forked from Minki/linux
c293738e6d
Currently the array of Zorro devices is allocated statically, wasting up to 4.5 KiB when running an Amiga or multi-platform kernel on a machine with no or a handful of Zorro expansion cards. Convert it to conditional dynamic memory allocation to fix this. amiga_parse_bootinfo() still needs to store some information about the detected Zorro devices, at a time even the bootmem allocator is not yet available. This is now handled using a much smaller array (typically less than 0.5 KiB), which is __initdata and thus freed later. Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
253 lines
5.5 KiB
C
253 lines
5.5 KiB
C
/*
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* Copyright (C) 2007-2009 Geert Uytterhoeven
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*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file COPYING in the main directory of this archive
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* for more details.
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*/
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#include <linux/err.h>
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#include <linux/init.h>
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#include <linux/platform_device.h>
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#include <linux/zorro.h>
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#include <asm/amigahw.h>
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#include <asm/amigayle.h>
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#ifdef CONFIG_ZORRO
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static const struct resource zorro_resources[] __initconst = {
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/* Zorro II regions (on Zorro II/III) */
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{
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.name = "Zorro II exp",
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.start = 0x00e80000,
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.end = 0x00efffff,
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.flags = IORESOURCE_MEM,
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}, {
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.name = "Zorro II mem",
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.start = 0x00200000,
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.end = 0x009fffff,
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.flags = IORESOURCE_MEM,
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},
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/* Zorro III regions (on Zorro III only) */
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{
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.name = "Zorro III exp",
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.start = 0xff000000,
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.end = 0xffffffff,
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.flags = IORESOURCE_MEM,
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}, {
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.name = "Zorro III cfg",
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.start = 0x40000000,
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.end = 0x7fffffff,
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.flags = IORESOURCE_MEM,
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}
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};
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static int __init amiga_init_bus(void)
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{
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struct platform_device *pdev;
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unsigned int n;
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if (!MACH_IS_AMIGA || !AMIGAHW_PRESENT(ZORRO))
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return -ENODEV;
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n = AMIGAHW_PRESENT(ZORRO3) ? 4 : 2;
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pdev = platform_device_register_simple("amiga-zorro", -1,
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zorro_resources, n);
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return PTR_ERR_OR_ZERO(pdev);
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}
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subsys_initcall(amiga_init_bus);
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static int __init z_dev_present(zorro_id id)
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{
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unsigned int i;
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for (i = 0; i < zorro_num_autocon; i++)
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if (zorro_autocon_init[i].rom.er_Manufacturer == ZORRO_MANUF(id) &&
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zorro_autocon_init[i].rom.er_Product == ZORRO_PROD(id))
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return 1;
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return 0;
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}
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#else /* !CONFIG_ZORRO */
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static inline int z_dev_present(zorro_id id) { return 0; }
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#endif /* !CONFIG_ZORRO */
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static const struct resource a3000_scsi_resource __initconst = {
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.start = 0xdd0000,
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.end = 0xdd00ff,
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.flags = IORESOURCE_MEM,
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};
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static const struct resource a4000t_scsi_resource __initconst = {
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.start = 0xdd0000,
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.end = 0xdd0fff,
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.flags = IORESOURCE_MEM,
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};
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static const struct resource a1200_ide_resource __initconst = {
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.start = 0xda0000,
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.end = 0xda1fff,
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.flags = IORESOURCE_MEM,
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};
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static const struct gayle_ide_platform_data a1200_ide_pdata __initconst = {
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.base = 0xda0000,
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.irqport = 0xda9000,
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.explicit_ack = 1,
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};
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static const struct resource a4000_ide_resource __initconst = {
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.start = 0xdd2000,
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.end = 0xdd3fff,
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.flags = IORESOURCE_MEM,
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};
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static const struct gayle_ide_platform_data a4000_ide_pdata __initconst = {
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.base = 0xdd2020,
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.irqport = 0xdd3020,
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.explicit_ack = 0,
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};
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static const struct resource amiga_rtc_resource __initconst = {
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.start = 0x00dc0000,
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.end = 0x00dcffff,
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.flags = IORESOURCE_MEM,
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};
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static int __init amiga_init_devices(void)
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{
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struct platform_device *pdev;
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int error;
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if (!MACH_IS_AMIGA)
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return -ENODEV;
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/* video hardware */
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if (AMIGAHW_PRESENT(AMI_VIDEO)) {
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pdev = platform_device_register_simple("amiga-video", -1, NULL,
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0);
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if (IS_ERR(pdev))
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return PTR_ERR(pdev);
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}
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/* sound hardware */
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if (AMIGAHW_PRESENT(AMI_AUDIO)) {
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pdev = platform_device_register_simple("amiga-audio", -1, NULL,
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0);
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if (IS_ERR(pdev))
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return PTR_ERR(pdev);
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}
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/* storage interfaces */
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if (AMIGAHW_PRESENT(AMI_FLOPPY)) {
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pdev = platform_device_register_simple("amiga-floppy", -1,
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NULL, 0);
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if (IS_ERR(pdev))
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return PTR_ERR(pdev);
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}
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if (AMIGAHW_PRESENT(A3000_SCSI)) {
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pdev = platform_device_register_simple("amiga-a3000-scsi", -1,
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&a3000_scsi_resource, 1);
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if (IS_ERR(pdev))
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return PTR_ERR(pdev);
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}
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if (AMIGAHW_PRESENT(A4000_SCSI)) {
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pdev = platform_device_register_simple("amiga-a4000t-scsi", -1,
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&a4000t_scsi_resource,
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1);
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if (IS_ERR(pdev))
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return PTR_ERR(pdev);
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}
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if (AMIGAHW_PRESENT(A1200_IDE) ||
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z_dev_present(ZORRO_PROD_MTEC_VIPER_MK_V_E_MATRIX_530_SCSI_IDE)) {
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pdev = platform_device_register_simple("amiga-gayle-ide", -1,
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&a1200_ide_resource, 1);
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if (IS_ERR(pdev))
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return PTR_ERR(pdev);
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error = platform_device_add_data(pdev, &a1200_ide_pdata,
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sizeof(a1200_ide_pdata));
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if (error)
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return error;
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}
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if (AMIGAHW_PRESENT(A4000_IDE)) {
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pdev = platform_device_register_simple("amiga-gayle-ide", -1,
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&a4000_ide_resource, 1);
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if (IS_ERR(pdev))
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return PTR_ERR(pdev);
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error = platform_device_add_data(pdev, &a4000_ide_pdata,
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sizeof(a4000_ide_pdata));
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if (error)
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return error;
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}
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/* other I/O hardware */
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if (AMIGAHW_PRESENT(AMI_KEYBOARD)) {
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pdev = platform_device_register_simple("amiga-keyboard", -1,
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NULL, 0);
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if (IS_ERR(pdev))
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return PTR_ERR(pdev);
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}
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if (AMIGAHW_PRESENT(AMI_MOUSE)) {
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pdev = platform_device_register_simple("amiga-mouse", -1, NULL,
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0);
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if (IS_ERR(pdev))
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return PTR_ERR(pdev);
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}
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if (AMIGAHW_PRESENT(AMI_SERIAL)) {
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pdev = platform_device_register_simple("amiga-serial", -1,
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NULL, 0);
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if (IS_ERR(pdev))
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return PTR_ERR(pdev);
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}
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if (AMIGAHW_PRESENT(AMI_PARALLEL)) {
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pdev = platform_device_register_simple("amiga-parallel", -1,
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NULL, 0);
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if (IS_ERR(pdev))
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return PTR_ERR(pdev);
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}
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/* real time clocks */
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if (AMIGAHW_PRESENT(A2000_CLK)) {
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pdev = platform_device_register_simple("rtc-msm6242", -1,
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&amiga_rtc_resource, 1);
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if (IS_ERR(pdev))
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return PTR_ERR(pdev);
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}
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if (AMIGAHW_PRESENT(A3000_CLK)) {
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pdev = platform_device_register_simple("rtc-rp5c01", -1,
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&amiga_rtc_resource, 1);
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if (IS_ERR(pdev))
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return PTR_ERR(pdev);
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}
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return 0;
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}
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arch_initcall(amiga_init_devices);
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