u8) ((data32_lo) & 0xFF); + return 0; +} + +static int mac_reset(struct cmac *mac) +{ + u32 data32; + int mac_in_reset, time_out = 100; + int idx = mac->instance->index; + + data32 = readl(mac->adapter->regs + MAC_REG_CSR(idx)); + writel(data32 | F_MAC_RESET, + mac->adapter->regs + MAC_REG_CSR(idx)); + + do { + data32 = readl(mac->adapter->regs + MAC_REG_CSR(idx)); + + mac_in_reset = data32 & F_MAC_RESET; + if (mac_in_reset) + udelay(1); + } while (mac_in_reset && --time_out); + + if (mac_in_reset) { + CH_ERR("%s: MAC %d reset timed out\n", + mac->adapter->name, idx); + return 2; + } + + return 0; +} + +static int mac_set_rx_mode(struct cmac *mac, struct t1_rx_mode *rm) +{ + u32 val; + + val = readl(mac->adapter->regs + + MAC_REG_CSR(mac->instance->index)); + val &= ~(F_MAC_PROMISC | F_MAC_MC_ENABLE); + val |= V_MAC_PROMISC(t1_rx_mode_promisc(rm) != 0); + val |= V_MAC_MC_ENABLE(t1_rx_mode_allmulti(rm) != 0); + writel(val, + mac->adapter->regs + MAC_REG_CSR(mac->instance->index)); + + return 0; +} + +static int mac_set_speed_duplex_fc(struct cmac *mac, int speed, int duplex, + int fc) +{ + u32 data32; + + data32 = readl(mac->adapter->regs + + MAC_REG_CSR(mac->instance->index)); + data32 &= ~(F_MAC_HALF_DUPLEX | V_MAC_SPEED(M_MAC_SPEED) | + V_INTERFACE(M_INTERFACE) | F_MAC_TX_PAUSE_ENABLE | + F_MAC_RX_PAUSE_ENABLE); + + switch (speed) { + case SPEED_10: + case SPEED_100: + data32 |= V_INTERFACE(MAC_CSR_INTERFACE_MII); + data32 |= V_MAC_SPEED(speed == SPEED_10 ? 0 : 1); + break; + case SPEED_1000: + data32 |= V_INTERFACE(MAC_CSR_INTERFACE_GMII); + data32 |= V_MAC_SPEED(2); + break; + } + + if (duplex >= 0) + data32 |= V_MAC_HALF_DUPLEX(duplex == DUPLEX_HALF); + + if (fc >= 0) { + data32 |= V_MAC_RX_PAUSE_ENABLE((fc & PAUSE_RX) != 0); + data32 |= V_MAC_TX_PAUSE_ENABLE((fc & PAUSE_TX) != 0); + } + + writel(data32, + mac->adapter->regs + MAC_REG_CSR(mac->instance->index)); + return 0; +} + +static int mac_enable(struct cmac *mac, int which) +{ + u32 val; + + val = readl(mac->adapter->regs + + MAC_REG_CSR(mac->instance->index)); + if (which & MAC_DIRECTION_RX) + val |= F_MAC_RX_ENABLE; + if (which & MAC_DIRECTION_TX) + val |= F_MAC_TX_ENABLE; + writel(val, + mac->adapter->regs + MAC_REG_CSR(mac->instance->index)); + return 0; +} + +static int mac_disable(struct cmac *mac, int which) +{ + u32 val; + + val = readl(mac->adapter->regs + + MAC_REG_CSR(mac->instance->index)); + if (which & MAC_DIRECTION_RX) + val &= ~F_MAC_RX_ENABLE; + if (which & MAC_DIRECTION_TX) + val &= ~F_MAC_TX_ENABLE; + writel(val, + mac->adapter->regs + MAC_REG_CSR(mac->instance->index)); + return 0; +} + +#if 0 +static int mac_set_ifs(struct cmac *mac, u32 mode) +{ + t1_write_reg_4(mac->adapter, + MAC_REG_IFS(mac->instance->index), + mode); + return 0; +} + +static int mac_enable_isl(struct cmac *mac) +{ + u32 data32 = readl(mac->adapter->regs + + MAC_REG_CSR(mac->instance->index)); + data32 |= F_MAC_RX_ENABLE | F_MAC_TX_ENABLE; + t1_write_reg_4(mac->adapter, + MAC_REG_CSR(mac->instance->index), + data32); + return 0; +} +#endif + +static int mac_set_mtu(struct cmac *mac, int mtu) +{ + if (mtu > 9600) + return -EINVAL; + writel(mtu + ETH_HLEN + VLAN_HLEN, + mac->adapter->regs + MAC_REG_LARGEFRAMELENGTH(mac->instance->index)); + + return 0; +} + +static const struct cmac_statistics *mac_update_statistics(struct cmac *mac, + int flag) +{ + struct mac_statistics st; + u32 *p = (u32 *) & st, i; + + writel(0, + mac->adapter->regs + MAC_REG_RMCNT(mac->instance->index)); + + for (i = 0; i < sizeof(st) / sizeof(u32); i++) + *p++ = readl(mac->adapter->regs + + MAC_REG_RMDATA(mac->instance->index)); + + /* XXX convert stats */ + return &mac->stats; +} + +static void mac_destroy(struct cmac *mac) +{ + kfree(mac); +} + +static struct cmac_ops chelsio_mac_ops = { + .destroy = mac_destroy, + .reset = mac_reset, + .interrupt_enable = mac_intr_enable, + .interrupt_disable = mac_intr_disable, + .interrupt_clear = mac_intr_clear, + .enable = mac_enable, + .disable = mac_disable, + .set_mtu = mac_set_mtu, + .set_rx_mode = mac_set_rx_mode, + .set_speed_duplex_fc = mac_set_speed_duplex_fc, + .macaddress_get = mac_get_address, + .statistics_update = mac_update_statistics, +}; + +static struct cmac *mac_create(adapter_t *adapter, int index) +{ + struct cmac *mac; + u32 data32; + + if (index >= 4) + return NULL; + + mac = kzalloc(sizeof(*mac) + sizeof(cmac_instance), GFP_KERNEL); + if (!mac) + return NULL; + + mac->ops = &chelsio_mac_ops; + mac->instance = (cmac_instance *) (mac + 1); + + mac->instance->index = index; + mac->adapter = adapter; + + data32 = readl(adapter->regs + MAC_REG_CSR(mac->instance->index)); + data32 &= ~(F_MAC_RESET | F_MAC_PROMISC | F_MAC_PROMISC | + F_MAC_LB_ENABLE | F_MAC_RX_ENABLE | F_MAC_TX_ENABLE); + data32 |= F_MAC_JUMBO_ENABLE; + writel(data32, adapter->regs + MAC_REG_CSR(mac->instance->index)); + + /* Initialize the random backoff seed. */ + data32 = 0x55aa + (3 * index); + writel(data32, + adapter->regs + MAC_REG_GMRANDBACKOFFSEED(mac->instance->index)); + + /* Check to see if the mac address needs to be set manually. */ + data32 = readl(adapter->regs + MAC_REG_IDLO(mac->instance->index)); + if (data32 == 0 || data32 == 0xffffffff) { + /* + * Add a default MAC address if we can't read one. + */ + writel(0x43FFFFFF - index, + adapter->regs + MAC_REG_IDLO(mac->instance->index)); + writel(0x0007, + adapter->regs + MAC_REG_IDHI(mac->instance->index)); + } + + (void) mac_set_mtu(mac, 1500); + return mac; +} + +struct gmac t1_chelsio_mac_ops = { + .create = mac_create +}; 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