diff options
Diffstat (limited to 'include/asm-sparc64/parport.h')
-rw-r--r-- | include/asm-sparc64/parport.h | 175 |
1 files changed, 175 insertions, 0 deletions
diff --git a/include/asm-sparc64/parport.h b/include/asm-sparc64/parport.h new file mode 100644 index 000000000000..ab88349ddadc --- /dev/null +++ b/include/asm-sparc64/parport.h | |||
@@ -0,0 +1,175 @@ | |||
1 | /* $Id: parport.h,v 1.11 2001/05/11 07:54:24 davem Exp $ | ||
2 | * parport.h: sparc64 specific parport initialization and dma. | ||
3 | * | ||
4 | * Copyright (C) 1999 Eddie C. Dost (ecd@skynet.be) | ||
5 | */ | ||
6 | |||
7 | #ifndef _ASM_SPARC64_PARPORT_H | ||
8 | #define _ASM_SPARC64_PARPORT_H 1 | ||
9 | |||
10 | #include <asm/ebus.h> | ||
11 | #include <asm/isa.h> | ||
12 | #include <asm/ns87303.h> | ||
13 | |||
14 | #define PARPORT_PC_MAX_PORTS PARPORT_MAX | ||
15 | |||
16 | static struct sparc_ebus_info { | ||
17 | struct ebus_dma_info info; | ||
18 | unsigned int addr; | ||
19 | unsigned int count; | ||
20 | } sparc_ebus_dmas[PARPORT_PC_MAX_PORTS]; | ||
21 | |||
22 | static __inline__ void enable_dma(unsigned int dmanr) | ||
23 | { | ||
24 | if (ebus_dma_request(&sparc_ebus_dmas[dmanr].info, | ||
25 | sparc_ebus_dmas[dmanr].addr, | ||
26 | sparc_ebus_dmas[dmanr].count)) | ||
27 | BUG(); | ||
28 | |||
29 | ebus_dma_enable(&sparc_ebus_dmas[dmanr].info, 1); | ||
30 | } | ||
31 | |||
32 | static __inline__ void disable_dma(unsigned int dmanr) | ||
33 | { | ||
34 | ebus_dma_enable(&sparc_ebus_dmas[dmanr].info, 0); | ||
35 | } | ||
36 | |||
37 | static __inline__ void clear_dma_ff(unsigned int dmanr) | ||
38 | { | ||
39 | /* nothing */ | ||
40 | } | ||
41 | |||
42 | static __inline__ void set_dma_mode(unsigned int dmanr, char mode) | ||
43 | { | ||
44 | ebus_dma_prepare(&sparc_ebus_dmas[dmanr].info, (mode != DMA_MODE_WRITE)); | ||
45 | } | ||
46 | |||
47 | static __inline__ void set_dma_addr(unsigned int dmanr, unsigned int addr) | ||
48 | { | ||
49 | sparc_ebus_dmas[dmanr].addr = addr; | ||
50 | } | ||
51 | |||
52 | static __inline__ void set_dma_count(unsigned int dmanr, unsigned int count) | ||
53 | { | ||
54 | sparc_ebus_dmas[dmanr].count = count; | ||
55 | } | ||
56 | |||
57 | static __inline__ unsigned int get_dma_residue(unsigned int dmanr) | ||
58 | { | ||
59 | return ebus_dma_residue(&sparc_ebus_dmas[dmanr].info); | ||
60 | } | ||
61 | |||
62 | static int ebus_ecpp_p(struct linux_ebus_device *edev) | ||
63 | { | ||
64 | if (!strcmp(edev->prom_name, "ecpp")) | ||
65 | return 1; | ||
66 | if (!strcmp(edev->prom_name, "parallel")) { | ||
67 | char compat[19]; | ||
68 | prom_getstring(edev->prom_node, | ||
69 | "compatible", | ||
70 | compat, sizeof(compat)); | ||
71 | compat[18] = '\0'; | ||
72 | if (!strcmp(compat, "ecpp")) | ||
73 | return 1; | ||
74 | if (!strcmp(compat, "ns87317-ecpp") && | ||
75 | !strcmp(compat + 13, "ecpp")) | ||
76 | return 1; | ||
77 | } | ||
78 | return 0; | ||
79 | } | ||
80 | |||
81 | static int parport_isa_probe(int count) | ||
82 | { | ||
83 | struct sparc_isa_bridge *isa_br; | ||
84 | struct sparc_isa_device *isa_dev; | ||
85 | |||
86 | for_each_isa(isa_br) { | ||
87 | for_each_isadev(isa_dev, isa_br) { | ||
88 | struct sparc_isa_device *child; | ||
89 | unsigned long base; | ||
90 | |||
91 | if (strcmp(isa_dev->prom_name, "dma")) | ||
92 | continue; | ||
93 | |||
94 | child = isa_dev->child; | ||
95 | while (child) { | ||
96 | if (!strcmp(child->prom_name, "parallel")) | ||
97 | break; | ||
98 | child = child->next; | ||
99 | } | ||
100 | if (!child) | ||
101 | continue; | ||
102 | |||
103 | base = child->resource.start; | ||
104 | |||
105 | /* No DMA, see commentary in | ||
106 | * asm-sparc64/floppy.h:isa_floppy_init() | ||
107 | */ | ||
108 | if (parport_pc_probe_port(base, base + 0x400, | ||
109 | child->irq, PARPORT_DMA_NOFIFO, | ||
110 | child->bus->self)) | ||
111 | count++; | ||
112 | } | ||
113 | } | ||
114 | |||
115 | return count; | ||
116 | } | ||
117 | |||
118 | static int parport_pc_find_nonpci_ports (int autoirq, int autodma) | ||
119 | { | ||
120 | struct linux_ebus *ebus; | ||
121 | struct linux_ebus_device *edev; | ||
122 | int count = 0; | ||
123 | |||
124 | for_each_ebus(ebus) { | ||
125 | for_each_ebusdev(edev, ebus) { | ||
126 | if (ebus_ecpp_p(edev)) { | ||
127 | unsigned long base = edev->resource[0].start; | ||
128 | unsigned long config = edev->resource[1].start; | ||
129 | unsigned long d_base = edev->resource[2].start; | ||
130 | unsigned long d_len; | ||
131 | |||
132 | spin_lock_init(&sparc_ebus_dmas[count].info.lock); | ||
133 | d_len = (edev->resource[2].end - | ||
134 | d_base) + 1; | ||
135 | sparc_ebus_dmas[count].info.regs = | ||
136 | ioremap(d_base, d_len); | ||
137 | if (!sparc_ebus_dmas[count].info.regs) | ||
138 | continue; | ||
139 | sparc_ebus_dmas[count].info.flags = 0; | ||
140 | sparc_ebus_dmas[count].info.callback = NULL; | ||
141 | sparc_ebus_dmas[count].info.client_cookie = NULL; | ||
142 | sparc_ebus_dmas[count].info.irq = 0xdeadbeef; | ||
143 | strcpy(sparc_ebus_dmas[count].info.name, "parport"); | ||
144 | if (ebus_dma_register(&sparc_ebus_dmas[count].info)) | ||
145 | continue; | ||
146 | ebus_dma_irq_enable(&sparc_ebus_dmas[count].info, 1); | ||
147 | |||
148 | /* Configure IRQ to Push Pull, Level Low */ | ||
149 | /* Enable ECP, set bit 2 of the CTR first */ | ||
150 | outb(0x04, base + 0x02); | ||
151 | ns87303_modify(config, PCR, | ||
152 | PCR_EPP_ENABLE | | ||
153 | PCR_IRQ_ODRAIN, | ||
154 | PCR_ECP_ENABLE | | ||
155 | PCR_ECP_CLK_ENA | | ||
156 | PCR_IRQ_POLAR); | ||
157 | |||
158 | /* CTR bit 5 controls direction of port */ | ||
159 | ns87303_modify(config, PTR, | ||
160 | 0, PTR_LPT_REG_DIR); | ||
161 | |||
162 | if (parport_pc_probe_port(base, base + 0x400, | ||
163 | edev->irqs[0], | ||
164 | count, ebus->self)) | ||
165 | count++; | ||
166 | } | ||
167 | } | ||
168 | } | ||
169 | |||
170 | count = parport_isa_probe(count); | ||
171 | |||
172 | return count; | ||
173 | } | ||
174 | |||
175 | #endif /* !(_ASM_SPARC64_PARPORT_H */ | ||