tpm_nsc.c (2fc2991175bf77395e6b15fe6b2304d3bf72da40) tpm_nsc.c (e2a8f7a129aff5173c238c8896f004e07a2a3abe)
1/*
2 * Copyright (C) 2004 IBM Corporation
3 *
4 * Authors:
5 * Leendert van Doorn <leendert@watson.ibm.com>
6 * Dave Safford <safford@watson.ibm.com>
7 * Reiner Sailer <sailer@watson.ibm.com>
8 * Kylene Hall <kjhall@us.ibm.com>

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282};
283
284static int __init init_nsc(void)
285{
286 int rc = 0;
287 int lo, hi;
288 int nscAddrBase = TPM_ADDR;
289
1/*
2 * Copyright (C) 2004 IBM Corporation
3 *
4 * Authors:
5 * Leendert van Doorn <leendert@watson.ibm.com>
6 * Dave Safford <safford@watson.ibm.com>
7 * Reiner Sailer <sailer@watson.ibm.com>
8 * Kylene Hall <kjhall@us.ibm.com>

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282};
283
284static int __init init_nsc(void)
285{
286 int rc = 0;
287 int lo, hi;
288 int nscAddrBase = TPM_ADDR;
289
290 driver_register(&nsc_drv);
291
290
292 /* select PM channel 1 */
293 tpm_write_index(nscAddrBase,NSC_LDN_INDEX, 0x12);
294
295 /* verify that it is a National part (SID) */
296 if (tpm_read_index(TPM_ADDR, NSC_SID_INDEX) != 0xEF) {
297 nscAddrBase = (tpm_read_index(TPM_SUPERIO_ADDR, 0x2C)<<8)|
298 (tpm_read_index(TPM_SUPERIO_ADDR, 0x2B)&0xFE);
299 if (tpm_read_index(nscAddrBase, NSC_SID_INDEX) != 0xF6)
300 return -ENODEV;
301 }
302
291 /* verify that it is a National part (SID) */
292 if (tpm_read_index(TPM_ADDR, NSC_SID_INDEX) != 0xEF) {
293 nscAddrBase = (tpm_read_index(TPM_SUPERIO_ADDR, 0x2C)<<8)|
294 (tpm_read_index(TPM_SUPERIO_ADDR, 0x2B)&0xFE);
295 if (tpm_read_index(nscAddrBase, NSC_SID_INDEX) != 0xF6)
296 return -ENODEV;
297 }
298
299 driver_register(&nsc_drv);
300
303 hi = tpm_read_index(nscAddrBase, TPM_NSC_BASE0_HI);
304 lo = tpm_read_index(nscAddrBase, TPM_NSC_BASE0_LO);
305 tpm_nsc.base = (hi<<8) | lo;
306
307 /* enable the DPM module */
308 tpm_write_index(nscAddrBase, NSC_LDC_INDEX, 0x01);
309
301 hi = tpm_read_index(nscAddrBase, TPM_NSC_BASE0_HI);
302 lo = tpm_read_index(nscAddrBase, TPM_NSC_BASE0_LO);
303 tpm_nsc.base = (hi<<8) | lo;
304
305 /* enable the DPM module */
306 tpm_write_index(nscAddrBase, NSC_LDC_INDEX, 0x01);
307
310 pdev = kmalloc(sizeof(struct platform_device), GFP_KERNEL);
311 if ( !pdev )
312 return -ENOMEM;
308 pdev = kzalloc(sizeof(struct platform_device), GFP_KERNEL);
309 if (!pdev) {
310 rc = -ENOMEM;
311 goto err_unreg_drv;
312 }
313
313
314 memset(pdev, 0, sizeof(struct platform_device));
315
316 pdev->name = "tpm_nscl0";
317 pdev->id = -1;
318 pdev->num_resources = 0;
319 pdev->dev.release = tpm_nsc_remove;
320 pdev->dev.driver = &nsc_drv;
321
314 pdev->name = "tpm_nscl0";
315 pdev->id = -1;
316 pdev->num_resources = 0;
317 pdev->dev.release = tpm_nsc_remove;
318 pdev->dev.driver = &nsc_drv;
319
322 if ((rc=platform_device_register(pdev)) < 0) {
323 kfree(pdev);
324 pdev = NULL;
325 return rc;
326 }
320 if ((rc = platform_device_register(pdev)) < 0)
321 goto err_free_dev;
327
328 if (request_region(tpm_nsc.base, 2, "tpm_nsc0") == NULL ) {
322
323 if (request_region(tpm_nsc.base, 2, "tpm_nsc0") == NULL ) {
329 platform_device_unregister(pdev);
330 kfree(pdev);
331 pdev = NULL;
332 return -EBUSY;
324 rc = -EBUSY;
325 goto err_unreg_dev;
333 }
334
326 }
327
335 if ((rc = tpm_register_hardware(&pdev->dev, &tpm_nsc)) < 0) {
336 release_region(tpm_nsc.base, 2);
337 platform_device_unregister(pdev);
338 kfree(pdev);
339 pdev = NULL;
340 return rc;
341 }
328 if ((rc = tpm_register_hardware(&pdev->dev, &tpm_nsc)) < 0)
329 goto err_rel_reg;
342
343 dev_dbg(&pdev->dev, "NSC TPM detected\n");
344 dev_dbg(&pdev->dev,
345 "NSC LDN 0x%x, SID 0x%x, SRID 0x%x\n",
346 tpm_read_index(nscAddrBase,0x07), tpm_read_index(nscAddrBase,0x20),
347 tpm_read_index(nscAddrBase,0x27));
348 dev_dbg(&pdev->dev,
349 "NSC SIOCF1 0x%x SIOCF5 0x%x SIOCF6 0x%x SIOCF8 0x%x\n",

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369 tpm_read_index(nscAddrBase,0xF6), tpm_read_index(nscAddrBase,0xF7),
370 tpm_read_index(nscAddrBase,0xF8), tpm_read_index(nscAddrBase,0xF9));
371
372 dev_info(&pdev->dev,
373 "NSC TPM revision %d\n",
374 tpm_read_index(nscAddrBase, 0x27) & 0x1F);
375
376 return 0;
330
331 dev_dbg(&pdev->dev, "NSC TPM detected\n");
332 dev_dbg(&pdev->dev,
333 "NSC LDN 0x%x, SID 0x%x, SRID 0x%x\n",
334 tpm_read_index(nscAddrBase,0x07), tpm_read_index(nscAddrBase,0x20),
335 tpm_read_index(nscAddrBase,0x27));
336 dev_dbg(&pdev->dev,
337 "NSC SIOCF1 0x%x SIOCF5 0x%x SIOCF6 0x%x SIOCF8 0x%x\n",

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357 tpm_read_index(nscAddrBase,0xF6), tpm_read_index(nscAddrBase,0xF7),
358 tpm_read_index(nscAddrBase,0xF8), tpm_read_index(nscAddrBase,0xF9));
359
360 dev_info(&pdev->dev,
361 "NSC TPM revision %d\n",
362 tpm_read_index(nscAddrBase, 0x27) & 0x1F);
363
364 return 0;
365
366err_rel_reg:
367 release_region(tpm_nsc.base, 2);
368err_unreg_dev:
369 platform_device_unregister(pdev);
370err_free_dev:
371 kfree(pdev);
372err_unreg_drv:
373 driver_unregister(&nsc_drv);
374 return rc;
377}
378
379static void __exit cleanup_nsc(void)
380{
381 if (pdev) {
382 tpm_nsc_remove(&pdev->dev);
383 platform_device_unregister(pdev);
384 kfree(pdev);

--- 13 unchanged lines hidden --- 		375}
376
377static void __exit cleanup_nsc(void)
378{
379 if (pdev) {
380 tpm_nsc_remove(&pdev->dev);
381 platform_device_unregister(pdev);
382 kfree(pdev);

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