Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755870AbWKQU0G (ORCPT ); Fri, 17 Nov 2006 15:26:06 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1755871AbWKQU0G (ORCPT ); Fri, 17 Nov 2006 15:26:06 -0500 Received: from stargate.chelsio.com ([12.22.49.110]:33044 "EHLO stargate.chelsio.com") by vger.kernel.org with ESMTP id S1755703AbWKQUZ7 (ORCPT ); Fri, 17 Nov 2006 15:25:59 -0500 Date: Fri, 17 Nov 2006 12:24:12 -0800 From: divy@chelsio.com Message-Id: <200611172024.kAHKOCoI025902@colfax2.asicdesigners.com> To: jeff@garzik.org Subject: [PATCH 3/10] cxgb3 - HW access routines - part 1 Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 60202 Lines: 1899 From: Divy Le Ray This patch implements the HW access routines for the Chelsio T3 network adapter's driver. This patch is split. This is the first part. Signed-off-by: Divy Le Ray --- drivers/net/cxgb3/t3_hw.c | 3288 +++++++++++++++++++++++++++++++++++++++++++++ 1 files changed, 3288 insertions(+), 0 deletions(-) diff --git a/drivers/net/cxgb3/t3_hw.c b/drivers/net/cxgb3/t3_hw.c new file mode 100644 index 0000000..445e804 --- /dev/null +++ b/drivers/net/cxgb3/t3_hw.c @@ -0,0 +1,3288 @@ +/* + * This file is part of the Chelsio T3 Ethernet driver. + * + * Copyright (C) 2003-2006 Chelsio Communications. All rights reserved. + * + * This program is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the LICENSE file included in this + * release for licensing terms and conditions. + */ + +#include "common.h" +#include "regs.h" +#include "sge_defs.h" +#include "firmware_exports.h" + +/** + * t3_wait_op_done - wait until an operation is completed + * @adapter: the adapter performing the operation + * @reg: the register to check for completion + * @mask: a single-bit field within @reg that indicates completion + * @polarity: the value of the field when the operation is completed + * @attempts: number of check iterations + * @delay: delay in usecs between iterations + * + * Wait until an operation is completed by checking a bit in a register + * up to @attempts times. Returns 0 if the operation completes and 1 + * otherwise. + */ +int t3_wait_op_done(adapter_t *adapter, int reg, u32 mask, int polarity, + int attempts, int delay) +{ + while (1) { + u32 val = t3_read_reg(adapter, reg) & mask; + + if (!!val == polarity) + return 0; + if (--attempts == 0) + return -EAGAIN; + if (delay) + udelay(delay); + } +} + +/** + * t3_write_regs - write a bunch of registers + * @adapter: the adapter to program + * @p: an array of register address/register value pairs + * @n: the number of address/value pairs + * @offset: register address offset + * + * Takes an array of register address/register value pairs and writes each + * value to the corresponding register. Register addresses are adjusted + * by the supplied offset. + */ +void t3_write_regs(adapter_t *adapter, const struct addr_val_pair *p, int n, + unsigned int offset) +{ + while (n--) { + t3_write_reg(adapter, p->reg_addr + offset, p->val); + p++; + } +} + +/** + * t3_set_reg_field - set a register field to a value + * @adapter: the adapter to program + * @addr: the register address + * @mask: specifies the portion of the register to modify + * @val: the new value for the register field + * + * Sets a register field specified by the supplied mask to the + * given value. + */ +void t3_set_reg_field(adapter_t *adapter, unsigned int addr, u32 mask, u32 val) +{ + u32 v = t3_read_reg(adapter, addr) & ~mask; + + t3_write_reg(adapter, addr, v | val); + (void) t3_read_reg(adapter, addr); /* flush */ +} + +/** + * t3_read_indirect - read indirectly addressed registers + * @adap: the adapter + * @addr_reg: register holding the indirect address + * @data_reg: register holding the value of the indirect register + * @vals: where the read register values are stored + * @start_idx: index of first indirect register to read + * @nregs: how many indirect registers to read + * + * Reads registers that are accessed indirectly through an address/data + * register pair. + */ +void t3_read_indirect(adapter_t *adap, unsigned int addr_reg, + unsigned int data_reg, u32 *vals, unsigned int nregs, + unsigned int start_idx) +{ + while (nregs--) { + t3_write_reg(adap, addr_reg, start_idx); + *vals++ = t3_read_reg(adap, data_reg); + start_idx++; + } +} + +/** + * t3_mc7_bd_read - read from MC7 through backdoor accesses + * @mc7: identifies MC7 to read from + * @start: index of first 64-bit word to read + * @n: number of 64-bit words to read + * @buf: where to store the read result + * + * Read n 64-bit words from MC7 starting at word start, using backdoor + * accesses. + */ +int t3_mc7_bd_read(struct mc7 *mc7, unsigned int start, unsigned int n, + u64 *buf) +{ + static int shift[] = { 0, 0, 16, 24 }; + static int step[] = { 0, 32, 16, 8 }; + + unsigned int size64 = mc7->size / 8; /* # of 64-bit words */ + adapter_t *adap = mc7->adapter; + + if (start >= size64 || start + n > size64) + return -EINVAL; + + start *= (8 << mc7->width); + while (n--) { + int i; + u64 val64 = 0; + + for (i = (1 << mc7->width) - 1; i >= 0; --i) { + int attempts = 10; + u32 val; + + t3_write_reg(adap, mc7->offset + A_MC7_BD_ADDR, + start); + t3_write_reg(adap, mc7->offset + A_MC7_BD_OP, 0); + val = t3_read_reg(adap, mc7->offset + A_MC7_BD_OP); + while ((val & F_BUSY) && attempts--) + val = t3_read_reg(adap, + mc7->offset + A_MC7_BD_OP); + if (val & F_BUSY) + return -EIO; + + val = t3_read_reg(adap, mc7->offset + A_MC7_BD_DATA1); + if (mc7->width == 0) { + val64 = t3_read_reg(adap, + mc7->offset + A_MC7_BD_DATA0); + val64 |= (u64)val << 32; + } else { + if (mc7->width > 1) + val >>= shift[mc7->width]; + val64 |= (u64)val << (step[mc7->width] * i); + } + start += 8; + } + *buf++ = val64; + } + return 0; +} + +/* + * Initialize MI1. + */ +static void mi1_init(adapter_t *adap, const struct adapter_info *ai) +{ + u32 clkdiv = adap->params.vpd.cclk / (2 * adap->params.vpd.mdc) - 1; + u32 val = F_PREEN | V_MDIINV(ai->mdiinv) | V_MDIEN(ai->mdien) | + V_CLKDIV(clkdiv); + + if (!(ai->caps & SUPPORTED_10000baseT_Full)) + val |= V_ST(1); + t3_write_reg(adap, A_MI1_CFG, val); +} + +#define MDIO_ATTEMPTS 10 + +/* + * MI1 read/write operations for direct-addressed PHYs. + */ +static int mi1_read(adapter_t *adapter, int phy_addr, int mmd_addr, + int reg_addr, unsigned int *valp) +{ + int ret; + u32 addr = V_REGADDR(reg_addr) | V_PHYADDR(phy_addr); + + if (mmd_addr) + return -EINVAL; + + MDIO_LOCK(adapter); + t3_write_reg(adapter, A_MI1_ADDR, addr); + t3_write_reg(adapter, A_MI1_OP, V_MDI_OP(2)); + ret = t3_wait_op_done(adapter, A_MI1_OP, F_BUSY, 0, MDIO_ATTEMPTS, 20); + if (!ret) + *valp = t3_read_reg(adapter, A_MI1_DATA); + MDIO_UNLOCK(adapter); + return ret; +} + +static int mi1_write(adapter_t *adapter, int phy_addr, int mmd_addr, + int reg_addr, unsigned int val) +{ + int ret; + u32 addr = V_REGADDR(reg_addr) | V_PHYADDR(phy_addr); + + if (mmd_addr) + return -EINVAL; + + MDIO_LOCK(adapter); + t3_write_reg(adapter, A_MI1_ADDR, addr); + t3_write_reg(adapter, A_MI1_DATA, val); + t3_write_reg(adapter, A_MI1_OP, V_MDI_OP(1)); + ret = t3_wait_op_done(adapter, A_MI1_OP, F_BUSY, 0, MDIO_ATTEMPTS, 20); + MDIO_UNLOCK(adapter); + return ret; +} + +static struct mdio_ops mi1_mdio_ops = { + mi1_read, + mi1_write +}; + +/* + * MI1 read/write operations for indirect-addressed PHYs. + */ +static int mi1_ext_read(adapter_t *adapter, int phy_addr, int mmd_addr, + int reg_addr, unsigned int *valp) +{ + int ret; + u32 addr = V_REGADDR(mmd_addr) | V_PHYADDR(phy_addr); + + MDIO_LOCK(adapter); + t3_write_reg(adapter, A_MI1_ADDR, addr); + t3_write_reg(adapter, A_MI1_DATA, reg_addr); + t3_write_reg(adapter, A_MI1_OP, V_MDI_OP(0)); + ret = t3_wait_op_done(adapter, A_MI1_OP, F_BUSY, 0, MDIO_ATTEMPTS, 20); + if (!ret) { + t3_write_reg(adapter, A_MI1_OP, V_MDI_OP(3)); + ret = t3_wait_op_done(adapter, A_MI1_OP, F_BUSY, 0, + MDIO_ATTEMPTS, 20); + if (!ret) + *valp = t3_read_reg(adapter, A_MI1_DATA); + } + MDIO_UNLOCK(adapter); + return ret; +} + +static int mi1_ext_write(adapter_t *adapter, int phy_addr, int mmd_addr, + int reg_addr, unsigned int val) +{ + int ret; + u32 addr = V_REGADDR(mmd_addr) | V_PHYADDR(phy_addr); + + MDIO_LOCK(adapter); + t3_write_reg(adapter, A_MI1_ADDR, addr); + t3_write_reg(adapter, A_MI1_DATA, reg_addr); + t3_write_reg(adapter, A_MI1_OP, V_MDI_OP(0)); + ret = t3_wait_op_done(adapter, A_MI1_OP, F_BUSY, 0, MDIO_ATTEMPTS, 20); + if (!ret) { + t3_write_reg(adapter, A_MI1_DATA, val); + t3_write_reg(adapter, A_MI1_OP, V_MDI_OP(1)); + ret = t3_wait_op_done(adapter, A_MI1_OP, F_BUSY, 0, + MDIO_ATTEMPTS, 20); + } + MDIO_UNLOCK(adapter); + return ret; +} + +static struct mdio_ops mi1_mdio_ext_ops = { + mi1_ext_read, + mi1_ext_write +}; + +/** + * t3_mdio_change_bits - modify the value of a PHY register + * @phy: the PHY to operate on + * @mmd: the device address + * @reg: the register address + * @clear: what part of the register value to mask off + * @set: what part of the register value to set + * + * Changes the value of a PHY register by applying a mask to its current + * value and ORing the result with a new value. + */ +int t3_mdio_change_bits(struct cphy *phy, int mmd, int reg, unsigned int clear, + unsigned int set) +{ + int ret; + unsigned int val; + + ret = mdio_read(phy, mmd, reg, &val); + if (!ret) { + val &= ~clear; + ret = mdio_write(phy, mmd, reg, val | set); + } + return ret; +} + +/** + * t3_phy_reset - reset a PHY block + * @phy: the PHY to operate on + * @mmd: the device address of the PHY block to reset + * @wait: how long to wait for the reset to complete in 1ms increments + * + * Resets a PHY block and optionally waits for the reset to complete. + * @mmd should be 0 for 10/100/1000 PHYs and the device address to reset + * for 10G PHYs. + */ +int t3_phy_reset(struct cphy *phy, int mmd, int wait) +{ + int err; + unsigned int ctl; + + err = t3_mdio_change_bits(phy, mmd, MII_BMCR, BMCR_PDOWN, BMCR_RESET); + if (err || !wait) + return err; + + do { + err = mdio_read(phy, mmd, MII_BMCR, &ctl); + if (err) + return err; + ctl &= BMCR_RESET; + if (ctl) + msleep(1); + } while (ctl && --wait); + + return ctl ? -1 : 0; +} + +/** + * t3_phy_advertise - set the PHY advertisement registers for autoneg + * @phy: the PHY to operate on + * @advert: bitmap of capabilities the PHY should advertise + * + * Sets a 10/100/1000 PHY's advertisement registers to advertise the + * requested capabilities. + */ +int t3_phy_advertise(struct cphy *phy, unsigned int advert) +{ + int err; + unsigned int val = 0; + + err = mdio_read(phy, 0, MII_CTRL1000, &val); + if (err) + return err; + + val &= ~(ADVERTISE_1000HALF | ADVERTISE_1000FULL); + if (advert & ADVERTISED_1000baseT_Half) + val |= ADVERTISE_1000HALF; + if (advert & ADVERTISED_1000baseT_Full) + val |= ADVERTISE_1000FULL; + + err = mdio_write(phy, 0, MII_CTRL1000, val); + if (err) + return err; + + val = 1; + if (advert & ADVERTISED_10baseT_Half) + val |= ADVERTISE_10HALF; + if (advert & ADVERTISED_10baseT_Full) + val |= ADVERTISE_10FULL; + if (advert & ADVERTISED_100baseT_Half) + val |= ADVERTISE_100HALF; + if (advert & ADVERTISED_100baseT_Full) + val |= ADVERTISE_100FULL; + if (advert & ADVERTISED_Pause) + val |= ADVERTISE_PAUSE_CAP; + if (advert & ADVERTISED_Asym_Pause) + val |= ADVERTISE_PAUSE_ASYM; + return mdio_write(phy, 0, MII_ADVERTISE, val); +} + +/** + * t3_set_phy_speed_duplex - force PHY speed and duplex + * @phy: the PHY to operate on + * @speed: requested PHY speed + * @duplex: requested PHY duplex + * + * Force a 10/100/1000 PHY's speed and duplex. This also disables + * auto-negotiation except for GigE, where auto-negotiation is mandatory. + */ +int t3_set_phy_speed_duplex(struct cphy *phy, int speed, int duplex) +{ + int err; + unsigned int ctl; + + err = mdio_read(phy, 0, MII_BMCR, &ctl); + if (err) + return err; + + if (speed >= 0) { + ctl &= ~(BMCR_SPEED100 | BMCR_SPEED1000 | BMCR_ANENABLE); + if (speed == SPEED_100) + ctl |= BMCR_SPEED100; + else if (speed == SPEED_1000) + ctl |= BMCR_SPEED1000; + } + if (duplex >= 0) { + ctl &= ~(BMCR_FULLDPLX | BMCR_ANENABLE); + if (duplex == DUPLEX_FULL) + ctl |= BMCR_FULLDPLX; + } + if (ctl & BMCR_SPEED1000) /* auto-negotiation required for GigE */ + ctl |= BMCR_ANENABLE; + return mdio_write(phy, 0, MII_BMCR, ctl); +} + +static struct adapter_info t3_adap_info[] = { + { 2, 0, 0, 0, + F_GPIO2_OEN | F_GPIO4_OEN | + F_GPIO2_OUT_VAL | F_GPIO4_OUT_VAL, F_GPIO3 | F_GPIO5, + SUPPORTED_OFFLOAD, + &mi1_mdio_ops, "Chelsio PE9000" }, + { 2, 0, 0, 0, + F_GPIO2_OEN | F_GPIO4_OEN | + F_GPIO2_OUT_VAL | F_GPIO4_OUT_VAL, F_GPIO3 | F_GPIO5, + SUPPORTED_OFFLOAD, + &mi1_mdio_ops, "Chelsio T302" }, + { 1, 0, 0, 0, + F_GPIO1_OEN | F_GPIO6_OEN | F_GPIO7_OEN | + F_GPIO1_OUT_VAL | F_GPIO6_OUT_VAL, 0, + SUPPORTED_10000baseT_Full | SUPPORTED_AUI | SUPPORTED_OFFLOAD, + &mi1_mdio_ext_ops, "Chelsio T310" }, + { 2, 0, 0, 0, + F_GPIO1_OEN | F_GPIO2_OEN | F_GPIO4_OEN | F_GPIO5_OEN | F_GPIO6_OEN | + F_GPIO7_OEN | F_GPIO10_OEN | F_GPIO11_OEN | F_GPIO1_OUT_VAL | + F_GPIO5_OUT_VAL | F_GPIO6_OUT_VAL | F_GPIO10_OUT_VAL, 0, + SUPPORTED_10000baseT_Full | SUPPORTED_AUI | SUPPORTED_OFFLOAD, + &mi1_mdio_ext_ops, "Chelsio T320" }, +}; + +/* + * Return the adapter_info structure with a given index. Out-of-range indices + * return NULL. + */ +const struct adapter_info *t3_get_adapter_info(unsigned int id) +{ + return id < ARRAY_SIZE(t3_adap_info) ? &t3_adap_info[id] : NULL; +} + +#define CAPS_1G (SUPPORTED_10baseT_Full | SUPPORTED_100baseT_Full | \ + SUPPORTED_1000baseT_Full | SUPPORTED_Autoneg | SUPPORTED_MII) +#define CAPS_10G (SUPPORTED_10000baseT_Full | SUPPORTED_AUI) + +static struct port_type_info port_types[] = { + { NULL }, + { t3_ael1002_phy_prep, CAPS_10G | SUPPORTED_FIBRE, + "10GBASE-XR" }, + { t3_vsc8211_phy_prep, CAPS_1G | SUPPORTED_TP | SUPPORTED_IRQ, + "10/100/1000BASE-T" }, + { NULL, CAPS_1G | SUPPORTED_TP | SUPPORTED_IRQ, + "10/100/1000BASE-T" }, + { t3_xaui_direct_phy_prep, CAPS_10G | SUPPORTED_TP, "10GBASE-CX4" }, + { NULL, CAPS_10G, "10GBASE-KX4" }, + { t3_qt2045_phy_prep, CAPS_10G | SUPPORTED_TP, "10GBASE-CX4" }, + { t3_ael1006_phy_prep, CAPS_10G | SUPPORTED_FIBRE, + "10GBASE-SR" }, + { NULL, CAPS_10G | SUPPORTED_TP, "10GBASE-CX4" }, +}; + +#undef CAPS_1G +#undef CAPS_10G + +#define VPD_ENTRY(name, len) \ + u8 name##_kword[2]; u8 name##_len; u8 name##_data[len] + +/* + * Partial EEPROM Vital Product Data structure. Includes only the ID and + * VPD-R sections. + */ +struct t3_vpd { + u8 id_tag; + u8 id_len[2]; + u8 id_data[16]; + u8 vpdr_tag; + u8 vpdr_len[2]; + VPD_ENTRY(pn, 16); /* part number */ + VPD_ENTRY(ec, 16); /* EC level */ + VPD_ENTRY(sn, 16); /* serial number */ + VPD_ENTRY(na, 12); /* MAC address base */ + VPD_ENTRY(cclk, 6); /* core clock */ + VPD_ENTRY(mclk, 6); /* mem clock */ + VPD_ENTRY(uclk, 6); /* uP clk */ + VPD_ENTRY(mdc, 6); /* MDIO clk */ + VPD_ENTRY(mt, 2); /* mem timing */ + VPD_ENTRY(xaui0cfg, 6); /* XAUI0 config */ + VPD_ENTRY(xaui1cfg, 6); /* XAUI1 config */ + VPD_ENTRY(port0, 2); /* PHY0 complex */ + VPD_ENTRY(port1, 2); /* PHY1 complex */ + VPD_ENTRY(port2, 2); /* PHY2 complex */ + VPD_ENTRY(port3, 2); /* PHY3 complex */ + VPD_ENTRY(rv, 1); /* csum */ + u32 pad; /* for multiple-of-4 sizing and alignment */ +}; + +#define EEPROM_MAX_POLL 4 +#define EEPROM_STAT_ADDR 0x4000 +#define VPD_BASE 0xc00 + +/** + * t3_seeprom_read - read a VPD EEPROM location + * @adapter: adapter to read + * @addr: EEPROM address + * @data: where to store the read data + * + * Read a 32-bit word from a location in VPD EEPROM using the card's PCI + * VPD ROM capability. A zero is written to the flag bit when the + * addres is written to the control register. The hardware device will + * set the flag to 1 when 4 bytes have been read into the data register. + */ +int t3_seeprom_read(adapter_t *adapter, u32 addr, u32 *data) +{ + u16 val; + int attempts = EEPROM_MAX_POLL; + unsigned int base = adapter->params.pci.vpd_cap_addr; + + if ((addr >= EEPROMSIZE && addr != EEPROM_STAT_ADDR) || (addr & 3)) + return -EINVAL; + + t3_os_pci_write_config_2(adapter, base + PCI_VPD_ADDR, (u16)addr); + do { + udelay(10); + t3_os_pci_read_config_2(adapter, base + PCI_VPD_ADDR, &val); + } while (!(val & PCI_VPD_ADDR_F) && --attempts); + + if (!(val & PCI_VPD_ADDR_F)) { + CH_ERR("%s: reading EEPROM address 0x%x failed\n", + adapter_name(adapter), addr); + return -EIO; + } + t3_os_pci_read_config_4(adapter, base + PCI_VPD_DATA, data); + *data = le32_to_cpu(*data); + return 0; +} + +/** + * t3_seeprom_write - write a VPD EEPROM location + * @adapter: adapter to write + * @addr: EEPROM address + * @data: value to write + * + * Write a 32-bit word to a location in VPD EEPROM using the card's PCI + * VPD ROM capability. + */ +int t3_seeprom_write(adapter_t *adapter, u32 addr, u32 data) +{ + u16 val; + int attempts = EEPROM_MAX_POLL; + unsigned int base = adapter->params.pci.vpd_cap_addr; + + if ((addr >= EEPROMSIZE && addr != EEPROM_STAT_ADDR) || (addr & 3)) + return -EINVAL; + + t3_os_pci_write_config_4(adapter, base + PCI_VPD_DATA, + cpu_to_le32(data)); + t3_os_pci_write_config_2(adapter, base + PCI_VPD_ADDR, + (u16)addr | PCI_VPD_ADDR_F); + do { + msleep(1); + t3_os_pci_read_config_2(adapter, base + PCI_VPD_ADDR, &val); + } while ((val & PCI_VPD_ADDR_F) && --attempts); + + if (val & PCI_VPD_ADDR_F) { + CH_ERR("%s: write to EEPROM address 0x%x failed\n", + adapter_name(adapter), addr); + return -EIO; + } + return 0; +} + +/** + * t3_seeprom_wp - enable/disable EEPROM write protection + * @adapter: the adapter + * @enable: 1 to enable write protection, 0 to disable it + * + * Enables or disables write protection on the serial EEPROM. + */ +int t3_seeprom_wp(adapter_t *adapter, int enable) +{ + return t3_seeprom_write(adapter, EEPROM_STAT_ADDR, enable ? 0xc : 0); +} + +/* + * Convert a character holding a hex digit to a number. + */ +static unsigned int hex2int(unsigned char c) +{ + return isdigit(c) ? c - '0' : toupper(c) - 'A' + 10; +} + +/** + * get_vpd_params - read VPD parameters from VPD EEPROM + * @adapter: adapter to read + * @p: where to store the parameters + * + * Reads card parameters stored in VPD EEPROM. + */ +static int get_vpd_params(adapter_t *adapter, struct vpd_params *p) +{ + int i, addr, ret; + struct t3_vpd vpd; + + /* + * Card information is normally at VPD_BASE but some early cards had + * it at 0. + */ + ret = t3_seeprom_read(adapter, VPD_BASE, (u32 *)&vpd); + if (ret) + return ret; + addr = vpd.id_tag == 0x82 ? VPD_BASE : 0; + + for (i = 0; i < sizeof(vpd); i += 4) { + ret = t3_seeprom_read(adapter, addr + i, + (u32 *)((u8 *)&vpd + i)); + if (ret) + return ret; + } + + p->cclk = simple_strtoul(vpd.cclk_data, NULL, 10); + p->mclk = simple_strtoul(vpd.mclk_data, NULL, 10); + p->uclk = simple_strtoul(vpd.uclk_data, NULL, 10); + p->mdc = simple_strtoul(vpd.mdc_data, NULL, 10); + p->mem_timing = simple_strtoul(vpd.mt_data, NULL, 10); + + /* Old eeproms didn't have port information */ + if (adapter->params.rev == 0 && !vpd.port0_data[0]) { + p->port_type[0] = uses_xaui(adapter) ? 1 : 2; + p->port_type[1] = uses_xaui(adapter) ? 6 : 2; + } else { + p->port_type[0] = (u8)hex2int(vpd.port0_data[0]); + p->port_type[1] = (u8)hex2int(vpd.port1_data[0]); + p->xauicfg[0] = simple_strtoul(vpd.xaui0cfg_data, NULL, 16); + p->xauicfg[1] = simple_strtoul(vpd.xaui1cfg_data, NULL, 16); + } + + for (i = 0; i < 6; i++) + p->eth_base[i] = hex2int(vpd.na_data[2 * i]) * 16 + + hex2int(vpd.na_data[2 * i + 1]); + return 0; +} + +/* serial flash and firmware constants */ +enum { + SF_ATTEMPTS = 5, /* max retries for SF1 operations */ + SF_SEC_SIZE = 64 * 1024, /* serial flash sector size */ + SF_SIZE = SF_SEC_SIZE * 8, /* serial flash size */ + + /* flash command opcodes */ + SF_PROG_PAGE = 2, /* program page */ + SF_WR_DISABLE = 4, /* disable writes */ + SF_RD_STATUS = 5, /* read status register */ + SF_WR_ENABLE = 6, /* enable writes */ + SF_RD_DATA_FAST = 0xb, /* read flash */ + SF_ERASE_SECTOR = 0xd8, /* erase sector */ + + FW_FLASH_BOOT_ADDR = 0x70000, /* start address of FW in flash */ + FW_VERS_ADDR = 0x77ffc /* flash address holding FW version */ +}; + +/** + * sf1_read - read data from the serial flash + * @adapter: the adapter + * @byte_cnt: number of bytes to read + * @cont: whether another operation will be chained + * @valp: where to store the read data + * + * Reads up to 4 bytes of data from the serial flash. The location of + * the read needs to be specified prior to calling this by issuing the + * appropriate commands to the serial flash. + */ +static int sf1_read(adapter_t *adapter, unsigned int byte_cnt, int cont, + u32 *valp) +{ + int ret; + + if (!byte_cnt || byte_cnt > 4) + return -EINVAL; + if (t3_read_reg(adapter, A_SF_OP) & F_BUSY) + return -EBUSY; + t3_write_reg(adapter, A_SF_OP, V_CONT(cont) | V_BYTECNT(byte_cnt - 1)); + ret = t3_wait_op_done(adapter, A_SF_OP, F_BUSY, 0, SF_ATTEMPTS, 10); + if (!ret) + *valp = t3_read_reg(adapter, A_SF_DATA); + return ret; +} + +/** + * sf1_write - write data to the serial flash + * @adapter: the adapter + * @byte_cnt: number of bytes to write + * @cont: whether another operation will be chained + * @val: value to write + * + * Writes up to 4 bytes of data to the serial flash. The location of + * the write needs to be specified prior to calling this by issuing the + * appropriate commands to the serial flash. + */ +static int sf1_write(adapter_t *adapter, unsigned int byte_cnt, int cont, + u32 val) +{ + if (!byte_cnt || byte_cnt > 4) + return -EINVAL; + if (t3_read_reg(adapter, A_SF_OP) & F_BUSY) + return -EBUSY; + t3_write_reg(adapter, A_SF_DATA, val); + t3_write_reg(adapter, A_SF_OP, + V_CONT(cont) | V_BYTECNT(byte_cnt - 1) | V_OP(1)); + return t3_wait_op_done(adapter, A_SF_OP, F_BUSY, 0, SF_ATTEMPTS, 10); +} + +/** + * flash_wait_op - wait for a flash operation to complete + * @adapter: the adapter + * @attempts: max number of polls of the status register + * @delay: delay between polls in ms + * + * Wait for a flash operation to complete by polling the status register. + */ +static int flash_wait_op(adapter_t *adapter, int attempts, int delay) +{ + int ret; + u32 status; + + while (1) { + if ((ret = sf1_write(adapter, 1, 1, SF_RD_STATUS)) != 0 || + (ret = sf1_read(adapter, 1, 0, &status)) != 0) + return ret; + if (!(status & 1)) + return 0; + if (--attempts == 0) + return -EAGAIN; + if (delay) + msleep(delay); + } +} + +/** + * t3_read_flash - read words from serial flash + * @adapter: the adapter + * @addr: the start address for the read + * @nwords: how many 32-bit words to read + * @data: where to store the read data + * @byte_oriented: whether to store data as bytes or as words + * + * Read the specified number of 32-bit words from the serial flash. + * If @byte_oriented is set the read data is stored as a byte array + * (i.e., big-endian), otherwise as 32-bit words in the platform's + * natural endianess. + */ +int t3_read_flash(adapter_t *adapter, unsigned int addr, unsigned int nwords, + u32 *data, int byte_oriented) +{ + int ret; + + if (addr + nwords * sizeof(u32) > SF_SIZE || (addr & 3)) + return -EINVAL; + + addr = swab32(addr) | SF_RD_DATA_FAST; + + if ((ret = sf1_write(adapter, 4, 1, addr)) != 0 || + (ret = sf1_read(adapter, 1, 1, data)) != 0) + return ret; + + for ( ; nwords; nwords--, data++) { + ret = sf1_read(adapter, 4, nwords > 1, data); + if (ret) + return ret; + if (byte_oriented) + *data = htonl(*data); + } + return 0; +} + +/** + * t3_write_flash - write up to a page of data to the serial flash + * @adapter: the adapter + * @addr: the start address to write + * @n: length of data to write + * @data: the data to write + * + * Writes up to a page of data (256 bytes) to the serial flash starting + * at the given address. + */ +static int t3_write_flash(adapter_t *adapter, unsigned int addr, + unsigned int n, const u8 *data) +{ + int ret; + u32 buf[64]; + unsigned int i, c, left, val, offset = addr & 0xff; + + if (addr + n > SF_SIZE || offset + n > 256) + return -EINVAL; + + val = swab32(addr) | SF_PROG_PAGE; + + if ((ret = sf1_write(adapter, 1, 0, SF_WR_ENABLE)) != 0 || + (ret = sf1_write(adapter, 4, 1, val)) != 0) + return ret; + + for (left = n; left; left -= c) { + c = min(left, 4U); + for (val = 0, i = 0; i < c; ++i) + val = (val << 8) + *data++; + + ret = sf1_write(adapter, c, c != left, val); + if (ret) + return ret; + } + if ((ret = flash_wait_op(adapter, 5, 1)) != 0) + return ret; + + /* Read the page to verify the write succeeded */ + ret = t3_read_flash(adapter, addr & ~0xff, ARRAY_SIZE(buf), buf, 1); + if (ret) + return ret; + + if (memcmp(data - n, (u8 *)buf + offset, n)) + return -EIO; + return 0; +} + +/** + * t3_get_fw_version - read the firmware version + * @adapter: the adapter + * @vers: where to place the version + * + * Reads the FW version from flash. + */ +int t3_get_fw_version(adapter_t *adapter, u32 *vers) +{ + return t3_read_flash(adapter, FW_VERS_ADDR, 1, vers, 0); +} + +/** + * t3_check_fw_version - check if the FW is compatible with this driver + * @adapter: the adapter + * + * Checks if an adapter's FW is compatible with the driver. Returns 0 + * if the versions are compatible, a negative error otherwise. + */ +int t3_check_fw_version(adapter_t *adapter) +{ + int ret; + u32 vers; + + ret = t3_get_fw_version(adapter, &vers); + if (ret) + return ret; + + /* Minor 0xfff means the FW is an internal development-only version. */ + if ((vers & 0xfff) == 0xfff) + return 0; + + if (vers == 0x1002009) + return 0; + + return -EINVAL; +} + +/** + * t3_flash_erase_sectors - erase a range of flash sectors + * @adapter: the adapter + * @start: the first sector to erase + * @end: the last sector to erase + * + * Erases the sectors in the given range. + */ +static int t3_flash_erase_sectors(adapter_t *adapter, int start, int end) +{ + while (start <= end) { + int ret; + + if ((ret = sf1_write(adapter, 1, 0, SF_WR_ENABLE)) != 0 || + (ret = sf1_write(adapter, 4, 0, + SF_ERASE_SECTOR | (start << 8))) != 0 || + (ret = flash_wait_op(adapter, 5, 500)) != 0) + return ret; + start++; + } + return 0; +} + +/* + * t3_load_fw - download firmware + * @adapter: the adapter + * @fw_data: the firrware image to write + * @size: image size + * + * Write the supplied firmware image to the card's serial flash. + * The FW image has the following sections: @size - 8 bytes of code and + * data, followed by 4 bytes of FW version, followed by the 32-bit + * 1's complement checksum of the whole image. + */ +int t3_load_fw(adapter_t *adapter, const u8 *fw_data, unsigned int size) +{ + u32 csum; + unsigned int i; + const u32 *p = (const u32 *)fw_data; + int ret, addr, fw_sector = FW_FLASH_BOOT_ADDR >> 16; + + if (size & 3) + return -EINVAL; + if (size > FW_VERS_ADDR + 8 - FW_FLASH_BOOT_ADDR) + return -EFBIG; + + for (csum = 0, i = 0; i < size / sizeof(csum); i++) + csum += ntohl(p[i]); + if (csum != 0xffffffff) { + CH_ERR("%s: corrupted firmware image, checksum %u\n", + adapter_name(adapter), csum); + return -EINVAL; + } + + ret = t3_flash_erase_sectors(adapter, fw_sector, fw_sector); + if (ret) + goto out; + + size -= 8; /* trim off version and checksum */ + for (addr = FW_FLASH_BOOT_ADDR; size; ) { + unsigned int chunk_size = min(size, 256U); + + ret = t3_write_flash(adapter, addr, chunk_size, fw_data); + if (ret) + goto out; + + addr += chunk_size; + fw_data += chunk_size; + size -= chunk_size; + } + + ret = t3_write_flash(adapter, FW_VERS_ADDR, 4, fw_data); +out: + if (ret) + CH_ERR("%s: firmware download failed, error %d\n", + adapter_name(adapter), ret); + return ret; +} + +/** + * t3_link_changed - handle interface link changes + * @adapter: the adapter + * @port_id: the port index that changed link state + * + * Called when a port's link settings change to propagate the new values + * to the associated PHY and MAC. After performing the common tasks it + * invokes an OS-specific handler. + */ +void t3_link_changed(adapter_t *adapter, int port_id) +{ + int link_ok, speed, duplex, fc; + struct cphy *phy = &adapter->port[port_id].phy; + struct link_config *lc = &adapter->port[port_id].link_config; + + phy->ops->get_link_status(phy, &link_ok, &speed, &duplex, &fc); + + lc->link_ok = (unsigned char)link_ok; + lc->speed = speed < 0 ? SPEED_INVALID : speed; + lc->duplex = duplex < 0 ? DUPLEX_INVALID : duplex; + if (lc->requested_fc & PAUSE_AUTONEG) + fc &= lc->requested_fc; + else + fc = lc->requested_fc & (PAUSE_RX | PAUSE_TX); + + if (link_ok && speed >= 0 && lc->autoneg == AUTONEG_ENABLE) { + /* Set MAC speed, duplex, and flow control to match PHY. */ + t3_mac_set_speed_duplex_fc(&adapter->port[port_id].mac, speed, + duplex, fc); + lc->fc = (unsigned char)fc; + } + + t3_os_link_changed(adapter, port_id, link_ok, speed, duplex, fc); +} + +/** + * t3_link_start - apply link configuration to MAC/PHY + * @phy: the PHY to setup + * @mac: the MAC to setup + * @lc: the requested link configuration + * + * Set up a port's MAC and PHY according to a desired link configuration. + * - If the PHY can auto-negotiate first decide what to advertise, then + * enable/disable auto-negotiation as desired, and reset. + * - If the PHY does not auto-negotiate just reset it. + * - If auto-negotiation is off set the MAC to the proper speed/duplex/FC, + * otherwise do it later based on the outcome of auto-negotiation. + */ +int t3_link_start(struct cphy *phy, struct cmac *mac, struct link_config *lc) +{ + unsigned int fc = lc->requested_fc & (PAUSE_RX | PAUSE_TX); + + if (lc->supported & SUPPORTED_Autoneg) { + lc->advertising &= ~(ADVERTISED_Asym_Pause | ADVERTISED_Pause); + if (fc) { + lc->advertising |= ADVERTISED_Asym_Pause; + if (fc & PAUSE_RX) + lc->advertising |= ADVERTISED_Pause; + } + phy->ops->advertise(phy, lc->advertising); + + if (lc->autoneg == AUTONEG_DISABLE) { + lc->speed = lc->requested_speed; + lc->duplex = lc->requested_duplex; + lc->fc = (unsigned char)fc; + t3_mac_set_speed_duplex_fc(mac, lc->speed, lc->duplex, + fc); + /* Also disables autoneg */ + phy->ops->set_speed_duplex(phy, lc->speed, lc->duplex); + phy->ops->reset(phy, 0); + } else + phy->ops->autoneg_enable(phy); + } else { + t3_mac_set_speed_duplex_fc(mac, -1, -1, fc); + lc->fc = (unsigned char)fc; + phy->ops->reset(phy, 0); + } + return 0; +} + +/** + * t3_set_vlan_accel - control HW VLAN extraction + * @adapter: the adapter + * @ports: bitmap of adapter ports to operate on + * @on: enable (1) or disable (0) HW VLAN extraction + * + * Enables or disables HW extraction of VLAN tags for the given port. + */ +void t3_set_vlan_accel(adapter_t *adapter, unsigned int ports, int on) +{ + t3_set_reg_field(adapter, A_TP_OUT_CONFIG, + ports << S_VLANEXTRACTIONENABLE, + on ? (ports << S_VLANEXTRACTIONENABLE) : 0); +} + +struct intr_info { + unsigned int mask; /* bits to check in interrupt status */ + const char *msg; /* message to print or NULL */ + short stat_idx; /* stat counter to increment or -1 */ + unsigned short fatal:1; /* whether the condition reported is fatal */ +}; + +/** + * t3_handle_intr_status - table driven interrupt handler + * @adapter: the adapter that generated the interrupt + * @reg: the interrupt status register to process + * @mask: a mask to apply to the interrupt status + * @acts: table of interrupt actions + * @stats: statistics counters tracking interrupt occurences + * + * A table driven interrupt handler that applies a set of masks to an + * interrupt status word and performs the corresponding actions if the + * interrupts described by the mask have occured. The actions include + * optionally printing a warning or alert message, and optionally + * incrementing a stat counter. The table is terminated by an entry + * specifying mask 0. Returns the number of fatal interrupt conditions. + */ +static int t3_handle_intr_status(adapter_t *adapter, unsigned int reg, + unsigned int mask, + const struct intr_info *acts, + unsigned long *stats) +{ + int fatal = 0; + unsigned int status = t3_read_reg(adapter, reg) & mask; + + for ( ; acts->mask; ++acts) { + if (!(status & acts->mask)) continue; + if (acts->fatal) { + fatal++; + CH_ALERT("%s: %s (0x%x)\n", adapter_name(adapter), + acts->msg, status & acts->mask); + } else if (acts->msg) + CH_WARN("%s: %s (0x%x)\n", adapter_name(adapter), + acts->msg, status & acts->mask); + if (acts->stat_idx >= 0) + stats[acts->stat_idx]++; + } + if (status) /* clear processed interrupts */ + t3_write_reg(adapter, reg, status); + return fatal; +} + +#define SGE_INTR_MASK (F_RSPQDISABLED) +#define MC5_INTR_MASK (F_PARITYERR | F_ACTRGNFULL | F_UNKNOWNCMD | \ + F_REQQPARERR | F_DISPQPARERR | F_DELACTEMPTY | \ + F_NFASRCHFAIL) +#define MC7_INTR_MASK (F_AE | F_UE | F_CE | V_PE(M_PE)) +#define XGM_INTR_MASK (V_TXFIFO_PRTY_ERR(M_TXFIFO_PRTY_ERR) | \ + V_RXFIFO_PRTY_ERR(M_RXFIFO_PRTY_ERR) | \ + F_TXFIFO_UNDERRUN | F_RXFIFO_OVERFLOW) +#define PCIX_INTR_MASK (F_MSTDETPARERR | F_SIGTARABT | F_RCVTARABT | \ + F_RCVMSTABT | F_SIGSYSERR | F_DETPARERR | \ + F_SPLCMPDIS | F_UNXSPLCMP | F_RCVSPLCMPERR | \ + F_DETCORECCERR | F_DETUNCECCERR | F_PIOPARERR | \ + V_WFPARERR(M_WFPARERR) | V_RFPARERR(M_RFPARERR) | \ + V_CFPARERR(M_CFPARERR) /* | V_MSIXPARERR(M_MSIXPARERR) */) +#define PCIE_INTR_MASK (F_UNXSPLCPLERRR | F_UNXSPLCPLERRC | F_PCIE_PIOPARERR |\ + F_PCIE_WFPARERR | F_PCIE_RFPARERR | F_PCIE_CFPARERR | \ + /* V_PCIE_MSIXPARERR(M_PCIE_MSIXPARERR) | */ \ + V_BISTERR(M_BISTERR)) +#define ULPRX_INTR_MASK F_PARERR +#define ULPTX_INTR_MASK 0 +#define CPLSW_INTR_MASK (F_TP_FRAMING_ERROR | \ + F_SGE_FRAMING_ERROR | F_CIM_FRAMING_ERROR | \ + F_ZERO_SWITCH_ERROR) +#define CIM_INTR_MASK (F_BLKWRPLINT | F_BLKRDPLINT | F_BLKWRCTLINT | \ + F_BLKRDCTLINT | F_BLKWRFLASHINT | F_BLKRDFLASHINT | \ + F_SGLWRFLASHINT | F_WRBLKFLASHINT | F_BLKWRBOOTINT | \ + F_FLASHRANGEINT | F_SDRAMRANGEINT | F_RSVDSPACEINT) +#define PMTX_INTR_MASK (F_ZERO_C_CMD_ERROR | ICSPI_FRM_ERR | OESPI_FRM_ERR | \ + V_ICSPI_PAR_ERROR(M_ICSPI_PAR_ERROR) | \ + V_OESPI_PAR_ERROR(M_OESPI_PAR_ERROR)) +#define PMRX_INTR_MASK (F_ZERO_E_CMD_ERROR | IESPI_FRM_ERR | OCSPI_FRM_ERR | \ + V_IESPI_PAR_ERROR(M_IESPI_PAR_ERROR) | \ + V_OCSPI_PAR_ERROR(M_OCSPI_PAR_ERROR)) +#define MPS_INTR_MASK (V_TX0TPPARERRENB(M_TX0TPPARERRENB) | \ + V_TX1TPPARERRENB(M_TX1TPPARERRENB) | \ + V_RXTPPARERRENB(M_RXTPPARERRENB) | \ + V_MCAPARERRENB(M_MCAPARERRENB)) +#define PL_INTR_MASK (F_T3DBG | F_XGMAC0_0 | F_XGMAC0_1 | F_MC5A | F_PM1_TX | \ + F_PM1_RX | F_ULP2_TX | F_ULP2_RX | F_TP1 | F_CIM | \ + F_MC7_CM | F_MC7_PMTX | F_MC7_PMRX | F_SGE3 | F_PCIM0 | \ + F_MPS0 | F_CPL_SWITCH) + +/* + * Interrupt handler for the PCIX1 module. + */ +static void pci_intr_handler(adapter_t *adapter) +{ + static struct intr_info pcix1_intr_info[] = { + { F_MSTDETPARERR, "PCI master detected parity error", -1, 1 }, + { F_SIGTARABT, "PCI signaled target abort", -1, 1 }, + { F_RCVTARABT, "PCI received target abort", -1, 1 }, + { F_RCVMSTABT, "PCI received master abort", -1, 1 }, + { F_SIGSYSERR, "PCI signaled system error", -1, 1 }, + { F_DETPARERR, "PCI detected parity error", -1, 1 }, + { F_SPLCMPDIS, "PCI split completion discarded", -1, 1 }, + { F_UNXSPLCMP, "PCI unexpected split completion error", -1, 1 }, + { F_RCVSPLCMPERR, "PCI received split completion error", -1, + 1 }, + { F_DETCORECCERR, "PCI correctable ECC error", + STAT_PCI_CORR_ECC, 0 }, + { F_DETUNCECCERR, "PCI uncorrectable ECC error", -1, 1 }, + { F_PIOPARERR, "PCI PIO FIFO parity error", -1, 1 }, + { V_WFPARERR(M_WFPARERR), "PCI write FIFO parity error", -1, + 1 }, + { V_RFPARERR(M_RFPARERR), "PCI read FIFO parity error", -1, + 1 }, + { V_CFPARERR(M_CFPARERR), "PCI command FIFO parity error", -1, + 1 }, + { V_MSIXPARERR(M_MSIXPARERR), "PCI MSI-X table/PBA parity " + "error", -1, 1 }, + { 0 } + }; + + if (t3_handle_intr_status(adapter, A_PCIX_INT_CAUSE, PCIX_INTR_MASK, + pcix1_intr_info, adapter->irq_stats)) + t3_fatal_err(adapter); +} + +/* + * Interrupt handler for the PCIE module. + */ +static void pcie_intr_handler(adapter_t *adapter) +{ + static struct intr_info pcie_intr_info[] = { + { F_UNXSPLCPLERRR, + "PCI unexpected split completion DMA read error", -1, 1 }, + { F_UNXSPLCPLERRC, + "PCI unexpected split completion DMA command error", -1, 1 }, + { F_PCIE_PIOPARERR, "PCI PIO FIFO parity error", -1, 1 }, + { F_PCIE_WFPARERR, "PCI write FIFO parity error", -1, 1 }, + { F_PCIE_RFPARERR, "PCI read FIFO parity error", -1, 1 }, + { F_PCIE_CFPARERR, "PCI command FIFO parity error", -1, 1 }, + { V_PCIE_MSIXPARERR(M_PCIE_MSIXPARERR), + "PCI MSI-X table/PBA parity error", -1, 1 }, + { V_BISTERR(M_BISTERR), "PCI BIST error", -1, 1 }, + { 0 } + }; + + if (t3_handle_intr_status(adapter, A_PCIE_INT_CAUSE, PCIE_INTR_MASK, + pcie_intr_info, adapter->irq_stats)) + t3_fatal_err(adapter); +} + +/* + * TP interrupt handler. + */ +static void tp_intr_handler(adapter_t *adapter) +{ + static struct intr_info tp_intr_info[] = { + { 0xffffff, "TP parity error", -1, 1 }, + { 0x1000000, "TP out of Rx pages", -1, 1 }, + { 0x2000000, "TP out of Tx pages", -1, 1 }, + { 0 } + }; + + if (t3_handle_intr_status(adapter, A_TP_INT_CAUSE, 0xffffffff, + tp_intr_info, NULL)) + t3_fatal_err(adapter); +} + +/* + * CIM interrupt handler. + */ +static void cim_intr_handler(adapter_t *adapter) +{ + static struct intr_info cim_intr_info[] = { + { F_RSVDSPACEINT, "CIM reserved space write", -1, 1 }, + { F_SDRAMRANGEINT, "CIM SDRAM address out of range", -1, 1 }, + { F_FLASHRANGEINT, "CIM flash address out of range", -1, 1 }, + { F_BLKWRBOOTINT, "CIM block write to boot space", -1, 1 }, + { F_WRBLKFLASHINT, "CIM write to cached flash space", -1, 1 }, + { F_SGLWRFLASHINT, "CIM single write to flash space", -1, 1 }, + { F_BLKRDFLASHINT, "CIM block read from flash space", -1, 1 }, + { F_BLKWRFLASHINT, "CIM block write to flash space", -1, 1 }, + { F_BLKRDCTLINT, "CIM block read from CTL space", -1, 1 }, + { F_BLKWRCTLINT, "CIM block write to CTL space", -1, 1 }, + { F_BLKRDPLINT, "CIM block read from PL space", -1, 1 }, + { F_BLKWRPLINT, "CIM block write to PL space", -1, 1 }, + { 0 } + }; + + if (t3_handle_intr_status(adapter, A_CIM_HOST_INT_CAUSE, 0xffffffff, + cim_intr_info, NULL)) + t3_fatal_err(adapter); +} + +/* + * ULP RX interrupt handler. + */ +static void ulprx_intr_handler(adapter_t *adapter) +{ + static struct intr_info ulprx_intr_info[] = { + { F_PARERR, "ULP RX parity error", -1, 1 }, + { 0 } + }; + + if (t3_handle_intr_status(adapter, A_ULPRX_INT_CAUSE, 0xffffffff, + ulprx_intr_info, NULL)) + t3_fatal_err(adapter); +} + +/* + * ULP TX interrupt handler. + */ +static void ulptx_intr_handler(adapter_t *adapter) +{ + static struct intr_info ulptx_intr_info[] = { + { F_PBL_BOUND_ERR_CH0, "ULP TX channel 0 PBL out of bounds", + STAT_ULP_CH0_PBL_OOB, 0 }, + { F_PBL_BOUND_ERR_CH1, "ULP TX channel 1 PBL out of bounds", + STAT_ULP_CH1_PBL_OOB, 0 }, + { 0 } + }; + + if (t3_handle_intr_status(adapter, A_ULPTX_INT_CAUSE, 0xffffffff, + ulptx_intr_info, adapter->irq_stats)) + t3_fatal_err(adapter); +} + +#define ICSPI_FRM_ERR (F_ICSPI0_FIFO2X_RX_FRAMING_ERROR | \ + F_ICSPI1_FIFO2X_RX_FRAMING_ERROR | F_ICSPI0_RX_FRAMING_ERROR | \ + F_ICSPI1_RX_FRAMING_ERROR | F_ICSPI0_TX_FRAMING_ERROR | \ + F_ICSPI1_TX_FRAMING_ERROR) +#define OESPI_FRM_ERR (F_OESPI0_RX_FRAMING_ERROR | \ + F_OESPI1_RX_FRAMING_ERROR | F_OESPI0_TX_FRAMING_ERROR | \ + F_OESPI1_TX_FRAMING_ERROR | F_OESPI0_OFIFO2X_TX_FRAMING_ERROR | \ + F_OESPI1_OFIFO2X_TX_FRAMING_ERROR) + +/* + * PM TX interrupt handler. + */ +static void pmtx_intr_handler(adapter_t *adapter) +{ + static struct intr_info pmtx_intr_info[] = { + { F_ZERO_C_CMD_ERROR, "PMTX 0-length pcmd", -1, 1 }, + { ICSPI_FRM_ERR, "PMTX ispi framing error", -1, 1 }, + { OESPI_FRM_ERR, "PMTX ospi framing error", -1, 1 }, + { V_ICSPI_PAR_ERROR(M_ICSPI_PAR_ERROR), + "PMTX ispi parity error", -1, 1 }, + { V_OESPI_PAR_ERROR(M_OESPI_PAR_ERROR), + "PMTX ospi parity error", -1, 1 }, + { 0 } + }; + + if (t3_handle_intr_status(adapter, A_PM1_TX_INT_CAUSE, 0xffffffff, + pmtx_intr_info, NULL)) + t3_fatal_err(adapter); +} + +#define IESPI_FRM_ERR (F_IESPI0_FIFO2X_RX_FRAMING_ERROR | \ + F_IESPI1_FIFO2X_RX_FRAMING_ERROR | F_IESPI0_RX_FRAMING_ERROR | \ + F_IESPI1_RX_FRAMING_ERROR | F_IESPI0_TX_FRAMING_ERROR | \ + F_IESPI1_TX_FRAMING_ERROR) +#define OCSPI_FRM_ERR (F_OCSPI0_RX_FRAMING_ERROR | \ + F_OCSPI1_RX_FRAMING_ERROR | F_OCSPI0_TX_FRAMING_ERROR | \ + F_OCSPI1_TX_FRAMING_ERROR | F_OCSPI0_OFIFO2X_TX_FRAMING_ERROR | \ + F_OCSPI1_OFIFO2X_TX_FRAMING_ERROR) + +/* + * PM RX interrupt handler. + */ +static void pmrx_intr_handler(adapter_t *adapter) +{ + static struct intr_info pmrx_intr_info[] = { + { F_ZERO_E_CMD_ERROR, "PMRX 0-length pcmd", -1, 1 }, + { IESPI_FRM_ERR, "PMRX ispi framing error", -1, 1 }, + { OCSPI_FRM_ERR, "PMRX ospi framing error", -1, 1 }, + { V_IESPI_PAR_ERROR(M_IESPI_PAR_ERROR), + "PMRX ispi parity error", -1, 1 }, + { V_OCSPI_PAR_ERROR(M_OCSPI_PAR_ERROR), + "PMRX ospi parity error", -1, 1 }, + { 0 } + }; + + if (t3_handle_intr_status(adapter, A_PM1_RX_INT_CAUSE, 0xffffffff, + pmrx_intr_info, NULL)) + t3_fatal_err(adapter); +} + +/* + * CPL switch interrupt handler. + */ +static void cplsw_intr_handler(adapter_t *adapter) +{ + static struct intr_info cplsw_intr_info[] = { +// { F_CIM_OVFL_ERROR, "CPL switch CIM overflow", -1, 1 }, + { F_TP_FRAMING_ERROR, "CPL switch TP framing error", -1, 1 }, + { F_SGE_FRAMING_ERROR, "CPL switch SGE framing error", -1, 1 }, + { F_CIM_FRAMING_ERROR, "CPL switch CIM framing error", -1, 1 }, + { F_ZERO_SWITCH_ERROR, "CPL switch no-switch error", -1, 1 }, + { 0 } + }; + + if (t3_handle_intr_status(adapter, A_CPL_INTR_CAUSE, 0xffffffff, + cplsw_intr_info, NULL)) + t3_fatal_err(adapter); +} + +/* + * MPS interrupt handler. + */ +static void mps_intr_handler(adapter_t *adapter) +{ + static struct intr_info mps_intr_info[] = { + { 0x1ff, "MPS parity error", -1, 1 }, + { 0 } + }; + + if (t3_handle_intr_status(adapter, A_MPS_INT_CAUSE, 0xffffffff, + mps_intr_info, NULL)) + t3_fatal_err(adapter); +} + +#define MC7_INTR_FATAL (F_UE | V_PE(M_PE) | F_AE) + +/* + * MC7 interrupt handler. + */ +static void mc7_intr_handler(struct mc7 *mc7) +{ + adapter_t *adapter = mc7->adapter; + u32 cause = t3_read_reg(adapter, mc7->offset + A_MC7_INT_CAUSE); + + if (cause & F_CE) { + mc7->stats.corr_err++; + CH_WARN("%s: %s MC7 correctable error at addr 0x%x, " + "data 0x%x 0x%x 0x%x\n", adapter_name(adapter), + mc7->name, + t3_read_reg(adapter, mc7->offset + A_MC7_CE_ADDR), + t3_read_reg(adapter, mc7->offset + A_MC7_CE_DATA0), + t3_read_reg(adapter, mc7->offset + A_MC7_CE_DATA1), + t3_read_reg(adapter, mc7->offset + A_MC7_CE_DATA2)); + } + + if (cause & F_UE) { + mc7->stats.uncorr_err++; + CH_ALERT("%s: %s MC7 uncorrectable error at addr 0x%x, " + "data 0x%x 0x%x 0x%x\n", adapter_name(adapter), + mc7->name, + t3_read_reg(adapter, mc7->offset + A_MC7_UE_ADDR), + t3_read_reg(adapter, mc7->offset + A_MC7_UE_DATA0), + t3_read_reg(adapter, mc7->offset + A_MC7_UE_DATA1), + t3_read_reg(adapter, mc7->offset + A_MC7_UE_DATA2)); + } + + if (G_PE(cause)) { + mc7->stats.parity_err++; + CH_ALERT("%s: %s MC7 parity error 0x%x\n", + adapter_name(adapter), mc7->name, G_PE(cause)); + } + + if (cause & F_AE) { + u32 addr = 0; + + if (adapter->params.rev > 0) + addr = t3_read_reg(adapter, + mc7->offset + A_MC7_ERR_ADDR); + mc7->stats.addr_err++; + CH_ALERT("%s: %s MC7 address error: 0x%x\n", + adapter_name(adapter), mc7->name, addr); + } + + if (cause & MC7_INTR_FATAL) + t3_fatal_err(adapter); + + t3_write_reg(adapter, mc7->offset + A_MC7_INT_CAUSE, cause); +} + +#define XGM_INTR_FATAL (V_TXFIFO_PRTY_ERR(M_TXFIFO_PRTY_ERR) | \ + V_RXFIFO_PRTY_ERR(M_RXFIFO_PRTY_ERR)) +/* + * XGMAC interrupt handler. + */ +static int mac_intr_handler(adapter_t *adap, unsigned int idx) +{ + struct cmac *mac = &adap->port[idx].mac; + u32 cause = t3_read_reg(adap, A_XGM_INT_CAUSE + mac->offset); + + if (cause & V_TXFIFO_PRTY_ERR(M_TXFIFO_PRTY_ERR)) { + mac->stats.tx_fifo_parity_err++; + CH_ALERT("port%d: MAC TX FIFO parity error\n", idx); + } + if (cause & V_RXFIFO_PRTY_ERR(M_RXFIFO_PRTY_ERR)) { + mac->stats.rx_fifo_parity_err++; + CH_ALERT("port%d: MAC RX FIFO parity error\n", idx); + } + if (cause & F_TXFIFO_UNDERRUN) + mac->stats.tx_fifo_urun++; + if (cause & F_RXFIFO_OVERFLOW) + mac->stats.rx_fifo_ovfl++; + if (cause & V_SERDES_LOS(M_SERDES_LOS)) + mac->stats.serdes_signal_loss++; + if (cause & F_XAUIPCSCTCERR) + mac->stats.xaui_pcs_ctc_err++; + if (cause & F_XAUIPCSALIGNCHANGE) + mac->stats.xaui_pcs_align_change++; + + t3_write_reg(adap, A_XGM_INT_CAUSE + mac->offset, cause); + if (cause & XGM_INTR_FATAL) + t3_fatal_err(adap); + return cause != 0; +} + +/* + * Interrupt handler for PHY events. + */ +int t3_phy_intr_handler(adapter_t *adapter) +{ + static int intr_gpio_bits[] = { 8, 0x20 }; + + u32 i, cause = t3_read_reg(adapter, A_T3DBG_INT_CAUSE); + + for_each_port(adapter, i) { + if (cause & intr_gpio_bits[i]) { + struct cphy *phy = &adapter->port[i].phy; + int phy_cause = phy->ops->intr_handler(phy); + + if (phy_cause & cphy_cause_link_change) + t3_link_changed(adapter, i); + if (phy_cause & cphy_cause_fifo_error) + phy->fifo_errors++; + } + } + + t3_write_reg(adapter, A_T3DBG_INT_CAUSE, cause); + return 0; +} + +/* + * T3 slow path (non-data) interrupt handler. + */ +int t3_slow_intr_handler(adapter_t *adapter) +{ + u32 cause = t3_read_reg(adapter, A_PL_INT_CAUSE0); + + cause &= adapter->slow_intr_mask; + if (!cause) + return 0; + if (cause & F_PCIM0) { + if (is_pcie(adapter)) + pcie_intr_handler(adapter); + else + pci_intr_handler(adapter); + } + if (cause & F_SGE3) + t3_sge_err_intr_handler(adapter); + if (cause & F_MC7_PMRX) + mc7_intr_handler(&adapter->pmrx); + if (cause & F_MC7_PMTX) + mc7_intr_handler(&adapter->pmtx); + if (cause & F_MC7_CM) + mc7_intr_handler(&adapter->cm); + if (cause & F_CIM) + cim_intr_handler(adapter); + if (cause & F_TP1) + tp_intr_handler(adapter); + if (cause & F_ULP2_RX) + ulprx_intr_handler(adapter); + if (cause & F_ULP2_TX) + ulptx_intr_handler(adapter); + if (cause & F_PM1_RX) + pmrx_intr_handler(adapter); + if (cause & F_PM1_TX) + pmtx_intr_handler(adapter); + if (cause & F_CPL_SWITCH) + cplsw_intr_handler(adapter); + if (cause & F_MPS0) + mps_intr_handler(adapter); + if (cause & F_MC5A) + t3_mc5_intr_handler(&adapter->mc5); + if (cause & F_XGMAC0_0) + mac_intr_handler(adapter, 0); + if (cause & F_XGMAC0_1) + mac_intr_handler(adapter, 1); + if (cause & F_T3DBG) + t3_os_ext_intr_handler(adapter); + + /* Clear the interrupts just processed. */ + t3_write_reg(adapter, A_PL_INT_CAUSE0, cause); + (void) t3_read_reg(adapter, A_PL_INT_CAUSE0); /* flush */ + return 1; +} + +/** + * t3_intr_enable - enable interrupts + * @adapter: the adapter whose interrupts should be enabled + * + * Enable interrupts by setting the interrupt enable registers of the + * various HW modules and then enabling the top-level interrupt + * concentrator. + */ +void t3_intr_enable(adapter_t *adapter) +{ + static struct addr_val_pair intr_en_avp[] = { + { A_SG_INT_ENABLE, SGE_INTR_MASK }, + { A_MC7_INT_ENABLE, MC7_INTR_MASK }, + { A_MC7_INT_ENABLE - MC7_PMRX_BASE_ADDR + MC7_PMTX_BASE_ADDR, + MC7_INTR_MASK }, + { A_MC7_INT_ENABLE - MC7_PMRX_BASE_ADDR + MC7_CM_BASE_ADDR, + MC7_INTR_MASK }, + { A_MC5_DB_INT_ENABLE, MC5_INTR_MASK }, + { A_ULPRX_INT_ENABLE, ULPRX_INTR_MASK }, + { A_TP_INT_ENABLE, 0x3bfffff }, + { A_PM1_TX_INT_ENABLE, PMTX_INTR_MASK }, + { A_PM1_RX_INT_ENABLE, PMRX_INTR_MASK }, + { A_CIM_HOST_INT_ENABLE, CIM_INTR_MASK }, + { A_MPS_INT_ENABLE, MPS_INTR_MASK }, + }; + + adapter->slow_intr_mask = PL_INTR_MASK; + + t3_write_regs(adapter, intr_en_avp, ARRAY_SIZE(intr_en_avp), 0); + + if (adapter->params.rev > 0) { + t3_write_reg(adapter, A_CPL_INTR_ENABLE, + CPLSW_INTR_MASK | F_CIM_OVFL_ERROR); + t3_write_reg(adapter, A_ULPTX_INT_ENABLE, + ULPTX_INTR_MASK | F_PBL_BOUND_ERR_CH0 | + F_PBL_BOUND_ERR_CH1); + } else { + t3_write_reg(adapter, A_CPL_INTR_ENABLE, CPLSW_INTR_MASK); + t3_write_reg(adapter, A_ULPTX_INT_ENABLE, ULPTX_INTR_MASK); + } + + t3_write_reg(adapter, A_T3DBG_GPIO_ACT_LOW, + adapter_info(adapter)->gpio_intr); + t3_write_reg(adapter, A_T3DBG_INT_ENABLE, + adapter_info(adapter)->gpio_intr); + if (is_pcie(adapter)) + t3_write_reg(adapter, A_PCIE_INT_ENABLE, PCIE_INTR_MASK); + else + t3_write_reg(adapter, A_PCIX_INT_ENABLE, PCIX_INTR_MASK); + t3_write_reg(adapter, A_PL_INT_ENABLE0, adapter->slow_intr_mask); + (void) t3_read_reg(adapter, A_PL_INT_ENABLE0); /* flush */ +} + +/** + * t3_intr_disable - disable a card's interrupts + * @adapter: the adapter whose interrupts should be disabled + * + * Disable interrupts. We only disable the top-level interrupt + * concentrator and the SGE data interrupts. + */ +void t3_intr_disable(adapter_t *adapter) +{ + t3_write_reg(adapter, A_PL_INT_ENABLE0, 0); + (void) t3_read_reg(adapter, A_PL_INT_ENABLE0); /* flush */ + adapter->slow_intr_mask = 0; +} + +/** + * t3_intr_clear - clear all interrupts + * @adapter: the adapter whose interrupts should be cleared + * + * Clears all interrupts. + */ +void t3_intr_clear(adapter_t *adapter) +{ + static unsigned int cause_reg_addr[] = { + A_SG_INT_CAUSE, + A_SG_RSPQ_FL_STATUS, + A_PCIX_INT_CAUSE, + A_MC7_INT_CAUSE, + A_MC7_INT_CAUSE - MC7_PMRX_BASE_ADDR + MC7_PMTX_BASE_ADDR, + A_MC7_INT_CAUSE - MC7_PMRX_BASE_ADDR + MC7_CM_BASE_ADDR, + A_CIM_HOST_INT_CAUSE, + A_TP_INT_CAUSE, + A_MC5_DB_INT_CAUSE, + A_ULPRX_INT_CAUSE, + A_ULPTX_INT_CAUSE, + A_CPL_INTR_CAUSE, + A_PM1_TX_INT_CAUSE, + A_PM1_RX_INT_CAUSE, + A_MPS_INT_CAUSE, + A_T3DBG_INT_CAUSE, + }; + unsigned int i; + + /* Clear PHY and MAC interrupts for each port. */ + for_each_port(adapter, i) + t3_port_intr_clear(adapter, i); + + for (i = 0; i < ARRAY_SIZE(cause_reg_addr); ++i) + t3_write_reg(adapter, cause_reg_addr[i], 0xffffffff); + + t3_write_reg(adapter, A_PL_INT_CAUSE0, 0xffffffff); + (void) t3_read_reg(adapter, A_PL_INT_CAUSE0); /* flush */ +} + +/** + * t3_port_intr_enable - enable port-specific interrupts + * @adapter: associated adapter + * @idx: index of port whose interrupts should be enabled + * + * Enable port-specific (i.e., MAC and PHY) interrupts for the given + * adapter port. + */ +void t3_port_intr_enable(adapter_t *adapter, int idx) +{ + t3_write_reg(adapter, XGM_REG(A_XGM_INT_ENABLE, idx), XGM_INTR_MASK); + adapter->port[idx].phy.ops->intr_enable(&adapter->port[idx].phy); +} + +/** + * t3_port_intr_disable - disable port-specific interrupts + * @adapter: associated adapter + * @idx: index of port whose interrupts should be disabled + * + * Disable port-specific (i.e., MAC and PHY) interrupts for the given + * adapter port. + */ +void t3_port_intr_disable(adapter_t *adapter, int idx) +{ + t3_write_reg(adapter, XGM_REG(A_XGM_INT_ENABLE, idx), 0); + adapter->port[idx].phy.ops->intr_disable(&adapter->port[idx].phy); +} + +/** + * t3_port_intr_clear - clear port-specific interrupts + * @adapter: associated adapter + * @idx: index of port whose interrupts to clear + * + * Clear port-specific (i.e., MAC and PHY) interrupts for the given + * adapter port. + */ +void t3_port_intr_clear(adapter_t *adapter, int idx) +{ + t3_write_reg(adapter, XGM_REG(A_XGM_INT_CAUSE, idx), 0xffffffff); + adapter->port[idx].phy.ops->intr_clear(&adapter->port[idx].phy); +} + + +/** + * t3_sge_write_context - write an SGE context + * @adapter: the adapter + * @id: the context id + * @type: the context type + * + * Program an SGE context with the values already loaded in the + * CONTEXT_DATA? registers. + */ +static int t3_sge_write_context(adapter_t *adapter, unsigned int id, + unsigned int type) +{ + t3_write_reg(adapter, A_SG_CONTEXT_MASK0, 0xffffffff); + t3_write_reg(adapter, A_SG_CONTEXT_MASK1, 0xffffffff); + t3_write_reg(adapter, A_SG_CONTEXT_MASK2, 0xffffffff); + t3_write_reg(adapter, A_SG_CONTEXT_MASK3, 0xffffffff); + t3_write_reg(adapter, A_SG_CONTEXT_CMD, + V_CONTEXT_CMD_OPCODE(1) | type | V_CONTEXT(id)); + return t3_wait_op_done(adapter, A_SG_CONTEXT_CMD, F_CONTEXT_CMD_BUSY, + 0, 5, 1); +} + +/** + * t3_sge_init_ecntxt - initialize an SGE egress context + * @adapter: the adapter to configure + * @id: the context id + * @gts_enable: whether to enable GTS for the context + * @type: the egress context type + * @respq: associated response queue + * @base_addr: base address of queue + * @size: number of queue entries + * @token: uP token + * @gen: initial generation value for the context + * @cidx: consumer pointer + * + * Initialize an SGE egress context and make it ready for use. If the + * platform allows concurrent context operations, the caller is + * responsible for appropriate locking. + */ +int t3_sge_init_ecntxt(adapter_t *adapter, unsigned int id, int gts_enable, + enum sge_context_type type, int respq, u64 base_addr, + unsigned int size, unsigned int token, int gen, + unsigned int cidx) +{ + unsigned int credits = type == SGE_CNTXT_OFLD ? 0 : FW_WR_NUM; + + if (base_addr & 0xfff) /* must be 4K aligned */ + return -EINVAL; + if (t3_read_reg(adapter, A_SG_CONTEXT_CMD) & F_CONTEXT_CMD_BUSY) + return -EBUSY; + + base_addr >>= 12; + t3_write_reg(adapter, A_SG_CONTEXT_DATA0, V_EC_INDEX(cidx) | + V_EC_CREDITS(credits) | V_EC_GTS(gts_enable)); + t3_write_reg(adapter, A_SG_CONTEXT_DATA1, V_EC_SIZE(size) | + V_EC_BASE_LO((u32)base_addr & 0xffff)); + base_addr >>= 16; + t3_write_reg(adapter, A_SG_CONTEXT_DATA2, (u32)base_addr); + base_addr >>= 32; + t3_write_reg(adapter, A_SG_CONTEXT_DATA3, + V_EC_BASE_HI((u32)base_addr & 0xf) | V_EC_RESPQ(respq) | + V_EC_TYPE(type) | V_EC_GEN(gen) | V_EC_UP_TOKEN(token) | + F_EC_VALID); + return t3_sge_write_context(adapter, id, F_EGRESS); +} + +/** + * t3_sge_init_flcntxt - initialize an SGE free-buffer list context + * @adapter: the adapter to configure + * @id: the context id + * @gts_enable: whether to enable GTS for the context + * @base_addr: base address of queue + * @size: number of queue entries + * @bsize: size of each buffer for this queue + * @cong_thres: threshold to signal congestion to upstream producers + * @gen: initial generation value for the context + * @cidx: consumer pointer + * + * Initialize an SGE free list context and make it ready for use. The + * caller is responsible for ensuring only one context operation occurs + * at a time. + */ +int t3_sge_init_flcntxt(adapter_t *adapter, unsigned int id, int gts_enable, + u64 base_addr, unsigned int size, unsigned int bsize, + unsigned int cong_thres, int gen, unsigned int cidx) +{ + if (base_addr & 0xfff) /* must be 4K aligned */ + return -EINVAL; + if (t3_read_reg(adapter, A_SG_CONTEXT_CMD) & F_CONTEXT_CMD_BUSY) + return -EBUSY; + + base_addr >>= 12; + t3_write_reg(adapter, A_SG_CONTEXT_DATA0, (u32)base_addr); + base_addr >>= 32; + t3_write_reg(adapter, A_SG_CONTEXT_DATA1, + V_FL_BASE_HI((u32)base_addr) | + V_FL_INDEX_LO(cidx & M_FL_INDEX_LO)); + t3_write_reg(adapter, A_SG_CONTEXT_DATA2, V_FL_SIZE(size) | + V_FL_GEN(gen) | V_FL_INDEX_HI(cidx >> 12) | + V_FL_ENTRY_SIZE_LO(bsize & M_FL_ENTRY_SIZE_LO)); + t3_write_reg(adapter, A_SG_CONTEXT_DATA3, + V_FL_ENTRY_SIZE_HI(bsize >> (32 - S_FL_ENTRY_SIZE_LO)) | + V_FL_CONG_THRES(cong_thres) | V_FL_GTS(gts_enable)); + return t3_sge_write_context(adapter, id, F_FREELIST); +} + +/** + * t3_sge_init_rspcntxt - initialize an SGE response queue context + * @adapter: the adapter to configure + * @id: the context id + * @irq_vec_idx: MSI-X interrupt vector index, 0 if no MSI-X, -1 if no IRQ + * @base_addr: base address of queue + * @size: number of queue entries + * @fl_thres: threshold for selecting the normal or jumbo free list + * @gen: initial generation value for the context + * @cidx: consumer pointer + * + * Initialize an SGE response queue context and make it ready for use. + * The caller is responsible for ensuring only one context operation + * occurs at a time. + */ +int t3_sge_init_rspcntxt(adapter_t *adapter, unsigned int id, int irq_vec_idx, + u64 base_addr, unsigned int size, + unsigned int fl_thres, int gen, unsigned int cidx) +{ + unsigned int intr = 0; + + if (base_addr & 0xfff) /* must be 4K aligned */ + return -EINVAL; + if (t3_read_reg(adapter, A_SG_CONTEXT_CMD) & F_CONTEXT_CMD_BUSY) + return -EBUSY; + + base_addr >>= 12; + t3_write_reg(adapter, A_SG_CONTEXT_DATA0, V_CQ_SIZE(size) | + V_CQ_INDEX(cidx)); + t3_write_reg(adapter, A_SG_CONTEXT_DATA1, (u32)base_addr); + base_addr >>= 32; + if (irq_vec_idx >= 0) + intr = V_RQ_MSI_VEC(irq_vec_idx) | F_RQ_INTR_EN; + t3_write_reg(adapter, A_SG_CONTEXT_DATA2, + V_CQ_BASE_HI((u32)base_addr) | intr | V_RQ_GEN(gen)); + t3_write_reg(adapter, A_SG_CONTEXT_DATA3, fl_thres); + return t3_sge_write_context(adapter, id, F_RESPONSEQ); +} + +/** + * t3_sge_init_cqcntxt - initialize an SGE completion queue context + * @adapter: the adapter to configure + * @id: the context id + * @base_addr: base address of queue + * @size: number of queue entries + * @rspq: response queue for async notifications + * @ovfl_mode: CQ overflow mode + * @credits: completion queue credits + * @credit_thres: the credit threshold + * + * Initialize an SGE completion queue context and make it ready for use. + * The caller is responsible for ensuring only one context operation + * occurs at a time. + */ +int t3_sge_init_cqcntxt(adapter_t *adapter, unsigned int id, u64 base_addr, + unsigned int size, int rspq, int ovfl_mode, + unsigned int credits, unsigned int credit_thres) +{ + if (base_addr & 0xfff) /* must be 4K aligned */ + return -EINVAL; + if (t3_read_reg(adapter, A_SG_CONTEXT_CMD) & F_CONTEXT_CMD_BUSY) + return -EBUSY; + + base_addr >>= 12; + t3_write_reg(adapter, A_SG_CONTEXT_DATA0, V_CQ_SIZE(size)); + t3_write_reg(adapter, A_SG_CONTEXT_DATA1, (u32)base_addr); + base_addr >>= 32; + t3_write_reg(adapter, A_SG_CONTEXT_DATA2, + V_CQ_BASE_HI((u32)base_addr) | V_CQ_RSPQ(rspq) | + V_CQ_GEN(1) | V_CQ_OVERFLOW_MODE(ovfl_mode)); + t3_write_reg(adapter, A_SG_CONTEXT_DATA3, V_CQ_CREDITS(credits) | + V_CQ_CREDIT_THRES(credit_thres)); + return t3_sge_write_context(adapter, id, F_CQ); +} + +/** + * t3_sge_enable_ecntxt - enable/disable an SGE egress context + * @adapter: the adapter + * @id: the egress context id + * @enable: enable (1) or disable (0) the context + * + * Enable or disable an SGE egress context. The caller is responsible for + * ensuring only one context operation occurs at a time. + */ +int t3_sge_enable_ecntxt(adapter_t *adapter, unsigned int id, int enable) +{ + if (t3_read_reg(adapter, A_SG_CONTEXT_CMD) & F_CONTEXT_CMD_BUSY) + return -EBUSY; + + t3_write_reg(adapter, A_SG_CONTEXT_MASK0, 0); + t3_write_reg(adapter, A_SG_CONTEXT_MASK1, 0); + t3_write_reg(adapter, A_SG_CONTEXT_MASK2, 0); + t3_write_reg(adapter, A_SG_CONTEXT_MASK3, F_EC_VALID); + t3_write_reg(adapter, A_SG_CONTEXT_DATA3, V_EC_VALID(enable)); + t3_write_reg(adapter, A_SG_CONTEXT_CMD, + V_CONTEXT_CMD_OPCODE(1) | F_EGRESS | V_CONTEXT(id)); - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/