153 lines
3.6 KiB
C
153 lines
3.6 KiB
C
/* Driver for MagicBox 2.0 onboard CompactFlash adapter.
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* Written by Wojtek Kaniewski <wojtekka@toxygen.net>
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*
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* GNU General Public License.
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*/
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#include <linux/version.h>
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#include <linux/types.h>
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#include <linux/mm.h>
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#include <linux/interrupt.h>
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#include <linux/blkdev.h>
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#include <linux/hdreg.h>
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#include <linux/ide.h>
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#include <linux/delay.h>
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#include <linux/platform_device.h>
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#define UIC0_PR 0xc4
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#define UIC0_TR 0xc5
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#define IRQ 25
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static int ide_offsets[IDE_NR_PORTS] = {0, 2, 4, 6, 8, 10, 12, 14, -1, -1};
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static u8 magicbox_ide_inb (unsigned long port)
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{
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return (u8) (readw((void __iomem *) port) >> 8) & 255;
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}
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static u16 magicbox_ide_inw (unsigned long port)
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{
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return (u16) readw((void __iomem *) port);
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}
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static void magicbox_ide_insw (unsigned long port, void *addr, u32 count)
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{
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u16 *ptr;
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for (ptr = addr; count--; ptr++)
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*ptr = readw((void __iomem *) port);
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}
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static u32 magicbox_ide_inl (unsigned long port)
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{
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return (u32) readl((void __iomem *) port);
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}
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static void magicbox_ide_insl (unsigned long port, void *addr, u32 count)
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{
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u32 *ptr;
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for (ptr = addr; count--; ptr++)
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*ptr = readl((void __iomem *) port);
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}
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static void magicbox_ide_outb (u8 value, unsigned long port)
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{
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writew(value << 8, (void __iomem *) port);
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}
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static void magicbox_ide_outbsync (ide_drive_t *drive, u8 value, unsigned long port)
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{
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writew(value << 8, (void __iomem *) port);
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}
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static void magicbox_ide_outw (u16 value, unsigned long port)
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{
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writew(value, (void __iomem *) port);
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}
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static void magicbox_ide_outsw (unsigned long port, void *addr, u32 count)
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{
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u16 *ptr;
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for (ptr = addr; count--; ptr++)
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writew(*ptr, (void __iomem *) port);
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}
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static void magicbox_ide_outl (u32 value, unsigned long port)
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{
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writel(value, (void __iomem *) port);
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}
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static void magicbox_ide_outsl (unsigned long port, void *addr, u32 count)
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{
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u32 *ptr;
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for (ptr = addr; count--; ptr++)
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writel(*ptr, (void __iomem *) port);
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}
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static void __init ide_magicbox_register(unsigned long addr,
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unsigned long caddr, int irq)
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{
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hw_regs_t hw;
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ide_hwif_t *hwif;
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memset(&hw, 0, sizeof(hw));
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ide_setup_ports(&hw, addr, ide_offsets, caddr + 12, 0, NULL,irq);
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#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,22)
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if (ide_register_hw(&hw, &hwif) != -1)
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#else
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if (ide_register_hw(&hw, 1, &hwif) != -1)
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#endif
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{
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printk(KERN_NOTICE "magicbox-ide: Registered IDE-CF driver\n");
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hwif->mmio = 2;
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hwif->drives[0].unmask = 1;
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hwif->OUTB = magicbox_ide_outb;
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hwif->OUTBSYNC = magicbox_ide_outbsync;
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hwif->OUTW = magicbox_ide_outw;
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hwif->OUTSW = magicbox_ide_outsw;
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hwif->OUTSL = magicbox_ide_outsl;
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hwif->INB = magicbox_ide_inb;
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hwif->INW = magicbox_ide_inw;
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hwif->INSW = magicbox_ide_insw;
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hwif->INSL = magicbox_ide_insl;
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}
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}
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void __init ide_magicbox_init(void)
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{
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volatile u16 *addr;
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volatile u16 *caddr;
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/* Turn on PerWE instead of PCIsomething */
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mtdcr(DCRN_CPC0_PCI_BASE, mfdcr(DCRN_CPC0_PCI_BASE) | (0x80000000L >> 27));
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/* PerCS1 (CF's CS0): base 0xff100000, 16-bit, rw */
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mtdcr(DCRN_EBC_BASE, 1);
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mtdcr(DCRN_EBC_BASE + 1, 0xff11a000);
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mtdcr(DCRN_EBC_BASE, 0x11);
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mtdcr(DCRN_EBC_BASE + 1, 0x080bd800);
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/* PerCS2 (CF's CS1): base 0xff200000, 16-bit, rw */
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mtdcr(DCRN_EBC_BASE, 2);
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mtdcr(DCRN_EBC_BASE + 1, 0xff21a000);
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mtdcr(DCRN_EBC_BASE, 0x12);
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mtdcr(DCRN_EBC_BASE + 1, 0x080bd800);
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/* Remap physical address space */
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addr = ioremap_nocache(0xff100000, 4096);
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caddr = ioremap_nocache(0xff200000, 4096);
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/* Set interrupt to low-to-high-edge-triggered */
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mtdcr(UIC0_TR, mfdcr(UIC0_TR) & ~(0x80000000L >> IRQ));
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mtdcr(UIC0_PR, mfdcr(UIC0_PR) | (0x80000000L >> IRQ));
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ide_magicbox_register((unsigned long)addr, (unsigned long)caddr, IRQ);
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}
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