diff options
Diffstat (limited to 'drivers/net/wireless/p54/p54pci.c')
| -rw-r--r-- | drivers/net/wireless/p54/p54pci.c | 703 |
1 files changed, 0 insertions, 703 deletions
diff --git a/drivers/net/wireless/p54/p54pci.c b/drivers/net/wireless/p54/p54pci.c deleted file mode 100644 index 977ef9fb9..000000000 --- a/drivers/net/wireless/p54/p54pci.c +++ /dev/null @@ -1,703 +0,0 @@ - -/* - * Linux device driver for PCI based Prism54 - * - * Copyright (c) 2006, Michael Wu <flamingice@sourmilk.net> - * Copyright (c) 2008, Christian Lamparter <chunkeey@web.de> - * - * Based on the islsm (softmac prism54) driver, which is: - * Copyright 2004-2006 Jean-Baptiste Note <jean-baptiste.note@m4x.org>, et al. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - */ - -#include <linux/pci.h> -#include <linux/slab.h> -#include <linux/firmware.h> -#include <linux/etherdevice.h> -#include <linux/delay.h> -#include <linux/completion.h> -#include <linux/module.h> -#include <net/mac80211.h> - -#include "p54.h" -#include "lmac.h" -#include "p54pci.h" - -MODULE_AUTHOR("Michael Wu <flamingice@sourmilk.net>"); -MODULE_DESCRIPTION("Prism54 PCI wireless driver"); -MODULE_LICENSE("GPL"); -MODULE_ALIAS("prism54pci"); -/*(DEBLOBBED)*/ - -static const struct pci_device_id p54p_table[] = { - /* Intersil PRISM Duette/Prism GT Wireless LAN adapter */ - { PCI_DEVICE(0x1260, 0x3890) }, - /* 3COM 3CRWE154G72 Wireless LAN adapter */ - { PCI_DEVICE(0x10b7, 0x6001) }, - /* Intersil PRISM Indigo Wireless LAN adapter */ - { PCI_DEVICE(0x1260, 0x3877) }, - /* Intersil PRISM Javelin/Xbow Wireless LAN adapter */ - { PCI_DEVICE(0x1260, 0x3886) }, - /* Intersil PRISM Xbow Wireless LAN adapter (Symbol AP-300) */ - { PCI_DEVICE(0x1260, 0xffff) }, - { }, -}; - -MODULE_DEVICE_TABLE(pci, p54p_table); - -static int p54p_upload_firmware(struct ieee80211_hw *dev) -{ - struct p54p_priv *priv = dev->priv; - __le32 reg; - int err; - __le32 *data; - u32 remains, left, device_addr; - - P54P_WRITE(int_enable, cpu_to_le32(0)); - P54P_READ(int_enable); - udelay(10); - - reg = P54P_READ(ctrl_stat); - reg &= cpu_to_le32(~ISL38XX_CTRL_STAT_RESET); - reg &= cpu_to_le32(~ISL38XX_CTRL_STAT_RAMBOOT); - P54P_WRITE(ctrl_stat, reg); - P54P_READ(ctrl_stat); - udelay(10); - - reg |= cpu_to_le32(ISL38XX_CTRL_STAT_RESET); - P54P_WRITE(ctrl_stat, reg); - wmb(); - udelay(10); - - reg &= cpu_to_le32(~ISL38XX_CTRL_STAT_RESET); - P54P_WRITE(ctrl_stat, reg); - wmb(); - - /* wait for the firmware to reset properly */ - mdelay(10); - - err = p54_parse_firmware(dev, priv->firmware); - if (err) - return err; - - if (priv->common.fw_interface != FW_LM86) { - dev_err(&priv->pdev->dev, "wrong firmware, " - "please get a LM86(PCI) firmware a try again.\n"); - return -EINVAL; - } - - data = (__le32 *) priv->firmware->data; - remains = priv->firmware->size; - device_addr = ISL38XX_DEV_FIRMWARE_ADDR; - while (remains) { - u32 i = 0; - left = min((u32)0x1000, remains); - P54P_WRITE(direct_mem_base, cpu_to_le32(device_addr)); - P54P_READ(int_enable); - - device_addr += 0x1000; - while (i < left) { - P54P_WRITE(direct_mem_win[i], *data++); - i += sizeof(u32); - } - - remains -= left; - P54P_READ(int_enable); - } - - reg = P54P_READ(ctrl_stat); - reg &= cpu_to_le32(~ISL38XX_CTRL_STAT_CLKRUN); - reg &= cpu_to_le32(~ISL38XX_CTRL_STAT_RESET); - reg |= cpu_to_le32(ISL38XX_CTRL_STAT_RAMBOOT); - P54P_WRITE(ctrl_stat, reg); - P54P_READ(ctrl_stat); - udelay(10); - - reg |= cpu_to_le32(ISL38XX_CTRL_STAT_RESET); - P54P_WRITE(ctrl_stat, reg); - wmb(); - udelay(10); - - reg &= cpu_to_le32(~ISL38XX_CTRL_STAT_RESET); - P54P_WRITE(ctrl_stat, reg); - wmb(); - udelay(10); - - /* wait for the firmware to boot properly */ - mdelay(100); - - return 0; -} - -static void p54p_refill_rx_ring(struct ieee80211_hw *dev, - int ring_index, struct p54p_desc *ring, u32 ring_limit, - struct sk_buff **rx_buf, u32 index) -{ - struct p54p_priv *priv = dev->priv; - struct p54p_ring_control *ring_control = priv->ring_control; - u32 limit, idx, i; - - idx = le32_to_cpu(ring_control->host_idx[ring_index]); - limit = idx; - limit -= index; - limit = ring_limit - limit; - - i = idx % ring_limit; - while (limit-- > 1) { - struct p54p_desc *desc = &ring[i]; - - if (!desc->host_addr) { - struct sk_buff *skb; - dma_addr_t mapping; - skb = dev_alloc_skb(priv->common.rx_mtu + 32); - if (!skb) - break; - - mapping = pci_map_single(priv->pdev, - skb_tail_pointer(skb), - priv->common.rx_mtu + 32, - PCI_DMA_FROMDEVICE); - - if (pci_dma_mapping_error(priv->pdev, mapping)) { - dev_kfree_skb_any(skb); - dev_err(&priv->pdev->dev, - "RX DMA Mapping error\n"); - break; - } - - desc->host_addr = cpu_to_le32(mapping); - desc->device_addr = 0; // FIXME: necessary? - desc->len = cpu_to_le16(priv->common.rx_mtu + 32); - desc->flags = 0; - rx_buf[i] = skb; - } - - i++; - idx++; - i %= ring_limit; - } - - wmb(); - ring_control->host_idx[ring_index] = cpu_to_le32(idx); -} - -static void p54p_check_rx_ring(struct ieee80211_hw *dev, u32 *index, - int ring_index, struct p54p_desc *ring, u32 ring_limit, - struct sk_buff **rx_buf) -{ - struct p54p_priv *priv = dev->priv; - struct p54p_ring_control *ring_control = priv->ring_control; - struct p54p_desc *desc; - u32 idx, i; - - i = (*index) % ring_limit; - (*index) = idx = le32_to_cpu(ring_control->device_idx[ring_index]); - idx %= ring_limit; - while (i != idx) { - u16 len; - struct sk_buff *skb; - dma_addr_t dma_addr; - desc = &ring[i]; - len = le16_to_cpu(desc->len); - skb = rx_buf[i]; - - if (!skb) { - i++; - i %= ring_limit; - continue; - } - - if (unlikely(len > priv->common.rx_mtu)) { - if (net_ratelimit()) - dev_err(&priv->pdev->dev, "rx'd frame size " - "exceeds length threshold.\n"); - - len = priv->common.rx_mtu; - } - dma_addr = le32_to_cpu(desc->host_addr); - pci_dma_sync_single_for_cpu(priv->pdev, dma_addr, - priv->common.rx_mtu + 32, PCI_DMA_FROMDEVICE); - skb_put(skb, len); - - if (p54_rx(dev, skb)) { - pci_unmap_single(priv->pdev, dma_addr, - priv->common.rx_mtu + 32, PCI_DMA_FROMDEVICE); - rx_buf[i] = NULL; - desc->host_addr = cpu_to_le32(0); - } else { - skb_trim(skb, 0); - pci_dma_sync_single_for_device(priv->pdev, dma_addr, - priv->common.rx_mtu + 32, PCI_DMA_FROMDEVICE); - desc->len = cpu_to_le16(priv->common.rx_mtu + 32); - } - - i++; - i %= ring_limit; - } - - p54p_refill_rx_ring(dev, ring_index, ring, ring_limit, rx_buf, *index); -} - -static void p54p_check_tx_ring(struct ieee80211_hw *dev, u32 *index, - int ring_index, struct p54p_desc *ring, u32 ring_limit, - struct sk_buff **tx_buf) -{ - struct p54p_priv *priv = dev->priv; - struct p54p_ring_control *ring_control = priv->ring_control; - struct p54p_desc *desc; - struct sk_buff *skb; - u32 idx, i; - - i = (*index) % ring_limit; - (*index) = idx = le32_to_cpu(ring_control->device_idx[ring_index]); - idx %= ring_limit; - - while (i != idx) { - desc = &ring[i]; - - skb = tx_buf[i]; - tx_buf[i] = NULL; - - pci_unmap_single(priv->pdev, le32_to_cpu(desc->host_addr), - le16_to_cpu(desc->len), PCI_DMA_TODEVICE); - - desc->host_addr = 0; - desc->device_addr = 0; - desc->len = 0; - desc->flags = 0; - - if (skb && FREE_AFTER_TX(skb)) - p54_free_skb(dev, skb); - - i++; - i %= ring_limit; - } -} - -static void p54p_tasklet(unsigned long dev_id) -{ - struct ieee80211_hw *dev = (struct ieee80211_hw *)dev_id; - struct p54p_priv *priv = dev->priv; - struct p54p_ring_control *ring_control = priv->ring_control; - - p54p_check_tx_ring(dev, &priv->tx_idx_mgmt, 3, ring_control->tx_mgmt, - ARRAY_SIZE(ring_control->tx_mgmt), - priv->tx_buf_mgmt); - - p54p_check_tx_ring(dev, &priv->tx_idx_data, 1, ring_control->tx_data, - ARRAY_SIZE(ring_control->tx_data), - priv->tx_buf_data); - - p54p_check_rx_ring(dev, &priv->rx_idx_mgmt, 2, ring_control->rx_mgmt, - ARRAY_SIZE(ring_control->rx_mgmt), priv->rx_buf_mgmt); - - p54p_check_rx_ring(dev, &priv->rx_idx_data, 0, ring_control->rx_data, - ARRAY_SIZE(ring_control->rx_data), priv->rx_buf_data); - - wmb(); - P54P_WRITE(dev_int, cpu_to_le32(ISL38XX_DEV_INT_UPDATE)); -} - -static irqreturn_t p54p_interrupt(int irq, void *dev_id) -{ - struct ieee80211_hw *dev = dev_id; - struct p54p_priv *priv = dev->priv; - __le32 reg; - - reg = P54P_READ(int_ident); - if (unlikely(reg == cpu_to_le32(0xFFFFFFFF))) { - goto out; - } - P54P_WRITE(int_ack, reg); - - reg &= P54P_READ(int_enable); - - if (reg & cpu_to_le32(ISL38XX_INT_IDENT_UPDATE)) - tasklet_schedule(&priv->tasklet); - else if (reg & cpu_to_le32(ISL38XX_INT_IDENT_INIT)) - complete(&priv->boot_comp); - -out: - return reg ? IRQ_HANDLED : IRQ_NONE; -} - -static void p54p_tx(struct ieee80211_hw *dev, struct sk_buff *skb) -{ - unsigned long flags; - struct p54p_priv *priv = dev->priv; - struct p54p_ring_control *ring_control = priv->ring_control; - struct p54p_desc *desc; - dma_addr_t mapping; - u32 idx, i; - - spin_lock_irqsave(&priv->lock, flags); - idx = le32_to_cpu(ring_control->host_idx[1]); - i = idx % ARRAY_SIZE(ring_control->tx_data); - - mapping = pci_map_single(priv->pdev, skb->data, skb->len, - PCI_DMA_TODEVICE); - if (pci_dma_mapping_error(priv->pdev, mapping)) { - spin_unlock_irqrestore(&priv->lock, flags); - p54_free_skb(dev, skb); - dev_err(&priv->pdev->dev, "TX DMA mapping error\n"); - return ; - } - priv->tx_buf_data[i] = skb; - - desc = &ring_control->tx_data[i]; - desc->host_addr = cpu_to_le32(mapping); - desc->device_addr = ((struct p54_hdr *)skb->data)->req_id; - desc->len = cpu_to_le16(skb->len); - desc->flags = 0; - - wmb(); - ring_control->host_idx[1] = cpu_to_le32(idx + 1); - spin_unlock_irqrestore(&priv->lock, flags); - - P54P_WRITE(dev_int, cpu_to_le32(ISL38XX_DEV_INT_UPDATE)); - P54P_READ(dev_int); -} - -static void p54p_stop(struct ieee80211_hw *dev) -{ - struct p54p_priv *priv = dev->priv; - struct p54p_ring_control *ring_control = priv->ring_control; - unsigned int i; - struct p54p_desc *desc; - - P54P_WRITE(int_enable, cpu_to_le32(0)); - P54P_READ(int_enable); - udelay(10); - - free_irq(priv->pdev->irq, dev); - - tasklet_kill(&priv->tasklet); - - P54P_WRITE(dev_int, cpu_to_le32(ISL38XX_DEV_INT_RESET)); - - for (i = 0; i < ARRAY_SIZE(priv->rx_buf_data); i++) { - desc = &ring_control->rx_data[i]; - if (desc->host_addr) - pci_unmap_single(priv->pdev, - le32_to_cpu(desc->host_addr), - priv->common.rx_mtu + 32, - PCI_DMA_FROMDEVICE); - kfree_skb(priv->rx_buf_data[i]); - priv->rx_buf_data[i] = NULL; - } - - for (i = 0; i < ARRAY_SIZE(priv->rx_buf_mgmt); i++) { - desc = &ring_control->rx_mgmt[i]; - if (desc->host_addr) - pci_unmap_single(priv->pdev, - le32_to_cpu(desc->host_addr), - priv->common.rx_mtu + 32, - PCI_DMA_FROMDEVICE); - kfree_skb(priv->rx_buf_mgmt[i]); - priv->rx_buf_mgmt[i] = NULL; - } - - for (i = 0; i < ARRAY_SIZE(priv->tx_buf_data); i++) { - desc = &ring_control->tx_data[i]; - if (desc->host_addr) - pci_unmap_single(priv->pdev, - le32_to_cpu(desc->host_addr), - le16_to_cpu(desc->len), - PCI_DMA_TODEVICE); - - p54_free_skb(dev, priv->tx_buf_data[i]); - priv->tx_buf_data[i] = NULL; - } - - for (i = 0; i < ARRAY_SIZE(priv->tx_buf_mgmt); i++) { - desc = &ring_control->tx_mgmt[i]; - if (desc->host_addr) - pci_unmap_single(priv->pdev, - le32_to_cpu(desc->host_addr), - le16_to_cpu(desc->len), - PCI_DMA_TODEVICE); - - p54_free_skb(dev, priv->tx_buf_mgmt[i]); - priv->tx_buf_mgmt[i] = NULL; - } - - memset(ring_control, 0, sizeof(*ring_control)); -} - -static int p54p_open(struct ieee80211_hw *dev) -{ - struct p54p_priv *priv = dev->priv; - int err; - long timeout; - - init_completion(&priv->boot_comp); - err = request_irq(priv->pdev->irq, p54p_interrupt, - IRQF_SHARED, "p54pci", dev); - if (err) { - dev_err(&priv->pdev->dev, "failed to register IRQ handler\n"); - return err; - } - - memset(priv->ring_control, 0, sizeof(*priv->ring_control)); - err = p54p_upload_firmware(dev); - if (err) { - free_irq(priv->pdev->irq, dev); - return err; - } - priv->rx_idx_data = priv->tx_idx_data = 0; - priv->rx_idx_mgmt = priv->tx_idx_mgmt = 0; - - p54p_refill_rx_ring(dev, 0, priv->ring_control->rx_data, - ARRAY_SIZE(priv->ring_control->rx_data), priv->rx_buf_data, 0); - - p54p_refill_rx_ring(dev, 2, priv->ring_control->rx_mgmt, - ARRAY_SIZE(priv->ring_control->rx_mgmt), priv->rx_buf_mgmt, 0); - - P54P_WRITE(ring_control_base, cpu_to_le32(priv->ring_control_dma)); - P54P_READ(ring_control_base); - wmb(); - udelay(10); - - P54P_WRITE(int_enable, cpu_to_le32(ISL38XX_INT_IDENT_INIT)); - P54P_READ(int_enable); - wmb(); - udelay(10); - - P54P_WRITE(dev_int, cpu_to_le32(ISL38XX_DEV_INT_RESET)); - P54P_READ(dev_int); - - timeout = wait_for_completion_interruptible_timeout( - &priv->boot_comp, HZ); - if (timeout <= 0) { - wiphy_err(dev->wiphy, "Cannot boot firmware!\n"); - p54p_stop(dev); - return timeout ? -ERESTARTSYS : -ETIMEDOUT; - } - - P54P_WRITE(int_enable, cpu_to_le32(ISL38XX_INT_IDENT_UPDATE)); - P54P_READ(int_enable); - wmb(); - udelay(10); - - P54P_WRITE(dev_int, cpu_to_le32(ISL38XX_DEV_INT_UPDATE)); - P54P_READ(dev_int); - wmb(); - udelay(10); - - return 0; -} - -static void p54p_firmware_step2(const struct firmware *fw, - void *context) -{ - struct p54p_priv *priv = context; - struct ieee80211_hw *dev = priv->common.hw; - struct pci_dev *pdev = priv->pdev; - int err; - - if (!fw) { - dev_err(&pdev->dev, "Cannot find firmware (/*(DEBLOBBED)*/)\n"); - err = -ENOENT; - goto out; - } - - priv->firmware = fw; - - err = p54p_open(dev); - if (err) - goto out; - err = p54_read_eeprom(dev); - p54p_stop(dev); - if (err) - goto out; - - err = p54_register_common(dev, &pdev->dev); - if (err) - goto out; - -out: - - complete(&priv->fw_loaded); - - if (err) { - struct device *parent = pdev->dev.parent; - - if (parent) - device_lock(parent); - - /* - * This will indirectly result in a call to p54p_remove. - * Hence, we don't need to bother with freeing any - * allocated ressources at all. - */ - device_release_driver(&pdev->dev); - - if (parent) - device_unlock(parent); - } - - pci_dev_put(pdev); -} - -static int p54p_probe(struct pci_dev *pdev, - const struct pci_device_id *id) -{ - struct p54p_priv *priv; - struct ieee80211_hw *dev; - unsigned long mem_addr, mem_len; - int err; - - pci_dev_get(pdev); - err = pci_enable_device(pdev); - if (err) { - dev_err(&pdev->dev, "Cannot enable new PCI device\n"); - return err; - } - - mem_addr = pci_resource_start(pdev, 0); - mem_len = pci_resource_len(pdev, 0); - if (mem_len < sizeof(struct p54p_csr)) { - dev_err(&pdev->dev, "Too short PCI resources\n"); - err = -ENODEV; - goto err_disable_dev; - } - - err = pci_request_regions(pdev, "p54pci"); - if (err) { - dev_err(&pdev->dev, "Cannot obtain PCI resources\n"); - goto err_disable_dev; - } - - err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32)); - if (!err) - err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)); - if (err) { - dev_err(&pdev->dev, "No suitable DMA available\n"); - goto err_free_reg; - } - - pci_set_master(pdev); - pci_try_set_mwi(pdev); - - pci_write_config_byte(pdev, 0x40, 0); - pci_write_config_byte(pdev, 0x41, 0); - - dev = p54_init_common(sizeof(*priv)); - if (!dev) { - dev_err(&pdev->dev, "ieee80211 alloc failed\n"); - err = -ENOMEM; - goto err_free_reg; - } - - priv = dev->priv; - priv->pdev = pdev; - - init_completion(&priv->fw_loaded); - SET_IEEE80211_DEV(dev, &pdev->dev); - pci_set_drvdata(pdev, dev); - - priv->map = ioremap(mem_addr, mem_len); - if (!priv->map) { - dev_err(&pdev->dev, "Cannot map device memory\n"); - err = -ENOMEM; - goto err_free_dev; - } - - priv->ring_control = pci_alloc_consistent(pdev, sizeof(*priv->ring_control), - &priv->ring_control_dma); - if (!priv->ring_control) { - dev_err(&pdev->dev, "Cannot allocate rings\n"); - err = -ENOMEM; - goto err_iounmap; - } - priv->common.open = p54p_open; - priv->common.stop = p54p_stop; - priv->common.tx = p54p_tx; - - spin_lock_init(&priv->lock); - tasklet_init(&priv->tasklet, p54p_tasklet, (unsigned long)dev); - - err = reject_firmware_nowait(THIS_MODULE, 1, "/*(DEBLOBBED)*/", - &priv->pdev->dev, GFP_KERNEL, - priv, p54p_firmware_step2); - if (!err) - return 0; - - pci_free_consistent(pdev, sizeof(*priv->ring_control), - priv->ring_control, priv->ring_control_dma); - - err_iounmap: - iounmap(priv->map); - - err_free_dev: - p54_free_common(dev); - - err_free_reg: - pci_release_regions(pdev); - err_disable_dev: - pci_disable_device(pdev); - pci_dev_put(pdev); - return err; -} - -static void p54p_remove(struct pci_dev *pdev) -{ - struct ieee80211_hw *dev = pci_get_drvdata(pdev); - struct p54p_priv *priv; - - if (!dev) - return; - - priv = dev->priv; - wait_for_completion(&priv->fw_loaded); - p54_unregister_common(dev); - release_firmware(priv->firmware); - pci_free_consistent(pdev, sizeof(*priv->ring_control), - priv->ring_control, priv->ring_control_dma); - iounmap(priv->map); - pci_release_regions(pdev); - pci_disable_device(pdev); - p54_free_common(dev); -} - -#ifdef CONFIG_PM_SLEEP -static int p54p_suspend(struct device *device) -{ - struct pci_dev *pdev = to_pci_dev(device); - - pci_save_state(pdev); - pci_set_power_state(pdev, PCI_D3hot); - pci_disable_device(pdev); - return 0; -} - -static int p54p_resume(struct device *device) -{ - struct pci_dev *pdev = to_pci_dev(device); - int err; - - err = pci_reenable_device(pdev); - if (err) - return err; - return pci_set_power_state(pdev, PCI_D0); -} - -static SIMPLE_DEV_PM_OPS(p54pci_pm_ops, p54p_suspend, p54p_resume); - -#define P54P_PM_OPS (&p54pci_pm_ops) -#else -#define P54P_PM_OPS (NULL) -#endif /* CONFIG_PM_SLEEP */ - -static struct pci_driver p54p_driver = { - .name = "p54pci", - .id_table = p54p_table, - .probe = p54p_probe, - .remove = p54p_remove, - .driver.pm = P54P_PM_OPS, -}; - -module_pci_driver(p54p_driver); |