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 <linux/config.h>
  13 #include <asm/irq.h>
  14 #include <asm/hardware.h>
  15 #include <asm/mach-types.h>
  16
  17 #error "This code is broken and needs update to match with current ide support"
  18
  19
  20 /*
  21  * Set up a hw structure for a specified data port, control port and IRQ.
  22  * This should follow whatever the default interface uses.
  23  */
  24 static inline void ide_init_hwif_ports(hw_regs_t *hw, unsigned long data_port,
  25                                        unsigned long ctrl_port, int *irq)
  26 {
  27         unsigned long reg = data_port;
  28         int i;
  29         int regincr = 1;
  30
  31         /* The Empeg board has the first two address lines unused */
  32         if (machine_is_empeg())
  33                 regincr = 1 << 2;
  34
  35         /* The LART doesn't use A0 for IDE */
  36         if (machine_is_lart())
  37                 regincr = 1 << 1;
  38
  39         memset(hw, 0, sizeof(*hw));
  40
  41         for (i = IDE_DATA_OFFSET; i <= IDE_STATUS_OFFSET; i++) {
  42                 hw->io_ports[i] = reg;
  43                 reg += regincr;
  44         }
  45
  46         hw->io_ports[IDE_CONTROL_OFFSET] = ctrl_port;
  47
  48         if (irq)
  49                 *irq = 0;
  50 }
  51
  52 /*
  53  * This registers the standard ports for this architecture with the IDE
  54  * driver.
  55  */
  56 static __inline__ void
  57 ide_init_default_hwifs(void)
  58 {
  59     if (machine_is_lart()) {
  60 #ifdef CONFIG_SA1100_LART
  61         hw_regs_t hw;
  62
  63         /* Enable GPIO as interrupt line */
  64         GPDR &= ~LART_GPIO_IDE;
  65         set_irq_type(LART_IRQ_IDE, IRQT_RISING);
  66
  67         /* set PCMCIA interface timing */
  68         MECR = 0x00060006;
  69
  70         /* init the interface */
  71         ide_init_hwif_ports(&hw, PCMCIA_IO_0_BASE + 0x0000, PCMCIA_IO_0_BASE + 0x1000, NULL);
  72         hw.irq = LART_IRQ_IDE;
  73         ide_register_hw(&hw);
  74 #endif
  75     }
  76 }