From ff974e4083341383d3dd4079e52ed30f57f376f0 Mon Sep 17 00:00:00 2001 From: Vladimir Kondratiev Date: Mon, 16 Jun 2014 19:37:08 +0300 Subject: [PATCH] wil6210: debugfs interface to send raw WMI command Debug aid Signed-off-by: Vladimir Kondratiev Signed-off-by: John W. Linville --- drivers/net/wireless/ath/wil6210/debugfs.c | 41 ++++++++++++++++++++++ 1 file changed, 41 insertions(+) diff --git a/drivers/net/wireless/ath/wil6210/debugfs.c b/drivers/net/wireless/ath/wil6210/debugfs.c index 3c3abb6f30fe..8767f4ce33f4 100644 --- a/drivers/net/wireless/ath/wil6210/debugfs.c +++ b/drivers/net/wireless/ath/wil6210/debugfs.c @@ -513,6 +513,46 @@ static const struct file_operations fops_txmgmt = { .open = simple_open, }; +/* Write WMI command (w/o mbox header) to this file to send it + * WMI starts from wil6210_mbox_hdr_wmi header + */ +static ssize_t wil_write_file_wmi(struct file *file, const char __user *buf, + size_t len, loff_t *ppos) +{ + struct wil6210_priv *wil = file->private_data; + struct wil6210_mbox_hdr_wmi *wmi; + void *cmd; + int cmdlen = len - sizeof(struct wil6210_mbox_hdr_wmi); + u16 cmdid; + int rc, rc1; + + if (cmdlen <= 0) + return -EINVAL; + + wmi = kmalloc(len, GFP_KERNEL); + if (!wmi) + return -ENOMEM; + + rc = simple_write_to_buffer(wmi, len, ppos, buf, len); + if (rc < 0) + return rc; + + cmd = &wmi[1]; + cmdid = le16_to_cpu(wmi->id); + + rc1 = wmi_send(wil, cmdid, cmd, cmdlen); + kfree(wmi); + + wil_info(wil, "%s(0x%04x[%d]) -> %d\n", __func__, cmdid, cmdlen, rc1); + + return rc; +} + +static const struct file_operations fops_wmi = { + .write = wil_write_file_wmi, + .open = simple_open, +}; + static void wil_seq_hexdump(struct seq_file *s, void *p, int len, const char *prefix) { @@ -838,6 +878,7 @@ int wil6210_debugfs_init(struct wil6210_priv *wil) debugfs_create_file("reset", S_IWUSR, dbg, wil, &fops_reset); debugfs_create_file("rxon", S_IWUSR, dbg, wil, &fops_rxon); debugfs_create_file("tx_mgmt", S_IWUSR, dbg, wil, &fops_txmgmt); + debugfs_create_file("wmi_send", S_IWUSR, dbg, wil, &fops_wmi); debugfs_create_file("temp", S_IRUGO, dbg, wil, &fops_temp); wil->rgf_blob.data = (void * __force)wil->csr + 0; -- 2.30.2