--- /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");
Code Review / kvmfornfv.git / blobdiff