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1da177e4 LT |
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 | } |