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![Wolfgang Denk](/assets/img/avatar_default.png)
Fix: zuma_pbb_mbox.c: In function 'zuma_mbox_dump': zuma_pbb_mbox.c:115:2: warning: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing] zuma_pbb_mbox.c:117:2: warning: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing] Signed-off-by: Wolfgang Denk <wd@denx.de>
209 lines
4.6 KiB
C
209 lines
4.6 KiB
C
#include <common.h>
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#include <galileo/pci.h>
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#include <net.h>
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#include <pci.h>
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#include "zuma_pbb.h"
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#include "zuma_pbb_mbox.h"
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struct _zuma_mbox_dev zuma_mbox_dev;
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static int zuma_mbox_write(struct _zuma_mbox_dev *dev, unsigned int data)
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{
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unsigned int status, count = 0, i;
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status = (volatile int) le32_to_cpu(dev->sip->mbox_status);
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while ((status & OUT_PENDING) && count < 1000) {
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count++;
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for (i = 0; i < 1000; i++)
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;
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status = (volatile int) le32_to_cpu(dev->sip->mbox_status);
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}
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if (count < 1000) {
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/* if SET it means msg pending */
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/* printf("mbox real write %08x\n",data); */
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dev->sip->mbox_out = cpu_to_le32(data);
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return 4;
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}
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printf("mbox tx timeout\n");
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return 0;
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}
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static int zuma_mbox_read(struct _zuma_mbox_dev *dev, unsigned int *data)
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{
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unsigned int status, count = 0, i;
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status = (volatile int) le32_to_cpu(dev->sip->mbox_status);
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while (!(status & IN_VALID) && count < 1000) {
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count++;
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for (i = 0; i < 1000; i++)
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;
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status = (volatile int) le32_to_cpu(dev->sip->mbox_status);
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}
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if (count < 1000) {
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/* if SET it means msg pending */
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*data = le32_to_cpu(dev->sip->mbox_in);
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/*printf("mbox real read %08x\n", *data); */
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return 4;
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}
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printf("mbox rx timeout\n");
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return 0;
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}
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static int zuma_mbox_do_one_mailbox(unsigned int out, unsigned int *in)
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{
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int ret;
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ret = zuma_mbox_write(&zuma_mbox_dev, out);
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/*printf("write 0x%08x (%d bytes)\n", out, ret); */
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if (ret != 4)
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return -1;
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ret = zuma_mbox_read(&zuma_mbox_dev, in);
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/*printf("read 0x%08x (%d bytes)\n", *in, ret); */
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if (ret != 4)
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return -1;
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return 0;
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}
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#define RET_IF_FAILED(x) if ((x) == -1) return -1
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static int zuma_mbox_do_all_mailbox(void)
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{
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unsigned int data_in;
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unsigned short sdata_in;
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RET_IF_FAILED(zuma_mbox_do_one_mailbox(ZUMA_MBOXMSG_START, &data_in));
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RET_IF_FAILED(zuma_mbox_do_one_mailbox(ZUMA_MBOXMSG_MACL, &data_in));
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memcpy(zuma_acc_mac + 2, &data_in, 4);
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RET_IF_FAILED(zuma_mbox_do_one_mailbox(ZUMA_MBOXMSG_MACH, &data_in));
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sdata_in = data_in & 0xffff;
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memcpy(zuma_acc_mac, &sdata_in, 2);
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RET_IF_FAILED(zuma_mbox_do_one_mailbox(ZUMA_MBOXMSG_IP, &data_in));
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zuma_ip = data_in;
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RET_IF_FAILED(zuma_mbox_do_one_mailbox(ZUMA_MBOXMSG_SLOT, &data_in));
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zuma_slot_bac = data_in >> 3;
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RET_IF_FAILED(zuma_mbox_do_one_mailbox(ZUMA_MBOXMSG_BAUD, &data_in));
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zuma_console_baud = data_in & 0xffff;
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zuma_debug_baud = data_in >> 16;
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RET_IF_FAILED(zuma_mbox_do_one_mailbox
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(ZUMA_MBOXMSG_ENG_PRV_MACL, &data_in));
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memcpy(zuma_prv_mac + 2, &data_in, 4);
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RET_IF_FAILED(zuma_mbox_do_one_mailbox
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(ZUMA_MBOXMSG_ENG_PRV_MACH, &data_in));
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sdata_in = data_in & 0xffff;
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memcpy(zuma_prv_mac, &sdata_in, 2);
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RET_IF_FAILED(zuma_mbox_do_one_mailbox(ZUMA_MBOXMSG_DONE, &data_in));
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return 0;
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}
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static void zuma_mbox_dump(void)
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{
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unsigned short s;
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unsigned int i;
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memcpy(&s, &zuma_acc_mac, sizeof(s));
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memcpy(&i, &zuma_acc_mac[2], sizeof(i));
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printf("ACC MAC=%04x%08x\n", s, i);
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memcpy(&s, &zuma_prv_mac, sizeof(s));
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memcpy(&s, &zuma_prv_mac[2], sizeof(i));
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printf("PRV MAC=%04x%08x\n", s, i);
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printf("slot:bac=%d:%d\n",
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(zuma_slot_bac >> 2) & 0xf,
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zuma_slot_bac & 0x3);
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printf("BAUD1=%d BAUD2=%d\n",
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zuma_console_baud,
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zuma_debug_baud);
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}
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static void zuma_mbox_setenv(void)
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{
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char *data, buf[32];
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unsigned char save = 0;
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data = getenv("baudrate");
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if (!data || (zuma_console_baud != simple_strtoul(data, NULL, 10))) {
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sprintf(buf, "%6d", zuma_console_baud);
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setenv("baudrate", buf);
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save = 1;
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printf("baudrate doesn't match from mbox\n");
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}
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ip_to_string(zuma_ip, buf);
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setenv("ipaddr", buf);
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sprintf(buf, "%02x:%02x:%02x:%02x:%02x:%02x",
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zuma_prv_mac[0],
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zuma_prv_mac[1],
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zuma_prv_mac[2],
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zuma_prv_mac[3], zuma_prv_mac[4], zuma_prv_mac[5]);
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setenv("ethaddr", buf);
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sprintf(buf, "%02x", zuma_slot_bac);
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setenv("bacslot", buf);
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if (save)
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saveenv();
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}
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/**
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* zuma_mbox_init:
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*/
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int zuma_mbox_init(void)
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{
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unsigned int iobase;
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memset(&zuma_mbox_dev, 0, sizeof(struct _zuma_mbox_dev));
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zuma_mbox_dev.dev =
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pci_find_device(VENDOR_ID_ZUMA, DEVICE_ID_ZUMA_PBB, 0);
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if (zuma_mbox_dev.dev == -1) {
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printf("no zuma pbb\n");
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return -1;
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}
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pci_read_config_dword(zuma_mbox_dev.dev, PCI_BASE_ADDRESS_0, &iobase);
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iobase &= PCI_BASE_ADDRESS_MEM_MASK;
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zuma_mbox_dev.sip = (PBB_DMA_REG_MAP *) iobase;
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zuma_mbox_dev.sip->int_mask.word = 0;
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printf("pbb @ %p v%d.%d, timestamp %08x\n", zuma_mbox_dev.sip,
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zuma_mbox_dev.sip->version.pci_bits.rev_major,
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zuma_mbox_dev.sip->version.pci_bits.rev_minor,
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zuma_mbox_dev.sip->timestamp);
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if (zuma_mbox_do_all_mailbox() == -1) {
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printf("mailbox failed.. no ACC?\n");
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return -1;
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}
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zuma_mbox_dump();
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zuma_mbox_setenv();
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return 0;
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}
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