1 /*
2 * linux/include/asm-arm/arch-sa1100/ide.h
3 *
4 * Copyright (c) 1998 Hugo Fiennes & Nicolas Pitre
5 *
6 * 26-feb-2002: Add support for 2d3D SA-1110 Development board
7 * Abraham van der Merwe <abraham@2d3d.co.za>
8 *
9 * 18-aug-2000: Cleanup by Erik Mouw (J.A.K.Mouw@its.tudelft.nl)
10 * Get rid of the special ide_init_hwif_ports() functions
11 * and make a generalised function that can be used by all
12 * architectures.
13 */
14
15 #include <linux/config.h>
16 #include <asm/irq.h>
17 #include <asm/hardware.h>
18 #include <asm/mach-types.h>
19
20
21 /*
22 * Set up a hw structure for a specified data port, control port and IRQ.
23 * This should follow whatever the default interface uses.
24 */
25 static __inline__ void
ide_init_hwif_ports(hw_regs_t * hw,int data_port,int ctrl_port,int * irq)26 ide_init_hwif_ports(hw_regs_t *hw, int data_port, int ctrl_port, int *irq)
27 {
28 ide_ioreg_t reg;
29 int i;
30 int regincr = 1;
31
32 /* The Empeg board has the first two address lines unused */
33 if (machine_is_empeg())
34 regincr = 1 << 2;
35
36 /* The LART doesn't use A0 for IDE */
37 if (machine_is_lart())
38 regincr = 1 << 1;
39
40 /* Frodo has the first 14 address lines unused */
41 if (machine_is_frodo())
42 regincr = 1 << 14;
43
44 memset(hw, 0, sizeof(*hw));
45
46 reg = (ide_ioreg_t)data_port;
47
48 for (i = IDE_DATA_OFFSET; i <= IDE_STATUS_OFFSET; i++) {
49 hw->io_ports[i] = reg;
50 reg += regincr;
51 }
52
53 hw->io_ports[IDE_CONTROL_OFFSET] = (ide_ioreg_t) ctrl_port;
54
55 if (irq)
56 *irq = 0;
57 }
58
59
60
61
62 /*
63 * This registers the standard ports for this architecture with the IDE
64 * driver.
65 */
66 static __inline__ void
ide_init_default_hwifs(void)67 ide_init_default_hwifs(void)
68 {
69 if( machine_is_empeg() ){
70 #ifdef CONFIG_SA1100_EMPEG
71 hw_regs_t hw;
72
73 /* First, do the SA1100 setup */
74
75 /* PCMCIA IO space */
76 MECR=0x21062106;
77
78 /* Issue 3 is much neater than issue 2 */
79 GPDR&=~(EMPEG_IDE1IRQ|EMPEG_IDE2IRQ);
80
81 /* Interrupts on rising edge: lines are inverted before they get to
82 the SA */
83 set_GPIO_IRQ_edge( (EMPEG_IDE1IRQ|EMPEG_IDE2IRQ), GPIO_FALLING_EDGE );
84
85 /* Take hard drives out of reset */
86 GPSR=(EMPEG_IDERESET);
87
88 /* Sonja and her successors have two IDE ports. */
89 /* MAC 23/4/1999, swap these round so that the left hand
90 hard disk is hda when viewed from the front. This
91 doesn't match the silkscreen however. */
92 ide_init_hwif_ports(&hw, PCMCIA_IO_0_BASE + 0x40, PCMCIA_IO_0_BASE + 0x78, NULL);
93 hw.irq = EMPEG_IRQ_IDE2;
94 ide_register_hw(&hw, NULL);
95 ide_init_hwif_ports(&hw, PCMCIA_IO_0_BASE + 0x00, PCMCIA_IO_0_BASE + 0x38, NULL);
96 hw.irq = ,EMPEG_IRQ_IDE1;
97 ide_register_hw(&hw, NULL);
98 #endif
99 }
100
101 else if( machine_is_victor() ){
102 #ifdef CONFIG_SA1100_VICTOR
103 hw_regs_t hw;
104
105 /* Enable appropriate GPIOs as interrupt lines */
106 GPDR &= ~GPIO_GPIO7;
107 set_GPIO_IRQ_edge( GPIO_GPIO7, GPIO_RISING_EDGE );
108
109 /* set the pcmcia interface timing */
110 MECR = 0x00060006;
111
112 ide_init_hwif_ports(&hw, PCMCIA_IO_0_BASE + 0x1f0, PCMCIA_IO_0_BASE + 0x3f6, NULL);
113 hw.irq = IRQ_GPIO7;
114 ide_register_hw(&hw, NULL);
115 #endif
116 }
117 else if (machine_is_lart()) {
118 #ifdef CONFIG_SA1100_LART
119 hw_regs_t hw;
120
121 /* Enable GPIO as interrupt line */
122 GPDR &= ~LART_GPIO_IDE;
123 set_GPIO_IRQ_edge(LART_GPIO_IDE, GPIO_RISING_EDGE);
124
125 /* set PCMCIA interface timing */
126 MECR = 0x00060006;
127
128 /* init the interface */
129 ide_init_hwif_ports(&hw, PCMCIA_IO_0_BASE + 0x0000, PCMCIA_IO_0_BASE + 0x1000, NULL);
130 hw.irq = LART_IRQ_IDE;
131 ide_register_hw(&hw, NULL);
132 #endif
133 }
134 else if (machine_is_frodo ()) {
135 #ifdef CONFIG_SA1100_FRODO
136 hw_regs_t hw;
137
138 /* enable GPIO as interrupt line */
139 GPDR &= ~FRODO_IDE_GPIO;
140 set_GPIO_IRQ_edge (FRODO_IDE_GPIO,GPIO_RISING_EDGE);
141
142 /* init the interface */
143 ide_init_hwif_ports (&hw,FRODO_IDE_DATA,FRODO_IDE_CTRL,NULL);
144 hw.irq = FRODO_IDE_IRQ;
145 ide_register_hw (&hw,NULL);
146 #endif
147 }
148 }
149
150
151