/branches/gl-inet/package/kernel/mac80211/patches/334-v4.18-0001-brcmfmac-add-debugfs-entry-for-reading-firmware-capa.patch |
@@ -0,0 +1,75 @@ |
From 88001968245c42c26416476bf0ef960442371605 Mon Sep 17 00:00:00 2001 |
From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl> |
Date: Mon, 14 May 2018 08:48:20 +0200 |
Subject: [PATCH] brcmfmac: add debugfs entry for reading firmware capabilities |
MIME-Version: 1.0 |
Content-Type: text/plain; charset=UTF-8 |
Content-Transfer-Encoding: 8bit |
|
This allows reading all capabilities as reported by a firmware. They are |
printed using native (raw) names, just like developers like it the most. |
It's how firmware reports support for various features, e.g. supported |
modes, supported standards, power saving details, max BSS-es. |
|
Access to all that info is useful for trying new firmwares, comparing |
them and debugging features AKA bugs. |
|
Signed-off-by: Rafał Miłecki <rafal@milecki.pl> |
Reviewed-by: Arend van Spriel <arend.vanspriel@broadcom.com> |
Signed-off-by: Kalle Valo <kvalo@codeaurora.org> |
--- |
.../wireless/broadcom/brcm80211/brcmfmac/feature.c | 36 ++++++++++++++++++++++ |
1 file changed, 36 insertions(+) |
|
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/feature.c |
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/feature.c |
@@ -165,6 +165,41 @@ static void brcmf_feat_firmware_capabili |
} |
} |
|
+/** |
+ * brcmf_feat_fwcap_debugfs_read() - expose firmware capabilities to debugfs. |
+ * |
+ * @seq: sequence for debugfs entry. |
+ * @data: raw data pointer. |
+ */ |
+static int brcmf_feat_fwcap_debugfs_read(struct seq_file *seq, void *data) |
+{ |
+ struct brcmf_bus *bus_if = dev_get_drvdata(seq->private); |
+ struct brcmf_if *ifp = brcmf_get_ifp(bus_if->drvr, 0); |
+ char caps[MAX_CAPS_BUFFER_SIZE + 1] = { }; |
+ char *tmp; |
+ int err; |
+ |
+ err = brcmf_fil_iovar_data_get(ifp, "cap", caps, sizeof(caps)); |
+ if (err) { |
+ brcmf_err("could not get firmware cap (%d)\n", err); |
+ return err; |
+ } |
+ |
+ /* Put every capability in a new line */ |
+ for (tmp = caps; *tmp; tmp++) { |
+ if (*tmp == ' ') |
+ *tmp = '\n'; |
+ } |
+ |
+ /* Usually there is a space at the end of capabilities string */ |
+ seq_printf(seq, "%s", caps); |
+ /* So make sure we don't print two line breaks */ |
+ if (tmp > caps && *(tmp - 1) != '\n') |
+ seq_printf(seq, "\n"); |
+ |
+ return 0; |
+} |
+ |
void brcmf_feat_attach(struct brcmf_pub *drvr) |
{ |
struct brcmf_if *ifp = brcmf_get_ifp(drvr, 0); |
@@ -233,6 +268,7 @@ void brcmf_feat_attach(struct brcmf_pub |
void brcmf_feat_debugfs_create(struct brcmf_pub *drvr) |
{ |
brcmf_debugfs_add_entry(drvr, "features", brcmf_feat_debugfs_read); |
+ brcmf_debugfs_add_entry(drvr, "fwcap", brcmf_feat_fwcap_debugfs_read); |
} |
|
bool brcmf_feat_is_enabled(struct brcmf_if *ifp, enum brcmf_feat_id id) |