caddy.c
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// 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"
);