ide.h
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上传日期:2013-02-24
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- /* $Id: ide.h,v 1.6 2000/05/27 00:49:37 davem Exp $
- * ide.h: SPARC PCI specific IDE glue.
- *
- * Copyright (C) 1997 David S. Miller (davem@caip.rutgers.edu)
- * Copyright (C) 1998 Eddie C. Dost (ecd@skynet.be)
- * Adaptation from sparc64 version to sparc by Pete Zaitcev.
- */
- #ifndef _SPARC_IDE_H
- #define _SPARC_IDE_H
- #ifdef __KERNEL__
- #include <linux/config.h>
- #include <asm/pgtable.h>
- #include <asm/io.h>
- #include <asm/hdreg.h>
- #include <asm/psr.h>
- #undef MAX_HWIFS
- #define MAX_HWIFS 2
- #define ide__sti() __sti()
- static __inline__ int ide_default_irq(ide_ioreg_t base)
- {
- return 0;
- }
- static __inline__ ide_ioreg_t ide_default_io_base(int index)
- {
- return 0;
- }
- /*
- * Doing any sort of ioremap() here does not work
- * because this function may be called with null aguments.
- */
- static __inline__ void ide_init_hwif_ports(hw_regs_t *hw, ide_ioreg_t data_port, ide_ioreg_t ctrl_port, int *irq)
- {
- ide_ioreg_t reg = data_port;
- int i;
- for (i = IDE_DATA_OFFSET; i <= IDE_STATUS_OFFSET; i++) {
- hw->io_ports[i] = reg;
- reg += 1;
- }
- if (ctrl_port) {
- hw->io_ports[IDE_CONTROL_OFFSET] = ctrl_port;
- } else {
- hw->io_ports[IDE_CONTROL_OFFSET] = 0;
- }
- if (irq != NULL)
- *irq = 0;
- hw->io_ports[IDE_IRQ_OFFSET] = 0;
- }
- /*
- * This registers the standard ports for this architecture with the IDE
- * driver.
- */
- static __inline__ void ide_init_default_hwifs(void)
- {
- #ifndef CONFIG_BLK_DEV_IDEPCI
- hw_regs_t hw;
- int index;
- for (index = 0; index < MAX_HWIFS; index++) {
- ide_init_hwif_ports(&hw, ide_default_io_base(index), 0, NULL);
- hw.irq = ide_default_irq(ide_default_io_base(index));
- ide_register_hw(&hw, NULL);
- }
- #endif /* CONFIG_BLK_DEV_IDEPCI */
- }
- typedef union {
- unsigned int all : 8; /* all of the bits together */
- struct {
- unsigned int bit7 : 1;
- unsigned int lba : 1;
- unsigned int bit5 : 1;
- unsigned int unit : 1;
- unsigned int head : 4;
- } b;
- } select_t;
- static __inline__ int ide_request_irq(unsigned int irq,
- void (*handler)(int, void *, struct pt_regs *),
- unsigned long flags, const char *name, void *devid)
- {
- return request_irq(irq, handler, SA_SHIRQ, name, devid);
- }
- static __inline__ void ide_free_irq(unsigned int irq, void *dev_id)
- {
- free_irq(irq, dev_id);
- }
- static __inline__ int ide_check_region(ide_ioreg_t base, unsigned int size)
- {
- /* We leave these empty because pcic.c calls sparc_alloc_io() */
- return 0;
- }
- static __inline__ void ide_request_region(ide_ioreg_t base, unsigned int size,
- const char *name)
- {
- }
- static __inline__ void ide_release_region(ide_ioreg_t base, unsigned int size)
- {
- }
- #undef SUPPORT_SLOW_DATA_PORTS
- #define SUPPORT_SLOW_DATA_PORTS 0
- #undef SUPPORT_VLB_SYNC
- #define SUPPORT_VLB_SYNC 0
- #undef HD_DATA
- #define HD_DATA ((ide_ioreg_t)0)
- /* From m68k code... */
- #ifdef insl
- #undef insl
- #endif
- #ifdef outsl
- #undef outsl
- #endif
- #ifdef insw
- #undef insw
- #endif
- #ifdef outsw
- #undef outsw
- #endif
- #define insl(data_reg, buffer, wcount) insw(data_reg, buffer, (wcount)<<1)
- #define outsl(data_reg, buffer, wcount) outsw(data_reg, buffer, (wcount)<<1)
- #define insw(port, buf, nr) ide_insw((port), (buf), (nr))
- #define outsw(port, buf, nr) ide_outsw((port), (buf), (nr))
- static __inline__ void ide_insw(unsigned long port,
- void *dst,
- unsigned long count)
- {
- volatile unsigned short *data_port;
- /* unsigned long end = (unsigned long)dst + (count << 1); */ /* P3 */
- u16 *ps = dst;
- u32 *pi;
- data_port = (volatile unsigned short *)port;
- if(((unsigned long)ps) & 0x2) {
- *ps++ = *data_port;
- count--;
- }
- pi = (u32 *)ps;
- while(count >= 2) {
- u32 w;
- w = (*data_port) << 16;
- w |= (*data_port);
- *pi++ = w;
- count -= 2;
- }
- ps = (u16 *)pi;
- if(count)
- *ps++ = *data_port;
- /* __flush_dcache_range((unsigned long)dst, end); */ /* P3 see hme */
- }
- static __inline__ void ide_outsw(unsigned long port,
- const void *src,
- unsigned long count)
- {
- volatile unsigned short *data_port;
- /* unsigned long end = (unsigned long)src + (count << 1); */
- const u16 *ps = src;
- const u32 *pi;
- data_port = (volatile unsigned short *)port;
- if(((unsigned long)src) & 0x2) {
- *data_port = *ps++;
- count--;
- }
- pi = (const u32 *)ps;
- while(count >= 2) {
- u32 w;
- w = *pi++;
- *data_port = (w >> 16);
- *data_port = w;
- count -= 2;
- }
- ps = (const u16 *)pi;
- if(count)
- *data_port = *ps;
- /* __flush_dcache_range((unsigned long)src, end); */ /* P3 see hme */
- }
- #define T_CHAR (0x0000) /* char: don't touch */
- #define T_SHORT (0x4000) /* short: 12 -> 21 */
- #define T_INT (0x8000) /* int: 1234 -> 4321 */
- #define T_TEXT (0xc000) /* text: 12 -> 21 */
- #define T_MASK_TYPE (0xc000)
- #define T_MASK_COUNT (0x3fff)
- #define D_CHAR(cnt) (T_CHAR | (cnt))
- #define D_SHORT(cnt) (T_SHORT | (cnt))
- #define D_INT(cnt) (T_INT | (cnt))
- #define D_TEXT(cnt) (T_TEXT | (cnt))
- static u_short driveid_types[] = {
- D_SHORT(10), /* config - vendor2 */
- D_TEXT(20), /* serial_no */
- D_SHORT(3), /* buf_type - ecc_bytes */
- D_TEXT(48), /* fw_rev - model */
- D_CHAR(2), /* max_multsect - vendor3 */
- D_SHORT(1), /* dword_io */
- D_CHAR(2), /* vendor4 - capability */
- D_SHORT(1), /* reserved50 */
- D_CHAR(4), /* vendor5 - tDMA */
- D_SHORT(4), /* field_valid - cur_sectors */
- D_INT(1), /* cur_capacity */
- D_CHAR(2), /* multsect - multsect_valid */
- D_INT(1), /* lba_capacity */
- D_SHORT(194) /* dma_1word - reservedyy */
- };
- #define num_driveid_types (sizeof(driveid_types)/sizeof(*driveid_types))
- static __inline__ void ide_fix_driveid(struct hd_driveid *id)
- {
- u_char *p = (u_char *)id;
- int i, j, cnt;
- u_char t;
- for (i = 0; i < num_driveid_types; i++) {
- cnt = driveid_types[i] & T_MASK_COUNT;
- switch (driveid_types[i] & T_MASK_TYPE) {
- case T_CHAR:
- p += cnt;
- break;
- case T_SHORT:
- for (j = 0; j < cnt; j++) {
- t = p[0];
- p[0] = p[1];
- p[1] = t;
- p += 2;
- }
- break;
- case T_INT:
- for (j = 0; j < cnt; j++) {
- t = p[0];
- p[0] = p[3];
- p[3] = t;
- t = p[1];
- p[1] = p[2];
- p[2] = t;
- p += 4;
- }
- break;
- case T_TEXT:
- for (j = 0; j < cnt; j += 2) {
- t = p[0];
- p[0] = p[1];
- p[1] = t;
- p += 2;
- }
- break;
- };
- }
- }
- /*
- * The following are not needed for the non-m68k ports
- */
- #define ide_ack_intr(hwif) (1)
- /* #define ide_ack_intr(hwif) ((hwif)->hw.ack_intr ? (hwif)->hw.ack_intr(hwif) : 1) */
- #define ide_release_lock(lock) do {} while (0)
- #define ide_get_lock(lock, hdlr, data) do {} while (0)
- #endif /* __KERNEL__ */
- #endif /* _SPARC_IDE_H */