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authorDavid S. Miller <davem@davemloft.net>2008-08-27 20:01:57 -0400
committerDavid S. Miller <davem@davemloft.net>2008-08-29 05:13:10 -0400
commit334ae614772b1147435dce9be3911f9040dff0d9 (patch)
treea443e687646ab25744b20e43963f728870122e97 /drivers/sbus/dvma.c
parent7f06a3b2c162573c924f425053227a52b4bd7cb1 (diff)
sparc: Kill SBUS DVMA layer.
This thing was completely pointless. Just find the OF device in the parent of drivers that want to program this device, and map the DMA regs inside such drivers too. This also moves the dummy claim_dma_lock() and release_dma_lock() implementation to floppy_32.h, which makes it handle this issue just like floppy_64.h does. Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/sbus/dvma.c')
-rw-r--r--drivers/sbus/dvma.c136
1 files changed, 0 insertions, 136 deletions
diff --git a/drivers/sbus/dvma.c b/drivers/sbus/dvma.c
deleted file mode 100644
index ab0d2de3324c..000000000000
--- a/drivers/sbus/dvma.c
+++ /dev/null
@@ -1,136 +0,0 @@
1/* dvma.c: Routines that are used to access DMA on the Sparc SBus.
2 *
3 * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
4 */
5
6#include <linux/string.h>
7#include <linux/kernel.h>
8#include <linux/slab.h>
9#include <linux/init.h>
10#include <linux/delay.h>
11
12#include <asm/oplib.h>
13#include <asm/io.h>
14#include <asm/dma.h>
15#include <asm/sbus.h>
16
17struct sbus_dma *dma_chain;
18
19static void __init init_one_dvma(struct sbus_dma *dma, int num_dma)
20{
21 printk("dma%d: ", num_dma);
22
23 dma->next = NULL;
24 dma->running = 0; /* No transfers going on as of yet */
25 dma->allocated = 0; /* No one has allocated us yet */
26 switch(sbus_readl(dma->regs + DMA_CSR)&DMA_DEVICE_ID) {
27 case DMA_VERS0:
28 dma->revision = dvmarev0;
29 printk("Revision 0 ");
30 break;
31 case DMA_ESCV1:
32 dma->revision = dvmaesc1;
33 printk("ESC Revision 1 ");
34 break;
35 case DMA_VERS1:
36 dma->revision = dvmarev1;
37 printk("Revision 1 ");
38 break;
39 case DMA_VERS2:
40 dma->revision = dvmarev2;
41 printk("Revision 2 ");
42 break;
43 case DMA_VERHME:
44 dma->revision = dvmahme;
45 printk("HME DVMA gate array ");
46 break;
47 case DMA_VERSPLUS:
48 dma->revision = dvmarevplus;
49 printk("Revision 1 PLUS ");
50 break;
51 default:
52 printk("unknown dma version %08x",
53 sbus_readl(dma->regs + DMA_CSR) & DMA_DEVICE_ID);
54 dma->allocated = 1;
55 break;
56 }
57 printk("\n");
58}
59
60/* Probe this SBus DMA module(s) */
61void __init dvma_init(struct sbus_bus *sbus)
62{
63 struct sbus_dev *this_dev;
64 struct sbus_dma *dma;
65 struct sbus_dma *dchain;
66 static int num_dma = 0;
67
68 for_each_sbusdev(this_dev, sbus) {
69 char *name = this_dev->prom_name;
70 int hme = 0;
71
72 if(!strcmp(name, "SUNW,fas"))
73 hme = 1;
74 else if(strcmp(name, "dma") &&
75 strcmp(name, "ledma") &&
76 strcmp(name, "espdma"))
77 continue;
78
79 /* Found one... */
80 dma = kmalloc(sizeof(struct sbus_dma), GFP_ATOMIC);
81
82 dma->sdev = this_dev;
83
84 /* Put at end of dma chain */
85 dchain = dma_chain;
86 if(dchain) {
87 while(dchain->next)
88 dchain = dchain->next;
89 dchain->next = dma;
90 } else {
91 /* We're the first in line */
92 dma_chain = dma;
93 }
94
95 dma->regs = sbus_ioremap(&dma->sdev->resource[0], 0,
96 dma->sdev->resource[0].end - dma->sdev->resource[0].start + 1,
97 "dma");
98
99 dma->node = dma->sdev->prom_node;
100
101 init_one_dvma(dma, num_dma++);
102 }
103}
104
105#ifdef CONFIG_SUN4
106
107#include <asm/sun4paddr.h>
108
109void __init sun4_dvma_init(void)
110{
111 struct sbus_dma *dma;
112 struct resource r;
113
114 if(sun4_dma_physaddr) {
115 dma = kmalloc(sizeof(struct sbus_dma), GFP_ATOMIC);
116
117 /* No SBUS */
118 dma->sdev = NULL;
119
120 /* Only one DMA device */
121 dma_chain = dma;
122
123 memset(&r, 0, sizeof(r));
124 r.start = sun4_dma_physaddr;
125 dma->regs = sbus_ioremap(&r, 0, PAGE_SIZE, "dma");
126
127 /* No prom node */
128 dma->node = 0x0;
129
130 init_one_dvma(dma, 0);
131 } else {
132 dma_chain = NULL;
133 }
134}
135
136#endif