461 lines
11 KiB
C
461 lines
11 KiB
C
|
// SPDX-License-Identifier: GPL-2.0-only
|
||
|
|
#define PRISM2_PCI
|
||
|
|
|
||
|
|
/* Host AP driver's support for Intersil Prism2.5 PCI cards is based on
|
||
|
|
* driver patches from Reyk Floeter <reyk@vantronix.net> and
|
||
|
|
* Andy Warner <andyw@pobox.com> */
|
||
|
|
|
||
|
|
#include <linux/module.h>
|
||
|
|
#include <linux/if.h>
|
||
|
|
#include <linux/skbuff.h>
|
||
|
|
#include <linux/netdevice.h>
|
||
|
|
#include <linux/slab.h>
|
||
|
|
#include <linux/workqueue.h>
|
||
|
|
#include <linux/wireless.h>
|
||
|
|
#include <net/iw_handler.h>
|
||
|
|
|
||
|
|
#include <linux/ioport.h>
|
||
|
|
#include <linux/pci.h>
|
||
|
|
#include <asm/io.h>
|
||
|
|
|
||
|
|
#include "hostap_wlan.h"
|
||
|
|
|
||
|
|
|
||
|
|
static char *dev_info = "hostap_pci";
|
||
|
|
|
||
|
|
|
||
|
|
MODULE_AUTHOR("Jouni Malinen");
|
||
|
|
MODULE_DESCRIPTION("Support for Intersil Prism2.5-based 802.11 wireless LAN "
|
||
|
|
"PCI cards.");
|
||
|
|
MODULE_SUPPORTED_DEVICE("Intersil Prism2.5-based WLAN PCI cards");
|
||
|
|
MODULE_LICENSE("GPL");
|
||
|
|
|
||
|
|
|
||
|
|
/* struct local_info::hw_priv */
|
||
|
|
struct hostap_pci_priv {
|
||
|
|
void __iomem *mem_start;
|
||
|
|
};
|
||
|
|
|
||
|
|
|
||
|
|
/* FIX: do we need mb/wmb/rmb with memory operations? */
|
||
|
|
|
||
|
|
|
||
|
|
static const struct pci_device_id prism2_pci_id_table[] = {
|
||
|
|
/* Intersil Prism3 ISL3872 11Mb/s WLAN Controller */
|
||
|
|
{ 0x1260, 0x3872, PCI_ANY_ID, PCI_ANY_ID },
|
||
|
|
/* Intersil Prism2.5 ISL3874 11Mb/s WLAN Controller */
|
||
|
|
{ 0x1260, 0x3873, PCI_ANY_ID, PCI_ANY_ID },
|
||
|
|
/* Samsung MagicLAN SWL-2210P */
|
||
|
|
{ 0x167d, 0xa000, PCI_ANY_ID, PCI_ANY_ID },
|
||
|
|
{ 0 }
|
||
|
|
};
|
||
|
|
|
||
|
|
|
||
|
|
#ifdef PRISM2_IO_DEBUG
|
||
|
|
|
||
|
|
static inline void hfa384x_outb_debug(struct net_device *dev, int a, u8 v)
|
||
|
|
{
|
||
|
|
struct hostap_interface *iface;
|
||
|
|
struct hostap_pci_priv *hw_priv;
|
||
|
|
local_info_t *local;
|
||
|
|
unsigned long flags;
|
||
|
|
|
||
|
|
iface = netdev_priv(dev);
|
||
|
|
local = iface->local;
|
||
|
|
hw_priv = local->hw_priv;
|
||
|
|
|
||
|
|
spin_lock_irqsave(&local->lock, flags);
|
||
|
|
prism2_io_debug_add(dev, PRISM2_IO_DEBUG_CMD_OUTB, a, v);
|
||
|
|
writeb(v, hw_priv->mem_start + a);
|
||
|
|
spin_unlock_irqrestore(&local->lock, flags);
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline u8 hfa384x_inb_debug(struct net_device *dev, int a)
|
||
|
|
{
|
||
|
|
struct hostap_interface *iface;
|
||
|
|
struct hostap_pci_priv *hw_priv;
|
||
|
|
local_info_t *local;
|
||
|
|
unsigned long flags;
|
||
|
|
u8 v;
|
||
|
|
|
||
|
|
iface = netdev_priv(dev);
|
||
|
|
local = iface->local;
|
||
|
|
hw_priv = local->hw_priv;
|
||
|
|
|
||
|
|
spin_lock_irqsave(&local->lock, flags);
|
||
|
|
v = readb(hw_priv->mem_start + a);
|
||
|
|
prism2_io_debug_add(dev, PRISM2_IO_DEBUG_CMD_INB, a, v);
|
||
|
|
spin_unlock_irqrestore(&local->lock, flags);
|
||
|
|
return v;
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline void hfa384x_outw_debug(struct net_device *dev, int a, u16 v)
|
||
|
|
{
|
||
|
|
struct hostap_interface *iface;
|
||
|
|
struct hostap_pci_priv *hw_priv;
|
||
|
|
local_info_t *local;
|
||
|
|
unsigned long flags;
|
||
|
|
|
||
|
|
iface = netdev_priv(dev);
|
||
|
|
local = iface->local;
|
||
|
|
hw_priv = local->hw_priv;
|
||
|
|
|
||
|
|
spin_lock_irqsave(&local->lock, flags);
|
||
|
|
prism2_io_debug_add(dev, PRISM2_IO_DEBUG_CMD_OUTW, a, v);
|
||
|
|
writew(v, hw_priv->mem_start + a);
|
||
|
|
spin_unlock_irqrestore(&local->lock, flags);
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline u16 hfa384x_inw_debug(struct net_device *dev, int a)
|
||
|
|
{
|
||
|
|
struct hostap_interface *iface;
|
||
|
|
struct hostap_pci_priv *hw_priv;
|
||
|
|
local_info_t *local;
|
||
|
|
unsigned long flags;
|
||
|
|
u16 v;
|
||
|
|
|
||
|
|
iface = netdev_priv(dev);
|
||
|
|
local = iface->local;
|
||
|
|
hw_priv = local->hw_priv;
|
||
|
|
|
||
|
|
spin_lock_irqsave(&local->lock, flags);
|
||
|
|
v = readw(hw_priv->mem_start + a);
|
||
|
|
prism2_io_debug_add(dev, PRISM2_IO_DEBUG_CMD_INW, a, v);
|
||
|
|
spin_unlock_irqrestore(&local->lock, flags);
|
||
|
|
return v;
|
||
|
|
}
|
||
|
|
|
||
|
|
#define HFA384X_OUTB(v,a) hfa384x_outb_debug(dev, (a), (v))
|
||
|
|
#define HFA384X_INB(a) hfa384x_inb_debug(dev, (a))
|
||
|
|
#define HFA384X_OUTW(v,a) hfa384x_outw_debug(dev, (a), (v))
|
||
|
|
#define HFA384X_INW(a) hfa384x_inw_debug(dev, (a))
|
||
|
|
#define HFA384X_OUTW_DATA(v,a) hfa384x_outw_debug(dev, (a), le16_to_cpu((v)))
|
||
|
|
#define HFA384X_INW_DATA(a) cpu_to_le16(hfa384x_inw_debug(dev, (a)))
|
||
|
|
|
||
|
|
#else /* PRISM2_IO_DEBUG */
|
||
|
|
|
||
|
|
static inline void hfa384x_outb(struct net_device *dev, int a, u8 v)
|
||
|
|
{
|
||
|
|
struct hostap_interface *iface;
|
||
|
|
struct hostap_pci_priv *hw_priv;
|
||
|
|
iface = netdev_priv(dev);
|
||
|
|
hw_priv = iface->local->hw_priv;
|
||
|
|
writeb(v, hw_priv->mem_start + a);
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline u8 hfa384x_inb(struct net_device *dev, int a)
|
||
|
|
{
|
||
|
|
struct hostap_interface *iface;
|
||
|
|
struct hostap_pci_priv *hw_priv;
|
||
|
|
iface = netdev_priv(dev);
|
||
|
|
hw_priv = iface->local->hw_priv;
|
||
|
|
return readb(hw_priv->mem_start + a);
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline void hfa384x_outw(struct net_device *dev, int a, u16 v)
|
||
|
|
{
|
||
|
|
struct hostap_interface *iface;
|
||
|
|
struct hostap_pci_priv *hw_priv;
|
||
|
|
iface = netdev_priv(dev);
|
||
|
|
hw_priv = iface->local->hw_priv;
|
||
|
|
writew(v, hw_priv->mem_start + a);
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline u16 hfa384x_inw(struct net_device *dev, int a)
|
||
|
|
{
|
||
|
|
struct hostap_interface *iface;
|
||
|
|
struct hostap_pci_priv *hw_priv;
|
||
|
|
iface = netdev_priv(dev);
|
||
|
|
hw_priv = iface->local->hw_priv;
|
||
|
|
return readw(hw_priv->mem_start + a);
|
||
|
|
}
|
||
|
|
|
||
|
|
#define HFA384X_OUTB(v,a) hfa384x_outb(dev, (a), (v))
|
||
|
|
#define HFA384X_INB(a) hfa384x_inb(dev, (a))
|
||
|
|
#define HFA384X_OUTW(v,a) hfa384x_outw(dev, (a), (v))
|
||
|
|
#define HFA384X_INW(a) hfa384x_inw(dev, (a))
|
||
|
|
#define HFA384X_OUTW_DATA(v,a) hfa384x_outw(dev, (a), le16_to_cpu((v)))
|
||
|
|
#define HFA384X_INW_DATA(a) cpu_to_le16(hfa384x_inw(dev, (a)))
|
||
|
|
|
||
|
|
#endif /* PRISM2_IO_DEBUG */
|
||
|
|
|
||
|
|
|
||
|
|
static int hfa384x_from_bap(struct net_device *dev, u16 bap, void *buf,
|
||
|
|
int len)
|
||
|
|
{
|
||
|
|
u16 d_off;
|
||
|
|
__le16 *pos;
|
||
|
|
|
||
|
|
d_off = (bap == 1) ? HFA384X_DATA1_OFF : HFA384X_DATA0_OFF;
|
||
|
|
pos = (__le16 *) buf;
|
||
|
|
|
||
|
|
for ( ; len > 1; len -= 2)
|
||
|
|
*pos++ = HFA384X_INW_DATA(d_off);
|
||
|
|
|
||
|
|
if (len & 1)
|
||
|
|
*((char *) pos) = HFA384X_INB(d_off);
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
static int hfa384x_to_bap(struct net_device *dev, u16 bap, void *buf, int len)
|
||
|
|
{
|
||
|
|
u16 d_off;
|
||
|
|
__le16 *pos;
|
||
|
|
|
||
|
|
d_off = (bap == 1) ? HFA384X_DATA1_OFF : HFA384X_DATA0_OFF;
|
||
|
|
pos = (__le16 *) buf;
|
||
|
|
|
||
|
|
for ( ; len > 1; len -= 2)
|
||
|
|
HFA384X_OUTW_DATA(*pos++, d_off);
|
||
|
|
|
||
|
|
if (len & 1)
|
||
|
|
HFA384X_OUTB(*((char *) pos), d_off);
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/* FIX: This might change at some point.. */
|
||
|
|
#include "hostap_hw.c"
|
||
|
|
|
||
|
|
static void prism2_pci_cor_sreset(local_info_t *local)
|
||
|
|
{
|
||
|
|
struct net_device *dev = local->dev;
|
||
|
|
u16 reg;
|
||
|
|
|
||
|
|
reg = HFA384X_INB(HFA384X_PCICOR_OFF);
|
||
|
|
printk(KERN_DEBUG "%s: Original COR value: 0x%0x\n", dev->name, reg);
|
||
|
|
|
||
|
|
/* linux-wlan-ng uses extremely long hold and settle times for
|
||
|
|
* COR sreset. A comment in the driver code mentions that the long
|
||
|
|
* delays appear to be necessary. However, at least IBM 22P6901 seems
|
||
|
|
* to work fine with shorter delays.
|
||
|
|
*
|
||
|
|
* Longer delays can be configured by uncommenting following line: */
|
||
|
|
/* #define PRISM2_PCI_USE_LONG_DELAYS */
|
||
|
|
|
||
|
|
#ifdef PRISM2_PCI_USE_LONG_DELAYS
|
||
|
|
int i;
|
||
|
|
|
||
|
|
HFA384X_OUTW(reg | 0x0080, HFA384X_PCICOR_OFF);
|
||
|
|
mdelay(250);
|
||
|
|
|
||
|
|
HFA384X_OUTW(reg & ~0x0080, HFA384X_PCICOR_OFF);
|
||
|
|
mdelay(500);
|
||
|
|
|
||
|
|
/* Wait for f/w to complete initialization (CMD:BUSY == 0) */
|
||
|
|
i = 2000000 / 10;
|
||
|
|
while ((HFA384X_INW(HFA384X_CMD_OFF) & HFA384X_CMD_BUSY) && --i)
|
||
|
|
udelay(10);
|
||
|
|
|
||
|
|
#else /* PRISM2_PCI_USE_LONG_DELAYS */
|
||
|
|
|
||
|
|
HFA384X_OUTW(reg | 0x0080, HFA384X_PCICOR_OFF);
|
||
|
|
mdelay(2);
|
||
|
|
HFA384X_OUTW(reg & ~0x0080, HFA384X_PCICOR_OFF);
|
||
|
|
mdelay(2);
|
||
|
|
|
||
|
|
#endif /* PRISM2_PCI_USE_LONG_DELAYS */
|
||
|
|
|
||
|
|
if (HFA384X_INW(HFA384X_CMD_OFF) & HFA384X_CMD_BUSY) {
|
||
|
|
printk(KERN_DEBUG "%s: COR sreset timeout\n", dev->name);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
static void prism2_pci_genesis_reset(local_info_t *local, int hcr)
|
||
|
|
{
|
||
|
|
struct net_device *dev = local->dev;
|
||
|
|
|
||
|
|
HFA384X_OUTW(0x00C5, HFA384X_PCICOR_OFF);
|
||
|
|
mdelay(10);
|
||
|
|
HFA384X_OUTW(hcr, HFA384X_PCIHCR_OFF);
|
||
|
|
mdelay(10);
|
||
|
|
HFA384X_OUTW(0x0045, HFA384X_PCICOR_OFF);
|
||
|
|
mdelay(10);
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
static struct prism2_helper_functions prism2_pci_funcs =
|
||
|
|
{
|
||
|
|
.card_present = NULL,
|
||
|
|
.cor_sreset = prism2_pci_cor_sreset,
|
||
|
|
.genesis_reset = prism2_pci_genesis_reset,
|
||
|
|
.hw_type = HOSTAP_HW_PCI,
|
||
|
|
};
|
||
|
|
|
||
|
|
|
||
|
|
static int prism2_pci_probe(struct pci_dev *pdev,
|
||
|
|
const struct pci_device_id *id)
|
||
|
|
{
|
||
|
|
unsigned long phymem;
|
||
|
|
void __iomem *mem = NULL;
|
||
|
|
local_info_t *local = NULL;
|
||
|
|
struct net_device *dev = NULL;
|
||
|
|
static int cards_found /* = 0 */;
|
||
|
|
int irq_registered = 0;
|
||
|
|
struct hostap_interface *iface;
|
||
|
|
struct hostap_pci_priv *hw_priv;
|
||
|
|
|
||
|
|
hw_priv = kzalloc(sizeof(*hw_priv), GFP_KERNEL);
|
||
|
|
if (hw_priv == NULL)
|
||
|
|
return -ENOMEM;
|
||
|
|
|
||
|
|
if (pci_enable_device(pdev))
|
||
|
|
goto err_out_free;
|
||
|
|
|
||
|
|
phymem = pci_resource_start(pdev, 0);
|
||
|
|
|
||
|
|
if (!request_mem_region(phymem, pci_resource_len(pdev, 0), "Prism2")) {
|
||
|
|
printk(KERN_ERR "prism2: Cannot reserve PCI memory region\n");
|
||
|
|
goto err_out_disable;
|
||
|
|
}
|
||
|
|
|
||
|
|
mem = pci_ioremap_bar(pdev, 0);
|
||
|
|
if (mem == NULL) {
|
||
|
|
printk(KERN_ERR "prism2: Cannot remap PCI memory region\n") ;
|
||
|
|
goto fail;
|
||
|
|
}
|
||
|
|
|
||
|
|
dev = prism2_init_local_data(&prism2_pci_funcs, cards_found,
|
||
|
|
&pdev->dev);
|
||
|
|
if (dev == NULL)
|
||
|
|
goto fail;
|
||
|
|
iface = netdev_priv(dev);
|
||
|
|
local = iface->local;
|
||
|
|
local->hw_priv = hw_priv;
|
||
|
|
cards_found++;
|
||
|
|
|
||
|
|
dev->irq = pdev->irq;
|
||
|
|
hw_priv->mem_start = mem;
|
||
|
|
dev->base_addr = (unsigned long) mem;
|
||
|
|
|
||
|
|
prism2_pci_cor_sreset(local);
|
||
|
|
|
||
|
|
pci_set_drvdata(pdev, dev);
|
||
|
|
|
||
|
|
if (request_irq(dev->irq, prism2_interrupt, IRQF_SHARED, dev->name,
|
||
|
|
dev)) {
|
||
|
|
printk(KERN_WARNING "%s: request_irq failed\n", dev->name);
|
||
|
|
goto fail;
|
||
|
|
} else
|
||
|
|
irq_registered = 1;
|
||
|
|
|
||
|
|
if (!local->pri_only && prism2_hw_config(dev, 1)) {
|
||
|
|
printk(KERN_DEBUG "%s: hardware initialization failed\n",
|
||
|
|
dev_info);
|
||
|
|
goto fail;
|
||
|
|
}
|
||
|
|
|
||
|
|
printk(KERN_INFO "%s: Intersil Prism2.5 PCI: "
|
||
|
|
"mem=0x%lx, irq=%d\n", dev->name, phymem, dev->irq);
|
||
|
|
|
||
|
|
return hostap_hw_ready(dev);
|
||
|
|
|
||
|
|
fail:
|
||
|
|
if (irq_registered && dev)
|
||
|
|
free_irq(dev->irq, dev);
|
||
|
|
|
||
|
|
if (mem)
|
||
|
|
iounmap(mem);
|
||
|
|
|
||
|
|
release_mem_region(phymem, pci_resource_len(pdev, 0));
|
||
|
|
|
||
|
|
err_out_disable:
|
||
|
|
pci_disable_device(pdev);
|
||
|
|
prism2_free_local_data(dev);
|
||
|
|
|
||
|
|
err_out_free:
|
||
|
|
kfree(hw_priv);
|
||
|
|
|
||
|
|
return -ENODEV;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
static void prism2_pci_remove(struct pci_dev *pdev)
|
||
|
|
{
|
||
|
|
struct net_device *dev;
|
||
|
|
struct hostap_interface *iface;
|
||
|
|
void __iomem *mem_start;
|
||
|
|
struct hostap_pci_priv *hw_priv;
|
||
|
|
|
||
|
|
dev = pci_get_drvdata(pdev);
|
||
|
|
iface = netdev_priv(dev);
|
||
|
|
hw_priv = iface->local->hw_priv;
|
||
|
|
|
||
|
|
/* Reset the hardware, and ensure interrupts are disabled. */
|
||
|
|
prism2_pci_cor_sreset(iface->local);
|
||
|
|
hfa384x_disable_interrupts(dev);
|
||
|
|
|
||
|
|
if (dev->irq)
|
||
|
|
free_irq(dev->irq, dev);
|
||
|
|
|
||
|
|
mem_start = hw_priv->mem_start;
|
||
|
|
prism2_free_local_data(dev);
|
||
|
|
kfree(hw_priv);
|
||
|
|
|
||
|
|
iounmap(mem_start);
|
||
|
|
|
||
|
|
release_mem_region(pci_resource_start(pdev, 0),
|
||
|
|
pci_resource_len(pdev, 0));
|
||
|
|
pci_disable_device(pdev);
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
#ifdef CONFIG_PM
|
||
|
|
static int prism2_pci_suspend(struct pci_dev *pdev, pm_message_t state)
|
||
|
|
{
|
||
|
|
struct net_device *dev = pci_get_drvdata(pdev);
|
||
|
|
|
||
|
|
if (netif_running(dev)) {
|
||
|
|
netif_stop_queue(dev);
|
||
|
|
netif_device_detach(dev);
|
||
|
|
}
|
||
|
|
prism2_suspend(dev);
|
||
|
|
pci_save_state(pdev);
|
||
|
|
pci_disable_device(pdev);
|
||
|
|
pci_set_power_state(pdev, PCI_D3hot);
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int prism2_pci_resume(struct pci_dev *pdev)
|
||
|
|
{
|
||
|
|
struct net_device *dev = pci_get_drvdata(pdev);
|
||
|
|
int err;
|
||
|
|
|
||
|
|
err = pci_enable_device(pdev);
|
||
|
|
if (err) {
|
||
|
|
printk(KERN_ERR "%s: pci_enable_device failed on resume\n",
|
||
|
|
dev->name);
|
||
|
|
return err;
|
||
|
|
}
|
||
|
|
pci_restore_state(pdev);
|
||
|
|
prism2_hw_config(dev, 0);
|
||
|
|
if (netif_running(dev)) {
|
||
|
|
netif_device_attach(dev);
|
||
|
|
netif_start_queue(dev);
|
||
|
|
}
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
#endif /* CONFIG_PM */
|
||
|
|
|
||
|
|
|
||
|
|
MODULE_DEVICE_TABLE(pci, prism2_pci_id_table);
|
||
|
|
|
||
|
|
static struct pci_driver prism2_pci_driver = {
|
||
|
|
.name = "hostap_pci",
|
||
|
|
.id_table = prism2_pci_id_table,
|
||
|
|
.probe = prism2_pci_probe,
|
||
|
|
.remove = prism2_pci_remove,
|
||
|
|
#ifdef CONFIG_PM
|
||
|
|
.suspend = prism2_pci_suspend,
|
||
|
|
.resume = prism2_pci_resume,
|
||
|
|
#endif /* CONFIG_PM */
|
||
|
|
};
|
||
|
|
|
||
|
|
module_pci_driver(prism2_pci_driver);
|