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Diffstat (limited to 'board/esd/vme8349/caddy.c')
| -rw-r--r-- | board/esd/vme8349/caddy.c | 194 |
1 files changed, 194 insertions, 0 deletions
diff --git a/board/esd/vme8349/caddy.c b/board/esd/vme8349/caddy.c new file mode 100644 index 0000000..bda4117 --- /dev/null +++ b/board/esd/vme8349/caddy.c @@ -0,0 +1,194 @@ +/* + * caddy.c -- esd VME8349 support for "missing" access modes in TSI148. + * Copyright (c) 2009 esd gmbh. + * + * Reinhard Arlt <reinhard.arlt@esd-electronics.com> + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * 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 + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + * + */ + +#include <common.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 *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" + ); |