Angel Pons | 8a3453f | 2020-04-02 23:48:19 +0200 | [diff] [blame] | 1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
Arthur Heymans | 7f922b0 | 2018-08-22 02:14:04 +0200 | [diff] [blame] | 2 | |
| 3 | /* |
| 4 | * This driver sets the macaddress of a Atheros AR8121/AR8113/AR8114 |
| 5 | */ |
| 6 | |
Kyösti Mälkki | 13f6650 | 2019-03-03 08:01:05 +0200 | [diff] [blame] | 7 | #include <device/mmio.h> |
Arthur Heymans | 7f922b0 | 2018-08-22 02:14:04 +0200 | [diff] [blame] | 8 | #include <device/device.h> |
| 9 | #include <cbfs.h> |
Arthur Heymans | 7f922b0 | 2018-08-22 02:14:04 +0200 | [diff] [blame] | 10 | #include <console/console.h> |
| 11 | #include <device/pci.h> |
Kyösti Mälkki | f1b58b7 | 2019-03-01 13:43:02 +0200 | [diff] [blame] | 12 | #include <device/pci_ops.h> |
Elyes HAOUAS | bd1683d | 2019-05-15 21:05:37 +0200 | [diff] [blame] | 13 | #include <types.h> |
Arthur Heymans | 7f922b0 | 2018-08-22 02:14:04 +0200 | [diff] [blame] | 14 | |
| 15 | #define REG_SPI_FLASH_CTRL 0x200 |
| 16 | #define SPI_FLASH_CTRL_EN_VPD 0x2000 |
| 17 | |
| 18 | #define REG_PCIE_CAP_LIST 0x58 |
| 19 | |
| 20 | #define REG_MAC_STA_ADDR 0x1488 |
| 21 | |
| 22 | static u8 get_hex_digit(const u8 c) |
| 23 | { |
| 24 | u8 ret = 0; |
| 25 | |
| 26 | ret = c - '0'; |
| 27 | if (ret > 0x09) { |
| 28 | ret = c - 'A' + 0x0a; |
| 29 | if (ret > 0x0f) |
| 30 | ret = c - 'a' + 0x0a; |
| 31 | } |
| 32 | if (ret > 0x0f) { |
| 33 | printk(BIOS_ERR, "Error: Invalid hex digit found: " |
| 34 | "%c - 0x%02x\n", (char)c, c); |
| 35 | ret = 0; |
| 36 | } |
| 37 | return ret; |
| 38 | } |
| 39 | |
| 40 | #define MACLEN 17 |
| 41 | |
| 42 | static enum cb_err fetch_mac_string_cbfs(u8 *macstrbuf) |
| 43 | { |
Julius Werner | 77639e4 | 2021-02-05 16:51:25 -0800 | [diff] [blame] | 44 | if (!cbfs_load("atl1e-macaddress", macstrbuf, MACLEN)) { |
| 45 | printk(BIOS_ERR, "atl1e: Error reading MAC from CBFS\n"); |
| 46 | return CB_ERR; |
Arthur Heymans | 7f922b0 | 2018-08-22 02:14:04 +0200 | [diff] [blame] | 47 | } |
Julius Werner | 77639e4 | 2021-02-05 16:51:25 -0800 | [diff] [blame] | 48 | return CB_SUCCESS; |
Arthur Heymans | 7f922b0 | 2018-08-22 02:14:04 +0200 | [diff] [blame] | 49 | } |
| 50 | |
| 51 | static void get_mac_address(u8 *macaddr, const u8 *strbuf) |
| 52 | { |
| 53 | size_t offset = 0; |
| 54 | int i; |
| 55 | |
| 56 | if ((strbuf[2] != ':') || (strbuf[5] != ':') || |
| 57 | (strbuf[8] != ':') || (strbuf[11] != ':') || |
| 58 | (strbuf[14] != ':')) { |
| 59 | printk(BIOS_ERR, "atl1e: ignore invalid MAC address in cbfs\n"); |
| 60 | return; |
| 61 | } |
| 62 | |
| 63 | for (i = 0; i < 6; i++) { |
| 64 | macaddr[i] = 0; |
| 65 | macaddr[i] |= get_hex_digit(strbuf[offset]) << 4; |
| 66 | macaddr[i] |= get_hex_digit(strbuf[offset + 1]); |
| 67 | offset += 3; |
| 68 | } |
| 69 | } |
| 70 | |
| 71 | static void program_mac_address(u32 mem_base) |
| 72 | { |
| 73 | u8 macstrbuf[MACLEN] = { 0 }; |
| 74 | /* Default MAC Address of 90:e6:ba:24:f9:d2 */ |
| 75 | u8 mac[6] = { 0x90, 0xe6, 0xba, 0x24, 0xf9, 0xd2 }; |
| 76 | u32 value; |
| 77 | |
| 78 | if (fetch_mac_string_cbfs(macstrbuf) != CB_SUCCESS) { |
| 79 | printk(BIOS_ERR, "atl1e: Error reading MAC from CBFS," |
| 80 | " using default 90:e6:ba:24:f9:d2\n"); |
| 81 | } else { |
| 82 | get_mac_address(mac, macstrbuf); |
| 83 | } |
| 84 | |
| 85 | printk(BIOS_DEBUG, "atl1e: Programming MAC Address..."); |
| 86 | |
| 87 | value = (mac[2] << 24) | (mac[3] << 16) | (mac[4] << 8) | (mac[5] << 0); |
| 88 | write32((void *)mem_base + REG_MAC_STA_ADDR, value); |
| 89 | value = (mac[0] << 8) | (mac[1] << 0); |
| 90 | write32((void *)mem_base + REG_MAC_STA_ADDR + 4, value); |
| 91 | |
| 92 | printk(BIOS_DEBUG, "done\n"); |
| 93 | } |
| 94 | |
| 95 | static int atl1e_eeprom_exist(u32 mem_base) |
| 96 | { |
| 97 | u32 value = read32((void *)mem_base + REG_SPI_FLASH_CTRL); |
| 98 | if (value & SPI_FLASH_CTRL_EN_VPD) { |
| 99 | value &= ~SPI_FLASH_CTRL_EN_VPD; |
| 100 | write32((void *)mem_base + REG_SPI_FLASH_CTRL, value); |
| 101 | } |
| 102 | value = read32((void *)mem_base + REG_PCIE_CAP_LIST); |
| 103 | return ((value & 0xff00) == 0x6c00) ? 1 : 0; |
| 104 | } |
| 105 | |
| 106 | static void atl1e_init(struct device *dev) |
| 107 | { |
| 108 | /* Get the resource of the NIC mmio */ |
Angel Pons | e058841 | 2021-11-03 13:22:22 +0100 | [diff] [blame] | 109 | struct resource *nic_res = probe_resource(dev, PCI_BASE_ADDRESS_0); |
Arthur Heymans | 7f922b0 | 2018-08-22 02:14:04 +0200 | [diff] [blame] | 110 | |
| 111 | if (nic_res == NULL) { |
| 112 | printk(BIOS_ERR, "atl1e: resource not found\n"); |
| 113 | return; |
| 114 | } |
| 115 | |
| 116 | u32 mem_base = nic_res->base; |
| 117 | |
| 118 | if (!mem_base) { |
| 119 | printk(BIOS_ERR, "atl1e: resource not assigned\n"); |
| 120 | return; |
| 121 | } |
| 122 | |
| 123 | if (atl1e_eeprom_exist(mem_base)) { |
| 124 | printk(BIOS_INFO, "atl1e NIC has SPI eeprom, not setting MAC\n"); |
| 125 | return; |
| 126 | } |
| 127 | |
| 128 | /* Check if the base is invalid */ |
| 129 | if (!mem_base) { |
Martin Roth | 0949e73 | 2021-10-01 14:28:22 -0600 | [diff] [blame] | 130 | printk(BIOS_ERR, "atl1e: Error can't find MEM resource\n"); |
Arthur Heymans | 7f922b0 | 2018-08-22 02:14:04 +0200 | [diff] [blame] | 131 | return; |
| 132 | } |
| 133 | /* Enable but do not set bus master */ |
| 134 | pci_write_config16(dev, PCI_COMMAND, |
| 135 | PCI_COMMAND_MEMORY | PCI_COMMAND_IO); |
| 136 | |
| 137 | /* Program MAC address based on CBFS "macaddress" containing |
| 138 | * a string AA:BB:CC:DD:EE:FF */ |
| 139 | program_mac_address(mem_base); |
| 140 | } |
| 141 | |
| 142 | static struct device_operations atl1e_ops = { |
| 143 | .read_resources = pci_dev_read_resources, |
| 144 | .set_resources = pci_dev_set_resources, |
| 145 | .enable_resources = pci_dev_enable_resources, |
| 146 | .init = atl1e_init, |
Arthur Heymans | 7f922b0 | 2018-08-22 02:14:04 +0200 | [diff] [blame] | 147 | }; |
| 148 | |
| 149 | static const struct pci_driver atl1e_driver __pci_driver = { |
| 150 | .ops = &atl1e_ops, |
| 151 | .vendor = 0x1969, |
| 152 | .device = 0x1026, |
| 153 | }; |
| 154 | |
| 155 | struct chip_operations drivers_net_ops = { |
| 156 | CHIP_NAME("Atheros AR8121/AR8113/AR8114") |
| 157 | }; |