/* * Copyright (c) 2006 - 2011 Intel Corporation. All rights reserved. * * This software is available to you under a choice of one of two * licenses. You may choose to be licensed under the terms of the GNU * General Public License (GPL) Version 2, available from the file * COPYING in the main directory of this source tree, or the * OpenIB.org BSD license below: * * Redistribution and use in source and binary forms, with or * without modification, are permitted provided that the following * conditions are met: * * - Redistributions of source code must retain the above * copyright notice, this list of conditions and the following * disclaimer. * * - Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials * provided with the distribution. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE * SOFTWARE. * */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "nes.h" static u16 nes_read16_eeprom(void __iomem *addr, u16 offset); u32 mh_detected; u32 mh_pauses_sent; static u32 nes_set_pau(struct nes_device *nesdev) { u32 ret = 0; u32 counter; nes_write_indexed(nesdev, NES_IDX_GPR2, NES_ENABLE_PAU); nes_write_indexed(nesdev, NES_IDX_GPR_TRIGGER, 1); for (counter = 0; counter < NES_PAU_COUNTER; counter++) { udelay(30); if (!nes_read_indexed(nesdev, NES_IDX_GPR2)) { printk(KERN_INFO PFX "PAU is supported.\n"); break; } nes_write_indexed(nesdev, NES_IDX_GPR_TRIGGER, 1); } if (counter == NES_PAU_COUNTER) { printk(KERN_INFO PFX "PAU is not supported.\n"); return -EPERM; } return ret; } /** * nes_read_eeprom_values - */ int nes_read_eeprom_values(struct nes_device *nesdev, struct nes_adapter *nesadapter) { u32 mac_addr_low; u16 mac_addr_high; u16 eeprom_data; u16 eeprom_offset; u16 next_section_address; u16 sw_section_ver; u8 major_ver = 0; u8 minor_ver = 0; /* TODO: deal with EEPROM endian issues */ if (nesadapter->firmware_eeprom_offset == 0) { /* Read the EEPROM Parameters */ eeprom_data = nes_read16_eeprom(nesdev->regs, 0); nes_debug(NES_DBG_HW, "EEPROM Offset 0 = 0x%04X\n", eeprom_data); eeprom_offset = 2 + (((eeprom_data & 0x007f) << 3) << ((eeprom_data & 0x0080) >> 7)); nes_debug(NES_DBG_HW, "Firmware Offset = 0x%04X\n", eeprom_offset); nesadapter->firmware_eeprom_offset = eeprom_offset; eeprom_data = nes_read16_eeprom(nesdev->regs, eeprom_offset + 4); if (eeprom_data != 0x5746) { nes_debug(NES_DBG_HW, "Not a valid Firmware Image = 0x%04X\n", eeprom_data); return -1; } eeprom_data = nes_read16_eeprom(nesdev->regs, eeprom_offset + 2); nes_debug(NES_DBG_HW, "EEPROM Offset %u = 0x%04X\n", eeprom_offset + 2, eeprom_data); eeprom_offset += ((eeprom_data & 0x00ff) << 3) << ((eeprom_data & 0x0100) >> 8); nes_debug(NES_DBG_HW, "Software Offset = 0x%04X\n", eeprom_offset); nesadapter->software_eeprom_offset = eeprom_offset; eeprom_data = nes_read16_eeprom(nesdev->regs, eeprom_offset + 4); if (eeprom_data != 0x5753) { printk("Not a valid Software Image = 0x%04X\n", eeprom_data); return -1; } sw_section_ver = nes_read16_eeprom(nesdev->regs, nesadapter->software_eeprom_offset + 6); nes_debug(NES_DBG_HW, "Software section version number = 0x%04X\n", sw_section_ver); eeprom_data = nes_read16_eeprom(nesdev->regs, eeprom_offset + 2); nes_debug(NES_DBG_HW, "EEPROM Offset %u (next section) = 0x%04X\n", eeprom_offset + 2, eeprom_data); next_section_address = eeprom_offset + (((eeprom_data & 0x00ff) << 3) << ((eeprom_data & 0x0100) >> 8)); eeprom_data = nes_read16_eeprom(nesdev->regs, next_section_address + 4); if (eeprom_data != 0x414d) { nes_debug(NES_DBG_HW, "EEPROM Changed offset should be 0x414d but was 0x%04X\n", eeprom_data); goto no_fw_rev; } eeprom_offset = next_section_address; eeprom_data = nes_read16_eeprom(nesdev->regs, eeprom_offset + 2); nes_debug(NES_DBG_HW, "EEPROM Offset %u (next section) = 0x%04X\n", eeprom_offset + 2, eeprom_data); next_section_address = eeprom_offset + (((eeprom_data & 0x00ff) << 3) << ((eeprom_data & 0x0100) >> 8)); eeprom_data = nes_read16_eeprom(nesdev->regs, next_section_address + 4); if (eeprom_data != 0x4f52) { nes_debug(NES_DBG_HW, "EEPROM Changed offset should be 0x4f52 but was 0x%04X\n", eeprom_data); goto no_fw_rev; } eeprom_offset = next_section_address; eeprom_data = nes_read16_eeprom(nesdev->regs, eeprom_offset + 2); nes_debug(NES_DBG_HW, "EEPROM Offset %u (next section) = 0x%04X\n", eeprom_offset + 2, eeprom_data); next_section_address = eeprom_offset + ((eeprom_data & 0x00ff) << 3); eeprom_data = nes_read16_eeprom(nesdev->regs, next_section_address + 4); if (eeprom_data != 0x5746) { nes_debug(NES_DBG_HW, "EEPROM Changed offset should be 0x5746 but was 0x%04X\n", eeprom_data); goto no_fw_rev; } eeprom_offset = next_section_address; eeprom_data = nes_read16_eeprom(nesdev->regs, eeprom_offset + 2); nes_debug(NES_DBG_HW, "EEPROM Offset %u (next section) = 0x%04X\n", eeprom_offset + 2, eeprom_data); next_section_address = eeprom_offset + ((eeprom_data & 0x00ff) << 3); eeprom_data = nes_read16_eeprom(nesdev->regs, next_section_address + 4); if (eeprom_data != 0x5753) { nes_debug(NES_DBG_HW, "EEPROM Changed offset should be 0x5753 but was 0x%04X\n", eeprom_data); goto no_fw_rev; } eeprom_offset = next_section_address; eeprom_data = nes_read16_eeprom(nesdev->regs, eeprom_offset + 2); nes_debug(NES_DBG_HW, "EEPROM Offset %u (next section) = 0x%04X\n", eeprom_offset + 2, eeprom_data); next_section_address = eeprom_offset + ((eeprom_data & 0x00ff) << 3); eeprom_data = nes_read16_eeprom(nesdev->regs, next_section_address + 4); if (eeprom_data != 0x414d) { nes_debug(NES_DBG_HW, "EEPROM Changed offset should be 0x414d but was 0x%04X\n", eeprom_data); goto no_fw_rev; } eeprom_offset = next_section_address; eeprom_data = nes_read16_eeprom(nesdev->regs, eeprom_offset + 2); nes_debug(NES_DBG_HW, "EEPROM Offset %u (next section) = 0x%04X\n", eeprom_offset + 2, eeprom_data); next_section_address = eeprom_offset + ((eeprom_data & 0x00ff) << 3); eeprom_data = nes_read16_eeprom(nesdev->regs, next_section_address + 4); if (eeprom_data != 0x464e) { nes_debug(NES_DBG_HW, "EEPROM Changed offset should be 0x464e but was 0x%04X\n", eeprom_data); goto no_fw_rev; } eeprom_data = nes_read16_eeprom(nesdev->regs, next_section_address + 8); printk(PFX "Firmware version %u.%u\n", (u8)(eeprom_data>>8), (u8)eeprom_data); major_ver = (u8)(eeprom_data >> 8); minor_ver = (u8)(eeprom_data); if (nes_drv_opt & NES_DRV_OPT_DISABLE_VIRT_WQ) { nes_debug(NES_DBG_HW, "Virtual WQs have been disabled\n"); } else if (((major_ver == 2) && (minor_ver > 21)) || ((major_ver > 2) && (major_ver != 255))) { nesadapter->virtwq = 1; } if (((major_ver == 3) && (minor_ver >= 16)) || (major_ver > 3)) nesadapter->send_term_ok = 1; if (nes_drv_opt & NES_DRV_OPT_ENABLE_PAU) { if (!nes_set_pau(nesdev)) nesadapter->allow_unaligned_fpdus = 1; } nesadapter->firmware_version = (((u32)(u8)(eeprom_data>>8)) << 16) + (u32)((u8)eeprom_data); eeprom_data = nes_read16_eeprom(nesdev->regs, next_section_address + 10); printk(PFX "EEPROM version %u.%u\n", (u8)(eeprom_data>>8), (u8)eeprom_data); nesadapter->eeprom_version = (((u32)(u8)(eeprom_data>>8)) << 16) + (u32)((u8)eeprom_data); no_fw_rev: /* eeprom is valid */ eeprom_offset = nesadapter->software_eeprom_offset; eeprom_offset += 8; nesadapter->netdev_max = (u8)nes_read16_eeprom(nesdev->regs, eeprom_offset); eeprom_offset += 2; mac_addr_high = nes_read16_eeprom(nesdev->regs, eeprom_offset); eeprom_offset += 2; mac_addr_low = (u32)nes_read16_eeprom(nesdev->regs, eeprom_offset); eeprom_offset += 2; mac_addr_low <<= 16; mac_addr_low += (u32)nes_read16_eeprom(nesdev->regs, eeprom_offset); nes_debug(NES_DBG_HW, "Base MAC Address = 0x%04X%08X\n", mac_addr_high, mac_addr_low); nes_debug(NES_DBG_HW, "MAC Address count = %u\n", nesadapter->netdev_max); nesadapter->mac_addr_low = mac_addr_low; nesadapter->mac_addr_high = mac_addr_high; /* Read the Phy Type array */ eeprom_offset += 10; eeprom_data = nes_read16_eeprom(nesdev->regs, eeprom_offset); nesadapter->phy_type[0] = (u8)(eeprom_data >> 8); nesadapter->phy_type[1] = (u8)eeprom_data; /* Read the port array */ eeprom_offset += 2; eeprom_data = nes_read16_eeprom(nesdev->regs, eeprom_offset); nesadapter->phy_type[2] = (u8)(eeprom_data >> 8); nesadapter->phy_type[3] = (u8)eeprom_data; /* port_count is set by soft reset reg */ nes_debug(NES_DBG_HW, "port_count = %u, port 0 -> %u, port 1 -> %u," " port 2 -> %u, port 3 -> %u\n", nesadapter->port_count, nesadapter->phy_type[0], nesadapter->phy_type[1], nesadapter->phy_type[2], nesadapter->phy_type[3]); /* Read PD config array */ eeprom_offset += 10; eeprom_data = nes_read16_eeprom(nesdev->regs, eeprom_offset); nesadapter->pd_config_size[0] = eeprom_data; eeprom_offset += 2; eeprom_data = nes_read16_eeprom(nesdev->regs, eeprom_offset); nesadapter->pd_config_base[0] = eeprom_data; nes_debug(NES_DBG_HW, "PD0 config, size=0x%04x, base=0x%04x\n", nesadapter->pd_config_size[0], nesadapter->pd_config_base[0]); eeprom_offset += 2; eeprom_data = nes_read16_eeprom(nesdev->regs, eeprom_offset); nesadapter->pd_config_size[1] = eeprom_data; eeprom_offset += 2; eeprom_data = nes_read16_eeprom(nesdev->regs, eeprom_offset); nesadapter->pd_config_base[1] = eeprom_data; nes_debug(NES_DBG_HW, "PD1 config, size=0x%04x, base=0x%04x\n", nesadapter->pd_config_size[1], nesadapter->pd_config_base[1]); eeprom_offset += 2; eeprom_data = nes_read16_eeprom(nesdev->regs, eeprom_offset); nesadapter->pd_config_size[2] = eeprom_data; eeprom_offset += 2; eeprom_data = nes_read16_eeprom(nesdev->regs, eeprom_offset); nesadapter->pd_config_base[2] = eeprom_data; nes_debug(NES_DBG_HW, "PD2 config, size=0x%04x, base=0x%04x\n", nesadapter->pd_config_size[2], nesadapter->pd_config_base[2]); eeprom_offset += 2; eeprom_data = nes_read16_eeprom(nesdev->regs, eeprom_offset); nesadapter->pd_config_size[3] = eeprom_data; eeprom_offset += 2; eeprom_data = nes_read16_eeprom(nesdev->regs, eeprom_offset); nesadapter->pd_config_base[3] = eeprom_data; nes_debug(NES_DBG_HW, "PD3 config, size=0x%04x, base=0x%04x\n", nesadapter->pd_config_size[3], nesadapter->pd_config_base[3]); /* Read Rx Pool Size */ eeprom_offset += 22; /* 46 */ eeprom_data = nes_read16_eeprom(nesdev->regs, eeprom_offset); eeprom_offset += 2; nesadapter->rx_pool_size = (((u32)eeprom_data) << 16) + nes_read16_eeprom(nesdev->regs, eeprom_offset); nes_debug(NES_DBG_HW, "rx_pool_size = 0x%08X\n", nesadapter->rx_pool_size); eeprom_offset += 2; eeprom_data = nes_read16_eeprom(nesdev->regs, eeprom_offset); eeprom_offset += 2; nesadapter->tx_pool_size = (((u32)eeprom_data) << 16) + nes_read16_eeprom(nesdev->regs, eeprom_offset); nes_debug(NES_DBG_HW, "tx_pool_size = 0x%08X\n", nesadapter->tx_pool_size); eeprom_offset += 2; eeprom_data = nes_read16_eeprom(nesdev->regs, eeprom_offset); eeprom_offset += 2; nesadapter->rx_threshold = (((u32)eeprom_data) << 16) + nes_read16_eeprom(nesdev->regs, eeprom_offset); nes_debug(NES_DBG_HW, "rx_threshold = 0x%08X\n", nesadapter->rx_threshold); eeprom_offset += 2; eeprom_data = nes_read16_eeprom(nesdev->regs, eeprom_offset); eeprom_offset += 2; nesadapter->tcp_timer_core_clk_divisor = (((u32)eeprom_data) << 16) + nes_read16_eeprom(nesdev->regs, eeprom_offset); nes_debug(NES_DBG_HW, "tcp_timer_core_clk_divisor = 0x%08X\n", nesadapter->tcp_timer_core_clk_divisor); eeprom_offset += 2; eeprom_data = nes_read16_eeprom(nesdev->regs, eeprom_offset); eeprom_offset += 2; nesadapter->iwarp_config = (((u32)eeprom_data) << 16) + nes_read16_eeprom(nesdev->regs, eeprom_offset); nes_debug(NES_DBG_HW, "iwarp_config = 0x%08X\n", nesadapter->iwarp_config); eeprom_offset += 2; eeprom_data = nes_read16_eeprom(nesdev->regs, eeprom_offset); eeprom_offset += 2; nesadapter->cm_config = (((u32)eeprom_data) << 16) + nes_read16_eeprom(nesdev->regs, eeprom_offset); nes_debug(NES_DBG_HW, "cm_config = 0x%08X\n", nesadapter->cm_config); eeprom_offset += 2; eeprom_data = nes_read16_eeprom(nesdev->regs, eeprom_offset); eeprom_offset += 2; nesadapter->sws_timer_config = (((u32)eeprom_data) << 16) + nes_read16_eeprom(nesdev->regs, eeprom_offset); nes_debug(NES_DBG_HW, "sws_timer_config = 0x%08X\n", nesadapter->sws_timer_config); eeprom_offset += 2; eeprom_data = nes_read16_eeprom(nesdev->regs, eeprom_offset); eeprom_offset += 2; nesadapter->tcp_config1 = (((u32)eeprom_data) << 16) + nes_read16_eeprom(nesdev->regs, eeprom_offset); nes_debug(NES_DBG_HW, "tcp_config1 = 0x%08X\n", nesadapter->tcp_config1); eeprom_offset += 2; eeprom_data = nes_read16_eeprom(nesdev->regs, eeprom_offset); eeprom_offset += 2; nesadapter->wqm_wat = (((u32)eeprom_data) << 16) + nes_read16_eeprom(nesdev->regs, eeprom_offset); nes_debug(NES_DBG_HW, "wqm_wat = 0x%08X\n", nesadapter->wqm_wat); eeprom_offset += 2; eeprom_data = nes_read16_eeprom(nesdev->regs, eeprom_offset); eeprom_offset += 2; nesadapter->core_clock = (((u32)eeprom_data) << 16) + nes_read16_eeprom(nesdev->regs, eeprom_offset); nes_debug(NES_DBG_HW, "core_clock = 0x%08X\n", nesadapter->core_clock); if ((sw_section_ver) && (nesadapter->hw_rev != NE020_REV)) { eeprom_offset += 2; eeprom_data = nes_read16_eeprom(nesdev->regs, eeprom_offset); nesadapter->phy_index[0] = (eeprom_data & 0xff00)>>8; nesadapter->phy_index[1] = eeprom_data & 0x00ff; eeprom_offset += 2; eeprom_data = nes_read16_eeprom(nesdev->regs, eeprom_offset); nesadapter->phy_index[2] = (eeprom_data & 0xff00)>>8; nesadapter->phy_index[3] = eeprom_data & 0x00ff; } else { nesadapter->phy_index[0] = 4; nesadapter->phy_index[1] = 5; nesadapter->phy_index[2] = 6; nesadapter->phy_index[3] = 7; } nes_debug(NES_DBG_HW, "Phy address map = 0 > %u, 1 > %u, 2 > %u, 3 > %u\n", nesadapter->phy_index[0],nesadapter->phy_index[1], nesadapter->phy_index[2],nesadapter->phy_index[3]); } return 0; } /** * nes_read16_eeprom */ static u16 nes_read16_eeprom(void __iomem *addr, u16 offset) { writel(NES_EEPROM_READ_REQUEST + (offset >> 1), (void __iomem *)addr + NES_EEPROM_COMMAND); do { } while (readl((void __iomem *)addr + NES_EEPROM_COMMAND) & NES_EEPROM_READ_REQUEST); return readw((void __iomem *)addr + NES_EEPROM_DATA); } /** * nes_write_1G_phy_reg */ void nes_write_1G_phy_reg(struct nes_device *nesdev, u8 phy_reg, u8 phy_addr, u16 data) { u32 u32temp; u32 counter; nes_write_indexed(nesdev, NES_IDX_MAC_MDIO_CONTROL, 0x50020000 | data | ((u32)phy_reg << 18) | ((u32)phy_addr << 23)); for (counter = 0; counter < 100 ; counter++) { udelay(30); u32temp = nes_read_indexed(nesdev, NES_IDX_MAC_INT_STATUS); if (u32temp & 1) { /* nes_debug(NES_DBG_PHY, "Phy interrupt status = 0x%X.\n", u32temp); */ nes_write_indexed(nesdev, NES_IDX_MAC_INT_STATUS, 1); break; } } if (!(u32temp & 1)) nes_debug(NES_DBG_PHY, "Phy is not responding. interrupt status = 0x%X.\n", u32temp); } /** * nes_read_1G_phy_reg * This routine only issues the read, the data must be read * separately. */ void nes_read_1G_phy_reg(struct nes_device *nesdev, u8 phy_reg, u8 phy_addr, u16 *data) { u32 u32temp; u32 counter; /* nes_debug(NES_DBG_PHY, "phy addr = %d, mac_index = %d\n", phy_addr, nesdev->mac_index); */ nes_write_indexed(nesdev, NES_IDX_MAC_MDIO_CONTROL, 0x60020000 | ((u32)phy_reg << 18) | ((u32)phy_addr << 23)); for (counter = 0; counter < 100 ; counter++) { udelay(30); u32temp = nes_read_indexed(nesdev, NES_IDX_MAC_INT_STATUS); if (u32temp & 1) { /* nes_debug(NES_DBG_PHY, "Phy interrupt status = 0x%X.\n", u32temp); */ nes_write_indexed(nesdev, NES_IDX_MAC_INT_STATUS, 1); break; } } if (!(u32temp & 1)) { nes_debug(NES_DBG_PHY, "Phy is not responding. interrupt status = 0x%X.\n", u32temp); *data = 0xffff; } else { *data = (u16)nes_read_indexed(nesdev, NES_IDX_MAC_MDIO_CONTROL); } } /** * nes_write_10G_phy_reg */ void nes_write_10G_phy_reg(struct nes_device *nesdev, u16 phy_addr, u8 dev_addr, u16 phy_reg, u16 data) { u32 port_addr; u32 u32temp; u32 counter; port_addr = phy_addr; /* set address */ nes_write_indexed(nesdev, NES_IDX_MAC_MDIO_CONTROL, 0x00020000 | (u32)phy_reg | (((u32)dev_addr) << 18) | (((u32)port_addr) << 23)); for (counter = 0; counter < 100 ; counter++) { udelay(30); u32temp = nes_read_indexed(nesdev, NES_IDX_MAC_INT_STATUS); if (u32temp & 1) { nes_write_indexed(nesdev, NES_IDX_MAC_INT_STATUS, 1); break; } } if (!(u32temp & 1)) nes_debug(NES_DBG_PHY, "Phy is not responding. interrupt status = 0x%X.\n", u32temp); /* set data */ nes_write_indexed(nesdev, NES_IDX_MAC_MDIO_CONTROL, 0x10020000 | (u32)data | (((u32)dev_addr) << 18) | (((u32)port_addr) << 23)); for (counter = 0; counter < 100 ; counter++) { udelay(30); u32temp = nes_read_indexed(nesdev, NES_IDX_MAC_INT_STATUS); if (u32temp & 1) { nes_write_indexed(nesdev, NES_IDX_MAC_INT_STATUS, 1); break; } } if (!(u32temp & 1)) nes_debug(NES_DBG_PHY, "Phy is not responding. interrupt status = 0x%X.\n", u32temp); } /** * nes_read_10G_phy_reg * This routine only issues the read, the data must be read * separately. */ void nes_read_10G_phy_reg(struct nes_device *nesdev, u8 phy_addr, u8 dev_addr, u16 phy_reg) { u32 port_addr; u32 u32temp; u32 counter; port_addr = phy_addr; /* set address */ nes_write_indexed(nesdev, NES_IDX_MAC_MDIO_CONTROL, 0x00020000 | (u32)phy_reg | (((u32)dev_addr) << 18) | (((u32)port_addr) << 23)); for (counter = 0; counter < 100 ; counter++) { udelay(30); u32temp = nes_read_indexed(nesdev, NES_IDX_MAC_INT_STATUS); if (u32temp & 1) { nes_write_indexed(nesdev, NES_IDX_MAC_INT_STATUS, 1); break; } } if (!(u32temp & 1)) nes_debug(NES_DBG_PHY, "Phy is not responding. interrupt status = 0x%X.\n", u32temp); /* issue read */ nes_write_indexed(nesdev, NES_IDX_MAC_MDIO_CONTROL, 0x30020000 | (((u32)dev_addr) << 18) | (((u32)port_addr) << 23)); for (counter = 0; counter < 100 ; counter++) { udelay(30); u32temp = nes_read_indexed(nesdev, NES_IDX_MAC_INT_STATUS); if (u32temp & 1) { nes_write_indexed(nesdev, NES_IDX_MAC_INT_STATUS, 1); break; } } if (!(u32temp & 1)) nes_debug(NES_DBG_PHY, "Phy is not responding. interrupt status = 0x%X.\n", u32temp); } /** * nes_get_cqp_request */ struct nes_cqp_request *nes_get_cqp_request(struct nes_device *nesdev) { unsigned long flags; struct nes_cqp_request *cqp_request = NULL; if (!list_empty(&nesdev->cqp_avail_reqs)) { spin_lock_irqsave(&nesdev->cqp.lock, flags); if (!list_empty(&nesdev->cqp_avail_reqs)) { cqp_request = list_entry(nesdev->cqp_avail_reqs.next, struct nes_cqp_request, list); list_del_init(&cqp_request->list); } spin_unlock_irqrestore(&nesdev->cqp.lock, flags); } if (cqp_request == NULL) { cqp_request = kzalloc(sizeof(struct nes_cqp_request), GFP_ATOMIC); if (cqp_request) { cqp_request->dynamic = 1; INIT_LIST_HEAD(&cqp_request->list); } } if (cqp_request) { init_waitqueue_head(&cqp_request->waitq); cqp_request->waiting = 0; cqp_request->request_done = 0; cqp_request->callback = 0; init_waitqueue_head(&cqp_request->waitq); nes_debug(NES_DBG_CQP, "Got cqp request %p from the available list \n", cqp_request); } else printk(KERN_ERR PFX "%s: Could not allocated a CQP request.\n", __func__); return cqp_request; } void nes_free_cqp_request(struct nes_device *nesdev, struct nes_cqp_request *cqp_request) { unsigned long flags; nes_debug(NES_DBG_CQP, "CQP request %p (opcode 0x%02X) freed.\n", cqp_request, le32_to_cpu(cqp_request->cqp_wqe.wqe_words[NES_CQP_WQE_OPCODE_IDX]) & 0x3f); if (cqp_request->dynamic) { kfree(cqp_request); } else { spin_lock_irqsave(&nesdev->cqp.lock, flags); list_add_tail(&cqp_request->list, &nesdev->cqp_avail_reqs); spin_unlock_irqrestore(&nesdev->cqp.lock, flags); } } void nes_put_cqp_request(struct nes_device *nesdev, struct nes_cqp_request *cqp_request) { if (atomic_dec_and_test(&cqp_request->refcount)) nes_free_cqp_request(nesdev, cqp_request); } /** * nes_post_cqp_request */ void nes_post_cqp_request(struct nes_device *nesdev, struct nes_cqp_request *cqp_request) { struct nes_hw_cqp_wqe *cqp_wqe; unsigned long flags; u32 cqp_head; u64 u64temp; u32 opcode; int ctx_index = NES_CQP_WQE_COMP_CTX_LOW_IDX; spin_lock_irqsave(&nesdev->cqp.lock, flags); if (((((nesdev->cqp.sq_tail+(nesdev->cqp.sq_size*2))-nesdev->cqp.sq_head) & (nesdev->cqp.sq_size - 1)) != 1) && (list_empty(&nesdev->cqp_pending_reqs))) { cqp_head = nesdev->cqp.sq_head++; nesdev->cqp.sq_head &= nesdev->cqp.sq_size-1; cqp_wqe = &nesdev->cqp.sq_vbase[cqp_head]; memcpy(cqp_wqe, &cqp_request->cqp_wqe, sizeof(*cqp_wqe)); opcode = le32_to_cpu(cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX]); if ((opcode & NES_CQP_OPCODE_MASK) == NES_CQP_DOWNLOAD_SEGMENT) ctx_index = NES_CQP_WQE_DL_COMP_CTX_LOW_IDX; barrier(); u64temp = (unsigned long)cqp_request; set_wqe_64bit_value(cqp_wqe->wqe_words, ctx_index, u64temp); nes_debug(NES_DBG_CQP, "CQP request (opcode 0x%02X), line 1 = 0x%08X put on CQPs SQ," " request = %p, cqp_head = %u, cqp_tail = %u, cqp_size = %u," " waiting = %d, refcount = %d.\n", opcode & NES_CQP_OPCODE_MASK, le32_to_cpu(cqp_wqe->wqe_words[NES_CQP_WQE_ID_IDX]), cqp_request, nesdev->cqp.sq_head, nesdev->cqp.sq_tail, nesdev->cqp.sq_size, cqp_request->waiting, atomic_read(&cqp_request->refcount)); barrier(); /* Ring doorbell (1 WQEs) */ nes_write32(nesdev->regs+NES_WQE_ALLOC, 0x01800000 | nesdev->cqp.qp_id); barrier(); } else { nes_debug(NES_DBG_CQP, "CQP request %p (opcode 0x%02X), line 1 = 0x%08X" " put on the pending queue.\n", cqp_request, le32_to_cpu(cqp_request->cqp_wqe.wqe_words[NES_CQP_WQE_OPCODE_IDX])&0x3f, le32_to_cpu(cqp_request->cqp_wqe.wqe_words[NES_CQP_WQE_ID_IDX])); list_add_tail(&cqp_request->list, &nesdev->cqp_pending_reqs); } spin_unlock_irqrestore(&nesdev->cqp.lock, flags); return; } /** * nes_arp_table */ int nes_arp_table(struct nes_device *nesdev, u32 ip_addr, u8 *mac_addr, u32 action) { struct nes_adapter *nesadapter = nesdev->nesadapter; int arp_index; int err = 0; __be32 tmp_addr; for (arp_index = 0; (u32) arp_index < nesadapter->arp_table_size; arp_index++) { if (nesadapter->arp_table[arp_index].ip_addr == ip_addr) break; } if (action == NES_ARP_ADD) { if (arp_index != nesadapter->arp_table_size) { return -1; } arp_index = 0; err = nes_alloc_resource(nesadapter, nesadapter->allocated_arps, nesadapter->arp_table_size, (u32 *)&arp_index, &nesadapter->next_arp_index, NES_RESOURCE_ARP); if (err) { nes_debug(NES_DBG_NETDEV, "nes_alloc_resource returned error = %u\n", err); return err; } nes_debug(NES_DBG_NETDEV, "ADD, arp_index=%d\n", arp_index); nesadapter->arp_table[arp_index].ip_addr = ip_addr; memcpy(nesadapter->arp_table[arp_index].mac_addr, mac_addr, ETH_ALEN); return arp_index; } /* DELETE or RESOLVE */ if (arp_index == nesadapter->arp_table_size) { tmp_addr = cpu_to_be32(ip_addr); nes_debug(NES_DBG_NETDEV, "MAC for %pI4 not in ARP table - cannot %s\n", &tmp_addr, action == NES_ARP_RESOLVE ? "resolve" : "delete"); return -1; } if (action == NES_ARP_RESOLVE) { nes_debug(NES_DBG_NETDEV, "RESOLVE, arp_index=%d\n", arp_index); return arp_index; } if (action == NES_ARP_DELETE) { nes_debug(NES_DBG_NETDEV, "DELETE, arp_index=%d\n", arp_index); nesadapter->arp_table[arp_index].ip_addr = 0; eth_zero_addr(nesadapter->arp_table[arp_index].mac_addr); nes_free_resource(nesadapter, nesadapter->allocated_arps, arp_index); return arp_index; } return -1; } /** * nes_mh_fix */ void nes_mh_fix(struct timer_list *t) { struct nes_adapter *nesadapter = from_timer(nesadapter, t, mh_timer); struct nes_device *nesdev = nesadapter->nesdev; unsigned long flags; struct nes_vnic *nesvnic; u32 used_chunks_tx; u32 temp_used_chunks_tx; u32 temp_last_used_chunks_tx; u32 used_chunks_mask; u32 mac_tx_frames_low; u32 mac_tx_frames_high; u32 mac_tx_pauses; u32 reset_value; u32 tx_control; u32 tx_config; u32 tx_pause_quanta; u32 rx_control; u32 rx_config; u32 mac_exact_match; u32 mpp_debug; u32 i=0; u32 chunks_tx_progress = 0; spin_lock_irqsave(&nesadapter->phy_lock, flags); if ((nesadapter->mac_sw_state[0] != NES_MAC_SW_IDLE) || (nesadapter->mac_link_down[0])) { spin_unlock_irqrestore(&nesadapter->phy_lock, flags); goto no_mh_work; } nesadapter->mac_sw_state[0] = NES_MAC_SW_MH; spin_unlock_irqrestore(&nesadapter->phy_lock, flags); do { mac_tx_frames_low = nes_read_indexed(nesdev, NES_IDX_MAC_TX_FRAMES_LOW); mac_tx_frames_high = nes_read_indexed(nesdev, NES_IDX_MAC_TX_FRAMES_HIGH); mac_tx_pauses = nes_read_indexed(nesdev, NES_IDX_MAC_TX_PAUSE_FRAMES); used_chunks_tx = nes_read_indexed(nesdev, NES_IDX_USED_CHUNKS_TX); nesdev->mac_pause_frames_sent += mac_tx_pauses; used_chunks_mask = 0; temp_used_chunks_tx = used_chunks_tx; temp_last_used_chunks_tx = nesdev->last_used_chunks_tx; if (nesdev->netdev[0]) { nesvnic = netdev_priv(nesdev->netdev[0]); } else { break; } for (i=0; i<4; i++) { used_chunks_mask <<= 8; if (nesvnic->qp_nic_index[i] != 0xff) { used_chunks_mask |= 0xff; if ((temp_used_chunks_tx&0xff)<(temp_last_used_chunks_tx&0xff)) { chunks_tx_progress = 1; } } temp_used_chunks_tx >>= 8; temp_last_used_chunks_tx >>= 8; } if ((mac_tx_frames_low) || (mac_tx_frames_high) || (!(used_chunks_tx&used_chunks_mask)) || (!(nesdev->last_used_chunks_tx&used_chunks_mask)) || (chunks_tx_progress) ) { nesdev->last_used_chunks_tx = used_chunks_tx; break; } nesdev->last_used_chunks_tx = used_chunks_tx; barrier(); nes_write_indexed(nesdev, NES_IDX_MAC_TX_CONTROL, 0x00000005); mh_pauses_sent++; mac_tx_pauses = nes_read_indexed(nesdev, NES_IDX_MAC_TX_PAUSE_FRAMES); if (mac_tx_pauses) { nesdev->mac_pause_frames_sent += mac_tx_pauses; break; } tx_control = nes_read_indexed(nesdev, NES_IDX_MAC_TX_CONTROL); tx_config = nes_read_indexed(nesdev, NES_IDX_MAC_TX_CONFIG); tx_pause_quanta = nes_read_indexed(nesdev, NES_IDX_MAC_TX_PAUSE_QUANTA); rx_control = nes_read_indexed(nesdev, NES_IDX_MAC_RX_CONTROL); rx_config = nes_read_indexed(nesdev, NES_IDX_MAC_RX_CONFIG); mac_exact_match = nes_read_indexed(nesdev, NES_IDX_MAC_EXACT_MATCH_BOTTOM); mpp_debug = nes_read_indexed(nesdev, NES_IDX_MPP_DEBUG); /* one last ditch effort to avoid a false positive */ mac_tx_pauses = nes_read_indexed(nesdev, NES_IDX_MAC_TX_PAUSE_FRAMES); if (mac_tx_pauses) { nesdev->last_mac_tx_pauses = nesdev->mac_pause_frames_sent; nes_debug(NES_DBG_HW, "failsafe caught slow outbound pause\n"); break; } mh_detected++; nes_write_indexed(nesdev, NES_IDX_MAC_TX_CONTROL, 0x00000000); nes_write_indexed(nesdev, NES_IDX_MAC_TX_CONFIG, 0x00000000); reset_value = nes_read32(nesdev->regs+NES_SOFTWARE_RESET); nes_write32(nesdev->regs+NES_SOFTWARE_RESET, reset_value | 0x0000001d); while (((nes_read32(nesdev->regs+NES_SOFTWARE_RESET) & 0x00000040) != 0x00000040) && (i++ < 5000)) { /* mdelay(1); */ } nes_write_indexed(nesdev, NES_IDX_ETH_SERDES_COMMON_CONTROL0, 0x00000008); nes_read_indexed(nesdev, NES_IDX_ETH_SERDES_COMMON_STATUS0); nes_write_indexed(nesdev, NES_IDX_ETH_SERDES_TX_EMP0, 0x000bdef7); nes_write_indexed(nesdev, NES_IDX_ETH_SERDES_TX_DRIVE0, 0x9ce73000); nes_write_indexed(nesdev, NES_IDX_ETH_SERDES_RX_MODE0, 0x0ff00000); nes_write_indexed(nesdev, NES_IDX_ETH_SERDES_RX_SIGDET0, 0x00000000); nes_write_indexed(nesdev, NES_IDX_ETH_SERDES_BYPASS0, 0x00000000); nes_write_indexed(nesdev, NES_IDX_ETH_SERDES_LOOPBACK_CONTROL0, 0x00000000); if (nesadapter->OneG_Mode) { nes_write_indexed(nesdev, NES_IDX_ETH_SERDES_RX_EQ_CONTROL0, 0xf0182222); } else { nes_write_indexed(nesdev, NES_IDX_ETH_SERDES_RX_EQ_CONTROL0, 0xf0042222); } nes_read_indexed(nesdev, NES_IDX_ETH_SERDES_RX_EQ_STATUS0); nes_write_indexed(nesdev, NES_IDX_ETH_SERDES_CDR_CONTROL0, 0x000000ff); nes_write_indexed(nesdev, NES_IDX_MAC_TX_CONTROL, tx_control); nes_write_indexed(nesdev, NES_IDX_MAC_TX_CONFIG, tx_config); nes_write_indexed(nesdev, NES_IDX_MAC_TX_PAUSE_QUANTA, tx_pause_quanta); nes_write_indexed(nesdev, NES_IDX_MAC_RX_CONTROL, rx_control); nes_write_indexed(nesdev, NES_IDX_MAC_RX_CONFIG, rx_config); nes_write_indexed(nesdev, NES_IDX_MAC_EXACT_MATCH_BOTTOM, mac_exact_match); nes_write_indexed(nesdev, NES_IDX_MPP_DEBUG, mpp_debug); } while (0); nesadapter->mac_sw_state[0] = NES_MAC_SW_IDLE; no_mh_work: nesdev->nesadapter->mh_timer.expires = jiffies + (HZ/5); add_timer(&nesdev->nesadapter->mh_timer); } /** * nes_clc */ void nes_clc(struct timer_list *t) { struct nes_adapter *nesadapter = from_timer(nesadapter, t, lc_timer); unsigned long flags; spin_lock_irqsave(&nesadapter->phy_lock, flags); nesadapter->link_interrupt_count[0] = 0; nesadapter->link_interrupt_count[1] = 0; nesadapter->link_interrupt_count[2] = 0; nesadapter->link_interrupt_count[3] = 0; spin_unlock_irqrestore(&nesadapter->phy_lock, flags); nesadapter->lc_timer.expires = jiffies + 3600 * HZ; /* 1 hour */ add_timer(&nesadapter->lc_timer); } /** * nes_dump_mem */ void nes_dump_mem(unsigned int dump_debug_level, void *addr, int length) { if (!(nes_debug_level & dump_debug_level)) { return; } if (length > 0x100) { nes_debug(dump_debug_level, "Length truncated from %x to %x\n", length, 0x100); length = 0x100; } nes_debug(dump_debug_level, "Address=0x%p, length=0x%x (%d)\n", addr, length, length); print_hex_dump(KERN_ERR, PFX, DUMP_PREFIX_NONE, 16, 1, addr, length, true); }