1 // SPDX-License-Identifier: GPL-2.0-or-later
29  * convert_ifc_address - convert the base address
39  * fsl_ifc_find - find IFC bank
42  * This function walks IFC banks comparing "Base address" field of the CSPR
51 	if (!fsl_ifc_ctrl_dev || !fsl_ifc_ctrl_dev->gregs)  in fsl_ifc_find()
52 		return -ENODEV;  in fsl_ifc_find()
54 	for (i = 0; i < fsl_ifc_ctrl_dev->banks; i++) {  in fsl_ifc_find()
55 		u32 cspr = ifc_in32(&fsl_ifc_ctrl_dev->gregs->cspr_cs[i].cspr);  in fsl_ifc_find()
62 	return -ENOENT;  in fsl_ifc_find()
68 	struct fsl_ifc_global __iomem *ifc = ctrl->gregs;  in fsl_ifc_ctrl_init()  local
73 	if (ifc_in32(&ifc->cm_evter_stat) & IFC_CM_EVTER_STAT_CSER)  in fsl_ifc_ctrl_init()
74 		ifc_out32(IFC_CM_EVTER_STAT_CSER, &ifc->cm_evter_stat);  in fsl_ifc_ctrl_init()
77 	ifc_out32(IFC_CM_EVTER_EN_CSEREN, &ifc->cm_evter_en);  in fsl_ifc_ctrl_init()
80 	ifc_out32(IFC_CM_EVTER_INTR_EN_CSERIREN, &ifc->cm_evter_intr_en);  in fsl_ifc_ctrl_init()
81 	ifc_out32(0x0, &ifc->cm_erattr0);  in fsl_ifc_ctrl_init()
82 	ifc_out32(0x0, &ifc->cm_erattr1);  in fsl_ifc_ctrl_init()
89 	struct fsl_ifc_ctrl *ctrl = dev_get_drvdata(&dev->dev);  in fsl_ifc_ctrl_remove()
91 	free_irq(ctrl->nand_irq, ctrl);  in fsl_ifc_ctrl_remove()
92 	free_irq(ctrl->irq, ctrl);  in fsl_ifc_ctrl_remove()
94 	irq_dispose_mapping(ctrl->nand_irq);  in fsl_ifc_ctrl_remove()
95 	irq_dispose_mapping(ctrl->irq);  in fsl_ifc_ctrl_remove()
97 	iounmap(ctrl->gregs);  in fsl_ifc_ctrl_remove()
99 	dev_set_drvdata(&dev->dev, NULL);  in fsl_ifc_ctrl_remove()
105  * NAND events are split between an operational interrupt which only
107  * including non-NAND errors.  Whichever interrupt gets to it first
114 	struct fsl_ifc_runtime __iomem *ifc = ctrl->rregs;  in check_nand_stat()  local
120 	stat = ifc_in32(&ifc->ifc_nand.nand_evter_stat);  in check_nand_stat()
122 		ifc_out32(stat, &ifc->ifc_nand.nand_evter_stat);  in check_nand_stat()
123 		ctrl->nand_stat = stat;  in check_nand_stat()
124 		wake_up(&ctrl->nand_wait);  in check_nand_stat()
143  * NOTE: This interrupt is used to report ifc events of various kinds,
149 	struct fsl_ifc_global __iomem *ifc = ctrl->gregs;  in fsl_ifc_ctrl_irq()  local
154 	cs_err = ifc_in32(&ifc->cm_evter_stat);  in fsl_ifc_ctrl_irq()
156 		dev_err(ctrl->dev, "transaction sent to IFC is not mapped to any memory bank 0x%08X\n",  in fsl_ifc_ctrl_irq()
159 		ifc_out32(IFC_CM_EVTER_STAT_CSER, &ifc->cm_evter_stat);  in fsl_ifc_ctrl_irq()
162 		status = ifc_in32(&ifc->cm_erattr0);  in fsl_ifc_ctrl_irq()
163 		err_addr = ifc_in32(&ifc->cm_erattr1);  in fsl_ifc_ctrl_irq()
166 			dev_err(ctrl->dev, "Read transaction error CM_ERATTR0 0x%08X\n",  in fsl_ifc_ctrl_irq()
169 			dev_err(ctrl->dev, "Write transaction error CM_ERATTR0 0x%08X\n",  in fsl_ifc_ctrl_irq()
174 		dev_err(ctrl->dev, "AXI ID of the error transaction 0x%08X\n",  in fsl_ifc_ctrl_irq()
179 		dev_err(ctrl->dev, "SRC ID of the error transaction 0x%08X\n",  in fsl_ifc_ctrl_irq()
182 		dev_err(ctrl->dev, "Transaction Address corresponding to error ERADDR 0x%08X\n",  in fsl_ifc_ctrl_irq()
200  * resources for the NAND banks themselves are allocated
209 	dev_info(&dev->dev, "Freescale Integrated Flash Controller\n");  in fsl_ifc_ctrl_probe()
211 	fsl_ifc_ctrl_dev = devm_kzalloc(&dev->dev, sizeof(*fsl_ifc_ctrl_dev),  in fsl_ifc_ctrl_probe()
214 		return -ENOMEM;  in fsl_ifc_ctrl_probe()
216 	dev_set_drvdata(&dev->dev, fsl_ifc_ctrl_dev);  in fsl_ifc_ctrl_probe()
218 	/* IOMAP the entire IFC region */  in fsl_ifc_ctrl_probe()
219 	fsl_ifc_ctrl_dev->gregs = of_iomap(dev->dev.of_node, 0);  in fsl_ifc_ctrl_probe()
220 	if (!fsl_ifc_ctrl_dev->gregs) {  in fsl_ifc_ctrl_probe()
221 		dev_err(&dev->dev, "failed to get memory region\n");  in fsl_ifc_ctrl_probe()
222 		return -ENODEV;  in fsl_ifc_ctrl_probe()
225 	if (of_property_read_bool(dev->dev.of_node, "little-endian")) {  in fsl_ifc_ctrl_probe()
226 		fsl_ifc_ctrl_dev->little_endian = true;  in fsl_ifc_ctrl_probe()
227 		dev_dbg(&dev->dev, "IFC REGISTERS are LITTLE endian\n");  in fsl_ifc_ctrl_probe()
229 		fsl_ifc_ctrl_dev->little_endian = false;  in fsl_ifc_ctrl_probe()
230 		dev_dbg(&dev->dev, "IFC REGISTERS are BIG endian\n");  in fsl_ifc_ctrl_probe()
233 	version = ifc_in32(&fsl_ifc_ctrl_dev->gregs->ifc_rev) &  in fsl_ifc_ctrl_probe()
237 	dev_info(&dev->dev, "IFC version %d.%d, %d banks\n",  in fsl_ifc_ctrl_probe()
240 	fsl_ifc_ctrl_dev->version = version;  in fsl_ifc_ctrl_probe()
241 	fsl_ifc_ctrl_dev->banks = banks;  in fsl_ifc_ctrl_probe()
243 	addr = fsl_ifc_ctrl_dev->gregs;  in fsl_ifc_ctrl_probe()
248 	fsl_ifc_ctrl_dev->rregs = addr;  in fsl_ifc_ctrl_probe()
251 	fsl_ifc_ctrl_dev->irq = irq_of_parse_and_map(dev->dev.of_node, 0);  in fsl_ifc_ctrl_probe()
252 	if (fsl_ifc_ctrl_dev->irq == 0) {  in fsl_ifc_ctrl_probe()
253 		dev_err(&dev->dev, "failed to get irq resource for IFC\n");  in fsl_ifc_ctrl_probe()
254 		ret = -ENODEV;  in fsl_ifc_ctrl_probe()
258 	/* get the nand machine irq */  in fsl_ifc_ctrl_probe()
259 	fsl_ifc_ctrl_dev->nand_irq =  in fsl_ifc_ctrl_probe()
260 			irq_of_parse_and_map(dev->dev.of_node, 1);  in fsl_ifc_ctrl_probe()
262 	fsl_ifc_ctrl_dev->dev = &dev->dev;  in fsl_ifc_ctrl_probe()
268 	init_waitqueue_head(&fsl_ifc_ctrl_dev->nand_wait);  in fsl_ifc_ctrl_probe()
270 	ret = request_irq(fsl_ifc_ctrl_dev->irq, fsl_ifc_ctrl_irq, IRQF_SHARED,  in fsl_ifc_ctrl_probe()
271 			  "fsl-ifc", fsl_ifc_ctrl_dev);  in fsl_ifc_ctrl_probe()
273 		dev_err(&dev->dev, "failed to install irq (%d)\n",  in fsl_ifc_ctrl_probe()
274 			fsl_ifc_ctrl_dev->irq);  in fsl_ifc_ctrl_probe()
278 	if (fsl_ifc_ctrl_dev->nand_irq) {  in fsl_ifc_ctrl_probe()
279 		ret = request_irq(fsl_ifc_ctrl_dev->nand_irq, fsl_ifc_nand_irq,  in fsl_ifc_ctrl_probe()
280 				0, "fsl-ifc-nand", fsl_ifc_ctrl_dev);  in fsl_ifc_ctrl_probe()
282 			dev_err(&dev->dev, "failed to install irq (%d)\n",  in fsl_ifc_ctrl_probe()
283 				fsl_ifc_ctrl_dev->nand_irq);  in fsl_ifc_ctrl_probe()
291 	free_irq(fsl_ifc_ctrl_dev->irq, fsl_ifc_ctrl_dev);  in fsl_ifc_ctrl_probe()
293 	irq_dispose_mapping(fsl_ifc_ctrl_dev->nand_irq);  in fsl_ifc_ctrl_probe()
294 	irq_dispose_mapping(fsl_ifc_ctrl_dev->irq);  in fsl_ifc_ctrl_probe()
296 	iounmap(fsl_ifc_ctrl_dev->gregs);  in fsl_ifc_ctrl_probe()
302 		.compatible = "fsl,ifc",
309 		.name	= "fsl-ifc",