struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
struct iwl_bus *bus;
struct iwl_pci_bus *pci_bus;
- u16 pci_cmd;
int err;
bus = kzalloc(sizeof(*bus) + sizeof(*pci_bus), GFP_KERNEL);
dev_printk(KERN_ERR, &pdev->dev,
"Couldn't allocate iwl_shared");
err = -ENOMEM;
- goto out_no_pci;
+ goto out_free_bus;
}
bus->shrd->bus = bus;
pci_set_drvdata(pdev, bus);
- /* W/A - seems to solve weird behavior. We need to remove this if we
- * don't want to stay in L1 all the time. This wastes a lot of power */
- pci_disable_link_state(pdev, PCIE_LINK_STATE_L0S | PCIE_LINK_STATE_L1 |
- PCIE_LINK_STATE_CLKPM);
-
- if (pci_enable_device(pdev)) {
- err = -ENODEV;
- goto out_no_pci;
- }
-
- pci_set_master(pdev);
-
- err = pci_set_dma_mask(pdev, DMA_BIT_MASK(36));
- if (!err)
- err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(36));
- if (err) {
- err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
- if (!err)
- err = pci_set_consistent_dma_mask(pdev,
- DMA_BIT_MASK(32));
- /* both attempts failed: */
- if (err) {
- dev_printk(KERN_ERR, bus->dev,
- "No suitable DMA available.\n");
- goto out_pci_disable_device;
- }
- }
-
- err = pci_request_regions(pdev, DRV_NAME);
- if (err) {
- dev_printk(KERN_ERR, bus->dev, "pci_request_regions failed");
- goto out_pci_disable_device;
- }
-
- pci_bus->hw_base = pci_iomap(pdev, 0, 0);
- if (!pci_bus->hw_base) {
- dev_printk(KERN_ERR, bus->dev, "pci_iomap failed");
- err = -ENODEV;
- goto out_pci_release_regions;
- }
-
- dev_printk(KERN_INFO, &pdev->dev,
- "pci_resource_len = 0x%08llx\n",
- (unsigned long long) pci_resource_len(pdev, 0));
- dev_printk(KERN_INFO, &pdev->dev,
- "pci_resource_base = %p\n", pci_bus->hw_base);
-
- dev_printk(KERN_INFO, &pdev->dev,
- "HW Revision ID = 0x%X\n", pdev->revision);
-
- /* We disable the RETRY_TIMEOUT register (0x41) to keep
- * PCI Tx retries from interfering with C3 CPU state */
- pci_write_config_byte(pdev, PCI_CFG_RETRY_TIMEOUT, 0x00);
-
- err = pci_enable_msi(pdev);
- if (err)
- dev_printk(KERN_ERR, &pdev->dev,
- "pci_enable_msi failed(0X%x)", err);
-
- /* TODO: Move this away, not needed if not MSI */
- /* enable rfkill interrupt: hw bug w/a */
- pci_read_config_word(pdev, PCI_COMMAND, &pci_cmd);
- if (pci_cmd & PCI_COMMAND_INTX_DISABLE) {
- pci_cmd &= ~PCI_COMMAND_INTX_DISABLE;
- pci_write_config_word(pdev, PCI_COMMAND, pci_cmd);
- }
-
bus->dev = &pdev->dev;
- bus->irq = pdev->irq;
bus->ops = &bus_ops_pci;
#ifdef CONFIG_IWLWIFI_IDI
trans(bus) = iwl_trans_idi_alloc(bus->shrd, pdev, ent);
if (trans(bus) == NULL) {
err = -ENOMEM;
- goto out_disable_msi;
+ goto out_free_bus;
}
err = iwl_probe(bus, &trans_ops_idi, cfg);
trans(bus) = iwl_trans_pcie_alloc(bus->shrd, pdev, ent);
if (trans(bus) == NULL) {
err = -ENOMEM;
- goto out_disable_msi;
+ goto out_free_bus;
}
err = iwl_probe(bus, &trans_ops_pcie, cfg);
#endif
if (err)
goto out_free_trans;
+
return 0;
out_free_trans:
iwl_trans_free(trans(bus));
-out_disable_msi:
- pci_disable_msi(pdev);
- pci_iounmap(pdev, pci_bus->hw_base);
-out_pci_release_regions:
pci_set_drvdata(pdev, NULL);
- pci_release_regions(pdev);
-out_pci_disable_device:
- pci_disable_device(pdev);
-out_no_pci:
+out_free_bus:
kfree(bus->shrd);
kfree(bus);
return err;
static void __devexit iwl_pci_remove(struct pci_dev *pdev)
{
struct iwl_bus *bus = pci_get_drvdata(pdev);
- struct iwl_pci_bus *pci_bus = IWL_BUS_GET_PCI_BUS(bus);
- struct pci_dev *pci_dev = IWL_BUS_GET_PCI_DEV(bus);
struct iwl_shared *shrd = bus->shrd;
iwl_remove(shrd->priv);
iwl_trans_free(shrd->trans);
- pci_disable_msi(pci_dev);
- pci_iounmap(pci_dev, pci_bus->hw_base);
- pci_release_regions(pci_dev);
- pci_disable_device(pci_dev);
- pci_set_drvdata(pci_dev, NULL);
+ pci_set_drvdata(pdev, NULL);
kfree(bus->shrd);
kfree(bus);
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*****************************************************************************/
+#include <linux/pci.h>
+#include <linux/pci-aspm.h>
#include <linux/interrupt.h>
#include <linux/debugfs.h>
#include <linux/bitops.h>
spin_unlock_irqrestore(&trans->shrd->lock, flags);
/* wait to make sure we flush pending tasklet*/
- synchronize_irq(bus(trans)->irq);
+ synchronize_irq(trans->irq);
tasklet_kill(&trans_pcie->irq_tasklet);
/* stop and reset the on-board processor */
iwl_alloc_isr_ict(trans);
- err = request_irq(bus(trans)->irq, iwl_isr_ict, IRQF_SHARED,
+ err = request_irq(trans->irq, iwl_isr_ict, IRQF_SHARED,
DRV_NAME, trans);
if (err) {
- IWL_ERR(trans, "Error allocating IRQ %d\n", bus(trans)->irq);
+ IWL_ERR(trans, "Error allocating IRQ %d\n", trans->irq);
iwl_free_isr_ict(trans);
return err;
}
static void iwl_trans_pcie_free(struct iwl_trans *trans)
{
+ struct iwl_trans_pcie *trans_pcie =
+ IWL_TRANS_GET_PCIE_TRANS(trans);
+
iwl_calib_free_results(trans);
iwl_trans_pcie_tx_free(trans);
#ifndef CONFIG_IWLWIFI_IDI
iwl_trans_pcie_rx_free(trans);
#endif
- free_irq(bus(trans)->irq, trans);
+ free_irq(trans->irq, trans);
iwl_free_isr_ict(trans);
+
+ pci_disable_msi(trans_pcie->pci_dev);
+ pci_iounmap(trans_pcie->pci_dev, trans_pcie->hw_base);
+ pci_release_regions(trans_pcie->pci_dev);
+ pci_disable_device(trans_pcie->pci_dev);
+
trans->shrd->trans = NULL;
kfree(trans);
}
}
}
-const struct iwl_trans_ops trans_ops_pcie;
-
-struct iwl_trans *iwl_trans_pcie_alloc(struct iwl_shared *shrd,
- struct pci_dev *pdev,
- const struct pci_device_id *ent)
-{
- struct iwl_trans_pcie *trans_pcie;
- struct iwl_trans *iwl_trans = kzalloc(sizeof(struct iwl_trans) +
- sizeof(struct iwl_trans_pcie),
- GFP_KERNEL);
-
- if (WARN_ON(!iwl_trans))
- return NULL;
-
- trans_pcie = IWL_TRANS_GET_PCIE_TRANS(iwl_trans);
-
- iwl_trans->ops = &trans_ops_pcie;
- iwl_trans->shrd = shrd;
- trans_pcie->trans = iwl_trans;
- spin_lock_init(&iwl_trans->hcmd_lock);
-
- return iwl_trans;
-}
-
static void iwl_trans_pcie_stop_queue(struct iwl_trans *trans, int txq_id,
const char *msg)
{
.resume = iwl_trans_pcie_resume,
#endif
};
+
+/* TODO: remove this hack - will be possible when all the io{write/read} ops
+ * will be done through the transport
+ */
+struct iwl_pci_bus {
+ /* basic pci-network driver stuff */
+ struct pci_dev *pci_dev;
+
+ /* pci hardware address support */
+ void __iomem *hw_base;
+};
+
+#define IWL_BUS_GET_PCI_BUS(_iwl_bus) \
+ ((struct iwl_pci_bus *) ((_iwl_bus)->bus_specific))
+
+/* PCI registers */
+#define PCI_CFG_RETRY_TIMEOUT 0x041
+
+struct iwl_trans *iwl_trans_pcie_alloc(struct iwl_shared *shrd,
+ struct pci_dev *pdev,
+ const struct pci_device_id *ent)
+{
+ struct iwl_pci_bus *iwl_pci_bus = IWL_BUS_GET_PCI_BUS(shrd->bus);
+ struct iwl_trans_pcie *trans_pcie;
+ struct iwl_trans *trans;
+ u16 pci_cmd;
+ int err;
+
+ trans = kzalloc(sizeof(struct iwl_trans) +
+ sizeof(struct iwl_trans_pcie), GFP_KERNEL);
+
+ if (WARN_ON(!trans))
+ return NULL;
+
+ trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
+
+ trans->ops = &trans_ops_pcie;
+ trans->shrd = shrd;
+ trans_pcie->trans = trans;
+ spin_lock_init(&trans->hcmd_lock);
+
+ /* W/A - seems to solve weird behavior. We need to remove this if we
+ * don't want to stay in L1 all the time. This wastes a lot of power */
+ pci_disable_link_state(pdev, PCIE_LINK_STATE_L0S | PCIE_LINK_STATE_L1 |
+ PCIE_LINK_STATE_CLKPM);
+
+ if (pci_enable_device(pdev)) {
+ err = -ENODEV;
+ goto out_no_pci;
+ }
+
+ pci_set_master(pdev);
+
+ err = pci_set_dma_mask(pdev, DMA_BIT_MASK(36));
+ if (!err)
+ err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(36));
+ if (err) {
+ err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
+ if (!err)
+ err = pci_set_consistent_dma_mask(pdev,
+ DMA_BIT_MASK(32));
+ /* both attempts failed: */
+ if (err) {
+ dev_printk(KERN_ERR, &pdev->dev,
+ "No suitable DMA available.\n");
+ goto out_pci_disable_device;
+ }
+ }
+
+ err = pci_request_regions(pdev, DRV_NAME);
+ if (err) {
+ dev_printk(KERN_ERR, &pdev->dev, "pci_request_regions failed");
+ goto out_pci_disable_device;
+ }
+
+ trans_pcie->hw_base = pci_iomap(pdev, 0, 0);
+ if (!trans_pcie->hw_base) {
+ dev_printk(KERN_ERR, &pdev->dev, "pci_iomap failed");
+ err = -ENODEV;
+ goto out_pci_release_regions;
+ }
+
+ /* TODO: remove this hack */
+ iwl_pci_bus->hw_base = trans_pcie->hw_base;
+
+ dev_printk(KERN_INFO, &pdev->dev,
+ "pci_resource_len = 0x%08llx\n",
+ (unsigned long long) pci_resource_len(pdev, 0));
+ dev_printk(KERN_INFO, &pdev->dev,
+ "pci_resource_base = %p\n", trans_pcie->hw_base);
+
+ dev_printk(KERN_INFO, &pdev->dev,
+ "HW Revision ID = 0x%X\n", pdev->revision);
+
+ /* We disable the RETRY_TIMEOUT register (0x41) to keep
+ * PCI Tx retries from interfering with C3 CPU state */
+ pci_write_config_byte(pdev, PCI_CFG_RETRY_TIMEOUT, 0x00);
+
+ err = pci_enable_msi(pdev);
+ if (err)
+ dev_printk(KERN_ERR, &pdev->dev,
+ "pci_enable_msi failed(0X%x)", err);
+
+ trans->dev = &pdev->dev;
+ trans->irq = pdev->irq;
+ trans_pcie->pci_dev = pdev;
+
+ /* TODO: Move this away, not needed if not MSI */
+ /* enable rfkill interrupt: hw bug w/a */
+ pci_read_config_word(pdev, PCI_COMMAND, &pci_cmd);
+ if (pci_cmd & PCI_COMMAND_INTX_DISABLE) {
+ pci_cmd &= ~PCI_COMMAND_INTX_DISABLE;
+ pci_write_config_word(pdev, PCI_COMMAND, pci_cmd);
+ }
+
+ return trans;
+
+out_pci_release_regions:
+ pci_release_regions(pdev);
+out_pci_disable_device:
+ pci_disable_device(pdev);
+out_no_pci:
+ kfree(trans);
+ return NULL;
+}
+
projects / kernel / kernel-generic.git / commitdiff