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  • /*
     * SH4 PCI Controller (PCIC) for U-Boot.
     * (C) Dustin McIntire (dustin@sensoria.com)
    
     * (C) 2007,2008 Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
    
     * (C) 2008 Yusuke Goda <goda.yusuke@renesas.com>
     *
    
     * u-boot/arch/sh/cpu/sh4/pci-sh4.c
    
     * SPDX-License-Identifier:	GPL-2.0+
    
     */
    
    #include <common.h>
    
    #include <asm/processor.h>
    #include <asm/io.h>
    #include <asm/pci.h>
    #include <pci.h>
    
    int pci_sh4_init(struct pci_controller *hose)
    {
    	hose->first_busno = 0;
    	hose->region_count = 0;
    	hose->last_busno = 0xff;
    
    	/* PCI memory space */
    	pci_set_region(hose->regions + 0,
    		CONFIG_PCI_MEM_BUS,
    		CONFIG_PCI_MEM_PHYS,
    		CONFIG_PCI_MEM_SIZE,
    		PCI_REGION_MEM);
    	hose->region_count++;
    
    	/* PCI IO space */
    	pci_set_region(hose->regions + 1,
    		CONFIG_PCI_IO_BUS,
    		CONFIG_PCI_IO_PHYS,
    		CONFIG_PCI_IO_SIZE,
    		PCI_REGION_IO);
    	hose->region_count++;
    
    
    #if defined(CONFIG_PCI_SYS_BUS)
    	/* PCI System Memory space */
    	pci_set_region(hose->regions + 2,
    		CONFIG_PCI_SYS_BUS,
    		CONFIG_PCI_SYS_PHYS,
    		CONFIG_PCI_SYS_SIZE,
    		PCI_REGION_MEM | PCI_REGION_SYS_MEMORY);
    	hose->region_count++;
    #endif
    
    
    	udelay(1000);
    
    	pci_set_ops(hose,
    		    pci_hose_read_config_byte_via_dword,
    		    pci_hose_read_config_word_via_dword,
    		    pci_sh4_read_config_dword,
    		    pci_hose_write_config_byte_via_dword,
    		    pci_hose_write_config_word_via_dword,
    		    pci_sh4_write_config_dword);
    
    	pci_register_hose(hose);
    
    	udelay(1000);
    
    #ifdef CONFIG_PCI_SCAN_SHOW
    	printf("PCI:   Bus Dev VenId DevId Class Int\n");
    #endif
    	hose->last_busno = pci_hose_scan(hose);
    	return 0;
    }
    
    
    int pci_skip_dev(struct pci_controller *hose, pci_dev_t dev)
    {
    	return 0;
    }
    
    #ifdef CONFIG_PCI_SCAN_SHOW
    int pci_print_dev(struct pci_controller *hose, pci_dev_t dev)
    {
    	return 1;
    }
    #endif /* CONFIG_PCI_SCAN_SHOW */