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1// SPDX-License-Identifier: GPL-2.02/*3 * NAND Flash Controller Device Driver4 * Copyright © 2009-2010, Intel Corporation and its suppliers.5 */6 7#include <linux/errno.h>8#include <linux/io.h>9#include <linux/kernel.h>10#include <linux/module.h>11#include <linux/pci.h>12 13#include "denali.h"14 15#define DENALI_NAND_NAME "denali-nand-pci"16 17#define INTEL_CE4100 118#define INTEL_MRST 219 20/* List of platforms this NAND controller has be integrated into */21static const struct pci_device_id denali_pci_ids[] = {22 { PCI_VDEVICE(INTEL, 0x0701), INTEL_CE4100 },23 { PCI_VDEVICE(INTEL, 0x0809), INTEL_MRST },24 { /* end: all zeroes */ }25};26MODULE_DEVICE_TABLE(pci, denali_pci_ids);27 28NAND_ECC_CAPS_SINGLE(denali_pci_ecc_caps, denali_calc_ecc_bytes, 512, 8, 15);29 30static int denali_pci_probe(struct pci_dev *dev, const struct pci_device_id *id)31{32 resource_size_t csr_base, mem_base;33 unsigned long csr_len, mem_len;34 struct denali_controller *denali;35 struct denali_chip *dchip;36 int nsels, ret, i;37 38 denali = devm_kzalloc(&dev->dev, sizeof(*denali), GFP_KERNEL);39 if (!denali)40 return -ENOMEM;41 42 ret = pcim_enable_device(dev);43 if (ret) {44 dev_err(&dev->dev, "Spectra: pci_enable_device failed.\n");45 return ret;46 }47 48 if (id->driver_data == INTEL_CE4100) {49 mem_base = pci_resource_start(dev, 0);50 mem_len = pci_resource_len(dev, 1);51 csr_base = pci_resource_start(dev, 1);52 csr_len = pci_resource_len(dev, 1);53 } else {54 csr_base = pci_resource_start(dev, 0);55 csr_len = pci_resource_len(dev, 0);56 mem_base = pci_resource_start(dev, 1);57 mem_len = pci_resource_len(dev, 1);58 if (!mem_len) {59 mem_base = csr_base + csr_len;60 mem_len = csr_len;61 }62 }63 64 pci_set_master(dev);65 denali->dev = &dev->dev;66 denali->irq = dev->irq;67 denali->ecc_caps = &denali_pci_ecc_caps;68 denali->clk_rate = 50000000; /* 50 MHz */69 denali->clk_x_rate = 200000000; /* 200 MHz */70 71 ret = pci_request_regions(dev, DENALI_NAND_NAME);72 if (ret) {73 dev_err(&dev->dev, "Spectra: Unable to request memory regions\n");74 return ret;75 }76 77 denali->reg = devm_ioremap(denali->dev, csr_base, csr_len);78 if (!denali->reg) {79 dev_err(&dev->dev, "Spectra: Unable to remap memory region\n");80 ret = -ENOMEM;81 goto regions_release;82 }83 84 denali->host = devm_ioremap(denali->dev, mem_base, mem_len);85 if (!denali->host) {86 dev_err(&dev->dev, "Spectra: ioremap failed!");87 ret = -ENOMEM;88 goto regions_release;89 }90 91 ret = denali_init(denali);92 if (ret)93 goto regions_release;94 95 nsels = denali->nbanks;96 97 dchip = devm_kzalloc(denali->dev, struct_size(dchip, sels, nsels),98 GFP_KERNEL);99 if (!dchip) {100 ret = -ENOMEM;101 goto out_remove_denali;102 }103 104 dchip->chip.base.ecc.user_conf.flags |= NAND_ECC_MAXIMIZE_STRENGTH;105 106 dchip->nsels = nsels;107 108 for (i = 0; i < nsels; i++)109 dchip->sels[i].bank = i;110 111 ret = denali_chip_init(denali, dchip);112 if (ret)113 goto out_remove_denali;114 115 pci_set_drvdata(dev, denali);116 117 return 0;118 119out_remove_denali:120 denali_remove(denali);121regions_release:122 pci_release_regions(dev);123 return ret;124}125 126static void denali_pci_remove(struct pci_dev *dev)127{128 struct denali_controller *denali = pci_get_drvdata(dev);129 130 pci_release_regions(dev);131 denali_remove(denali);132}133 134static struct pci_driver denali_pci_driver = {135 .name = DENALI_NAND_NAME,136 .id_table = denali_pci_ids,137 .probe = denali_pci_probe,138 .remove = denali_pci_remove,139};140module_pci_driver(denali_pci_driver);141 142MODULE_DESCRIPTION("PCI driver for Denali NAND controller");143MODULE_AUTHOR("Intel Corporation and its suppliers");144MODULE_LICENSE("GPL v2");145