/*
Module: rt2x00pci
Abstract: rt2x00 generic pci device routines.
- Supported chipsets: rt2460, rt2560, rt2561, rt2561s & rt2661.
*/
/*
*/
#define DRV_NAME "rt2x00pci"
+#include <linux/dma-mapping.h>
#include <linux/kernel.h>
#include <linux/module.h>
-#include <linux/version.h>
-#include <linux/init.h>
#include <linux/pci.h>
#include "rt2x00.h"
* Beacon handlers.
*/
int rt2x00pci_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb,
- struct ieee80211_tx_control *control)
+ struct ieee80211_tx_control *control)
{
struct rt2x00_dev *rt2x00dev = hw->priv;
struct data_ring *ring =
- rt2x00_get_ring(rt2x00dev, IEEE80211_TX_QUEUE_BEACON);
+ rt2x00lib_get_ring(rt2x00dev, IEEE80211_TX_QUEUE_BEACON);
struct data_entry *entry = rt2x00_get_data_entry(ring);
/*
- * Just in case the ieee80211 doesn't set this,
+ * Just in case mac80211 doesn't set this correctly,
* but we need this queue set for the descriptor
* initialization.
*/
* Update the beacon entry.
*/
memcpy(entry->data_addr, skb->data, skb->len);
- rt2x00lib_write_tx_desc(rt2x00dev, entry, entry->priv,
- (struct ieee80211_hdr*)skb->data, skb->len, control);
+ rt2x00lib_write_tx_desc(rt2x00dev, entry->priv,
+ (struct ieee80211_hdr *)skb->data,
+ skb->len, control);
/*
* Enable beacon generation.
}
EXPORT_SYMBOL_GPL(rt2x00pci_beacon_update);
-void rt2x00pci_beacondone(struct rt2x00_dev *rt2x00dev, const int queue)
-{
- struct data_ring *ring = rt2x00_get_ring(rt2x00dev, queue);
- struct data_entry *entry = rt2x00_get_data_entry(ring);
- struct sk_buff *skb;
-
- skb = ieee80211_beacon_get(rt2x00dev->hw,
- rt2x00dev->interface.id, &entry->tx_status.control);
- if (!skb)
- return;
-
- rt2x00dev->ops->hw->beacon_update(rt2x00dev->hw, skb,
- &entry->tx_status.control);
-
- dev_kfree_skb(skb);
-}
-EXPORT_SYMBOL_GPL(rt2x00pci_beacondone);
-
/*
* 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 data_ring *ring, struct sk_buff *skb,
+ struct ieee80211_tx_control *control)
{
- struct ieee80211_hdr *ieee80211hdr = (struct ieee80211_hdr*)skb->data;
+ 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;
rt2x00_desc_read(txd, 0, &word);
- if (rt2x00_get_field32(word, TXD_ENTRY_AVAILABLE)) {
+ 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);
+ "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;
}
- memcpy(entry->data_addr, skb->data, skb->len);
- rt2x00lib_write_tx_desc(rt2x00dev, entry, txd, ieee80211hdr,
- skb->len, control);
- memcpy(&entry->tx_status.control, control, sizeof(*control));
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);
}
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 data_addr_offset(__ring, __i) \
({ \
- (__ring)->data_addr \
- + ((__ring)->stats.limit * (__ring)->desc_size) \
- + ((__i) * (__ring)->data_size); \
+ (__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); \
+ (__ring)->data_dma + \
+ ((__ring)->stats.limit * (__ring)->desc_size) + \
+ ((__i) * (__ring)->data_size); \
})
-static int rt2x00pci_alloc_ring(struct rt2x00_dev *rt2x00dev,
- struct data_ring *ring)
+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);
+ rt2x00_get_ring_size(ring),
+ &ring->data_dma);
if (!ring->data_addr)
return -ENOMEM;
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);
* Allocate DMA
*/
ring_for_each(rt2x00dev, ring) {
- status = rt2x00pci_alloc_ring(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_dev->driver->name, rt2x00dev);
+ IRQF_SHARED, pci_name(pci_dev), rt2x00dev);
if (status) {
ERROR(rt2x00dev, "IRQ %d allocation failed (error %d).\n",
- pci_dev->irq, status);
+ pci_dev->irq, status);
return status;
}
/*
* Free DMA
*/
- ring_for_each(rt2x00dev, 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;
- }
+ ring_for_each(rt2x00dev, ring)
+ rt2x00pci_free_dma(rt2x00dev, ring);
}
EXPORT_SYMBOL_GPL(rt2x00pci_uninitialize);
/*
* PCI driver handlers.
*/
-static int rt2x00pci_alloc_csr(struct rt2x00_dev *rt2x00dev)
+static void rt2x00pci_free_reg(struct rt2x00_dev *rt2x00dev)
{
- rt2x00dev->csr_addr = ioremap(
- pci_resource_start(rt2x00dev_pci(rt2x00dev), 0),
- pci_resource_len(rt2x00dev_pci(rt2x00dev), 0));
- if (!rt2x00dev->csr_addr) {
- ERROR(rt2x00dev, "Ioremap failed.\n");
- return -ENOMEM;
- }
+ kfree(rt2x00dev->rf);
+ rt2x00dev->rf = NULL;
- return 0;
-}
+ kfree(rt2x00dev->eeprom);
+ rt2x00dev->eeprom = NULL;
-static void rt2x00pci_free_csr(struct rt2x00_dev *rt2x00dev)
-{
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 rt2x00_ops *ops = (struct rt2x00_ops *)id->driver_data;
struct ieee80211_hw *hw;
struct rt2x00_dev *rt2x00dev;
int retval;
rt2x00dev = hw->priv;
rt2x00dev->dev = pci_dev;
- rt2x00dev->device = &pci_dev->dev;
rt2x00dev->ops = ops;
rt2x00dev->hw = hw;
- retval = rt2x00pci_alloc_csr(rt2x00dev);
+ retval = rt2x00pci_alloc_reg(rt2x00dev);
if (retval)
goto exit_free_device;
retval = rt2x00lib_probe_dev(rt2x00dev);
if (retval)
- goto exit_free_csr;
+ goto exit_free_reg;
return 0;
-exit_free_csr:
- rt2x00pci_free_csr(rt2x00dev);
+exit_free_reg:
+ rt2x00pci_free_reg(rt2x00dev);
exit_free_device:
ieee80211_free_hw(hw);
* Free all allocated data.
*/
rt2x00lib_remove_dev(rt2x00dev);
+ rt2x00pci_free_reg(rt2x00dev);
ieee80211_free_hw(hw);
/*
if (retval)
return retval;
- rt2x00pci_free_csr(rt2x00dev);
+ rt2x00pci_free_reg(rt2x00dev);
pci_save_state(pci_dev);
pci_disable_device(pci_dev);
return -EIO;
}
- retval = rt2x00pci_alloc_csr(rt2x00dev);
+ retval = rt2x00pci_alloc_reg(rt2x00dev);
if (retval)
return retval;
- return rt2x00lib_resume(rt2x00dev);
+ 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 */
projects / openwrt.git / blobdiff