include/asm-arm/arch-sa1100/ide.h

   1 /*
   2  * linux/include/asm-arm/arch-sa1100/ide.h
   3  *
   4  * Copyright (c) 1998 Hugo Fiennes & Nicolas Pitre
   5  *
   6  * 18-aug-2000: Cleanup by Erik Mouw (J.A.K.Mouw@its.tudelft.nl)
   7  *              Get rid of the special ide_init_hwif_ports() functions
   8  *              and make a generalised function that can be used by all
   9  *              architectures.
  10  */
  11
  12 #include <asm/irq.h>
  13 #include <asm/hardware.h>
  14 #include <asm/mach-types.h>
  15
  16 #error "This code is broken and needs update to match with current ide support"
  17
  18
  19 /*
  20  * Set up a hw structure for a specified data port, control port and IRQ.
  21  * This should follow whatever the default interface uses.
  22  */
  23 static inline void ide_init_hwif_ports(hw_regs_t *hw, unsigned long data_port,
  24                                        unsigned long ctrl_port, int *irq)
  25 {
  26         unsigned long reg = data_port;
  27         int i;
  28         int regincr = 1;
  29
  30         /* The Empeg board has the first two address lines unused */
  31         if (machine_is_empeg())
  32                 regincr = 1 << 2;
  33
  34         /* The LART doesn't use A0 for IDE */
  35         if (machine_is_lart())
  36                 regincr = 1 << 1;
  37
  38         memset(hw, 0, sizeof(*hw));
  39
  40         for (i = IDE_DATA_OFFSET; i <= IDE_STATUS_OFFSET; i++) {
  41                 hw->io_ports[i] = reg;
  42                 reg += regincr;
  43         }
  44
  45         hw->io_ports[IDE_CONTROL_OFFSET] = ctrl_port;
  46
  47         if (irq)
  48                 *irq = 0;
  49 }
  50
  51 /*
  52  * This registers the standard ports for this architecture with the IDE
  53  * driver.
  54  */
  55 static __inline__ void
  56 ide_init_default_hwifs(void)
  57 {
  58     if (machine_is_lart()) {
  59 #ifdef CONFIG_SA1100_LART
  60         hw_regs_t hw;
  61
  62         /* Enable GPIO as interrupt line */
  63         GPDR &= ~LART_GPIO_IDE;
  64         set_irq_type(LART_IRQ_IDE, IRQT_RISING);
  65
  66         /* set PCMCIA interface timing */
  67         MECR = 0x00060006;
  68
  69         /* init the interface */
  70         ide_init_hwif_ports(&hw, PCMCIA_IO_0_BASE + 0x0000, PCMCIA_IO_0_BASE + 0x1000, NULL);
  71         hw.irq = LART_IRQ_IDE;
  72         ide_register_hw(&hw);
  73 #endif
  74     }
  75 }