// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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Copyright (C) 2004 - 2009 Ivo van Doorn <IvDoorn@gmail.com>
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<http://rt2x00.serialmonkey.com>
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*/
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/*
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Module: rt2x00pci
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Abstract: rt2x00 generic pci device routines.
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*/
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#include <linux/dma-mapping.h>
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/pci.h>
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#include <linux/slab.h>
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#include "rt2x00.h"
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#include "rt2x00pci.h"
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/*
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* PCI driver handlers.
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*/
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static void rt2x00pci_free_reg(struct rt2x00_dev *rt2x00dev)
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{
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kfree(rt2x00dev->rf);
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rt2x00dev->rf = NULL;
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kfree(rt2x00dev->eeprom);
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rt2x00dev->eeprom = NULL;
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if (rt2x00dev->csr.base) {
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iounmap(rt2x00dev->csr.base);
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rt2x00dev->csr.base = NULL;
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}
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}
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static int rt2x00pci_alloc_reg(struct rt2x00_dev *rt2x00dev)
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{
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struct pci_dev *pci_dev = to_pci_dev(rt2x00dev->dev);
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rt2x00dev->csr.base = pci_ioremap_bar(pci_dev, 0);
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if (!rt2x00dev->csr.base)
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goto exit;
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rt2x00dev->eeprom = kzalloc(rt2x00dev->ops->eeprom_size, GFP_KERNEL);
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if (!rt2x00dev->eeprom)
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goto exit;
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rt2x00dev->rf = kzalloc(rt2x00dev->ops->rf_size, GFP_KERNEL);
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if (!rt2x00dev->rf)
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goto exit;
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return 0;
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exit:
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rt2x00_probe_err("Failed to allocate registers\n");
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rt2x00pci_free_reg(rt2x00dev);
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return -ENOMEM;
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}
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int rt2x00pci_probe(struct pci_dev *pci_dev, const struct rt2x00_ops *ops)
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{
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struct ieee80211_hw *hw;
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struct rt2x00_dev *rt2x00dev;
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int retval;
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u16 chip;
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retval = pci_enable_device(pci_dev);
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if (retval) {
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rt2x00_probe_err("Enable device failed\n");
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return retval;
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}
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retval = pci_request_regions(pci_dev, pci_name(pci_dev));
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if (retval) {
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rt2x00_probe_err("PCI request regions failed\n");
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goto exit_disable_device;
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}
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pci_set_master(pci_dev);
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if (pci_set_mwi(pci_dev))
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rt2x00_probe_err("MWI not available\n");
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if (dma_set_mask(&pci_dev->dev, DMA_BIT_MASK(32))) {
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rt2x00_probe_err("PCI DMA not supported\n");
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retval = -EIO;
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goto exit_release_regions;
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}
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hw = ieee80211_alloc_hw(sizeof(struct rt2x00_dev), ops->hw);
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if (!hw) {
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rt2x00_probe_err("Failed to allocate hardware\n");
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retval = -ENOMEM;
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goto exit_release_regions;
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}
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pci_set_drvdata(pci_dev, hw);
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rt2x00dev = hw->priv;
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rt2x00dev->dev = &pci_dev->dev;
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rt2x00dev->ops = ops;
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rt2x00dev->hw = hw;
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rt2x00dev->irq = pci_dev->irq;
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rt2x00dev->name = ops->name;
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if (pci_is_pcie(pci_dev))
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rt2x00_set_chip_intf(rt2x00dev, RT2X00_CHIP_INTF_PCIE);
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else
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rt2x00_set_chip_intf(rt2x00dev, RT2X00_CHIP_INTF_PCI);
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retval = rt2x00pci_alloc_reg(rt2x00dev);
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if (retval)
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goto exit_free_device;
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/*
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* Because rt3290 chip use different efuse offset to read efuse data.
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* So before read efuse it need to indicate it is the
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* rt3290 or not.
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*/
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pci_read_config_word(pci_dev, PCI_DEVICE_ID, &chip);
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rt2x00dev->chip.rt = chip;
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retval = rt2x00lib_probe_dev(rt2x00dev);
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if (retval)
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goto exit_free_reg;
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return 0;
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exit_free_reg:
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rt2x00pci_free_reg(rt2x00dev);
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exit_free_device:
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ieee80211_free_hw(hw);
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exit_release_regions:
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pci_clear_mwi(pci_dev);
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pci_release_regions(pci_dev);
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exit_disable_device:
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pci_disable_device(pci_dev);
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return retval;
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}
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EXPORT_SYMBOL_GPL(rt2x00pci_probe);
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void rt2x00pci_remove(struct pci_dev *pci_dev)
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{
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struct ieee80211_hw *hw = pci_get_drvdata(pci_dev);
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struct rt2x00_dev *rt2x00dev = hw->priv;
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/*
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* Free all allocated data.
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*/
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rt2x00lib_remove_dev(rt2x00dev);
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rt2x00pci_free_reg(rt2x00dev);
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ieee80211_free_hw(hw);
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/*
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* Free the PCI device data.
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*/
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pci_clear_mwi(pci_dev);
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pci_disable_device(pci_dev);
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pci_release_regions(pci_dev);
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}
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EXPORT_SYMBOL_GPL(rt2x00pci_remove);
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static int __maybe_unused rt2x00pci_suspend(struct device *dev)
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{
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struct ieee80211_hw *hw = dev_get_drvdata(dev);
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struct rt2x00_dev *rt2x00dev = hw->priv;
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return rt2x00lib_suspend(rt2x00dev);
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}
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static int __maybe_unused rt2x00pci_resume(struct device *dev)
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{
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struct ieee80211_hw *hw = dev_get_drvdata(dev);
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struct rt2x00_dev *rt2x00dev = hw->priv;
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return rt2x00lib_resume(rt2x00dev);
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}
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SIMPLE_DEV_PM_OPS(rt2x00pci_pm_ops, rt2x00pci_suspend, rt2x00pci_resume);
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EXPORT_SYMBOL_GPL(rt2x00pci_pm_ops);
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/*
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* rt2x00pci module information.
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*/
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MODULE_AUTHOR(DRV_PROJECT);
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MODULE_VERSION(DRV_VERSION);
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MODULE_DESCRIPTION("rt2x00 pci library");
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MODULE_LICENSE("GPL");
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