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authorPaolo Ciarrocchi <paolo.ciarrocchi@gmail.com>2008-02-22 17:10:06 -0500
committerIngo Molnar <mingo@elte.hu>2008-04-17 11:40:49 -0400
commit0067cc996ee7a0dd282d8da5b64fa60aa2066bb2 (patch)
treebb360924bd5f44f4fdac4dd8c3d0c27154cb5d85 /arch
parentf73920cd63d316008738427a0df2caab6cc88ad7 (diff)
x86: coding style fixes to arch/x86/kernel/mca_32.c
Before: total: 42 errors, 3 warnings, 469 lines checked After: total: 0 errors, 3 warnings, 479 lines checked No code changed: arch/x86/kernel/mca_32.o: text data bss dec hex filename 1832 288 5 2125 84d mca_32.o.before 1832 288 5 2125 84d mca_32.o.after md5: c0e45e2b743ce26349eb07dc53e80b94 mca_32.o.before.asm c0e45e2b743ce26349eb07dc53e80b94 mca_32.o.after.asm Signed-off-by: Paolo Ciarrocchi <paolo.ciarrocchi@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch')
-rw-r--r--arch/x86/kernel/mca_32.c96
1 files changed, 53 insertions, 43 deletions
diff --git a/arch/x86/kernel/mca_32.c b/arch/x86/kernel/mca_32.c
index 9482033ed0fe..2dc183758be3 100644
--- a/arch/x86/kernel/mca_32.c
+++ b/arch/x86/kernel/mca_32.c
@@ -53,9 +53,9 @@
53#include <linux/init.h> 53#include <linux/init.h>
54#include <asm/arch_hooks.h> 54#include <asm/arch_hooks.h>
55 55
56static unsigned char which_scsi = 0; 56static unsigned char which_scsi;
57 57
58int MCA_bus = 0; 58int MCA_bus;
59EXPORT_SYMBOL(MCA_bus); 59EXPORT_SYMBOL(MCA_bus);
60 60
61/* 61/*
@@ -68,15 +68,17 @@ static DEFINE_SPINLOCK(mca_lock);
68 68
69/* Build the status info for the adapter */ 69/* Build the status info for the adapter */
70 70
71static void mca_configure_adapter_status(struct mca_device *mca_dev) { 71static void mca_configure_adapter_status(struct mca_device *mca_dev)
72{
72 mca_dev->status = MCA_ADAPTER_NONE; 73 mca_dev->status = MCA_ADAPTER_NONE;
73 74
74 mca_dev->pos_id = mca_dev->pos[0] 75 mca_dev->pos_id = mca_dev->pos[0]
75 + (mca_dev->pos[1] << 8); 76 + (mca_dev->pos[1] << 8);
76 77
77 if(!mca_dev->pos_id && mca_dev->slot < MCA_MAX_SLOT_NR) { 78 if (!mca_dev->pos_id && mca_dev->slot < MCA_MAX_SLOT_NR) {
78 79
79 /* id = 0x0000 usually indicates hardware failure, 80 /*
81 * id = 0x0000 usually indicates hardware failure,
80 * however, ZP Gu (zpg@castle.net> reports that his 9556 82 * however, ZP Gu (zpg@castle.net> reports that his 9556
81 * has 0x0000 as id and everything still works. There 83 * has 0x0000 as id and everything still works. There
82 * also seem to be an adapter with id = 0x0000; the 84 * also seem to be an adapter with id = 0x0000; the
@@ -87,9 +89,10 @@ static void mca_configure_adapter_status(struct mca_device *mca_dev) {
87 mca_dev->status = MCA_ADAPTER_ERROR; 89 mca_dev->status = MCA_ADAPTER_ERROR;
88 90
89 return; 91 return;
90 } else if(mca_dev->pos_id != 0xffff) { 92 } else if (mca_dev->pos_id != 0xffff) {
91 93
92 /* 0xffff usually indicates that there's no adapter, 94 /*
95 * 0xffff usually indicates that there's no adapter,
93 * however, some integrated adapters may have 0xffff as 96 * however, some integrated adapters may have 0xffff as
94 * their id and still be valid. Examples are on-board 97 * their id and still be valid. Examples are on-board
95 * VGA of the 55sx, the integrated SCSI of the 56 & 57, 98 * VGA of the 55sx, the integrated SCSI of the 56 & 57,
@@ -99,19 +102,19 @@ static void mca_configure_adapter_status(struct mca_device *mca_dev) {
99 mca_dev->status = MCA_ADAPTER_NORMAL; 102 mca_dev->status = MCA_ADAPTER_NORMAL;
100 } 103 }
101 104
102 if((mca_dev->pos_id == 0xffff || 105 if ((mca_dev->pos_id == 0xffff ||
103 mca_dev->pos_id == 0x0000) && mca_dev->slot >= MCA_MAX_SLOT_NR) { 106 mca_dev->pos_id == 0x0000) && mca_dev->slot >= MCA_MAX_SLOT_NR) {
104 int j; 107 int j;
105 108
106 for(j = 2; j < 8; j++) { 109 for (j = 2; j < 8; j++) {
107 if(mca_dev->pos[j] != 0xff) { 110 if (mca_dev->pos[j] != 0xff) {
108 mca_dev->status = MCA_ADAPTER_NORMAL; 111 mca_dev->status = MCA_ADAPTER_NORMAL;
109 break; 112 break;
110 } 113 }
111 } 114 }
112 } 115 }
113 116
114 if(!(mca_dev->pos[2] & MCA_ENABLED)) { 117 if (!(mca_dev->pos[2] & MCA_ENABLED)) {
115 118
116 /* enabled bit is in POS 2 */ 119 /* enabled bit is in POS 2 */
117 120
@@ -133,7 +136,7 @@ static struct resource mca_standard_resources[] = {
133 136
134#define MCA_STANDARD_RESOURCES ARRAY_SIZE(mca_standard_resources) 137#define MCA_STANDARD_RESOURCES ARRAY_SIZE(mca_standard_resources)
135 138
136/** 139/*
137 * mca_read_and_store_pos - read the POS registers into a memory buffer 140 * mca_read_and_store_pos - read the POS registers into a memory buffer
138 * @pos: a char pointer to 8 bytes, contains the POS register value on 141 * @pos: a char pointer to 8 bytes, contains the POS register value on
139 * successful return 142 * successful return
@@ -141,12 +144,14 @@ static struct resource mca_standard_resources[] = {
141 * Returns 1 if a card actually exists (i.e. the pos isn't 144 * Returns 1 if a card actually exists (i.e. the pos isn't
142 * all 0xff) or 0 otherwise 145 * all 0xff) or 0 otherwise
143 */ 146 */
144static int mca_read_and_store_pos(unsigned char *pos) { 147static int mca_read_and_store_pos(unsigned char *pos)
148{
145 int j; 149 int j;
146 int found = 0; 150 int found = 0;
147 151
148 for(j=0; j<8; j++) { 152 for (j = 0; j < 8; j++) {
149 if((pos[j] = inb_p(MCA_POS_REG(j))) != 0xff) { 153 pos[j] = inb_p(MCA_POS_REG(j));
154 if (pos[j] != 0xff) {
150 /* 0xff all across means no device. 0x00 means 155 /* 0xff all across means no device. 0x00 means
151 * something's broken, but a device is 156 * something's broken, but a device is
152 * probably there. However, if you get 0x00 157 * probably there. However, if you get 0x00
@@ -167,11 +172,11 @@ static unsigned char mca_pc_read_pos(struct mca_device *mca_dev, int reg)
167 unsigned char byte; 172 unsigned char byte;
168 unsigned long flags; 173 unsigned long flags;
169 174
170 if(reg < 0 || reg >= 8) 175 if (reg < 0 || reg >= 8)
171 return 0; 176 return 0;
172 177
173 spin_lock_irqsave(&mca_lock, flags); 178 spin_lock_irqsave(&mca_lock, flags);
174 if(mca_dev->pos_register) { 179 if (mca_dev->pos_register) {
175 /* Disable adapter setup, enable motherboard setup */ 180 /* Disable adapter setup, enable motherboard setup */
176 181
177 outb_p(0, MCA_ADAPTER_SETUP_REG); 182 outb_p(0, MCA_ADAPTER_SETUP_REG);
@@ -203,7 +208,7 @@ static void mca_pc_write_pos(struct mca_device *mca_dev, int reg,
203{ 208{
204 unsigned long flags; 209 unsigned long flags;
205 210
206 if(reg < 0 || reg >= 8) 211 if (reg < 0 || reg >= 8)
207 return; 212 return;
208 213
209 spin_lock_irqsave(&mca_lock, flags); 214 spin_lock_irqsave(&mca_lock, flags);
@@ -227,17 +232,17 @@ static void mca_pc_write_pos(struct mca_device *mca_dev, int reg,
227} 232}
228 233
229/* for the primary MCA bus, we have identity transforms */ 234/* for the primary MCA bus, we have identity transforms */
230static int mca_dummy_transform_irq(struct mca_device * mca_dev, int irq) 235static int mca_dummy_transform_irq(struct mca_device *mca_dev, int irq)
231{ 236{
232 return irq; 237 return irq;
233} 238}
234 239
235static int mca_dummy_transform_ioport(struct mca_device * mca_dev, int port) 240static int mca_dummy_transform_ioport(struct mca_device *mca_dev, int port)
236{ 241{
237 return port; 242 return port;
238} 243}
239 244
240static void *mca_dummy_transform_memory(struct mca_device * mca_dev, void *mem) 245static void *mca_dummy_transform_memory(struct mca_device *mca_dev, void *mem)
241{ 246{
242 return mem; 247 return mem;
243} 248}
@@ -251,7 +256,8 @@ static int __init mca_init(void)
251 short mca_builtin_scsi_ports[] = {0xf7, 0xfd, 0x00}; 256 short mca_builtin_scsi_ports[] = {0xf7, 0xfd, 0x00};
252 struct mca_bus *bus; 257 struct mca_bus *bus;
253 258
254 /* WARNING: Be careful when making changes here. Putting an adapter 259 /*
260 * WARNING: Be careful when making changes here. Putting an adapter
255 * and the motherboard simultaneously into setup mode may result in 261 * and the motherboard simultaneously into setup mode may result in
256 * damage to chips (according to The Indispensible PC Hardware Book 262 * damage to chips (according to The Indispensible PC Hardware Book
257 * by Hans-Peter Messmer). Also, we disable system interrupts (so 263 * by Hans-Peter Messmer). Also, we disable system interrupts (so
@@ -283,7 +289,7 @@ static int __init mca_init(void)
283 289
284 /* get the motherboard device */ 290 /* get the motherboard device */
285 mca_dev = kzalloc(sizeof(struct mca_device), GFP_KERNEL); 291 mca_dev = kzalloc(sizeof(struct mca_device), GFP_KERNEL);
286 if(unlikely(!mca_dev)) 292 if (unlikely(!mca_dev))
287 goto out_nomem; 293 goto out_nomem;
288 294
289 /* 295 /*
@@ -309,7 +315,7 @@ static int __init mca_init(void)
309 mca_register_device(MCA_PRIMARY_BUS, mca_dev); 315 mca_register_device(MCA_PRIMARY_BUS, mca_dev);
310 316
311 mca_dev = kzalloc(sizeof(struct mca_device), GFP_ATOMIC); 317 mca_dev = kzalloc(sizeof(struct mca_device), GFP_ATOMIC);
312 if(unlikely(!mca_dev)) 318 if (unlikely(!mca_dev))
313 goto out_unlock_nomem; 319 goto out_unlock_nomem;
314 320
315 /* Put motherboard into video setup mode, read integrated video 321 /* Put motherboard into video setup mode, read integrated video
@@ -326,7 +332,8 @@ static int __init mca_init(void)
326 mca_dev->slot = MCA_INTEGVIDEO; 332 mca_dev->slot = MCA_INTEGVIDEO;
327 mca_register_device(MCA_PRIMARY_BUS, mca_dev); 333 mca_register_device(MCA_PRIMARY_BUS, mca_dev);
328 334
329 /* Put motherboard into scsi setup mode, read integrated scsi 335 /*
336 * Put motherboard into scsi setup mode, read integrated scsi
330 * POS registers, and turn motherboard setup off. 337 * POS registers, and turn motherboard setup off.
331 * 338 *
332 * It seems there are two possible SCSI registers. Martin says that 339 * It seems there are two possible SCSI registers. Martin says that
@@ -338,18 +345,18 @@ static int __init mca_init(void)
338 * machine. 345 * machine.
339 */ 346 */
340 347
341 for(i = 0; (which_scsi = mca_builtin_scsi_ports[i]) != 0; i++) { 348 for (i = 0; (which_scsi = mca_builtin_scsi_ports[i]) != 0; i++) {
342 outb_p(which_scsi, MCA_MOTHERBOARD_SETUP_REG); 349 outb_p(which_scsi, MCA_MOTHERBOARD_SETUP_REG);
343 if(mca_read_and_store_pos(pos)) 350 if (mca_read_and_store_pos(pos))
344 break; 351 break;
345 } 352 }
346 if(which_scsi) { 353 if (which_scsi) {
347 /* found a scsi card */ 354 /* found a scsi card */
348 mca_dev = kzalloc(sizeof(struct mca_device), GFP_ATOMIC); 355 mca_dev = kzalloc(sizeof(struct mca_device), GFP_ATOMIC);
349 if(unlikely(!mca_dev)) 356 if (unlikely(!mca_dev))
350 goto out_unlock_nomem; 357 goto out_unlock_nomem;
351 358
352 for(j = 0; j < 8; j++) 359 for (j = 0; j < 8; j++)
353 mca_dev->pos[j] = pos[j]; 360 mca_dev->pos[j] = pos[j];
354 361
355 mca_configure_adapter_status(mca_dev); 362 mca_configure_adapter_status(mca_dev);
@@ -364,21 +371,22 @@ static int __init mca_init(void)
364 371
365 outb_p(0xff, MCA_MOTHERBOARD_SETUP_REG); 372 outb_p(0xff, MCA_MOTHERBOARD_SETUP_REG);
366 373
367 /* Now loop over MCA slots: put each adapter into setup mode, and 374 /*
375 * Now loop over MCA slots: put each adapter into setup mode, and
368 * read its POS registers. Then put adapter setup off. 376 * read its POS registers. Then put adapter setup off.
369 */ 377 */
370 378
371 for(i=0; i<MCA_MAX_SLOT_NR; i++) { 379 for (i = 0; i < MCA_MAX_SLOT_NR; i++) {
372 outb_p(0x8|(i&0xf), MCA_ADAPTER_SETUP_REG); 380 outb_p(0x8|(i&0xf), MCA_ADAPTER_SETUP_REG);
373 if(!mca_read_and_store_pos(pos)) 381 if (!mca_read_and_store_pos(pos))
374 continue; 382 continue;
375 383
376 mca_dev = kzalloc(sizeof(struct mca_device), GFP_ATOMIC); 384 mca_dev = kzalloc(sizeof(struct mca_device), GFP_ATOMIC);
377 if(unlikely(!mca_dev)) 385 if (unlikely(!mca_dev))
378 goto out_unlock_nomem; 386 goto out_unlock_nomem;
379 387
380 for(j=0; j<8; j++) 388 for (j = 0; j < 8; j++)
381 mca_dev->pos[j]=pos[j]; 389 mca_dev->pos[j] = pos[j];
382 390
383 mca_dev->driver_loaded = 0; 391 mca_dev->driver_loaded = 0;
384 mca_dev->slot = i; 392 mca_dev->slot = i;
@@ -414,20 +422,20 @@ mca_handle_nmi_device(struct mca_device *mca_dev, int check_flag)
414{ 422{
415 int slot = mca_dev->slot; 423 int slot = mca_dev->slot;
416 424
417 if(slot == MCA_INTEGSCSI) { 425 if (slot == MCA_INTEGSCSI) {
418 printk(KERN_CRIT "NMI: caused by MCA integrated SCSI adapter (%s)\n", 426 printk(KERN_CRIT "NMI: caused by MCA integrated SCSI adapter (%s)\n",
419 mca_dev->name); 427 mca_dev->name);
420 } else if(slot == MCA_INTEGVIDEO) { 428 } else if (slot == MCA_INTEGVIDEO) {
421 printk(KERN_CRIT "NMI: caused by MCA integrated video adapter (%s)\n", 429 printk(KERN_CRIT "NMI: caused by MCA integrated video adapter (%s)\n",
422 mca_dev->name); 430 mca_dev->name);
423 } else if(slot == MCA_MOTHERBOARD) { 431 } else if (slot == MCA_MOTHERBOARD) {
424 printk(KERN_CRIT "NMI: caused by motherboard (%s)\n", 432 printk(KERN_CRIT "NMI: caused by motherboard (%s)\n",
425 mca_dev->name); 433 mca_dev->name);
426 } 434 }
427 435
428 /* More info available in POS 6 and 7? */ 436 /* More info available in POS 6 and 7? */
429 437
430 if(check_flag) { 438 if (check_flag) {
431 unsigned char pos6, pos7; 439 unsigned char pos6, pos7;
432 440
433 pos6 = mca_device_read_pos(mca_dev, 6); 441 pos6 = mca_device_read_pos(mca_dev, 6);
@@ -447,8 +455,9 @@ static int __kprobes mca_handle_nmi_callback(struct device *dev, void *data)
447 455
448 pos5 = mca_device_read_pos(mca_dev, 5); 456 pos5 = mca_device_read_pos(mca_dev, 5);
449 457
450 if(!(pos5 & 0x80)) { 458 if (!(pos5 & 0x80)) {
451 /* Bit 7 of POS 5 is reset when this adapter has a hardware 459 /*
460 * Bit 7 of POS 5 is reset when this adapter has a hardware
452 * error. Bit 7 it reset if there's error information 461 * error. Bit 7 it reset if there's error information
453 * available in POS 6 and 7. 462 * available in POS 6 and 7.
454 */ 463 */
@@ -460,7 +469,8 @@ static int __kprobes mca_handle_nmi_callback(struct device *dev, void *data)
460 469
461void __kprobes mca_handle_nmi(void) 470void __kprobes mca_handle_nmi(void)
462{ 471{
463 /* First try - scan the various adapters and see if a specific 472 /*
473 * First try - scan the various adapters and see if a specific
464 * adapter was responsible for the error. 474 * adapter was responsible for the error.
465 */ 475 */
466 bus_for_each_dev(&mca_bus_type, NULL, NULL, mca_handle_nmi_callback); 476 bus_for_each_dev(&mca_bus_type, NULL, NULL, mca_handle_nmi_callback);