示例#1
0
文件： cmd_pci.c 项目： djyos/djyos 
//------pcie命令----------------------------------
//功能：shell命令，查看pcie设备信息
//参数：param: 字符串
//返回：true:  打印完成
//----------------------------------------------------------
bool_t sh_cmd_pcie(char *param)
{
    ptu32_t busno;
    char *next_param;
    char *str_busno;
    int i;
    if(param == NULL)
    {
        for(i =0; i<=pci_last_busno(); i++)
            pciinfo(i);
        return true;
    }
    str_busno = Sh_GetWord(param,&next_param);
    if(str_busno == NULL)
    {
        for(i =0; i<=pci_last_busno(); i++)
            pciinfo(i);
        return true;
    }
    busno = strtol(str_busno, (char **)NULL, 0);
    if(busno>pci_last_busno())
    {
        printf("输入的pcie设备 bus号超过了当前总线上的最大bus号\r\n");
        return false;
    }
    else
        pciinfo(busno);
    return true;

}
示例#2
0
static void pci_init_bus(int bus, struct pci_region *reg)
{
    volatile immap_t *immr = (volatile immap_t *)CONFIG_SYS_IMMR;
    volatile pot83xx_t *pot = immr->ios.pot;
    volatile pcictrl83xx_t *pci_ctrl = &immr->pci_ctrl[bus];
    struct pci_controller *hose = &pci_hose[bus];
    u32 dev;
    u16 reg16;
    int i;

    if (bus == 1)
        pot += 3;

    /* Setup outbound translation windows */
    for (i = 0; i < 3; i++, reg++, pot++) {
        if (reg->size == 0)
            break;

        hose->regions[i] = *reg;
        hose->region_count++;

        pot->potar = reg->bus_start >> 12;
        pot->pobar = reg->phys_start >> 12;
        pot->pocmr = ~(reg->size - 1) >> 12;

        if (reg->flags & PCI_REGION_IO)
            pot->pocmr |= POCMR_IO;
#ifdef CONFIG_83XX_PCI_STREAMING
        else if (reg->flags & PCI_REGION_PREFETCH)
            pot->pocmr |= POCMR_SE;
#endif

        if (bus == 1)
            pot->pocmr |= POCMR_DST;

        pot->pocmr |= POCMR_EN;
    }

    /* Point inbound translation at RAM */
    pci_ctrl->pitar1 = 0;
    pci_ctrl->pibar1 = 0;
    pci_ctrl->piebar1 = 0;
    pci_ctrl->piwar1 = PIWAR_EN | PIWAR_PF | PIWAR_RTT_SNOOP |
                       PIWAR_WTT_SNOOP | (__ilog2(gd->ram_size - 1));

    i = hose->region_count++;
    hose->regions[i].bus_start = 0;
    hose->regions[i].phys_start = 0;
    hose->regions[i].size = gd->ram_size;
    hose->regions[i].flags = PCI_REGION_MEM | PCI_REGION_SYS_MEMORY;

    hose->first_busno = pci_last_busno() + 1;
    hose->last_busno = 0xff;

    pci_setup_indirect(hose, CONFIG_SYS_IMMR + 0x8300 + bus * 0x80,
                       CONFIG_SYS_IMMR + 0x8304 + bus * 0x80);

    pci_register_hose(hose);

    /*
     * Write to Command register
     */
    reg16 = 0xff;
    dev = PCI_BDF(hose->first_busno, 0, 0);
    pci_hose_read_config_word(hose, dev, PCI_COMMAND, &reg16);
    reg16 |= PCI_COMMAND_SERR | PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY;
    pci_hose_write_config_word(hose, dev, PCI_COMMAND, reg16);

    /*
     * Clear non-reserved bits in status register.
     */
    pci_hose_write_config_word(hose, dev, PCI_STATUS, 0xffff);
    pci_hose_write_config_byte(hose, dev, PCI_LATENCY_TIMER, 0x80);
    pci_hose_write_config_byte(hose, dev, PCI_CACHE_LINE_SIZE, 0x08);

#ifdef CONFIG_PCI_SCAN_SHOW
    printf("PCI:   Bus Dev VenId DevId Class Int\n");
#endif
#ifndef CONFIG_PCISLAVE
    /*
     * Hose scan.
     */
    hose->last_busno = pci_hose_scan(hose);
#endif
}