1 // SPDX-License-Identifier: GPL-2.0-only
9  * Kylene Hall <kjhall@us.ibm.com>
11  * Maintained by: <tpmdd-devel@lists.sourceforge.net>
72 	struct tpm_nsc_priv *priv = dev_get_drvdata(&chip->dev);  in wait_for_stat()
76 	*data = inb(priv->base + NSC_STATUS);  in wait_for_stat()
84 		*data = inb(priv->base + 1);  in wait_for_stat()
90 	return -EBUSY;  in wait_for_stat()
95 	struct tpm_nsc_priv *priv = dev_get_drvdata(&chip->dev);  in nsc_wait_for_ready()
100 	status = inb(priv->base + NSC_STATUS);  in nsc_wait_for_ready()
102 		status = inb(priv->base + NSC_DATA);  in nsc_wait_for_ready()
110 		status = inb(priv->base + NSC_STATUS);  in nsc_wait_for_ready()
112 			status = inb(priv->base + NSC_DATA);  in nsc_wait_for_ready()
118 	dev_info(&chip->dev, "wait for ready failed\n");  in nsc_wait_for_ready()
119 	return -EBUSY;  in nsc_wait_for_ready()
125 	struct tpm_nsc_priv *priv = dev_get_drvdata(&chip->dev);  in tpm_nsc_recv()
132 		return -EIO;  in tpm_nsc_recv()
135 		dev_err(&chip->dev, "F0 timeout\n");  in tpm_nsc_recv()
136 		return -EIO;  in tpm_nsc_recv()
139 	data = inb(priv->base + NSC_DATA);  in tpm_nsc_recv()
141 		dev_err(&chip->dev, "not in normal mode (0x%x)\n",  in tpm_nsc_recv()
143 		return -EIO;  in tpm_nsc_recv()
150 			dev_err(&chip->dev,  in tpm_nsc_recv()
152 			return -EIO;  in tpm_nsc_recv()
156 		*p = inb(priv->base + NSC_DATA);  in tpm_nsc_recv()
161 		dev_err(&chip->dev, "F0 not set\n");  in tpm_nsc_recv()
162 		return -EIO;  in tpm_nsc_recv()
165 	data = inb(priv->base + NSC_DATA);  in tpm_nsc_recv()
167 		dev_err(&chip->dev,  in tpm_nsc_recv()
169 		return -EIO;  in tpm_nsc_recv()
176 		return -EIO;  in tpm_nsc_recv()
183 	struct tpm_nsc_priv *priv = dev_get_drvdata(&chip->dev);  in tpm_nsc_send()
193 	outb(NSC_COMMAND_CANCEL, priv->base + NSC_COMMAND);  in tpm_nsc_send()
196 		return -EIO;  in tpm_nsc_send()
199 		dev_err(&chip->dev, "IBF timeout\n");  in tpm_nsc_send()
200 		return -EIO;  in tpm_nsc_send()
203 	outb(NSC_COMMAND_NORMAL, priv->base + NSC_COMMAND);  in tpm_nsc_send()
205 		dev_err(&chip->dev, "IBR timeout\n");  in tpm_nsc_send()
206 		return -EIO;  in tpm_nsc_send()
211 			dev_err(&chip->dev,  in tpm_nsc_send()
213 			return -EIO;  in tpm_nsc_send()
215 		outb(buf[i], priv->base + NSC_DATA);  in tpm_nsc_send()
219 		dev_err(&chip->dev, "IBF timeout\n");  in tpm_nsc_send()
220 		return -EIO;  in tpm_nsc_send()
222 	outb(NSC_COMMAND_EOC, priv->base + NSC_COMMAND);  in tpm_nsc_send()
229 	struct tpm_nsc_priv *priv = dev_get_drvdata(&chip->dev);  in tpm_nsc_cancel()
231 	outb(NSC_COMMAND_CANCEL, priv->base + NSC_COMMAND);  in tpm_nsc_cancel()
236 	struct tpm_nsc_priv *priv = dev_get_drvdata(&chip->dev);  in tpm_nsc_status()
238 	return inb(priv->base + NSC_STATUS);  in tpm_nsc_status()
261 	struct tpm_nsc_priv *priv = dev_get_drvdata(&chip->dev);  in tpm_nsc_remove()
264 	release_region(priv->base, 2);  in tpm_nsc_remove()
302 			return -ENODEV;  in init_nsc()
313 	/* enable the DPM module */  in init_nsc()
316 	pdev = platform_device_alloc("tpm_nscl0", -1);  in init_nsc()
318 		rc = -ENOMEM;  in init_nsc()
322 	pdev->num_resources = 0;  in init_nsc()
323 	pdev->dev.driver = &nsc_drv.driver;  in init_nsc()
324 	pdev->dev.release = tpm_nsc_remove;  in init_nsc()
329 	priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);  in init_nsc()
331 		rc = -ENOMEM;  in init_nsc()
335 	priv->base = base;  in init_nsc()
338 		rc = -EBUSY;  in init_nsc()
342 	chip = tpmm_chip_alloc(&pdev->dev, &tpm_nsc);  in init_nsc()
344 		rc = -ENODEV;  in init_nsc()
348 	dev_set_drvdata(&chip->dev, priv);  in init_nsc()
354 	dev_dbg(&pdev->dev, "NSC TPM detected\n");  in init_nsc()
355 	dev_dbg(&pdev->dev,  in init_nsc()
359 	dev_dbg(&pdev->dev,  in init_nsc()
363 	dev_dbg(&pdev->dev, "NSC IO Base0 0x%x\n",  in init_nsc()
365 	dev_dbg(&pdev->dev, "NSC IO Base1 0x%x\n",  in init_nsc()
367 	dev_dbg(&pdev->dev, "NSC Interrupt number and wakeup 0x%x\n",  in init_nsc()
369 	dev_dbg(&pdev->dev, "NSC IRQ type select 0x%x\n",  in init_nsc()
371 	dev_dbg(&pdev->dev,  in init_nsc()
374 	dev_dbg(&pdev->dev,  in init_nsc()
383 	dev_info(&pdev->dev,  in init_nsc()
403 		tpm_nsc_remove(&pdev->dev);  in cleanup_nsc()