1 /* 2 * caddy.c -- esd VME8349 support for "missing" access modes in TSI148. 3 * Copyright (c) 2009 esd gmbh. 4 * 5 * Reinhard Arlt <reinhard.arlt@esd-electronics.com> 6 * 7 * SPDX-License-Identifier: GPL-2.0+ 8 */ 9 10 #include <common.h> 11 #include <ioports.h> 12 #include <mpc83xx.h> 13 #include <asm/mpc8349_pci.h> 14 #include <pci.h> 15 #include <asm/mmu.h> 16 #include <asm/io.h> 17 18 #include "caddy.h" 19 20 static struct caddy_interface *caddy_interface; 21 22 void generate_answer(struct caddy_cmd *cmd, uint32_t status, uint32_t *result) 23 { 24 struct caddy_answer *answer; 25 uint32_t ptr; 26 27 answer = &caddy_interface->answer[caddy_interface->answer_in]; 28 memset((void *)answer, 0, sizeof(struct caddy_answer)); 29 answer->answer = cmd->cmd; 30 answer->issue = cmd->issue; 31 answer->status = status; 32 memcpy(answer->par, result, 5 * sizeof(result[0])); 33 ptr = caddy_interface->answer_in + 1; 34 ptr = ptr & (ANSWER_SIZE - 1); 35 if (ptr != caddy_interface->answer_out) 36 caddy_interface->answer_in = ptr; 37 } 38 39 int do_caddy(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) 40 { 41 unsigned long base_addr; 42 uint32_t ptr; 43 struct caddy_cmd *caddy_cmd; 44 uint32_t result[5]; 45 uint16_t data16; 46 uint8_t data8; 47 uint32_t status; 48 pci_dev_t dev; 49 void *pci_ptr; 50 51 if (argc < 2) { 52 puts("Missing parameter\n"); 53 return 1; 54 } 55 56 base_addr = simple_strtoul(argv[1], NULL, 16); 57 caddy_interface = (struct caddy_interface *) base_addr; 58 59 memset((void *)caddy_interface, 0, sizeof(struct caddy_interface)); 60 memcpy((void *)&caddy_interface->magic[0], &CADDY_MAGIC, 16); 61 62 while (ctrlc() == 0) { 63 if (caddy_interface->cmd_in != caddy_interface->cmd_out) { 64 memset(result, 0, 5 * sizeof(result[0])); 65 status = 0; 66 caddy_cmd = &caddy_interface->cmd[caddy_interface->cmd_out]; 67 pci_ptr = (void *)CONFIG_SYS_PCI1_IO_PHYS + 68 (caddy_cmd->addr & 0x001fffff); 69 70 switch (caddy_cmd->cmd) { 71 case CADDY_CMD_IO_READ_8: 72 result[0] = in_8(pci_ptr); 73 break; 74 75 case CADDY_CMD_IO_READ_16: 76 result[0] = in_be16(pci_ptr); 77 break; 78 79 case CADDY_CMD_IO_READ_32: 80 result[0] = in_be32(pci_ptr); 81 break; 82 83 case CADDY_CMD_IO_WRITE_8: 84 data8 = caddy_cmd->par[0] & 0x000000ff; 85 out_8(pci_ptr, data8); 86 break; 87 88 case CADDY_CMD_IO_WRITE_16: 89 data16 = caddy_cmd->par[0] & 0x0000ffff; 90 out_be16(pci_ptr, data16); 91 break; 92 93 case CADDY_CMD_IO_WRITE_32: 94 out_be32(pci_ptr, caddy_cmd->par[0]); 95 break; 96 97 case CADDY_CMD_CONFIG_READ_8: 98 dev = PCI_BDF(caddy_cmd->par[0], 99 caddy_cmd->par[1], 100 caddy_cmd->par[2]); 101 status = pci_read_config_byte(dev, 102 caddy_cmd->addr, 103 &data8); 104 result[0] = data8; 105 break; 106 107 case CADDY_CMD_CONFIG_READ_16: 108 dev = PCI_BDF(caddy_cmd->par[0], 109 caddy_cmd->par[1], 110 caddy_cmd->par[2]); 111 status = pci_read_config_word(dev, 112 caddy_cmd->addr, 113 &data16); 114 result[0] = data16; 115 break; 116 117 case CADDY_CMD_CONFIG_READ_32: 118 dev = PCI_BDF(caddy_cmd->par[0], 119 caddy_cmd->par[1], 120 caddy_cmd->par[2]); 121 status = pci_read_config_dword(dev, 122 caddy_cmd->addr, 123 &result[0]); 124 break; 125 126 case CADDY_CMD_CONFIG_WRITE_8: 127 dev = PCI_BDF(caddy_cmd->par[0], 128 caddy_cmd->par[1], 129 caddy_cmd->par[2]); 130 data8 = caddy_cmd->par[3] & 0x000000ff; 131 status = pci_write_config_byte(dev, 132 caddy_cmd->addr, 133 data8); 134 break; 135 136 case CADDY_CMD_CONFIG_WRITE_16: 137 dev = PCI_BDF(caddy_cmd->par[0], 138 caddy_cmd->par[1], 139 caddy_cmd->par[2]); 140 data16 = caddy_cmd->par[3] & 0x0000ffff; 141 status = pci_write_config_word(dev, 142 caddy_cmd->addr, 143 data16); 144 break; 145 146 case CADDY_CMD_CONFIG_WRITE_32: 147 dev = PCI_BDF(caddy_cmd->par[0], 148 caddy_cmd->par[1], 149 caddy_cmd->par[2]); 150 status = pci_write_config_dword(dev, 151 caddy_cmd->addr, 152 caddy_cmd->par[3]); 153 break; 154 155 default: 156 status = 0xffffffff; 157 break; 158 } 159 160 generate_answer(caddy_cmd, status, &result[0]); 161 162 ptr = caddy_interface->cmd_out + 1; 163 ptr = ptr & (CMD_SIZE - 1); 164 caddy_interface->cmd_out = ptr; 165 } 166 167 caddy_interface->heartbeat++; 168 } 169 170 return 0; 171 } 172 173 U_BOOT_CMD( 174 caddy, 2, 0, do_caddy, 175 "Start Caddy server.", 176 "Start Caddy server with Data structure a given addr\n" 177 ); 178