ide.h
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上传日期:2013-02-24
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- /*
- * linux/include/asm-arm/arch-sa1100/ide.h
- *
- * Copyright (c) 1998 Hugo Fiennes & Nicolas Pitre
- *
- * 26-feb-2002: Add support for 2d3D SA-1110 Development board
- * Abraham van der Merwe <abraham@2d3d.co.za>
- *
- * 18-aug-2000: Cleanup by Erik Mouw (J.A.K.Mouw@its.tudelft.nl)
- * Get rid of the special ide_init_hwif_ports() functions
- * and make a generalised function that can be used by all
- * architectures.
- */
- #include <linux/config.h>
- #include <asm/irq.h>
- #include <asm/hardware.h>
- #include <asm/mach-types.h>
- /*
- * Set up a hw structure for a specified data port, control port and IRQ.
- * This should follow whatever the default interface uses.
- */
- static __inline__ void
- ide_init_hwif_ports(hw_regs_t *hw, int data_port, int ctrl_port, int *irq)
- {
- ide_ioreg_t reg;
- int i;
- int regincr = 1;
-
- /* The Empeg board has the first two address lines unused */
- if (machine_is_empeg())
- regincr = 1 << 2;
- /* The LART doesn't use A0 for IDE */
- if (machine_is_lart())
- regincr = 1 << 1;
- /* Frodo has the first 14 address lines unused */
- if (machine_is_frodo())
- regincr = 1 << 14;
- memset(hw, 0, sizeof(*hw));
- reg = (ide_ioreg_t)data_port;
- for (i = IDE_DATA_OFFSET; i <= IDE_STATUS_OFFSET; i++) {
- hw->io_ports[i] = reg;
- reg += regincr;
- }
-
- hw->io_ports[IDE_CONTROL_OFFSET] = (ide_ioreg_t) ctrl_port;
-
- if (irq)
- *irq = 0;
- }
- /*
- * This registers the standard ports for this architecture with the IDE
- * driver.
- */
- static __inline__ void
- ide_init_default_hwifs(void)
- {
- if( machine_is_empeg() ){
- #ifdef CONFIG_SA1100_EMPEG
- hw_regs_t hw;
- /* First, do the SA1100 setup */
- /* PCMCIA IO space */
- MECR=0x21062106;
- /* Issue 3 is much neater than issue 2 */
- GPDR&=~(EMPEG_IDE1IRQ|EMPEG_IDE2IRQ);
- /* Interrupts on rising edge: lines are inverted before they get to
- the SA */
- set_GPIO_IRQ_edge( (EMPEG_IDE1IRQ|EMPEG_IDE2IRQ), GPIO_FALLING_EDGE );
- /* Take hard drives out of reset */
- GPSR=(EMPEG_IDERESET);
- /* Sonja and her successors have two IDE ports. */
- /* MAC 23/4/1999, swap these round so that the left hand
- hard disk is hda when viewed from the front. This
- doesn't match the silkscreen however. */
- ide_init_hwif_ports(&hw, PCMCIA_IO_0_BASE + 0x40, PCMCIA_IO_0_BASE + 0x78, NULL);
- hw.irq = EMPEG_IRQ_IDE2;
- ide_register_hw(&hw, NULL);
- ide_init_hwif_ports(&hw, PCMCIA_IO_0_BASE + 0x00, PCMCIA_IO_0_BASE + 0x38, NULL);
- hw.irq = ,EMPEG_IRQ_IDE1;
- ide_register_hw(&hw, NULL);
- #endif
- }
- else if( machine_is_victor() ){
- #ifdef CONFIG_SA1100_VICTOR
- hw_regs_t hw;
- /* Enable appropriate GPIOs as interrupt lines */
- GPDR &= ~GPIO_GPIO7;
- set_GPIO_IRQ_edge( GPIO_GPIO7, GPIO_RISING_EDGE );
- /* set the pcmcia interface timing */
- MECR = 0x00060006;
- ide_init_hwif_ports(&hw, PCMCIA_IO_0_BASE + 0x1f0, PCMCIA_IO_0_BASE + 0x3f6, NULL);
- hw.irq = IRQ_GPIO7;
- ide_register_hw(&hw, NULL);
- #endif
- }
- else if (machine_is_lart()) {
- #ifdef CONFIG_SA1100_LART
- hw_regs_t hw;
- /* Enable GPIO as interrupt line */
- GPDR &= ~LART_GPIO_IDE;
- set_GPIO_IRQ_edge(LART_GPIO_IDE, GPIO_RISING_EDGE);
-
- /* set PCMCIA interface timing */
- MECR = 0x00060006;
- /* init the interface */
- ide_init_hwif_ports(&hw, PCMCIA_IO_0_BASE + 0x0000, PCMCIA_IO_0_BASE + 0x1000, NULL);
- hw.irq = LART_IRQ_IDE;
- ide_register_hw(&hw, NULL);
- #endif
- }
- else if (machine_is_frodo ()) {
- #ifdef CONFIG_SA1100_FRODO
- hw_regs_t hw;
- /* enable GPIO as interrupt line */
- GPDR &= ~FRODO_IDE_GPIO;
- set_GPIO_IRQ_edge (FRODO_IDE_GPIO,GPIO_RISING_EDGE);
- /* init the interface */
- ide_init_hwif_ports (&hw,FRODO_IDE_DATA,FRODO_IDE_CTRL,NULL);
- hw.irq = FRODO_IDE_IRQ;
- ide_register_hw (&hw,NULL);
- #endif
- }
- }