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Diffstat (limited to 'board/esd/vme8349/caddy.c')
-rw-r--r--board/esd/vme8349/caddy.c194
1 files changed, 194 insertions, 0 deletions
diff --git a/board/esd/vme8349/caddy.c b/board/esd/vme8349/caddy.c
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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"
+ );