1f1bf52e8SMasahiro Yamada // SPDX-License-Identifier: GPL-2.0
293db446aSBoris Brezillon /*
393db446aSBoris Brezillon * NAND Flash Controller Device Driver
493db446aSBoris Brezillon * Copyright © 2009-2010, Intel Corporation and its suppliers.
593db446aSBoris Brezillon */
693db446aSBoris Brezillon
793db446aSBoris Brezillon #include <linux/errno.h>
893db446aSBoris Brezillon #include <linux/io.h>
993db446aSBoris Brezillon #include <linux/kernel.h>
1093db446aSBoris Brezillon #include <linux/module.h>
1193db446aSBoris Brezillon #include <linux/pci.h>
1293db446aSBoris Brezillon
1393db446aSBoris Brezillon #include "denali.h"
1493db446aSBoris Brezillon
1593db446aSBoris Brezillon #define DENALI_NAND_NAME "denali-nand-pci"
1693db446aSBoris Brezillon
1793db446aSBoris Brezillon #define INTEL_CE4100 1
1893db446aSBoris Brezillon #define INTEL_MRST 2
1993db446aSBoris Brezillon
2093db446aSBoris Brezillon /* List of platforms this NAND controller has be integrated into */
2193db446aSBoris Brezillon static const struct pci_device_id denali_pci_ids[] = {
2293db446aSBoris Brezillon { PCI_VDEVICE(INTEL, 0x0701), INTEL_CE4100 },
2393db446aSBoris Brezillon { PCI_VDEVICE(INTEL, 0x0809), INTEL_MRST },
2493db446aSBoris Brezillon { /* end: all zeroes */ }
2593db446aSBoris Brezillon };
2693db446aSBoris Brezillon MODULE_DEVICE_TABLE(pci, denali_pci_ids);
2793db446aSBoris Brezillon
2893db446aSBoris Brezillon NAND_ECC_CAPS_SINGLE(denali_pci_ecc_caps, denali_calc_ecc_bytes, 512, 8, 15);
2993db446aSBoris Brezillon
denali_pci_probe(struct pci_dev * dev,const struct pci_device_id * id)3093db446aSBoris Brezillon static int denali_pci_probe(struct pci_dev *dev, const struct pci_device_id *id)
3193db446aSBoris Brezillon {
3293db446aSBoris Brezillon resource_size_t csr_base, mem_base;
3393db446aSBoris Brezillon unsigned long csr_len, mem_len;
34d8e8fd0eSMasahiro Yamada struct denali_controller *denali;
35d8e8fd0eSMasahiro Yamada struct denali_chip *dchip;
36d8e8fd0eSMasahiro Yamada int nsels, ret, i;
3793db446aSBoris Brezillon
3893db446aSBoris Brezillon denali = devm_kzalloc(&dev->dev, sizeof(*denali), GFP_KERNEL);
3993db446aSBoris Brezillon if (!denali)
4093db446aSBoris Brezillon return -ENOMEM;
4193db446aSBoris Brezillon
4293db446aSBoris Brezillon ret = pcim_enable_device(dev);
4393db446aSBoris Brezillon if (ret) {
4493db446aSBoris Brezillon dev_err(&dev->dev, "Spectra: pci_enable_device failed.\n");
4593db446aSBoris Brezillon return ret;
4693db446aSBoris Brezillon }
4793db446aSBoris Brezillon
4893db446aSBoris Brezillon if (id->driver_data == INTEL_CE4100) {
4993db446aSBoris Brezillon mem_base = pci_resource_start(dev, 0);
5093db446aSBoris Brezillon mem_len = pci_resource_len(dev, 1);
5193db446aSBoris Brezillon csr_base = pci_resource_start(dev, 1);
5293db446aSBoris Brezillon csr_len = pci_resource_len(dev, 1);
5393db446aSBoris Brezillon } else {
5493db446aSBoris Brezillon csr_base = pci_resource_start(dev, 0);
5593db446aSBoris Brezillon csr_len = pci_resource_len(dev, 0);
5693db446aSBoris Brezillon mem_base = pci_resource_start(dev, 1);
5793db446aSBoris Brezillon mem_len = pci_resource_len(dev, 1);
5893db446aSBoris Brezillon if (!mem_len) {
5993db446aSBoris Brezillon mem_base = csr_base + csr_len;
6093db446aSBoris Brezillon mem_len = csr_len;
6193db446aSBoris Brezillon }
6293db446aSBoris Brezillon }
6393db446aSBoris Brezillon
6493db446aSBoris Brezillon pci_set_master(dev);
6593db446aSBoris Brezillon denali->dev = &dev->dev;
6693db446aSBoris Brezillon denali->irq = dev->irq;
6793db446aSBoris Brezillon denali->ecc_caps = &denali_pci_ecc_caps;
681dfac31aSMasahiro Yamada denali->clk_rate = 50000000; /* 50 MHz */
6993db446aSBoris Brezillon denali->clk_x_rate = 200000000; /* 200 MHz */
7093db446aSBoris Brezillon
7193db446aSBoris Brezillon ret = pci_request_regions(dev, DENALI_NAND_NAME);
7293db446aSBoris Brezillon if (ret) {
7393db446aSBoris Brezillon dev_err(&dev->dev, "Spectra: Unable to request memory regions\n");
7493db446aSBoris Brezillon return ret;
7593db446aSBoris Brezillon }
7693db446aSBoris Brezillon
773830dbdfSZheyu Ma denali->reg = devm_ioremap(denali->dev, csr_base, csr_len);
7893db446aSBoris Brezillon if (!denali->reg) {
7993db446aSBoris Brezillon dev_err(&dev->dev, "Spectra: Unable to remap memory region\n");
8093db446aSBoris Brezillon return -ENOMEM;
8193db446aSBoris Brezillon }
8293db446aSBoris Brezillon
833830dbdfSZheyu Ma denali->host = devm_ioremap(denali->dev, mem_base, mem_len);
8493db446aSBoris Brezillon if (!denali->host) {
854bdc0d67SChristoph Hellwig dev_err(&dev->dev, "Spectra: ioremap failed!");
863830dbdfSZheyu Ma return -ENOMEM;
8793db446aSBoris Brezillon }
8893db446aSBoris Brezillon
8993db446aSBoris Brezillon ret = denali_init(denali);
9093db446aSBoris Brezillon if (ret)
913830dbdfSZheyu Ma return ret;
9293db446aSBoris Brezillon
93d8e8fd0eSMasahiro Yamada nsels = denali->nbanks;
94d8e8fd0eSMasahiro Yamada
95d8e8fd0eSMasahiro Yamada dchip = devm_kzalloc(denali->dev, struct_size(dchip, sels, nsels),
96d8e8fd0eSMasahiro Yamada GFP_KERNEL);
97d8e8fd0eSMasahiro Yamada if (!dchip) {
98d8e8fd0eSMasahiro Yamada ret = -ENOMEM;
99d8e8fd0eSMasahiro Yamada goto out_remove_denali;
100d8e8fd0eSMasahiro Yamada }
101d8e8fd0eSMasahiro Yamada
102b5156335SMiquel Raynal dchip->chip.base.ecc.user_conf.flags |= NAND_ECC_MAXIMIZE_STRENGTH;
103d8e8fd0eSMasahiro Yamada
104d8e8fd0eSMasahiro Yamada dchip->nsels = nsels;
105d8e8fd0eSMasahiro Yamada
106d8e8fd0eSMasahiro Yamada for (i = 0; i < nsels; i++)
107d8e8fd0eSMasahiro Yamada dchip->sels[i].bank = i;
108d8e8fd0eSMasahiro Yamada
109d8e8fd0eSMasahiro Yamada ret = denali_chip_init(denali, dchip);
110d8e8fd0eSMasahiro Yamada if (ret)
111d8e8fd0eSMasahiro Yamada goto out_remove_denali;
112d8e8fd0eSMasahiro Yamada
11393db446aSBoris Brezillon pci_set_drvdata(dev, denali);
11493db446aSBoris Brezillon
11593db446aSBoris Brezillon return 0;
11693db446aSBoris Brezillon
117d8e8fd0eSMasahiro Yamada out_remove_denali:
118d8e8fd0eSMasahiro Yamada denali_remove(denali);
11993db446aSBoris Brezillon return ret;
12093db446aSBoris Brezillon }
12193db446aSBoris Brezillon
denali_pci_remove(struct pci_dev * dev)12293db446aSBoris Brezillon static void denali_pci_remove(struct pci_dev *dev)
12393db446aSBoris Brezillon {
124d8e8fd0eSMasahiro Yamada struct denali_controller *denali = pci_get_drvdata(dev);
12593db446aSBoris Brezillon
12693db446aSBoris Brezillon denali_remove(denali);
12793db446aSBoris Brezillon }
12893db446aSBoris Brezillon
12993db446aSBoris Brezillon static struct pci_driver denali_pci_driver = {
13093db446aSBoris Brezillon .name = DENALI_NAND_NAME,
13193db446aSBoris Brezillon .id_table = denali_pci_ids,
13293db446aSBoris Brezillon .probe = denali_pci_probe,
13393db446aSBoris Brezillon .remove = denali_pci_remove,
13493db446aSBoris Brezillon };
13593db446aSBoris Brezillon module_pci_driver(denali_pci_driver);
13693db446aSBoris Brezillon
13793db446aSBoris Brezillon MODULE_DESCRIPTION("PCI driver for Denali NAND controller");
13893db446aSBoris Brezillon MODULE_AUTHOR("Intel Corporation and its suppliers");
13993db446aSBoris Brezillon MODULE_LICENSE("GPL v2");
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