59 #define FWH_DEC_EN1_REG_NEW			0xd9 /* high byte of 16-bit register */
152                                 " positive value - skip if FWH space locked read-only\n"
153                                 " negative value - skip always");
169 	void __iomem *mem = (void __iomem *)rng->priv;  in intel_rng_data_present()
184 	void __iomem *mem = (void __iomem *)rng->priv;  in intel_rng_data_read()
193 	void __iomem *mem = (void __iomem *)rng->priv;  in intel_rng_init()
195 	int err = -EIO;  in intel_rng_init()
212 	void __iomem *mem = (void __iomem *)rng->priv;  in intel_rng_cleanup()
243 	u8 mfc, dvc;  in intel_rng_hw_init()  local
247 	if (!(intel_rng_hw->fwh_dec_en1_val & FWH_F8_EN_MASK))  in intel_rng_hw_init()
248 		pci_write_config_byte(intel_rng_hw->dev,  in intel_rng_hw_init()
249 		                      intel_rng_hw->fwh_dec_en1_off,  in intel_rng_hw_init()
250 		                      intel_rng_hw->fwh_dec_en1_val |  in intel_rng_hw_init()
252 	if (!(intel_rng_hw->bios_cntl_val & BIOS_CNTL_WRITE_ENABLE_MASK))  in intel_rng_hw_init()
253 		pci_write_config_byte(intel_rng_hw->dev,  in intel_rng_hw_init()
254 		                      intel_rng_hw->bios_cntl_off,  in intel_rng_hw_init()
255 		                      intel_rng_hw->bios_cntl_val |  in intel_rng_hw_init()
258 	writeb(INTEL_FWH_RESET_CMD, intel_rng_hw->mem);  in intel_rng_hw_init()
259 	writeb(INTEL_FWH_READ_ID_CMD, intel_rng_hw->mem);  in intel_rng_hw_init()
260 	mfc = readb(intel_rng_hw->mem + INTEL_FWH_MANUFACTURER_CODE_ADDRESS);  in intel_rng_hw_init()
261 	dvc = readb(intel_rng_hw->mem + INTEL_FWH_DEVICE_CODE_ADDRESS);  in intel_rng_hw_init()
262 	writeb(INTEL_FWH_RESET_CMD, intel_rng_hw->mem);  in intel_rng_hw_init()
264 	if (!(intel_rng_hw->bios_cntl_val &  in intel_rng_hw_init()
266 		pci_write_config_byte(intel_rng_hw->dev,  in intel_rng_hw_init()
267 				      intel_rng_hw->bios_cntl_off,  in intel_rng_hw_init()
268 				      intel_rng_hw->bios_cntl_val);  in intel_rng_hw_init()
269 	if (!(intel_rng_hw->fwh_dec_en1_val & FWH_F8_EN_MASK))  in intel_rng_hw_init()
270 		pci_write_config_byte(intel_rng_hw->dev,  in intel_rng_hw_init()
271 				      intel_rng_hw->fwh_dec_en1_off,  in intel_rng_hw_init()
272 				      intel_rng_hw->fwh_dec_en1_val);  in intel_rng_hw_init()
275 	    (dvc != INTEL_FWH_DEVICE_CODE_8M &&  in intel_rng_hw_init()
276 	     dvc != INTEL_FWH_DEVICE_CODE_4M)) {  in intel_rng_hw_init()
278 		return -ENODEV;  in intel_rng_hw_init()
287 	intel_rng_hw->bios_cntl_val = 0xff;  in intel_init_hw_struct()
288 	intel_rng_hw->fwh_dec_en1_val = 0xff;  in intel_init_hw_struct()
289 	intel_rng_hw->dev = dev;  in intel_init_hw_struct()
292 	if (dev->device < 0x2640) {  in intel_init_hw_struct()
293 		intel_rng_hw->fwh_dec_en1_off = FWH_DEC_EN1_REG_OLD;  in intel_init_hw_struct()
294 		intel_rng_hw->bios_cntl_off = BIOS_CNTL_REG_OLD;  in intel_init_hw_struct()
296 		intel_rng_hw->fwh_dec_en1_off = FWH_DEC_EN1_REG_NEW;  in intel_init_hw_struct()
297 		intel_rng_hw->bios_cntl_off = BIOS_CNTL_REG_NEW;  in intel_init_hw_struct()
300 	pci_read_config_byte(dev, intel_rng_hw->fwh_dec_en1_off,  in intel_init_hw_struct()
301 			     &intel_rng_hw->fwh_dec_en1_val);  in intel_init_hw_struct()
302 	pci_read_config_byte(dev, intel_rng_hw->bios_cntl_off,  in intel_init_hw_struct()
303 			     &intel_rng_hw->bios_cntl_val);  in intel_init_hw_struct()
305 	if ((intel_rng_hw->bios_cntl_val &  in intel_init_hw_struct()
309 PFX "Firmware space is locked read-only. If you can't or\n"  in intel_init_hw_struct()
315 			return -ENODEV;  in intel_init_hw_struct()
317 		return -EBUSY;  in intel_init_hw_struct()
320 	intel_rng_hw->mem = ioremap(INTEL_FWH_ADDR, INTEL_FWH_ADDR_LEN);  in intel_init_hw_struct()
321 	if (intel_rng_hw->mem == NULL)  in intel_init_hw_struct()
322 		return -EBUSY;  in intel_init_hw_struct()
330 	int err = -ENODEV;  in intel_rng_mod_init()
359 		if (err == -ENODEV)  in intel_rng_mod_init()
374 	iounmap(intel_rng_hw->mem);  in intel_rng_mod_init()
380 	err = -ENOMEM;  in intel_rng_mod_init()
387 	err = -ENODEV;  in intel_rng_mod_init()