+++ /dev/null
-/*
- Copyright (C) 2004 - 2009 Ivo van Doorn <IvDoorn@gmail.com>
- <http://rt2x00.serialmonkey.com>
-
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
- (at your option) any later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program; if not, see <http://www.gnu.org/licenses/>.
- */
-
-/*
- Module: rt2x00pci
- Abstract: rt2x00 generic pci device routines.
- */
-
-#include <linux/dma-mapping.h>
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/pci.h>
-#include <linux/slab.h>
-
-#include "rt2x00.h"
-#include "rt2x00pci.h"
-
-/*
- * PCI driver handlers.
- */
-static void rt2x00pci_free_reg(struct rt2x00_dev *rt2x00dev)
-{
- kfree(rt2x00dev->rf);
- rt2x00dev->rf = NULL;
-
- kfree(rt2x00dev->eeprom);
- rt2x00dev->eeprom = NULL;
-
- if (rt2x00dev->csr.base) {
- iounmap(rt2x00dev->csr.base);
- rt2x00dev->csr.base = NULL;
- }
-}
-
-static int rt2x00pci_alloc_reg(struct rt2x00_dev *rt2x00dev)
-{
- struct pci_dev *pci_dev = to_pci_dev(rt2x00dev->dev);
-
- rt2x00dev->csr.base = pci_ioremap_bar(pci_dev, 0);
- if (!rt2x00dev->csr.base)
- goto exit;
-
- rt2x00dev->eeprom = kzalloc(rt2x00dev->ops->eeprom_size, GFP_KERNEL);
- if (!rt2x00dev->eeprom)
- goto exit;
-
- rt2x00dev->rf = kzalloc(rt2x00dev->ops->rf_size, GFP_KERNEL);
- if (!rt2x00dev->rf)
- goto exit;
-
- return 0;
-
-exit:
- rt2x00_probe_err("Failed to allocate registers\n");
-
- rt2x00pci_free_reg(rt2x00dev);
-
- return -ENOMEM;
-}
-
-int rt2x00pci_probe(struct pci_dev *pci_dev, const struct rt2x00_ops *ops)
-{
- struct ieee80211_hw *hw;
- struct rt2x00_dev *rt2x00dev;
- int retval;
- u16 chip;
-
- retval = pci_enable_device(pci_dev);
- if (retval) {
- rt2x00_probe_err("Enable device failed\n");
- return retval;
- }
-
- retval = pci_request_regions(pci_dev, pci_name(pci_dev));
- if (retval) {
- rt2x00_probe_err("PCI request regions failed\n");
- goto exit_disable_device;
- }
-
- pci_set_master(pci_dev);
-
- if (pci_set_mwi(pci_dev))
- rt2x00_probe_err("MWI not available\n");
-
- if (dma_set_mask(&pci_dev->dev, DMA_BIT_MASK(32))) {
- rt2x00_probe_err("PCI DMA not supported\n");
- retval = -EIO;
- goto exit_release_regions;
- }
-
- hw = ieee80211_alloc_hw(sizeof(struct rt2x00_dev), ops->hw);
- if (!hw) {
- rt2x00_probe_err("Failed to allocate hardware\n");
- retval = -ENOMEM;
- goto exit_release_regions;
- }
-
- pci_set_drvdata(pci_dev, hw);
-
- rt2x00dev = hw->priv;
- rt2x00dev->dev = &pci_dev->dev;
- rt2x00dev->ops = ops;
- rt2x00dev->hw = hw;
- rt2x00dev->irq = pci_dev->irq;
- rt2x00dev->name = ops->name;
-
- if (pci_is_pcie(pci_dev))
- rt2x00_set_chip_intf(rt2x00dev, RT2X00_CHIP_INTF_PCIE);
- else
- rt2x00_set_chip_intf(rt2x00dev, RT2X00_CHIP_INTF_PCI);
-
- retval = rt2x00pci_alloc_reg(rt2x00dev);
- if (retval)
- goto exit_free_device;
-
- /*
- * Because rt3290 chip use different efuse offset to read efuse data.
- * So before read efuse it need to indicate it is the
- * rt3290 or not.
- */
- pci_read_config_word(pci_dev, PCI_DEVICE_ID, &chip);
- rt2x00dev->chip.rt = chip;
-
- retval = rt2x00lib_probe_dev(rt2x00dev);
- if (retval)
- goto exit_free_reg;
-
- return 0;
-
-exit_free_reg:
- rt2x00pci_free_reg(rt2x00dev);
-
-exit_free_device:
- ieee80211_free_hw(hw);
-
-exit_release_regions:
- pci_release_regions(pci_dev);
-
-exit_disable_device:
- pci_disable_device(pci_dev);
-
- return retval;
-}
-EXPORT_SYMBOL_GPL(rt2x00pci_probe);
-
-void rt2x00pci_remove(struct pci_dev *pci_dev)
-{
- struct ieee80211_hw *hw = pci_get_drvdata(pci_dev);
- struct rt2x00_dev *rt2x00dev = hw->priv;
-
- /*
- * Free all allocated data.
- */
- rt2x00lib_remove_dev(rt2x00dev);
- rt2x00pci_free_reg(rt2x00dev);
- ieee80211_free_hw(hw);
-
- /*
- * Free the PCI device data.
- */
- pci_disable_device(pci_dev);
- pci_release_regions(pci_dev);
-}
-EXPORT_SYMBOL_GPL(rt2x00pci_remove);
-
-#ifdef CONFIG_PM
-int rt2x00pci_suspend(struct pci_dev *pci_dev, pm_message_t state)
-{
- struct ieee80211_hw *hw = pci_get_drvdata(pci_dev);
- struct rt2x00_dev *rt2x00dev = hw->priv;
- int retval;
-
- retval = rt2x00lib_suspend(rt2x00dev, state);
- if (retval)
- return retval;
-
- pci_save_state(pci_dev);
- pci_disable_device(pci_dev);
- return pci_set_power_state(pci_dev, pci_choose_state(pci_dev, state));
-}
-EXPORT_SYMBOL_GPL(rt2x00pci_suspend);
-
-int rt2x00pci_resume(struct pci_dev *pci_dev)
-{
- struct ieee80211_hw *hw = pci_get_drvdata(pci_dev);
- struct rt2x00_dev *rt2x00dev = hw->priv;
-
- if (pci_set_power_state(pci_dev, PCI_D0) ||
- pci_enable_device(pci_dev)) {
- rt2x00_err(rt2x00dev, "Failed to resume device\n");
- return -EIO;
- }
-
- pci_restore_state(pci_dev);
- return rt2x00lib_resume(rt2x00dev);
-}
-EXPORT_SYMBOL_GPL(rt2x00pci_resume);
-#endif /* CONFIG_PM */
-
-/*
- * rt2x00pci module information.
- */
-MODULE_AUTHOR(DRV_PROJECT);
-MODULE_VERSION(DRV_VERSION);
-MODULE_DESCRIPTION("rt2x00 pci library");
-MODULE_LICENSE("GPL");
projects / cascardo / linux.git / blobdiff