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authorAnderson Lizardo <anderson.lizardo@indt.org.br>2008-09-17 16:34:38 +0100
committerDavid Vrabel <dv02@dv02pc01.europe.root.pri>2008-09-17 16:54:34 +0100
commitb5784f10d559b3c7b25874b21702ad0907b6fcb7 (patch)
treec3e678d182a8c928cbb3660895458ed98e6c9b03
parent8c7e8cb85557cc500122f3e489936582b7d11a7c (diff)
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uwb: i1480/GUWA100U: fix firmware download issues
IOGear firmware versions >= 1.4.12224 fail to be downloaded because of a spurious (and harmless) RCEB received after the download notification. This patch handles this RCEB and keeps compatibility with future versions that might not emit this RCEB. i1480_rceb_check() is reused to check for the RCEB. It is also refactored with improved comments and reused in another place in mac.c where the checking was being duplicated. This patch was tested on both i1480 and GUWA100U HWAs, with all firmware versions currently available. Signed-off-by: Anderson Lizardo <anderson.lizardo@indt.org.br>
-rw-r--r--drivers/uwb/i1480/dfu/dfu.c54
-rw-r--r--drivers/uwb/i1480/dfu/i1480-dfu.h2
-rw-r--r--drivers/uwb/i1480/dfu/mac.c4
3 files changed, 45 insertions, 15 deletions
diff --git a/drivers/uwb/i1480/dfu/dfu.c b/drivers/uwb/i1480/dfu/dfu.c
index aec4146..9097b3b 100644
--- a/drivers/uwb/i1480/dfu/dfu.c
+++ b/drivers/uwb/i1480/dfu/dfu.c
@@ -37,29 +37,45 @@
#define D_LOCAL 0
#include <linux/uwb/debug.h>
-/** @return 0 if If @evt is a valid reply event; otherwise complain */
+/**
+ * i1480_rceb_check - Check RCEB for expected field values
+ * @i1480: pointer to device for which RCEB is being checked
+ * @rceb: RCEB being checked
+ * @cmd: which command the RCEB is related to
+ * @context: expected context
+ * @expected_type: expected event type
+ * @expected_event: expected event
+ *
+ * If @cmd is NULL, do not print error messages, but still return an error
+ * code.
+ *
+ * Return 0 if @rceb matches the expected values, -EINVAL otherwise.
+ */
int i1480_rceb_check(const struct i1480 *i1480, const struct uwb_rceb *rceb,
- const char *cmd, u8 context,
- unsigned expected_type, unsigned expected_event)
+ const char *cmd, u8 context, u8 expected_type,
+ unsigned expected_event)
{
int result = 0;
struct device *dev = i1480->dev;
if (rceb->bEventContext != context) {
- dev_err(dev, "%s: "
- "unexpected context id 0x%02x (expected 0x%02x)\n",
- cmd, rceb->bEventContext, context);
+ if (cmd)
+ dev_err(dev, "%s: unexpected context id 0x%02x "
+ "(expected 0x%02x)\n", cmd,
+ rceb->bEventContext, context);
result = -EINVAL;
}
if (rceb->bEventType != expected_type) {
- dev_err(dev, "%s: "
- "unexpected event type 0x%02x (expected 0x%02x)\n",
- cmd, rceb->bEventType, expected_type);
+ if (cmd)
+ dev_err(dev, "%s: unexpected event type 0x%02x "
+ "(expected 0x%02x)\n", cmd,
+ rceb->bEventType, expected_type);
result = -EINVAL;
}
if (le16_to_cpu(rceb->wEvent) != expected_event) {
- dev_err(dev, "%s: "
- "unexpected event 0x%04x (expected 0x%04x)\n",
- cmd, le16_to_cpu(rceb->wEvent), expected_event);
+ if (cmd)
+ dev_err(dev, "%s: unexpected event 0x%04x "
+ "(expected 0x%04x)\n", cmd,
+ le16_to_cpu(rceb->wEvent), expected_event);
result = -EINVAL;
}
return result;
@@ -110,6 +126,20 @@ ssize_t i1480_cmd(struct i1480 *i1480, const char *cmd_name, size_t cmd_size,
cmd_name, result);
goto error;
}
+ /*
+ * Firmware versions >= 1.4.12224 for IOGear GUWA100U generate a
+ * spurious notification after firmware is downloaded. So check whether
+ * the receibed RCEB is such notification before assuming that the
+ * command has failed.
+ */
+ if (i1480_rceb_check(i1480, i1480->evt_buf, NULL,
+ 0, 0xfd, 0x0022) == 0) {
+ /* Now wait for the actual RCEB for this command. */
+ result = i1480->wait_init_done(i1480);
+ if (result < 0)
+ goto error;
+ result = i1480->evt_result;
+ }
if (result != reply_size) {
dev_err(i1480->dev, "%s returned only %zu bytes, %zu expected\n",
cmd_name, result, reply_size);
diff --git a/drivers/uwb/i1480/dfu/i1480-dfu.h b/drivers/uwb/i1480/dfu/i1480-dfu.h
index 8035418..46f45e8 100644
--- a/drivers/uwb/i1480/dfu/i1480-dfu.h
+++ b/drivers/uwb/i1480/dfu/i1480-dfu.h
@@ -145,7 +145,7 @@ extern int i1480_phy_fw_upload(struct i1480 *);
extern ssize_t i1480_cmd(struct i1480 *, const char *, size_t, size_t);
extern int i1480_rceb_check(const struct i1480 *,
const struct uwb_rceb *, const char *, u8,
- unsigned, unsigned);
+ u8, unsigned);
enum {
/* Vendor specific command type */
diff --git a/drivers/uwb/i1480/dfu/mac.c b/drivers/uwb/i1480/dfu/mac.c
index 3d44554..8d06990 100644
--- a/drivers/uwb/i1480/dfu/mac.c
+++ b/drivers/uwb/i1480/dfu/mac.c
@@ -507,8 +507,8 @@ int i1480_mac_fw_upload(struct i1480 *i1480)
goto error_size;
}
result = -EIO;
- if (rcebe->rceb.bEventType != i1480_CET_VS1
- || le16_to_cpu(rcebe->rceb.wEvent) != i1480_EVT_RM_INIT_DONE) {
+ if (i1480_rceb_check(i1480, &rcebe->rceb, NULL, 0, i1480_CET_VS1,
+ i1480_EVT_RM_INIT_DONE) < 0) {
dev_err(i1480->dev, "wrong initialization event 0x%02x/%04x/%02x "
"received; expected 0x%02x/%04x/00\n",
rcebe->rceb.bEventType, le16_to_cpu(rcebe->rceb.wEvent),