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path: root/drivers/net/wireless/libertas/if_cs.c
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Diffstat (limited to 'drivers/net/wireless/libertas/if_cs.c')
-rw-r--r--drivers/net/wireless/libertas/if_cs.c42
1 files changed, 37 insertions, 5 deletions
diff --git a/drivers/net/wireless/libertas/if_cs.c b/drivers/net/wireless/libertas/if_cs.c
index 2a5b083bf9b..62381768f2d 100644
--- a/drivers/net/wireless/libertas/if_cs.c
+++ b/drivers/net/wireless/libertas/if_cs.c
@@ -59,6 +59,7 @@ struct if_cs_card {
struct pcmcia_device *p_dev;
struct lbs_private *priv;
void __iomem *iobase;
+ bool align_regs;
};
@@ -274,16 +275,25 @@ static int if_cs_poll_while_fw_download(struct if_cs_card *card, uint addr, u8 r
#define IF_CS_PRODUCT_ID 0x0000001C
#define IF_CS_CF8385_B1_REV 0x12
#define IF_CS_CF8381_B3_REV 0x04
+#define IF_CS_CF8305_B1_REV 0x03
/*
* Used to detect other cards than CF8385 since their revisions of silicon
* doesn't match those from CF8385, eg. CF8381 B3 works with this driver.
*/
+#define CF8305_MANFID 0x02db
+#define CF8305_CARDID 0x8103
#define CF8381_MANFID 0x02db
#define CF8381_CARDID 0x6064
#define CF8385_MANFID 0x02df
#define CF8385_CARDID 0x8103
+static inline int if_cs_hw_is_cf8305(struct pcmcia_device *p_dev)
+{
+ return (p_dev->manf_id == CF8305_MANFID &&
+ p_dev->card_id == CF8305_CARDID);
+}
+
static inline int if_cs_hw_is_cf8381(struct pcmcia_device *p_dev)
{
return (p_dev->manf_id == CF8381_MANFID &&
@@ -556,7 +566,15 @@ static int if_cs_prog_helper(struct if_cs_card *card)
lbs_deb_enter(LBS_DEB_CS);
- scratch = if_cs_read8(card, IF_CS_SCRATCH);
+ /*
+ * This is the only place where an unaligned register access happens on
+ * the CF8305 card, therefore for the sake of speed of the driver, we do
+ * the alignment correction here.
+ */
+ if (card->align_regs)
+ scratch = if_cs_read16(card, IF_CS_SCRATCH) >> 8;
+ else
+ scratch = if_cs_read8(card, IF_CS_SCRATCH);
/* "If the value is 0x5a, the firmware is already
* downloaded successfully"
@@ -880,8 +898,24 @@ static int if_cs_probe(struct pcmcia_device *p_dev)
p_dev->irq.AssignedIRQ, p_dev->io.BasePort1,
p_dev->io.BasePort1 + p_dev->io.NumPorts1 - 1);
+ /*
+ * Most of the libertas cards can do unaligned register access, but some
+ * weird ones can not. That's especially true for the CF8305 card.
+ */
+ card->align_regs = 0;
+
/* Check if we have a current silicon */
prod_id = if_cs_read8(card, IF_CS_PRODUCT_ID);
+ if (if_cs_hw_is_cf8305(p_dev)) {
+ card->align_regs = 1;
+ if (prod_id < IF_CS_CF8305_B1_REV) {
+ lbs_pr_err("old chips like 8305 rev B3 "
+ "aren't supported\n");
+ ret = -ENODEV;
+ goto out2;
+ }
+ }
+
if (if_cs_hw_is_cf8381(p_dev) && prod_id < IF_CS_CF8381_B3_REV) {
lbs_pr_err("old chips like 8381 rev B3 aren't supported\n");
ret = -ENODEV;
@@ -896,7 +930,7 @@ static int if_cs_probe(struct pcmcia_device *p_dev)
/* Load the firmware early, before calling into libertas.ko */
ret = if_cs_prog_helper(card);
- if (ret == 0)
+ if (ret == 0 && !if_cs_hw_is_cf8305(p_dev))
ret = if_cs_prog_real(card);
if (ret)
goto out2;
@@ -933,9 +967,6 @@ static int if_cs_probe(struct pcmcia_device *p_dev)
goto out3;
}
- /* The firmware for the CF card supports powersave */
- priv->ps_supported = 1;
-
ret = 0;
goto out;
@@ -979,6 +1010,7 @@ static void if_cs_detach(struct pcmcia_device *p_dev)
/********************************************************************/
static struct pcmcia_device_id if_cs_ids[] = {
+ PCMCIA_DEVICE_MANF_CARD(CF8305_MANFID, CF8305_CARDID),
PCMCIA_DEVICE_MANF_CARD(CF8381_MANFID, CF8381_CARDID),
PCMCIA_DEVICE_MANF_CARD(CF8385_MANFID, CF8385_CARDID),
PCMCIA_DEVICE_NULL,