Add HostAP wireless driver.

Includes minor cleanups from Adrian Bunk <bunk@stusta.de>.

1 files changed, 620 insertions, 0 deletions

diff --git a/drivers/net/wireless/hostap/hostap_plx.c b/drivers/net/wireless/hostap/hostap_plx.c
new file mode 100644
index 000000000000..ec33501e094a
--- /dev/null
+++ b/drivers/net/wireless/hostap/hostap_plx.c
@@ -0,0 +1,620 @@
+#define PRISM2_PLX
+
+/* Host AP driver's support for PC Cards on PCI adapters using PLX9052 is
+ * based on:
+ * - Host AP driver patch from james@madingley.org
+ * - linux-wlan-ng driver, Copyright (C) AbsoluteValue Systems, Inc.
+ */
+
+
+#include <linux/config.h>
+#include <linux/version.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/if.h>
+#include <linux/skbuff.h>
+#include <linux/netdevice.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 *version = PRISM2_VERSION " (Jouni Malinen <jkmaline@cc.hut.fi>)";
+static char *dev_info = "hostap_plx";
+
+
+MODULE_AUTHOR("Jouni Malinen");
+MODULE_DESCRIPTION("Support for Intersil Prism2-based 802.11 wireless LAN "
+		   "cards (PLX).");
+MODULE_SUPPORTED_DEVICE("Intersil Prism2-based WLAN cards (PLX)");
+MODULE_LICENSE("GPL");
+
+
+static int ignore_cis;
+module_param(ignore_cis, int, 0444);
+MODULE_PARM_DESC(ignore_cis, "Do not verify manfid information in CIS");
+
+
+#define PLX_MIN_ATTR_LEN 512	/* at least 2 x 256 is needed for CIS */
+#define COR_SRESET       0x80
+#define COR_LEVLREQ      0x40
+#define COR_ENABLE_FUNC  0x01
+/* PCI Configuration Registers */
+#define PLX_PCIIPR       0x3d   /* PCI Interrupt Pin */
+/* Local Configuration Registers */
+#define PLX_INTCSR       0x4c   /* Interrupt Control/Status Register */
+#define PLX_INTCSR_PCI_INTEN BIT(6) /* PCI Interrupt Enable */
+#define PLX_CNTRL        0x50
+#define PLX_CNTRL_SERIAL_EEPROM_PRESENT BIT(28)
+
+
+#define PLXDEV(vendor,dev,str) { vendor, dev, PCI_ANY_ID, PCI_ANY_ID }
+
+static struct pci_device_id prism2_plx_id_table[] __devinitdata = {
+	PLXDEV(0x10b7, 0x7770, "3Com AirConnect PCI 777A"),
+	PLXDEV(0x111a, 0x1023, "Siemens SpeedStream SS1023"),
+	PLXDEV(0x126c, 0x8030, "Nortel emobility"),
+	PLXDEV(0x1385, 0x4100, "Netgear MA301"),
+	PLXDEV(0x15e8, 0x0130, "National Datacomm NCP130 (PLX9052)"),
+	PLXDEV(0x15e8, 0x0131, "National Datacomm NCP130 (TMD7160)"),
+	PLXDEV(0x1638, 0x1100, "Eumitcom WL11000"),
+	PLXDEV(0x16ab, 0x1101, "Global Sun Tech GL24110P (?)"),
+	PLXDEV(0x16ab, 0x1102, "Linksys WPC11 with WDT11"),
+	PLXDEV(0x16ab, 0x1103, "Longshine 8031"),
+	PLXDEV(0x16ec, 0x3685, "US Robotics USR2415"),
+	PLXDEV(0xec80, 0xec00, "Belkin F5D6000"),
+	{ 0 }
+};
+
+
+/* Array of known Prism2/2.5 PC Card manufactured ids. If your card's manfid
+ * is not listed here, you will need to add it here to get the driver
+ * initialized. */
+static struct prism2_plx_manfid {
+	u16 manfid1, manfid2;
+} prism2_plx_known_manfids[] = {
+	{ 0x000b, 0x7110 } /* D-Link DWL-650 Rev. P1 */,
+	{ 0x000b, 0x7300 } /* Philips 802.11b WLAN PCMCIA */,
+	{ 0x0101, 0x0777 } /* 3Com AirConnect PCI 777A */,
+	{ 0x0126, 0x8000 } /* Proxim RangeLAN */,
+	{ 0x0138, 0x0002 } /* Compaq WL100 */,
+	{ 0x0156, 0x0002 } /* Intersil Prism II Ref. Design (and others) */,
+	{ 0x026f, 0x030b } /* Buffalo WLI-CF-S11G */,
+	{ 0x0274, 0x1612 } /* Linksys WPC11 Ver 2.5 */,
+	{ 0x0274, 0x1613 } /* Linksys WPC11 Ver 3 */,
+	{ 0x028a, 0x0002 } /* D-Link DRC-650 */,
+	{ 0x0250, 0x0002 } /* Samsung SWL2000-N */,
+	{ 0xc250, 0x0002 } /* EMTAC A2424i */,
+	{ 0xd601, 0x0002 } /* Z-Com XI300 */,
+	{ 0xd601, 0x0005 } /* Zcomax XI-325H 200mW */,
+	{ 0, 0}
+};
+
+
+#ifdef PRISM2_IO_DEBUG
+
+static inline void hfa384x_outb_debug(struct net_device *dev, int a, u8 v)
+{
+	struct hostap_interface *iface;
+	local_info_t *local;
+	unsigned long flags;
+
+	iface = netdev_priv(dev);
+	local = iface->local;
+
+	spin_lock_irqsave(&local->lock, flags);
+	prism2_io_debug_add(dev, PRISM2_IO_DEBUG_CMD_OUTB, a, v);
+	outb(v, dev->base_addr + a);
+	spin_unlock_irqrestore(&local->lock, flags);
+}
+
+static inline u8 hfa384x_inb_debug(struct net_device *dev, int a)
+{
+	struct hostap_interface *iface;
+	local_info_t *local;
+	unsigned long flags;
+	u8 v;
+
+	iface = netdev_priv(dev);
+	local = iface->local;
+
+	spin_lock_irqsave(&local->lock, flags);
+	v = inb(dev->base_addr + 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;
+	local_info_t *local;
+	unsigned long flags;
+
+	iface = netdev_priv(dev);
+	local = iface->local;
+
+	spin_lock_irqsave(&local->lock, flags);
+	prism2_io_debug_add(dev, PRISM2_IO_DEBUG_CMD_OUTW, a, v);
+	outw(v, dev->base_addr + a);
+	spin_unlock_irqrestore(&local->lock, flags);
+}
+
+static inline u16 hfa384x_inw_debug(struct net_device *dev, int a)
+{
+	struct hostap_interface *iface;
+	local_info_t *local;
+	unsigned long flags;
+	u16 v;
+
+	iface = netdev_priv(dev);
+	local = iface->local;
+
+	spin_lock_irqsave(&local->lock, flags);
+	v = inw(dev->base_addr + a);
+	prism2_io_debug_add(dev, PRISM2_IO_DEBUG_CMD_INW, a, v);
+	spin_unlock_irqrestore(&local->lock, flags);
+	return v;
+}
+
+static inline void hfa384x_outsw_debug(struct net_device *dev, int a,
+				       u8 *buf, int wc)
+{
+	struct hostap_interface *iface;
+	local_info_t *local;
+	unsigned long flags;
+
+	iface = netdev_priv(dev);
+	local = iface->local;
+
+	spin_lock_irqsave(&local->lock, flags);
+	prism2_io_debug_add(dev, PRISM2_IO_DEBUG_CMD_OUTSW, a, wc);
+	outsw(dev->base_addr + a, buf, wc);
+	spin_unlock_irqrestore(&local->lock, flags);
+}
+
+static inline void hfa384x_insw_debug(struct net_device *dev, int a,
+				      u8 *buf, int wc)
+{
+	struct hostap_interface *iface;
+	local_info_t *local;
+	unsigned long flags;
+
+	iface = netdev_priv(dev);
+	local = iface->local;
+
+	spin_lock_irqsave(&local->lock, flags);
+	prism2_io_debug_add(dev, PRISM2_IO_DEBUG_CMD_INSW, a, wc);
+	insw(dev->base_addr + a, buf, wc);
+	spin_unlock_irqrestore(&local->lock, flags);
+}
+
+#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_OUTSW(a, buf, wc) hfa384x_outsw_debug(dev, (a), (buf), (wc))
+#define HFA384X_INSW(a, buf, wc) hfa384x_insw_debug(dev, (a), (buf), (wc))
+
+#else /* PRISM2_IO_DEBUG */
+
+#define HFA384X_OUTB(v,a) outb((v), dev->base_addr + (a))
+#define HFA384X_INB(a) inb(dev->base_addr + (a))
+#define HFA384X_OUTW(v,a) outw((v), dev->base_addr + (a))
+#define HFA384X_INW(a) inw(dev->base_addr + (a))
+#define HFA384X_INSW(a, buf, wc) insw(dev->base_addr + (a), buf, wc)
+#define HFA384X_OUTSW(a, buf, wc) outsw(dev->base_addr + (a), buf, wc)
+
+#endif /* PRISM2_IO_DEBUG */
+
+
+static int hfa384x_from_bap(struct net_device *dev, u16 bap, void *buf,
+			    int len)
+{
+	u16 d_off;
+	u16 *pos;
+
+	d_off = (bap == 1) ? HFA384X_DATA1_OFF : HFA384X_DATA0_OFF;
+	pos = (u16 *) buf;
+
+	if (len / 2)
+		HFA384X_INSW(d_off, buf, len / 2);
+	pos += len / 2;
+
+	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;
+	u16 *pos;
+
+	d_off = (bap == 1) ? HFA384X_DATA1_OFF : HFA384X_DATA0_OFF;
+	pos = (u16 *) buf;
+
+	if (len / 2)
+		HFA384X_OUTSW(d_off, buf, len / 2);
+	pos += len / 2;
+
+	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_plx_cor_sreset(local_info_t *local)
+{
+	unsigned char corsave;
+
+	printk(KERN_DEBUG "%s: Doing reset via direct COR access.\n",
+	       dev_info);
+
+	/* Set sreset bit of COR and clear it after hold time */
+
+	if (local->attr_mem == NULL) {
+		/* TMD7160 - COR at card's first I/O addr */
+		corsave = inb(local->cor_offset);
+		outb(corsave | COR_SRESET, local->cor_offset);
+		mdelay(2);
+		outb(corsave & ~COR_SRESET, local->cor_offset);
+		mdelay(2);
+	} else {
+		/* PLX9052 */
+		corsave = readb(local->attr_mem + local->cor_offset);
+		writeb(corsave | COR_SRESET,
+		       local->attr_mem + local->cor_offset);
+		mdelay(2);
+		writeb(corsave & ~COR_SRESET,
+		       local->attr_mem + local->cor_offset);
+		mdelay(2);
+	}
+}
+
+
+static void prism2_plx_genesis_reset(local_info_t *local, int hcr)
+{
+	unsigned char corsave;
+
+	if (local->attr_mem == NULL) {
+		/* TMD7160 - COR at card's first I/O addr */
+		corsave = inb(local->cor_offset);
+		outb(corsave | COR_SRESET, local->cor_offset);
+		mdelay(10);
+		outb(hcr, local->cor_offset + 2);
+		mdelay(10);
+		outb(corsave & ~COR_SRESET, local->cor_offset);
+		mdelay(10);
+	} else {
+		/* PLX9052 */
+		corsave = readb(local->attr_mem + local->cor_offset);
+		writeb(corsave | COR_SRESET,
+		       local->attr_mem + local->cor_offset);
+		mdelay(10);
+		writeb(hcr, local->attr_mem + local->cor_offset + 2);
+		mdelay(10);
+		writeb(corsave & ~COR_SRESET,
+		       local->attr_mem + local->cor_offset);
+		mdelay(10);
+	}
+}
+
+
+static struct prism2_helper_functions prism2_plx_funcs =
+{
+	.card_present	= NULL,
+	.cor_sreset	= prism2_plx_cor_sreset,
+	.dev_open	= NULL,
+	.dev_close	= NULL,
+	.genesis_reset	= prism2_plx_genesis_reset,
+	.hw_type	= HOSTAP_HW_PLX,
+};
+
+
+static int prism2_plx_check_cis(void __iomem *attr_mem, int attr_len,
+				unsigned int *cor_offset,
+				unsigned int *cor_index)
+{
+#define CISTPL_CONFIG 0x1A
+#define CISTPL_MANFID 0x20
+#define CISTPL_END 0xFF
+#define CIS_MAX_LEN 256
+	u8 *cis;
+	int i, pos;
+	unsigned int rmsz, rasz, manfid1, manfid2;
+	struct prism2_plx_manfid *manfid;
+
+	cis = kmalloc(CIS_MAX_LEN, GFP_KERNEL);
+	if (cis == NULL)
+		return -ENOMEM;
+
+	/* read CIS; it is in even offsets in the beginning of attr_mem */
+	for (i = 0; i < CIS_MAX_LEN; i++)
+		cis[i] = readb(attr_mem + 2 * i);
+	printk(KERN_DEBUG "%s: CIS: %02x %02x %02x %02x %02x %02x ...\n",
+	       dev_info, cis[0], cis[1], cis[2], cis[3], cis[4], cis[5]);
+
+	/* set reasonable defaults for Prism2 cards just in case CIS parsing
+	 * fails */
+	*cor_offset = 0x3e0;
+	*cor_index = 0x01;
+	manfid1 = manfid2 = 0;
+
+	pos = 0;
+	while (pos < CIS_MAX_LEN - 1 && cis[pos] != CISTPL_END) {
+		if (pos + cis[pos + 1] >= CIS_MAX_LEN)
+			goto cis_error;
+
+		switch (cis[pos]) {
+		case CISTPL_CONFIG:
+			if (cis[pos + 1] < 1)
+				goto cis_error;
+			rmsz = (cis[pos + 2] & 0x3c) >> 2;
+			rasz = cis[pos + 2] & 0x03;
+			if (4 + rasz + rmsz > cis[pos + 1])
+				goto cis_error;
+			*cor_index = cis[pos + 3] & 0x3F;
+			*cor_offset = 0;
+			for (i = 0; i <= rasz; i++)
+				*cor_offset += cis[pos + 4 + i] << (8 * i);
+			printk(KERN_DEBUG "%s: cor_index=0x%x "
+			       "cor_offset=0x%x\n", dev_info,
+			       *cor_index, *cor_offset);
+			if (*cor_offset > attr_len) {
+				printk(KERN_ERR "%s: COR offset not within "
+				       "attr_mem\n", dev_info);
+				kfree(cis);
+				return -1;
+			}
+			break;
+
+		case CISTPL_MANFID:
+			if (cis[pos + 1] < 4)
+				goto cis_error;
+			manfid1 = cis[pos + 2] + (cis[pos + 3] << 8);
+			manfid2 = cis[pos + 4] + (cis[pos + 5] << 8);
+			printk(KERN_DEBUG "%s: manfid=0x%04x, 0x%04x\n",
+			       dev_info, manfid1, manfid2);
+			break;
+		}
+
+		pos += cis[pos + 1] + 2;
+	}
+
+	if (pos >= CIS_MAX_LEN || cis[pos] != CISTPL_END)
+		goto cis_error;
+
+	for (manfid = prism2_plx_known_manfids; manfid->manfid1 != 0; manfid++)
+		if (manfid1 == manfid->manfid1 && manfid2 == manfid->manfid2) {
+			kfree(cis);
+			return 0;
+		}
+
+	printk(KERN_INFO "%s: unknown manfid 0x%04x, 0x%04x - assuming this is"
+	       " not supported card\n", dev_info, manfid1, manfid2);
+	goto fail;
+
+ cis_error:
+	printk(KERN_WARNING "%s: invalid CIS data\n", dev_info);
+
+ fail:
+	kfree(cis);
+	if (ignore_cis) {
+		printk(KERN_INFO "%s: ignore_cis parameter set - ignoring "
+		       "errors during CIS verification\n", dev_info);
+		return 0;
+	}
+	return -1;
+}
+
+
+static int prism2_plx_probe(struct pci_dev *pdev,
+			    const struct pci_device_id *id)
+{
+	unsigned int pccard_ioaddr, plx_ioaddr;
+	unsigned long pccard_attr_mem;
+	unsigned int pccard_attr_len;
+	void __iomem *attr_mem = NULL;
+	unsigned int cor_offset, cor_index;
+	u32 reg;
+	local_info_t *local = NULL;
+	struct net_device *dev = NULL;
+	struct hostap_interface *iface;
+	static int cards_found /* = 0 */;
+	int irq_registered = 0;
+	int tmd7160;
+
+	if (pci_enable_device(pdev))
+		return -EIO;
+
+	/* National Datacomm NCP130 based on TMD7160, not PLX9052. */
+	tmd7160 = (pdev->vendor == 0x15e8) && (pdev->device == 0x0131);
+
+	plx_ioaddr = pci_resource_start(pdev, 1);
+	pccard_ioaddr = pci_resource_start(pdev, tmd7160 ? 2 : 3);
+
+	if (tmd7160) {
+		/* TMD7160 */
+		attr_mem = NULL; /* no access to PC Card attribute memory */
+
+		printk(KERN_INFO "TMD7160 PCI/PCMCIA adapter: io=0x%x, "
+		       "irq=%d, pccard_io=0x%x\n",
+		       plx_ioaddr, pdev->irq, pccard_ioaddr);
+
+		cor_offset = plx_ioaddr;
+		cor_index = 0x04;
+
+		outb(cor_index | COR_LEVLREQ | COR_ENABLE_FUNC, plx_ioaddr);
+		mdelay(1);
+		reg = inb(plx_ioaddr);
+		if (reg != (cor_index | COR_LEVLREQ | COR_ENABLE_FUNC)) {
+			printk(KERN_ERR "%s: Error setting COR (expected="
+			       "0x%02x, was=0x%02x)\n", dev_info,
+			       cor_index | COR_LEVLREQ | COR_ENABLE_FUNC, reg);
+			goto fail;
+		}
+	} else {
+		/* PLX9052 */
+		pccard_attr_mem = pci_resource_start(pdev, 2);
+		pccard_attr_len = pci_resource_len(pdev, 2);
+		if (pccard_attr_len < PLX_MIN_ATTR_LEN)
+			goto fail;
+
+
+		attr_mem = ioremap(pccard_attr_mem, pccard_attr_len);
+		if (attr_mem == NULL) {
+			printk(KERN_ERR "%s: cannot remap attr_mem\n",
+			       dev_info);
+			goto fail;
+		}
+
+		printk(KERN_INFO "PLX9052 PCI/PCMCIA adapter: "
+		       "mem=0x%lx, plx_io=0x%x, irq=%d, pccard_io=0x%x\n",
+		       pccard_attr_mem, plx_ioaddr, pdev->irq, pccard_ioaddr);
+
+		if (prism2_plx_check_cis(attr_mem, pccard_attr_len,
+					 &cor_offset, &cor_index)) {
+			printk(KERN_INFO "Unknown PC Card CIS - not a "
+			       "Prism2/2.5 card?\n");
+			goto fail;
+		}
+
+		printk(KERN_DEBUG "Prism2/2.5 PC Card detected in PLX9052 "
+		       "adapter\n");
+
+		/* Write COR to enable PC Card */
+		writeb(cor_index | COR_LEVLREQ | COR_ENABLE_FUNC,
+		       attr_mem + cor_offset);
+
+		/* Enable PCI interrupts if they are not already enabled */
+		reg = inl(plx_ioaddr + PLX_INTCSR);
+		printk(KERN_DEBUG "PLX_INTCSR=0x%x\n", reg);
+		if (!(reg & PLX_INTCSR_PCI_INTEN)) {
+			outl(reg | PLX_INTCSR_PCI_INTEN,
+			     plx_ioaddr + PLX_INTCSR);
+			if (!(inl(plx_ioaddr + PLX_INTCSR) &
+			      PLX_INTCSR_PCI_INTEN)) {
+				printk(KERN_WARNING "%s: Could not enable "
+				       "Local Interrupts\n", dev_info);
+				goto fail;
+			}
+		}
+
+		reg = inl(plx_ioaddr + PLX_CNTRL);
+		printk(KERN_DEBUG "PLX_CNTRL=0x%x (Serial EEPROM "
+		       "present=%d)\n",
+		       reg, (reg & PLX_CNTRL_SERIAL_EEPROM_PRESENT) != 0);
+		/* should set PLX_PCIIPR to 0x01 (INTA#) if Serial EEPROM is
+		 * not present; but are there really such cards in use(?) */
+	}
+
+	dev = prism2_init_local_data(&prism2_plx_funcs, cards_found);
+	if (dev == NULL)
+		goto fail;
+	iface = netdev_priv(dev);
+	local = iface->local;
+	cards_found++;
+
+	dev->irq = pdev->irq;
+	dev->base_addr = pccard_ioaddr;
+	local->attr_mem = attr_mem;
+	local->cor_offset = cor_offset;
+
+	pci_set_drvdata(pdev, dev);
+
+	if (request_irq(dev->irq, prism2_interrupt, SA_SHIRQ, dev->name,
+			dev)) {
+		printk(KERN_WARNING "%s: request_irq failed\n", dev->name);
+		goto fail;
+	} else
+		irq_registered = 1;
+
+	if (prism2_hw_config(dev, 1)) {
+		printk(KERN_DEBUG "%s: hardware initialization failed\n",
+		       dev_info);
+		goto fail;
+	}
+
+	return hostap_hw_ready(dev);
+
+ fail:
+	prism2_free_local_data(dev);
+
+	if (irq_registered && dev)
+		free_irq(dev->irq, dev);
+
+	if (attr_mem)
+		iounmap(attr_mem);
+
+	pci_disable_device(pdev);
+
+	return -ENODEV;
+}
+
+
+static void prism2_plx_remove(struct pci_dev *pdev)
+{
+	struct net_device *dev;
+	struct hostap_interface *iface;
+
+	dev = pci_get_drvdata(pdev);
+	iface = netdev_priv(dev);
+
+	/* Reset the hardware, and ensure interrupts are disabled. */
+	prism2_plx_cor_sreset(iface->local);
+	hfa384x_disable_interrupts(dev);
+
+	if (iface->local->attr_mem)
+		iounmap(iface->local->attr_mem);
+	if (dev->irq)
+		free_irq(dev->irq, dev);
+
+	prism2_free_local_data(dev);
+	pci_disable_device(pdev);
+}
+
+
+MODULE_DEVICE_TABLE(pci, prism2_plx_id_table);
+
+static struct pci_driver prism2_plx_drv_id = {
+	.name		= "prism2_plx",
+	.id_table	= prism2_plx_id_table,
+	.probe		= prism2_plx_probe,
+	.remove		= prism2_plx_remove,
+	.suspend	= NULL,
+	.resume		= NULL,
+	.enable_wake	= NULL
+};
+
+
+static int __init init_prism2_plx(void)
+{
+	printk(KERN_INFO "%s: %s\n", dev_info, version);
+
+	return pci_register_driver(&prism2_plx_drv_id);
+}
+
+
+static void __exit exit_prism2_plx(void)
+{
+	pci_unregister_driver(&prism2_plx_drv_id);
+	printk(KERN_INFO "%s: Driver unloaded\n", dev_info);
+}
+
+
+module_init(init_prism2_plx);
+module_exit(exit_prism2_plx);