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Diffstat (limited to 'drivers/scsi/a2091.c')
-rw-r--r--drivers/scsi/a2091.c299
1 files changed, 150 insertions, 149 deletions
diff --git a/drivers/scsi/a2091.c b/drivers/scsi/a2091.c
index e89064dc8cb0..8469c239f9fb 100644
--- a/drivers/scsi/a2091.c
+++ b/drivers/scsi/a2091.c
@@ -19,185 +19,186 @@
19#include "wd33c93.h" 19#include "wd33c93.h"
20#include "a2091.h" 20#include "a2091.h"
21 21
22#include<linux/stat.h> 22#include <linux/stat.h>
23 23
24#define DMA(ptr) ((a2091_scsiregs *)((ptr)->base)) 24
25#define HDATA(ptr) ((struct WD33C93_hostdata *)((ptr)->hostdata)) 25#define DMA(ptr) ((a2091_scsiregs *)((ptr)->base))
26#define HDATA(ptr) ((struct WD33C93_hostdata *)((ptr)->hostdata))
26 27
27static int a2091_release(struct Scsi_Host *instance); 28static int a2091_release(struct Scsi_Host *instance);
28 29
29static irqreturn_t a2091_intr (int irq, void *_instance) 30static irqreturn_t a2091_intr(int irq, void *_instance)
30{ 31{
31 unsigned long flags; 32 unsigned long flags;
32 unsigned int status; 33 unsigned int status;
33 struct Scsi_Host *instance = (struct Scsi_Host *)_instance; 34 struct Scsi_Host *instance = (struct Scsi_Host *)_instance;
34 35
35 status = DMA(instance)->ISTR; 36 status = DMA(instance)->ISTR;
36 if (!(status & (ISTR_INT_F|ISTR_INT_P)) || !(status & ISTR_INTS)) 37 if (!(status & (ISTR_INT_F | ISTR_INT_P)) || !(status & ISTR_INTS))
37 return IRQ_NONE; 38 return IRQ_NONE;
38 39
39 spin_lock_irqsave(instance->host_lock, flags); 40 spin_lock_irqsave(instance->host_lock, flags);
40 wd33c93_intr(instance); 41 wd33c93_intr(instance);
41 spin_unlock_irqrestore(instance->host_lock, flags); 42 spin_unlock_irqrestore(instance->host_lock, flags);
42 return IRQ_HANDLED; 43 return IRQ_HANDLED;
43} 44}
44 45
45static int dma_setup(struct scsi_cmnd *cmd, int dir_in) 46static int dma_setup(struct scsi_cmnd *cmd, int dir_in)
46{ 47{
47 unsigned short cntr = CNTR_PDMD | CNTR_INTEN; 48 unsigned short cntr = CNTR_PDMD | CNTR_INTEN;
48 unsigned long addr = virt_to_bus(cmd->SCp.ptr); 49 unsigned long addr = virt_to_bus(cmd->SCp.ptr);
49 struct Scsi_Host *instance = cmd->device->host; 50 struct Scsi_Host *instance = cmd->device->host;
50
51 /* don't allow DMA if the physical address is bad */
52 if (addr & A2091_XFER_MASK)
53 {
54 HDATA(instance)->dma_bounce_len = (cmd->SCp.this_residual + 511)
55 & ~0x1ff;
56 HDATA(instance)->dma_bounce_buffer =
57 kmalloc (HDATA(instance)->dma_bounce_len, GFP_KERNEL);
58
59 /* can't allocate memory; use PIO */
60 if (!HDATA(instance)->dma_bounce_buffer) {
61 HDATA(instance)->dma_bounce_len = 0;
62 return 1;
63 }
64
65 /* get the physical address of the bounce buffer */
66 addr = virt_to_bus(HDATA(instance)->dma_bounce_buffer);
67 51
68 /* the bounce buffer may not be in the first 16M of physmem */ 52 /* don't allow DMA if the physical address is bad */
69 if (addr & A2091_XFER_MASK) { 53 if (addr & A2091_XFER_MASK) {
70 /* we could use chipmem... maybe later */ 54 HDATA(instance)->dma_bounce_len =
71 kfree (HDATA(instance)->dma_bounce_buffer); 55 (cmd->SCp.this_residual + 511) & ~0x1ff;
72 HDATA(instance)->dma_bounce_buffer = NULL; 56 HDATA(instance)->dma_bounce_buffer =
73 HDATA(instance)->dma_bounce_len = 0; 57 kmalloc(HDATA(instance)->dma_bounce_len, GFP_KERNEL);
74 return 1; 58
75 } 59 /* can't allocate memory; use PIO */
76 60 if (!HDATA(instance)->dma_bounce_buffer) {
77 if (!dir_in) { 61 HDATA(instance)->dma_bounce_len = 0;
78 /* copy to bounce buffer for a write */ 62 return 1;
79 memcpy (HDATA(instance)->dma_bounce_buffer, 63 }
80 cmd->SCp.ptr, cmd->SCp.this_residual); 64
65 /* get the physical address of the bounce buffer */
66 addr = virt_to_bus(HDATA(instance)->dma_bounce_buffer);
67
68 /* the bounce buffer may not be in the first 16M of physmem */
69 if (addr & A2091_XFER_MASK) {
70 /* we could use chipmem... maybe later */
71 kfree(HDATA(instance)->dma_bounce_buffer);
72 HDATA(instance)->dma_bounce_buffer = NULL;
73 HDATA(instance)->dma_bounce_len = 0;
74 return 1;
75 }
76
77 if (!dir_in) {
78 /* copy to bounce buffer for a write */
79 memcpy(HDATA(instance)->dma_bounce_buffer,
80 cmd->SCp.ptr, cmd->SCp.this_residual);
81 }
81 } 82 }
82 }
83 83
84 /* setup dma direction */ 84 /* setup dma direction */
85 if (!dir_in) 85 if (!dir_in)
86 cntr |= CNTR_DDIR; 86 cntr |= CNTR_DDIR;
87 87
88 /* remember direction */ 88 /* remember direction */
89 HDATA(cmd->device->host)->dma_dir = dir_in; 89 HDATA(cmd->device->host)->dma_dir = dir_in;
90 90
91 DMA(cmd->device->host)->CNTR = cntr; 91 DMA(cmd->device->host)->CNTR = cntr;
92 92
93 /* setup DMA *physical* address */ 93 /* setup DMA *physical* address */
94 DMA(cmd->device->host)->ACR = addr; 94 DMA(cmd->device->host)->ACR = addr;
95 95
96 if (dir_in){ 96 if (dir_in) {
97 /* invalidate any cache */ 97 /* invalidate any cache */
98 cache_clear (addr, cmd->SCp.this_residual); 98 cache_clear(addr, cmd->SCp.this_residual);
99 }else{ 99 } else {
100 /* push any dirty cache */ 100 /* push any dirty cache */
101 cache_push (addr, cmd->SCp.this_residual); 101 cache_push(addr, cmd->SCp.this_residual);
102 } 102 }
103 /* start DMA */ 103 /* start DMA */
104 DMA(cmd->device->host)->ST_DMA = 1; 104 DMA(cmd->device->host)->ST_DMA = 1;
105 105
106 /* return success */ 106 /* return success */
107 return 0; 107 return 0;
108} 108}
109 109
110static void dma_stop(struct Scsi_Host *instance, struct scsi_cmnd *SCpnt, 110static void dma_stop(struct Scsi_Host *instance, struct scsi_cmnd *SCpnt,
111 int status) 111 int status)
112{ 112{
113 /* disable SCSI interrupts */ 113 /* disable SCSI interrupts */
114 unsigned short cntr = CNTR_PDMD; 114 unsigned short cntr = CNTR_PDMD;
115 115
116 if (!HDATA(instance)->dma_dir) 116 if (!HDATA(instance)->dma_dir)
117 cntr |= CNTR_DDIR; 117 cntr |= CNTR_DDIR;
118 118
119 /* disable SCSI interrupts */ 119 /* disable SCSI interrupts */
120 DMA(instance)->CNTR = cntr; 120 DMA(instance)->CNTR = cntr;
121 121
122 /* flush if we were reading */ 122 /* flush if we were reading */
123 if (HDATA(instance)->dma_dir) { 123 if (HDATA(instance)->dma_dir) {
124 DMA(instance)->FLUSH = 1; 124 DMA(instance)->FLUSH = 1;
125 while (!(DMA(instance)->ISTR & ISTR_FE_FLG)) 125 while (!(DMA(instance)->ISTR & ISTR_FE_FLG))
126 ; 126 ;
127 } 127 }
128 128
129 /* clear a possible interrupt */ 129 /* clear a possible interrupt */
130 DMA(instance)->CINT = 1; 130 DMA(instance)->CINT = 1;
131 131
132 /* stop DMA */ 132 /* stop DMA */
133 DMA(instance)->SP_DMA = 1; 133 DMA(instance)->SP_DMA = 1;
134 134
135 /* restore the CONTROL bits (minus the direction flag) */ 135 /* restore the CONTROL bits (minus the direction flag) */
136 DMA(instance)->CNTR = CNTR_PDMD | CNTR_INTEN; 136 DMA(instance)->CNTR = CNTR_PDMD | CNTR_INTEN;
137 137
138 /* copy from a bounce buffer, if necessary */ 138 /* copy from a bounce buffer, if necessary */
139 if (status && HDATA(instance)->dma_bounce_buffer) { 139 if (status && HDATA(instance)->dma_bounce_buffer) {
140 if( HDATA(instance)->dma_dir ) 140 if (HDATA(instance)->dma_dir)
141 memcpy (SCpnt->SCp.ptr, 141 memcpy(SCpnt->SCp.ptr,
142 HDATA(instance)->dma_bounce_buffer, 142 HDATA(instance)->dma_bounce_buffer,
143 SCpnt->SCp.this_residual); 143 SCpnt->SCp.this_residual);
144 kfree (HDATA(instance)->dma_bounce_buffer); 144 kfree(HDATA(instance)->dma_bounce_buffer);
145 HDATA(instance)->dma_bounce_buffer = NULL; 145 HDATA(instance)->dma_bounce_buffer = NULL;
146 HDATA(instance)->dma_bounce_len = 0; 146 HDATA(instance)->dma_bounce_len = 0;
147 } 147 }
148} 148}
149 149
150static int __init a2091_detect(struct scsi_host_template *tpnt) 150static int __init a2091_detect(struct scsi_host_template *tpnt)
151{ 151{
152 static unsigned char called = 0; 152 static unsigned char called = 0;
153 struct Scsi_Host *instance; 153 struct Scsi_Host *instance;
154 unsigned long address; 154 unsigned long address;
155 struct zorro_dev *z = NULL; 155 struct zorro_dev *z = NULL;
156 wd33c93_regs regs; 156 wd33c93_regs regs;
157 int num_a2091 = 0; 157 int num_a2091 = 0;
158 158
159 if (!MACH_IS_AMIGA || called) 159 if (!MACH_IS_AMIGA || called)
160 return 0; 160 return 0;
161 called = 1; 161 called = 1;
162 162
163 tpnt->proc_name = "A2091"; 163 tpnt->proc_name = "A2091";
164 tpnt->proc_info = &wd33c93_proc_info; 164 tpnt->proc_info = &wd33c93_proc_info;
165 165
166 while ((z = zorro_find_device(ZORRO_WILDCARD, z))) { 166 while ((z = zorro_find_device(ZORRO_WILDCARD, z))) {
167 if (z->id != ZORRO_PROD_CBM_A590_A2091_1 && 167 if (z->id != ZORRO_PROD_CBM_A590_A2091_1 &&
168 z->id != ZORRO_PROD_CBM_A590_A2091_2) 168 z->id != ZORRO_PROD_CBM_A590_A2091_2)
169 continue; 169 continue;
170 address = z->resource.start; 170 address = z->resource.start;
171 if (!request_mem_region(address, 256, "wd33c93")) 171 if (!request_mem_region(address, 256, "wd33c93"))
172 continue; 172 continue;
173 173
174 instance = scsi_register (tpnt, sizeof (struct WD33C93_hostdata)); 174 instance = scsi_register(tpnt, sizeof(struct WD33C93_hostdata));
175 if (instance == NULL) 175 if (instance == NULL)
176 goto release; 176 goto release;
177 instance->base = ZTWO_VADDR(address); 177 instance->base = ZTWO_VADDR(address);
178 instance->irq = IRQ_AMIGA_PORTS; 178 instance->irq = IRQ_AMIGA_PORTS;
179 instance->unique_id = z->slotaddr; 179 instance->unique_id = z->slotaddr;
180 DMA(instance)->DAWR = DAWR_A2091; 180 DMA(instance)->DAWR = DAWR_A2091;
181 regs.SASR = &(DMA(instance)->SASR); 181 regs.SASR = &(DMA(instance)->SASR);
182 regs.SCMD = &(DMA(instance)->SCMD); 182 regs.SCMD = &(DMA(instance)->SCMD);
183 HDATA(instance)->no_sync = 0xff; 183 HDATA(instance)->no_sync = 0xff;
184 HDATA(instance)->fast = 0; 184 HDATA(instance)->fast = 0;
185 HDATA(instance)->dma_mode = CTRL_DMA; 185 HDATA(instance)->dma_mode = CTRL_DMA;
186 wd33c93_init(instance, regs, dma_setup, dma_stop, WD33C93_FS_8_10); 186 wd33c93_init(instance, regs, dma_setup, dma_stop,
187 if (request_irq(IRQ_AMIGA_PORTS, a2091_intr, IRQF_SHARED, "A2091 SCSI", 187 WD33C93_FS_8_10);
188 instance)) 188 if (request_irq(IRQ_AMIGA_PORTS, a2091_intr, IRQF_SHARED,
189 goto unregister; 189 "A2091 SCSI", instance))
190 DMA(instance)->CNTR = CNTR_PDMD | CNTR_INTEN; 190 goto unregister;
191 num_a2091++; 191 DMA(instance)->CNTR = CNTR_PDMD | CNTR_INTEN;
192 continue; 192 num_a2091++;
193 continue;
193 194
194unregister: 195unregister:
195 scsi_unregister(instance); 196 scsi_unregister(instance);
196release: 197release:
197 release_mem_region(address, 256); 198 release_mem_region(address, 256);
198 } 199 }
199 200
200 return num_a2091; 201 return num_a2091;
201} 202}
202 203
203static int a2091_bus_reset(struct scsi_cmnd *cmd) 204static int a2091_bus_reset(struct scsi_cmnd *cmd)
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-15 06:19:53 -0500