124 static inline void ipc_command(struct intel_scu_ipc_dev *scu, u32 cmd)  in ipc_command()  argument
126 	if (scu->irq_mode) {  in ipc_command()
127 		reinit_completion(&scu->cmd_complete);  in ipc_command()
128 		writel(cmd | IPC_IOC, scu->ipc_base);  in ipc_command()
130 	writel(cmd, scu->ipc_base);  in ipc_command()
139 static inline void ipc_data_writel(struct intel_scu_ipc_dev *scu, u32 data, u32 offset)  in ipc_data_writel()  argument
141 	writel(data, scu->ipc_base + 0x80 + offset);  in ipc_data_writel()
151 static inline u8 ipc_read_status(struct intel_scu_ipc_dev *scu)  in ipc_read_status()  argument
153 	return __raw_readl(scu->ipc_base + 0x04);  in ipc_read_status()
157 static inline u8 ipc_data_readb(struct intel_scu_ipc_dev *scu, u32 offset)  in ipc_data_readb()  argument
159 	return readb(scu->ipc_base + IPC_READ_BUFFER + offset);  in ipc_data_readb()
163 static inline u32 ipc_data_readl(struct intel_scu_ipc_dev *scu, u32 offset)  in ipc_data_readl()  argument
165 	return readl(scu->ipc_base + IPC_READ_BUFFER + offset);  in ipc_data_readl()
169 static inline int busy_loop(struct intel_scu_ipc_dev *scu)  in busy_loop()  argument
171 	u32 status = ipc_read_status(scu);  in busy_loop()
177 		status = ipc_read_status(scu);  in busy_loop()
181 		dev_err(scu->dev, "IPC timed out");  in busy_loop()
192 static inline int ipc_wait_for_interrupt(struct intel_scu_ipc_dev *scu)  in ipc_wait_for_interrupt()  argument
196 	if (!wait_for_completion_timeout(&scu->cmd_complete, 3 * HZ)) {  in ipc_wait_for_interrupt()
197 		dev_err(scu->dev, "IPC timed out\n");  in ipc_wait_for_interrupt()
201 	status = ipc_read_status(scu);  in ipc_wait_for_interrupt()
208 static int intel_scu_ipc_check_status(struct intel_scu_ipc_dev *scu)  in intel_scu_ipc_check_status()  argument
210 	return scu->irq_mode ? ipc_wait_for_interrupt(scu) : busy_loop(scu);  in intel_scu_ipc_check_status()
216 	struct intel_scu_ipc_dev *scu = &ipcdev;  in pwr_reg_rdwr()  local
227 	if (scu->dev == NULL) {  in pwr_reg_rdwr()
239 			ipc_data_writel(scu, wbuf[nc], offset);  in pwr_reg_rdwr()
240 		ipc_command(scu, (count * 2) << 16 | id << 12 | 0 << 8 | op);  in pwr_reg_rdwr()
245 			ipc_data_writel(scu, wbuf[nc], offset);  in pwr_reg_rdwr()
246 		ipc_command(scu, (count * 3) << 16 | id << 12 | 0 << 8 | op);  in pwr_reg_rdwr()
250 		ipc_data_writel(scu, wbuf[0], 0); /* Write wbuff */  in pwr_reg_rdwr()
251 		ipc_command(scu, 4 << 16 | id << 12 | 0 << 8 | op);  in pwr_reg_rdwr()
254 	err = intel_scu_ipc_check_status(scu);  in pwr_reg_rdwr()
257 		memcpy_fromio(cbuf, scu->ipc_base + 0x90, 16);  in pwr_reg_rdwr()
259 			data[nc] = ipc_data_readb(scu, nc);  in pwr_reg_rdwr()
440 	struct intel_scu_ipc_dev *scu = &ipcdev;  in intel_scu_ipc_simple_command()  local
444 	if (scu->dev == NULL) {  in intel_scu_ipc_simple_command()
448 	ipc_command(scu, sub << 12 | cmd);  in intel_scu_ipc_simple_command()
449 	err = intel_scu_ipc_check_status(scu);  in intel_scu_ipc_simple_command()
470 	struct intel_scu_ipc_dev *scu = &ipcdev;  in intel_scu_ipc_command()  local
474 	if (scu->dev == NULL) {  in intel_scu_ipc_command()
480 		ipc_data_writel(scu, *in++, 4 * i);  in intel_scu_ipc_command()
482 	ipc_command(scu, (inlen << 16) | (sub << 12) | cmd);  in intel_scu_ipc_command()
483 	err = intel_scu_ipc_check_status(scu);  in intel_scu_ipc_command()
487 			*out++ = ipc_data_readl(scu, 4 * i);  in intel_scu_ipc_command()
513 	struct intel_scu_ipc_dev *scu = &ipcdev;  in intel_scu_ipc_i2c_cntrl()  local
517 	if (scu->dev == NULL) {  in intel_scu_ipc_i2c_cntrl()
523 		writel(addr, scu->i2c_base + IPC_I2C_CNTRL_ADDR);  in intel_scu_ipc_i2c_cntrl()
526 		*data = readl(scu->i2c_base + I2C_DATA_ADDR);  in intel_scu_ipc_i2c_cntrl()
528 		writel(*data, scu->i2c_base + I2C_DATA_ADDR);  in intel_scu_ipc_i2c_cntrl()
530 		writel(addr, scu->i2c_base + IPC_I2C_CNTRL_ADDR);  in intel_scu_ipc_i2c_cntrl()
532 		dev_err(scu->dev,  in intel_scu_ipc_i2c_cntrl()
552 	struct intel_scu_ipc_dev *scu = dev_id;  in ioc()  local
554 	if (scu->irq_mode)  in ioc()
555 		complete(&scu->cmd_complete);  in ioc()
572 	struct intel_scu_ipc_dev *scu = &ipcdev;  in ipc_probe()  local
579 	if (scu->dev)		/* We support only one SCU */  in ipc_probe()
584 	scu->dev = &pdev->dev;  in ipc_probe()
585 	scu->irq_mode = pdata->irq_mode;  in ipc_probe()
595 	init_completion(&scu->cmd_complete);  in ipc_probe()
598 			       scu);  in ipc_probe()
602 	scu->ipc_base = pcim_iomap_table(pdev)[0];  in ipc_probe()
604 	scu->i2c_base = ioremap_nocache(pdata->i2c_base, pdata->i2c_len);  in ipc_probe()
605 	if (!scu->i2c_base)  in ipc_probe()
610 	pci_set_drvdata(pdev, scu);  in ipc_probe()
626 	struct intel_scu_ipc_dev *scu = pci_get_drvdata(pdev);  in ipc_remove()  local
629 	scu->dev = NULL;  in ipc_remove()
632 	iounmap(scu->i2c_base);  in ipc_remove()