| /* |
| 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"); |