76 lines
2.5 KiB
Diff
76 lines
2.5 KiB
Diff
|
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)
|