// SPDX-License-Identifier: GPL-2.0+ /* * caddy.c -- esd VME8349 support for "missing" access modes in TSI148. * Copyright (c) 2009 esd gmbh. * * Reinhard Arlt <reinhard.arlt@esd-electronics.com> */ #include <common.h> #include <console.h> #include <ioports.h> #include <mpc83xx.h> #include <asm/mpc8349_pci.h> #include <pci.h> #include <asm/mmu.h> #include <asm/io.h> #include "caddy.h" static struct caddy_interface *caddy_interface; void generate_answer(struct caddy_cmd *cmd, uint32_t status, uint32_t *result) { struct caddy_answer *answer; uint32_t ptr; answer = &caddy_interface->answer[caddy_interface->answer_in]; memset((void *)answer, 0, sizeof(struct caddy_answer)); answer->answer = cmd->cmd; answer->issue = cmd->issue; answer->status = status; memcpy(answer->par, result, 5 * sizeof(result[0])); ptr = caddy_interface->answer_in + 1; ptr = ptr & (ANSWER_SIZE - 1); if (ptr != caddy_interface->answer_out) caddy_interface->answer_in = ptr; } int do_caddy(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) { unsigned long base_addr; uint32_t ptr; struct caddy_cmd *caddy_cmd; uint32_t result[5]; uint16_t data16; uint8_t data8; uint32_t status; pci_dev_t dev; void *pci_ptr; if (argc < 2) { puts("Missing parameter\n"); return 1; } base_addr = simple_strtoul(argv[1], NULL, 16); caddy_interface = (struct caddy_interface *) base_addr; memset((void *)caddy_interface, 0, sizeof(struct caddy_interface)); memcpy((void *)&caddy_interface->magic[0], &CADDY_MAGIC, 16); while (ctrlc() == 0) { if (caddy_interface->cmd_in != caddy_interface->cmd_out) { memset(result, 0, 5 * sizeof(result[0])); status = 0; caddy_cmd = &caddy_interface->cmd[caddy_interface->cmd_out]; pci_ptr = (void *)CONFIG_SYS_PCI1_IO_PHYS + (caddy_cmd->addr & 0x001fffff); switch (caddy_cmd->cmd) { case CADDY_CMD_IO_READ_8: result[0] = in_8(pci_ptr); break; case CADDY_CMD_IO_READ_16: result[0] = in_be16(pci_ptr); break; case CADDY_CMD_IO_READ_32: result[0] = in_be32(pci_ptr); break; case CADDY_CMD_IO_WRITE_8: data8 = caddy_cmd->par[0] & 0x000000ff; out_8(pci_ptr, data8); break; case CADDY_CMD_IO_WRITE_16: data16 = caddy_cmd->par[0] & 0x0000ffff; out_be16(pci_ptr, data16); break; case CADDY_CMD_IO_WRITE_32: out_be32(pci_ptr, caddy_cmd->par[0]); break; case CADDY_CMD_CONFIG_READ_8: dev = PCI_BDF(caddy_cmd->par[0], caddy_cmd->par[1], caddy_cmd->par[2]); status = pci_read_config_byte(dev, caddy_cmd->addr, &data8); result[0] = data8; break; case CADDY_CMD_CONFIG_READ_16: dev = PCI_BDF(caddy_cmd->par[0], caddy_cmd->par[1], caddy_cmd->par[2]); status = pci_read_config_word(dev, caddy_cmd->addr, &data16); result[0] = data16; break; case CADDY_CMD_CONFIG_READ_32: dev = PCI_BDF(caddy_cmd->par[0], caddy_cmd->par[1], caddy_cmd->par[2]); status = pci_read_config_dword(dev, caddy_cmd->addr, &result[0]); break; case CADDY_CMD_CONFIG_WRITE_8: dev = PCI_BDF(caddy_cmd->par[0], caddy_cmd->par[1], caddy_cmd->par[2]); data8 = caddy_cmd->par[3] & 0x000000ff; status = pci_write_config_byte(dev, caddy_cmd->addr, data8); break; case CADDY_CMD_CONFIG_WRITE_16: dev = PCI_BDF(caddy_cmd->par[0], caddy_cmd->par[1], caddy_cmd->par[2]); data16 = caddy_cmd->par[3] & 0x0000ffff; status = pci_write_config_word(dev, caddy_cmd->addr, data16); break; case CADDY_CMD_CONFIG_WRITE_32: dev = PCI_BDF(caddy_cmd->par[0], caddy_cmd->par[1], caddy_cmd->par[2]); status = pci_write_config_dword(dev, caddy_cmd->addr, caddy_cmd->par[3]); break; default: status = 0xffffffff; break; } generate_answer(caddy_cmd, status, &result[0]); ptr = caddy_interface->cmd_out + 1; ptr = ptr & (CMD_SIZE - 1); caddy_interface->cmd_out = ptr; } caddy_interface->heartbeat++; } return 0; } U_BOOT_CMD( caddy, 2, 0, do_caddy, "Start Caddy server.", "Start Caddy server with Data structure a given addr\n" );