diff options
Diffstat (limited to 'package/rt2x00/src/rt2x00pci.c')
-rw-r--r-- | package/rt2x00/src/rt2x00pci.c | 486 |
1 files changed, 0 insertions, 486 deletions
diff --git a/package/rt2x00/src/rt2x00pci.c b/package/rt2x00/src/rt2x00pci.c deleted file mode 100644 index 04663eb31..000000000 --- a/package/rt2x00/src/rt2x00pci.c +++ /dev/null @@ -1,486 +0,0 @@ -/* - Copyright (C) 2004 - 2007 rt2x00 SourceForge Project - <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, write to the - Free Software Foundation, Inc., - 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. - */ - -/* - Module: rt2x00pci - Abstract: rt2x00 generic pci device routines. - */ - -/* - * Set enviroment defines for rt2x00.h - */ -#define DRV_NAME "rt2x00pci" - -#include <linux/dma-mapping.h> -#include <linux/kernel.h> -#include <linux/module.h> -#include <linux/pci.h> - -#include "rt2x00.h" -#include "rt2x00pci.h" - -/* - * Beacon handlers. - */ -int rt2x00pci_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb, - struct ieee80211_tx_control *control) -{ - struct rt2x00_dev *rt2x00dev = hw->priv; - struct data_ring *ring = - rt2x00lib_get_ring(rt2x00dev, IEEE80211_TX_QUEUE_BEACON); - struct data_entry *entry = rt2x00_get_data_entry(ring); - - /* - * Just in case mac80211 doesn't set this correctly, - * but we need this queue set for the descriptor - * initialization. - */ - control->queue = IEEE80211_TX_QUEUE_BEACON; - - /* - * Update the beacon entry. - */ - memcpy(entry->data_addr, skb->data, skb->len); - rt2x00lib_write_tx_desc(rt2x00dev, entry->priv, - (struct ieee80211_hdr *)skb->data, - skb->len, control); - - /* - * Enable beacon generation. - */ - rt2x00dev->ops->lib->kick_tx_queue(rt2x00dev, control->queue); - - return 0; -} -EXPORT_SYMBOL_GPL(rt2x00pci_beacon_update); - -/* - * TX data handlers. - */ -int rt2x00pci_write_tx_data(struct rt2x00_dev *rt2x00dev, - struct data_ring *ring, struct sk_buff *skb, - struct ieee80211_tx_control *control) -{ - struct ieee80211_hdr *ieee80211hdr = (struct ieee80211_hdr *)skb->data; - struct data_entry *entry = rt2x00_get_data_entry(ring); - struct data_desc *txd = entry->priv; - u32 word; - - if (rt2x00_ring_full(ring)) { - ieee80211_stop_queue(rt2x00dev->hw, control->queue); - return -EINVAL; - } - - rt2x00_desc_read(txd, 0, &word); - - if (rt2x00_get_field32(word, TXD_ENTRY_OWNER_NIC) || - rt2x00_get_field32(word, TXD_ENTRY_VALID)) { - ERROR(rt2x00dev, - "Arrived at non-free entry in the non-full queue %d.\n" - "Please file bug report to %s.\n", - control->queue, DRV_PROJECT); - ieee80211_stop_queue(rt2x00dev->hw, control->queue); - return -EINVAL; - } - - entry->skb = skb; - memcpy(&entry->tx_status.control, control, sizeof(*control)); - memcpy(entry->data_addr, skb->data, skb->len); - rt2x00lib_write_tx_desc(rt2x00dev, txd, ieee80211hdr, - skb->len, control); - - rt2x00_ring_index_inc(ring); - - if (rt2x00_ring_full(ring)) - ieee80211_stop_queue(rt2x00dev->hw, control->queue); - - return 0; -} -EXPORT_SYMBOL_GPL(rt2x00pci_write_tx_data); - -/* - * RX data handlers. - */ -void rt2x00pci_rxdone(struct rt2x00_dev *rt2x00dev) -{ - struct data_ring *ring = rt2x00dev->rx; - struct data_entry *entry; - struct data_desc *rxd; - struct sk_buff *skb; - struct ieee80211_hdr *hdr; - struct rxdata_entry_desc desc; - int header_size; - int align; - u32 word; - - while (1) { - entry = rt2x00_get_data_entry(ring); - rxd = entry->priv; - rt2x00_desc_read(rxd, 0, &word); - - if (rt2x00_get_field32(word, RXD_ENTRY_OWNER_NIC)) - break; - - memset(&desc, 0x00, sizeof(desc)); - rt2x00dev->ops->lib->fill_rxdone(entry, &desc); - - hdr = (struct ieee80211_hdr *)entry->data_addr; - header_size = - ieee80211_get_hdrlen(le16_to_cpu(hdr->frame_control)); - - /* - * The data behind the ieee80211 header must be - * aligned on a 4 byte boundary. - */ - align = header_size % 4; - - /* - * Allocate the sk_buffer, initialize it and copy - * all data into it. - */ - skb = dev_alloc_skb(desc.size + align); - if (!skb) - return; - - skb_reserve(skb, align); - memcpy(skb_put(skb, desc.size), entry->data_addr, desc.size); - - /* - * Send the frame to rt2x00lib for further processing. - */ - rt2x00lib_rxdone(entry, skb, &desc); - - if (test_bit(DEVICE_ENABLED_RADIO, &ring->rt2x00dev->flags)) { - rt2x00_set_field32(&word, RXD_ENTRY_OWNER_NIC, 1); - rt2x00_desc_write(rxd, 0, word); - } - - rt2x00_ring_index_inc(ring); - } -} -EXPORT_SYMBOL_GPL(rt2x00pci_rxdone); - -/* - * Device initialization handlers. - */ -#define priv_offset(__ring, __i) \ -({ \ - ring->data_addr + (i * ring->desc_size); \ -}) - -#define data_addr_offset(__ring, __i) \ -({ \ - (__ring)->data_addr + \ - ((__ring)->stats.limit * (__ring)->desc_size) + \ - ((__i) * (__ring)->data_size); \ -}) - -#define data_dma_offset(__ring, __i) \ -({ \ - (__ring)->data_dma + \ - ((__ring)->stats.limit * (__ring)->desc_size) + \ - ((__i) * (__ring)->data_size); \ -}) - -static int rt2x00pci_alloc_dma(struct rt2x00_dev *rt2x00dev, - struct data_ring *ring) -{ - unsigned int i; - - /* - * Allocate DMA memory for descriptor and buffer. - */ - ring->data_addr = pci_alloc_consistent(rt2x00dev_pci(rt2x00dev), - rt2x00_get_ring_size(ring), - &ring->data_dma); - if (!ring->data_addr) - return -ENOMEM; - - /* - * Initialize all ring entries to contain valid - * addresses. - */ - for (i = 0; i < ring->stats.limit; i++) { - ring->entry[i].priv = priv_offset(ring, i); - ring->entry[i].data_addr = data_addr_offset(ring, i); - ring->entry[i].data_dma = data_dma_offset(ring, i); - } - - return 0; -} - -static void rt2x00pci_free_dma(struct rt2x00_dev *rt2x00dev, - struct data_ring *ring) -{ - if (ring->data_addr) - pci_free_consistent(rt2x00dev_pci(rt2x00dev), - rt2x00_get_ring_size(ring), - ring->data_addr, ring->data_dma); - ring->data_addr = NULL; -} - -int rt2x00pci_initialize(struct rt2x00_dev *rt2x00dev) -{ - struct pci_dev *pci_dev = rt2x00dev_pci(rt2x00dev); - struct data_ring *ring; - int status; - - /* - * Allocate DMA - */ - ring_for_each(rt2x00dev, ring) { - status = rt2x00pci_alloc_dma(rt2x00dev, ring); - if (status) - goto exit; - } - - /* - * Register interrupt handler. - */ - status = request_irq(pci_dev->irq, rt2x00dev->ops->lib->irq_handler, - IRQF_SHARED, pci_name(pci_dev), rt2x00dev); - if (status) { - ERROR(rt2x00dev, "IRQ %d allocation failed (error %d).\n", - pci_dev->irq, status); - return status; - } - - return 0; - -exit: - rt2x00pci_uninitialize(rt2x00dev); - - return status; -} -EXPORT_SYMBOL_GPL(rt2x00pci_initialize); - -void rt2x00pci_uninitialize(struct rt2x00_dev *rt2x00dev) -{ - struct data_ring *ring; - - /* - * Free irq line. - */ - free_irq(rt2x00dev_pci(rt2x00dev)->irq, rt2x00dev); - - /* - * Free DMA - */ - ring_for_each(rt2x00dev, ring) - rt2x00pci_free_dma(rt2x00dev, ring); -} -EXPORT_SYMBOL_GPL(rt2x00pci_uninitialize); - -/* - * 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_addr) { - iounmap(rt2x00dev->csr_addr); - rt2x00dev->csr_addr = NULL; - } -} - -static int rt2x00pci_alloc_reg(struct rt2x00_dev *rt2x00dev) -{ - struct pci_dev *pci_dev = rt2x00dev_pci(rt2x00dev); - - rt2x00dev->csr_addr = ioremap(pci_resource_start(pci_dev, 0), - pci_resource_len(pci_dev, 0)); - if (!rt2x00dev->csr_addr) - 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: - ERROR_PROBE("Failed to allocate registers.\n"); - - rt2x00pci_free_reg(rt2x00dev); - - return -ENOMEM; -} - -int rt2x00pci_probe(struct pci_dev *pci_dev, const struct pci_device_id *id) -{ - struct rt2x00_ops *ops = (struct rt2x00_ops *)id->driver_data; - struct ieee80211_hw *hw; - struct rt2x00_dev *rt2x00dev; - int retval; - - retval = pci_request_regions(pci_dev, pci_name(pci_dev)); - if (retval) { - ERROR_PROBE("PCI request regions failed.\n"); - return retval; - } - - retval = pci_enable_device(pci_dev); - if (retval) { - ERROR_PROBE("Enable device failed.\n"); - goto exit_release_regions; - } - - pci_set_master(pci_dev); - - if (pci_set_mwi(pci_dev)) - ERROR_PROBE("MWI not available.\n"); - - if (pci_set_dma_mask(pci_dev, DMA_64BIT_MASK) && - pci_set_dma_mask(pci_dev, DMA_32BIT_MASK)) { - ERROR_PROBE("PCI DMA not supported.\n"); - retval = -EIO; - goto exit_disable_device; - } - - hw = ieee80211_alloc_hw(sizeof(struct rt2x00_dev), ops->hw); - if (!hw) { - ERROR_PROBE("Failed to allocate hardware.\n"); - retval = -ENOMEM; - goto exit_disable_device; - } - - pci_set_drvdata(pci_dev, hw); - - rt2x00dev = hw->priv; - rt2x00dev->dev = pci_dev; - rt2x00dev->ops = ops; - rt2x00dev->hw = hw; - - retval = rt2x00pci_alloc_reg(rt2x00dev); - if (retval) - goto exit_free_device; - - 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_disable_device: - if (retval != -EBUSY) - pci_disable_device(pci_dev); - -exit_release_regions: - pci_release_regions(pci_dev); - - pci_set_drvdata(pci_dev, NULL); - - 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_set_drvdata(pci_dev, NULL); - 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; - - rt2x00pci_free_reg(rt2x00dev); - - 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; - int retval; - - if (pci_set_power_state(pci_dev, PCI_D0) || - pci_enable_device(pci_dev) || - pci_restore_state(pci_dev)) { - ERROR(rt2x00dev, "Failed to resume device.\n"); - return -EIO; - } - - retval = rt2x00pci_alloc_reg(rt2x00dev); - if (retval) - return retval; - - retval = rt2x00lib_resume(rt2x00dev); - if (retval) - goto exit_free_reg; - - return 0; - -exit_free_reg: - rt2x00pci_free_reg(rt2x00dev); - - return retval; -} -EXPORT_SYMBOL_GPL(rt2x00pci_resume); -#endif /* CONFIG_PM */ - -/* - * rt2x00pci module information. - */ -MODULE_AUTHOR(DRV_PROJECT); -MODULE_VERSION(DRV_VERSION); -MODULE_DESCRIPTION("rt2x00 library"); -MODULE_LICENSE("GPL"); |