Example #1
0
/*
 * Do a soft reset of the card using the Configuration Option Register
 */
static int orinoco_plx_cor_reset(struct orinoco_private *priv)
{
	hermes_t *hw = &priv->hw;
	struct orinoco_plx_card *card = priv->card;
	u8 __iomem *attr_mem = card->attr_mem;
	unsigned long timeout;
	u16 reg;

	writeb(COR_VALUE | COR_RESET, attr_mem + COR_OFFSET);
	mdelay(1);

	writeb(COR_VALUE, attr_mem + COR_OFFSET);
	mdelay(1);

	/* Just in case, wait more until the card is no longer busy */
	timeout = jiffies + (PLX_RESET_TIME * HZ / 1000);
	reg = hermes_read_regn(hw, CMD);
	while (time_before(jiffies, timeout) && (reg & HERMES_CMD_BUSY)) {
		mdelay(1);
		reg = hermes_read_regn(hw, CMD);
	}

	/* Did we timeout ? */
	if (reg & HERMES_CMD_BUSY) {
		printk(KERN_ERR PFX "Busy timeout\n");
		return -ETIMEDOUT;
	}

	return 0;
}
static int hermes_init(struct hermes *hw)
{
	u16 reg;
	int err = 0;
	int k;

	
	hw->inten = 0x0;
	hermes_write_regn(hw, INTEN, 0);
	hermes_write_regn(hw, EVACK, 0xffff);

	k = CMD_BUSY_TIMEOUT;
	reg = hermes_read_regn(hw, CMD);
	while (k && (reg & HERMES_CMD_BUSY)) {
		if (reg == 0xffff) 
			return -ENODEV;

		k--;
		udelay(1);
		reg = hermes_read_regn(hw, CMD);
	}


	reg = hermes_read_regn(hw, EVSTAT);
	hermes_write_regn(hw, EVACK, reg);

	err = hermes_doicmd_wait(hw, HERMES_CMD_INIT, 0, 0, 0, NULL);

	return err;
}
Example #3
0
/*
 * Do a soft reset of the card using the Configuration Option Register
 * We need this to get going...
 * This is the part of the code that is strongly inspired from wlan-ng
 *
 * Note : This code is done with irq enabled. This mean that many
 * interrupts will occur while we are there. This is why we use the
 * jiffies to regulate time instead of a straight mdelay(). Usually we
 * need only around 245 iteration of the loop to do 250 ms delay.
 *
 * Note bis : Don't try to access HERMES_CMD during the reset phase.
 * It just won't work !
 */
static int orinoco_pci_cor_reset(struct orinoco_private *priv)
{
	struct hermes *hw = &priv->hw;
	unsigned long timeout;
	u16 reg;

	/* Assert the reset until the card notices */
	hermes_write_regn(hw, PCI_COR, HERMES_PCI_COR_MASK);
	mdelay(HERMES_PCI_COR_ONT);

	/* Give time for the card to recover from this hard effort */
	hermes_write_regn(hw, PCI_COR, 0x0000);
	mdelay(HERMES_PCI_COR_OFFT);

	/* The card is ready when it's no longer busy */
	timeout = jiffies + msecs_to_jiffies(HERMES_PCI_COR_BUSYT);
	reg = hermes_read_regn(hw, CMD);
	while (time_before(jiffies, timeout) && (reg & HERMES_CMD_BUSY)) {
		mdelay(1);
		reg = hermes_read_regn(hw, CMD);
	}

	/* Still busy? */
	if (reg & HERMES_CMD_BUSY) {
		printk(KERN_ERR PFX "Busy timeout\n");
		return -ETIMEDOUT;
	}

	return 0;
}
Example #4
0
/*
 * Do a soft reset of the card using the Configuration Option Register
 */
static int orinoco_plx_cor_reset(struct orinoco_private *priv)
{
	struct hermes *hw = &priv->hw;
	struct orinoco_pci_card *card = priv->card;
	unsigned long timeout;
	u16 reg;

	iowrite8(COR_VALUE | COR_RESET, card->attr_io + COR_OFFSET);
	mdelay(1);

	iowrite8(COR_VALUE, card->attr_io + COR_OFFSET);
	mdelay(1);

	/* Just in case, wait more until the card is no longer busy */
	timeout = jiffies + msecs_to_jiffies(PLX_RESET_TIME);
	reg = hermes_read_regn(hw, CMD);
	while (time_before(jiffies, timeout) && (reg & HERMES_CMD_BUSY)) {
		mdelay(1);
		reg = hermes_read_regn(hw, CMD);
	}

	/* Still busy? */
	if (reg & HERMES_CMD_BUSY) {
		printk(KERN_ERR PFX "Busy timeout\n");
		return -ETIMEDOUT;
	}

	return 0;
}
Example #5
0
/*
 * Do a soft reset of the card using the Configuration Option Register
 */
static int orinoco_tmd_cor_reset(struct orinoco_private *priv)
{
	hermes_t *hw = &priv->hw;
	struct orinoco_pci_card *card = priv->card;
	unsigned long timeout;
	u16 reg;

	iowrite8(COR_VALUE | COR_RESET, card->bridge_io);
	mdelay(1);

	iowrite8(COR_VALUE, card->bridge_io);
	mdelay(1);

	/* Just in case, wait more until the card is no longer busy */
	timeout = jiffies + (TMD_RESET_TIME * HZ / 1000);
	reg = hermes_read_regn(hw, CMD);
	while (time_before(jiffies, timeout) && (reg & HERMES_CMD_BUSY)) {
		mdelay(1);
		reg = hermes_read_regn(hw, CMD);
	}

	/* Still busy? */
	if (reg & HERMES_CMD_BUSY) {
;
		return -ETIMEDOUT;
	}

	return 0;
}
static int orinoco_pci_cor_reset(struct orinoco_private *priv)
{
	struct hermes *hw = &priv->hw;
	unsigned long timeout;
	u16 reg;

	/*                                         */
	hermes_write_regn(hw, PCI_COR, HERMES_PCI_COR_MASK);
	mdelay(HERMES_PCI_COR_ONT);

	/*                                                         */
	hermes_write_regn(hw, PCI_COR, 0x0000);
	mdelay(HERMES_PCI_COR_OFFT);

	/*                                            */
	timeout = jiffies + (HERMES_PCI_COR_BUSYT * HZ / 1000);
	reg = hermes_read_regn(hw, CMD);
	while (time_before(jiffies, timeout) && (reg & HERMES_CMD_BUSY)) {
		mdelay(1);
		reg = hermes_read_regn(hw, CMD);
	}

	/*             */
	if (reg & HERMES_CMD_BUSY) {
		printk(KERN_ERR PFX "Busy timeout\n");
		return -ETIMEDOUT;
	}

	return 0;
}
Example #7
0
/*
 * Do a soft reset of the PCI card using the Configuration Option Register
 * We need this to get going...
 * This is the part of the code that is strongly inspired from wlan-ng
 *
 * Note : This code is done with irq enabled. This mean that many
 * interrupts will occur while we are there. This is why we use the
 * jiffies to regulate time instead of a straight mdelay(). Usually we
 * need only around 245 iteration of the loop to do 250 ms delay.
 *
 * Note bis : Don't try to access HERMES_CMD during the reset phase.
 * It just won't work !
 */
static int
orinoco_pci_cor_reset(struct orinoco_private *priv)
{
	hermes_t *hw = &priv->hw;
	unsigned long	timeout;
	u16	reg;

	/* Assert the reset until the card notice */
	hermes_write_regn(hw, PCI_COR, HERMES_PCI_COR_MASK);
	printk(KERN_NOTICE "Reset done");
	timeout = jiffies + (HERMES_PCI_COR_ONT * HZ / 1000);
	while(time_before(jiffies, timeout)) {
		printk(".");
		mdelay(1);
	}
	printk(";\n");
	//mdelay(HERMES_PCI_COR_ONT);

	/* Give time for the card to recover from this hard effort */
	hermes_write_regn(hw, PCI_COR, 0x0000);
	printk(KERN_NOTICE "Clear Reset");
	timeout = jiffies + (HERMES_PCI_COR_OFFT * HZ / 1000);
	while(time_before(jiffies, timeout)) {
		printk(".");
		mdelay(1);
	}
	printk(";\n");
	//mdelay(HERMES_PCI_COR_OFFT);

	/* The card is ready when it's no longer busy */
	timeout = jiffies + (HERMES_PCI_COR_BUSYT * HZ / 1000);
	reg = hermes_read_regn(hw, CMD);
	while (time_before(jiffies, timeout) && (reg & HERMES_CMD_BUSY)) {
		mdelay(1);
		reg = hermes_read_regn(hw, CMD);
	}
	/* Did we timeout ? */
	if(time_after_eq(jiffies, timeout)) {
		printk(KERN_ERR "orinoco_pci: Busy timeout\n");
		return -ETIMEDOUT;
	}
	printk(KERN_NOTICE "pci_cor : reg = 0x%X - %lX - %lX\n", reg, timeout, jiffies);

	return 0;
}
Example #8
0
int hermes_init(hermes_t *hw)
{
	u16 reg;
	int err = 0;
	int k;

	/* We don't want to be interrupted while resetting the chipset */
	hw->inten = 0x0;
	hermes_write_regn(hw, INTEN, 0);
	hermes_write_regn(hw, EVACK, 0xffff);

	/* Normally it's a "can't happen" for the command register to
           be busy when we go to issue a command because we are
           serializing all commands.  However we want to have some
           chance of resetting the card even if it gets into a stupid
           state, so we actually wait to see if the command register
           will unbusy itself here. */
	k = CMD_BUSY_TIMEOUT;
	reg = hermes_read_regn(hw, CMD);
	while (k && (reg & HERMES_CMD_BUSY)) {
		if (reg == 0xffff) /* Special case - the card has probably been removed,
				      so don't wait for the timeout */
			return -ENODEV;

		k--;
		udelay(1);
		reg = hermes_read_regn(hw, CMD);
	}
	
	/* No need to explicitly handle the timeout - if we've timed
	   out hermes_issue_cmd() will probably return -EBUSY below */

	/* According to the documentation, EVSTAT may contain
	   obsolete event occurrence information.  We have to acknowledge
	   it by writing EVACK. */
	reg = hermes_read_regn(hw, EVSTAT);
	hermes_write_regn(hw, EVACK, reg);

	/* We don't use hermes_docmd_wait here, because the reset wipes
	   the magic constant in SWSUPPORT0 away, and it gets confused */
	err = hermes_doicmd_wait(hw, HERMES_CMD_INIT, 0, 0, 0, NULL);

	return err;
}
Example #9
0
int hermes_allocate(hermes_t *hw, u16 size, u16 *fid)
{
	int err = 0;
	hermes_response_t resp;
	int k;
	u16 reg;
	
	if ( (size < HERMES_ALLOC_LEN_MIN) || (size > HERMES_ALLOC_LEN_MAX) )
		return -EINVAL;

	err = hermes_docmd_wait(hw, HERMES_CMD_ALLOC, size, &resp);
	if (err) {
		printk(KERN_WARNING "hermes @ 0x%x: Frame allocation command failed (0x%X).\n",
		       hw->iobase, err);
		return err;
	}

	reg = hermes_read_regn(hw, EVSTAT);
	k = ALLOC_COMPL_TIMEOUT;
	while ( (! (reg & HERMES_EV_ALLOC)) && k) {
		k--;
		udelay(10);
		reg = hermes_read_regn(hw, EVSTAT);
	}
	
	if (! hermes_present(hw)) {
		printk(KERN_WARNING "hermes @ 0x%x: Card removed waiting for frame allocation.\n",
		       hw->iobase);
		return -ENODEV;
	}
		
	if (! (reg & HERMES_EV_ALLOC)) {
		printk(KERN_ERR "hermes @ 0x%x: Timeout waiting for frame allocation\n",
		       hw->iobase);
		return -ETIMEDOUT;
	}

	*fid = hermes_read_regn(hw, ALLOCFID);
	hermes_write_regn(hw, EVACK, HERMES_EV_ALLOC);
	
	return 0;
}
static int hermes_allocate(struct hermes *hw, u16 size, u16 *fid)
{
	int err = 0;
	int k;
	u16 reg;

	if ((size < HERMES_ALLOC_LEN_MIN) || (size > HERMES_ALLOC_LEN_MAX))
		return -EINVAL;

	err = hermes_docmd_wait(hw, HERMES_CMD_ALLOC, size, NULL);
	if (err)
		return err;

	reg = hermes_read_regn(hw, EVSTAT);
	k = ALLOC_COMPL_TIMEOUT;
	while ((!(reg & HERMES_EV_ALLOC)) && k) {
		k--;
		udelay(10);
		reg = hermes_read_regn(hw, EVSTAT);
	}

	if (!hermes_present(hw)) {
		printk(KERN_WARNING "hermes @ %p: "
		       "Card removed waiting for frame allocation.\n",
		       hw->iobase);
		return -ENODEV;
	}

	if (!(reg & HERMES_EV_ALLOC)) {
		printk(KERN_ERR "hermes @ %p: "
		       "Timeout waiting for frame allocation\n",
		       hw->iobase);
		return -ETIMEDOUT;
	}

	*fid = hermes_read_regn(hw, ALLOCFID);
	hermes_write_regn(hw, EVACK, HERMES_EV_ALLOC);

	return 0;
}
Example #11
0
/* Issue a command to the chip, and (busy!) wait for it to
 * complete.
 *
 * Returns: < 0 on internal error, 0 on success, > 0 on error returned by the firmware
 *
 * Callable from any context, but locking is your problem. */
int hermes_docmd_wait(hermes_t *hw, u16 cmd, u16 parm0, hermes_response_t *resp)
{
	int err;
	int k;
	u16 reg;
	u16 status;

	err = hermes_issue_cmd(hw, cmd, parm0);
	if (err) {
		if (! hermes_present(hw)) {
			printk(KERN_WARNING "hermes @ %s0x%lx: "
			       "Card removed while issuing command.\n",
			       IO_TYPE(hw), hw->iobase);
			err = -ENODEV;
		} else 
			printk(KERN_ERR "hermes @ %s0x%lx: Error %d issuing command.\n",
			       IO_TYPE(hw), hw->iobase, err);
		goto out;
	}

	reg = hermes_read_regn(hw, EVSTAT);
	k = CMD_COMPL_TIMEOUT;
	while ( (! (reg & HERMES_EV_CMD)) && k) {
		k--;
		udelay(10);
		reg = hermes_read_regn(hw, EVSTAT);
	}

	if (! hermes_present(hw)) {
		printk(KERN_WARNING "hermes @ %s0x%lx: "
		       "Card removed while waiting for command completion.\n",
		       IO_TYPE(hw), hw->iobase);
		err = -ENODEV;
		goto out;
	}
		
	if (! (reg & HERMES_EV_CMD)) {
		printk(KERN_ERR "hermes @ %s0x%lx: "
		       "Timeout waiting for command completion.\n",
		       IO_TYPE(hw), hw->iobase);
		err = -ETIMEDOUT;
		goto out;
	}

	status = hermes_read_regn(hw, STATUS);
	if (resp) {
		resp->status = status;
		resp->resp0 = hermes_read_regn(hw, RESP0);
		resp->resp1 = hermes_read_regn(hw, RESP1);
		resp->resp2 = hermes_read_regn(hw, RESP2);
	}

	hermes_write_regn(hw, EVACK, HERMES_EV_CMD);

	if (status & HERMES_STATUS_RESULT)
		err = -EIO;

 out:
	return err;
}
Example #12
0
/* Issue a command to the chip. Waiting for it to complete is the caller's
   problem.

   Returns -EBUSY if the command register is busy, 0 on success.

   Callable from any context.
*/
static int hermes_issue_cmd(hermes_t *hw, u16 cmd, u16 param0)
{
	int k = CMD_BUSY_TIMEOUT;
	u16 reg;

	/* First wait for the command register to unbusy */
	reg = hermes_read_regn(hw, CMD);
	while ( (reg & HERMES_CMD_BUSY) && k ) {
		k--;
		udelay(1);
		reg = hermes_read_regn(hw, CMD);
	}
	if (reg & HERMES_CMD_BUSY) {
		return -EBUSY;
	}

	hermes_write_regn(hw, PARAM2, 0);
	hermes_write_regn(hw, PARAM1, 0);
	hermes_write_regn(hw, PARAM0, param0);
	hermes_write_regn(hw, CMD, cmd);
	
	return 0;
}
static int hermes_issue_cmd(struct hermes *hw, u16 cmd, u16 param0,
			    u16 param1, u16 param2)
{
	int k = CMD_BUSY_TIMEOUT;
	u16 reg;

	
	reg = hermes_read_regn(hw, CMD);
	while ((reg & HERMES_CMD_BUSY) && k) {
		k--;
		udelay(1);
		reg = hermes_read_regn(hw, CMD);
	}
	if (reg & HERMES_CMD_BUSY)
		return -EBUSY;

	hermes_write_regn(hw, PARAM2, param2);
	hermes_write_regn(hw, PARAM1, param1);
	hermes_write_regn(hw, PARAM0, param0);
	hermes_write_regn(hw, CMD, cmd);

	return 0;
}
static int hermes_doicmd_wait(struct hermes *hw, u16 cmd,
			      u16 parm0, u16 parm1, u16 parm2,
			      struct hermes_response *resp)
{
	int err = 0;
	int k;
	u16 status, reg;

	err = hermes_issue_cmd(hw, cmd, parm0, parm1, parm2);
	if (err)
		return err;

	reg = hermes_read_regn(hw, EVSTAT);
	k = CMD_INIT_TIMEOUT;
	while ((!(reg & HERMES_EV_CMD)) && k) {
		k--;
		udelay(10);
		reg = hermes_read_regn(hw, EVSTAT);
	}

	hermes_write_regn(hw, SWSUPPORT0, HERMES_MAGIC);

	if (!hermes_present(hw)) {
		DEBUG(0, "hermes @ 0x%x: Card removed during reset.\n",
		       hw->iobase);
		err = -ENODEV;
		goto out;
	}

	if (!(reg & HERMES_EV_CMD)) {
		printk(KERN_ERR "hermes @ %p: "
		       "Timeout waiting for card to reset (reg=0x%04x)!\n",
		       hw->iobase, reg);
		err = -ETIMEDOUT;
		goto out;
	}

	status = hermes_read_regn(hw, STATUS);
	if (resp) {
		resp->status = status;
		resp->resp0 = hermes_read_regn(hw, RESP0);
		resp->resp1 = hermes_read_regn(hw, RESP1);
		resp->resp2 = hermes_read_regn(hw, RESP2);
	}

	hermes_write_regn(hw, EVACK, HERMES_EV_CMD);

	if (status & HERMES_STATUS_RESULT)
		err = -EIO;
out:
	return err;
}
Example #15
0
int hermes_init(hermes_t *hw)
{
	u16 status, reg;
	int err = 0;
	int k;

	/* We don't want to be interrupted while resetting the chipset */
	hw->inten = 0x0;
	hermes_write_regn(hw, INTEN, 0);
	hermes_write_regn(hw, EVACK, 0xffff);

	/* Normally it's a "can't happen" for the command register to
           be busy when we go to issue a command because we are
           serializing all commands.  However we want to have some
           chance of resetting the card even if it gets into a stupid
           state, so we actually wait to see if the command register
           will unbusy itself here. */
	k = CMD_BUSY_TIMEOUT;
	reg = hermes_read_regn(hw, CMD);
	while (k && (reg & HERMES_CMD_BUSY)) {
		if (reg == 0xffff) /* Special case - the card has probably been removed,
				      so don't wait for the timeout */
			return -ENODEV;

		k--;
		udelay(1);
		reg = hermes_read_regn(hw, CMD);
	}
	
	/* No need to explicitly handle the timeout - if we've timed
	   out hermes_issue_cmd() will probably return -EBUSY below */

	/* According to the documentation, EVSTAT may contain
	   obsolete event occurrence information.  We have to acknowledge
	   it by writing EVACK. */
	reg = hermes_read_regn(hw, EVSTAT);
	hermes_write_regn(hw, EVACK, reg);

	/* We don't use hermes_docmd_wait here, because the reset wipes
	   the magic constant in SWSUPPORT0 away, and it gets confused */
	err = hermes_issue_cmd(hw, HERMES_CMD_INIT, 0);
	if (err)
		return err;

	reg = hermes_read_regn(hw, EVSTAT);
	k = CMD_INIT_TIMEOUT;
	while ( (! (reg & HERMES_EV_CMD)) && k) {
		k--;
		udelay(10);
		reg = hermes_read_regn(hw, EVSTAT);
	}

	hermes_write_regn(hw, SWSUPPORT0, HERMES_MAGIC);

	if (! hermes_present(hw)) {
		DEBUG(0, "hermes @ 0x%x: Card removed during reset.\n",
		       hw->iobase);
		err = -ENODEV;
		goto out;
	}
		
	if (! (reg & HERMES_EV_CMD)) {
		printk(KERN_ERR "hermes @ %s0x%lx: " 
		       "Timeout waiting for card to reset (reg=0x%04x)!\n",
		       IO_TYPE(hw), hw->iobase, reg);
		err = -ETIMEDOUT;
		goto out;
	}

	status = hermes_read_regn(hw, STATUS);

	hermes_write_regn(hw, EVACK, HERMES_EV_CMD);

	if (status & HERMES_STATUS_RESULT)
		err = -EIO;

 out:
	return err;
}
static int hermes_docmd_wait(struct hermes *hw, u16 cmd, u16 parm0,
			     struct hermes_response *resp)
{
	int err;
	int k;
	u16 reg;
	u16 status;

	err = hermes_issue_cmd(hw, cmd, parm0, 0, 0);
	if (err) {
		if (!hermes_present(hw)) {
			if (net_ratelimit())
				printk(KERN_WARNING "hermes @ %p: "
				       "Card removed while issuing command "
				       "0x%04x.\n", hw->iobase, cmd);
			err = -ENODEV;
		} else
			if (net_ratelimit())
				printk(KERN_ERR "hermes @ %p: "
				       "Error %d issuing command 0x%04x.\n",
				       hw->iobase, err, cmd);
		goto out;
	}

	reg = hermes_read_regn(hw, EVSTAT);
	k = CMD_COMPL_TIMEOUT;
	while ((!(reg & HERMES_EV_CMD)) && k) {
		k--;
		udelay(10);
		reg = hermes_read_regn(hw, EVSTAT);
	}

	if (!hermes_present(hw)) {
		printk(KERN_WARNING "hermes @ %p: Card removed "
		       "while waiting for command 0x%04x completion.\n",
		       hw->iobase, cmd);
		err = -ENODEV;
		goto out;
	}

	if (!(reg & HERMES_EV_CMD)) {
		printk(KERN_ERR "hermes @ %p: Timeout waiting for "
		       "command 0x%04x completion.\n", hw->iobase, cmd);
		err = -ETIMEDOUT;
		goto out;
	}

	status = hermes_read_regn(hw, STATUS);
	if (resp) {
		resp->status = status;
		resp->resp0 = hermes_read_regn(hw, RESP0);
		resp->resp1 = hermes_read_regn(hw, RESP1);
		resp->resp2 = hermes_read_regn(hw, RESP2);
	}

	hermes_write_regn(hw, EVACK, HERMES_EV_CMD);

	if (status & HERMES_STATUS_RESULT)
		err = -EIO;

 out:
	return err;
}