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434 lines
13 KiB
434 lines
13 KiB
From fdd0bd88ceaecf729db103ac8836af5805dd2dc1 Mon Sep 17 00:00:00 2001
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From: Chung-Hsien Hsu <stanley.hsu@cypress.com>
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Date: Fri, 10 Nov 2017 17:27:15 +0800
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Subject: [PATCH] brcmfmac: add CLM download support
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The firmware for brcmfmac devices includes information regarding
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regulatory constraints. For certain devices this information is kept
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separately in a binary form that needs to be downloaded to the device.
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This patch adds support to download this so-called CLM blob file. It
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uses the same naming scheme as the other firmware files with extension
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of .clm_blob.
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The CLM blob file is optional. If the file does not exist, the download
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process will be bypassed. It will not affect the driver loading.
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Reviewed-by: Arend van Spriel <arend.vanspriel@broadcom.com>
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Signed-off-by: Chung-Hsien Hsu <stanley.hsu@cypress.com>
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Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
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---
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.../net/wireless/broadcom/brcm80211/brcmfmac/bus.h | 10 ++
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.../wireless/broadcom/brcm80211/brcmfmac/common.c | 157 +++++++++++++++++++++
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.../wireless/broadcom/brcm80211/brcmfmac/core.c | 2 +
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.../wireless/broadcom/brcm80211/brcmfmac/core.h | 2 +
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.../broadcom/brcm80211/brcmfmac/fwil_types.h | 31 ++++
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.../wireless/broadcom/brcm80211/brcmfmac/pcie.c | 19 +++
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.../wireless/broadcom/brcm80211/brcmfmac/sdio.c | 19 +++
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.../net/wireless/broadcom/brcm80211/brcmfmac/usb.c | 18 +++
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8 files changed, 258 insertions(+)
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--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bus.h
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+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bus.h
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@@ -71,6 +71,7 @@ struct brcmf_bus_dcmd {
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* @wowl_config: specify if dongle is configured for wowl when going to suspend
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* @get_ramsize: obtain size of device memory.
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* @get_memdump: obtain device memory dump in provided buffer.
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+ * @get_fwname: obtain firmware name.
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*
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* This structure provides an abstract interface towards the
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* bus specific driver. For control messages to common driver
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@@ -87,6 +88,8 @@ struct brcmf_bus_ops {
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void (*wowl_config)(struct device *dev, bool enabled);
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size_t (*get_ramsize)(struct device *dev);
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int (*get_memdump)(struct device *dev, void *data, size_t len);
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+ int (*get_fwname)(struct device *dev, uint chip, uint chiprev,
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+ unsigned char *fw_name);
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};
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@@ -224,6 +227,13 @@ int brcmf_bus_get_memdump(struct brcmf_b
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return bus->ops->get_memdump(bus->dev, data, len);
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}
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+static inline
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+int brcmf_bus_get_fwname(struct brcmf_bus *bus, uint chip, uint chiprev,
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+ unsigned char *fw_name)
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+{
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+ return bus->ops->get_fwname(bus->dev, chip, chiprev, fw_name);
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+}
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+
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/*
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* interface functions from common layer
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*/
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--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/common.c
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+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/common.c
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@@ -18,6 +18,7 @@
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#include <linux/string.h>
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#include <linux/netdevice.h>
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#include <linux/module.h>
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+#include <linux/firmware.h>
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#include <brcmu_wifi.h>
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#include <brcmu_utils.h>
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#include "core.h"
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@@ -28,6 +29,7 @@
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#include "tracepoint.h"
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#include "common.h"
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#include "of.h"
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+#include "firmware.h"
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MODULE_AUTHOR("Broadcom Corporation");
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MODULE_DESCRIPTION("Broadcom 802.11 wireless LAN fullmac driver.");
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@@ -104,12 +106,140 @@ void brcmf_c_set_joinpref_default(struct
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brcmf_err("Set join_pref error (%d)\n", err);
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}
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+static int brcmf_c_download(struct brcmf_if *ifp, u16 flag,
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+ struct brcmf_dload_data_le *dload_buf,
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+ u32 len)
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+{
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+ s32 err;
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+
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+ flag |= (DLOAD_HANDLER_VER << DLOAD_FLAG_VER_SHIFT);
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+ dload_buf->flag = cpu_to_le16(flag);
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+ dload_buf->dload_type = cpu_to_le16(DL_TYPE_CLM);
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+ dload_buf->len = cpu_to_le32(len);
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+ dload_buf->crc = cpu_to_le32(0);
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+ len = sizeof(*dload_buf) + len - 1;
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+
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+ err = brcmf_fil_iovar_data_set(ifp, "clmload", dload_buf, len);
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+
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+ return err;
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+}
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+
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+static int brcmf_c_get_clm_name(struct brcmf_if *ifp, u8 *clm_name)
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+{
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+ struct brcmf_bus *bus = ifp->drvr->bus_if;
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+ struct brcmf_rev_info *ri = &ifp->drvr->revinfo;
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+ u8 fw_name[BRCMF_FW_NAME_LEN];
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+ u8 *ptr;
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+ size_t len;
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+ s32 err;
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+
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+ memset(fw_name, 0, BRCMF_FW_NAME_LEN);
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+ err = brcmf_bus_get_fwname(bus, ri->chipnum, ri->chiprev, fw_name);
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+ if (err) {
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+ brcmf_err("get firmware name failed (%d)\n", err);
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+ goto done;
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+ }
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+
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+ /* generate CLM blob file name */
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+ ptr = strrchr(fw_name, '.');
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+ if (!ptr) {
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+ err = -ENOENT;
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+ goto done;
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+ }
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+
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+ len = ptr - fw_name + 1;
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+ if (len + strlen(".clm_blob") > BRCMF_FW_NAME_LEN) {
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+ err = -E2BIG;
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+ } else {
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+ strlcpy(clm_name, fw_name, len);
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+ strlcat(clm_name, ".clm_blob", BRCMF_FW_NAME_LEN);
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+ }
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+done:
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+ return err;
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+}
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+
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+static int brcmf_c_process_clm_blob(struct brcmf_if *ifp)
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+{
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+ struct device *dev = ifp->drvr->bus_if->dev;
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+ struct brcmf_dload_data_le *chunk_buf;
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+ const struct firmware *clm = NULL;
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+ u8 clm_name[BRCMF_FW_NAME_LEN];
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+ u32 chunk_len;
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+ u32 datalen;
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+ u32 cumulative_len;
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+ u16 dl_flag = DL_BEGIN;
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+ u32 status;
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+ s32 err;
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+
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+ brcmf_dbg(TRACE, "Enter\n");
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+
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+ memset(clm_name, 0, BRCMF_FW_NAME_LEN);
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+ err = brcmf_c_get_clm_name(ifp, clm_name);
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+ if (err) {
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+ brcmf_err("get CLM blob file name failed (%d)\n", err);
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+ return err;
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+ }
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+
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+ err = request_firmware(&clm, clm_name, dev);
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+ if (err) {
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+ if (err == -ENOENT) {
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+ brcmf_dbg(INFO, "continue with CLM data currently present in firmware\n");
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+ return 0;
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+ }
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+ brcmf_err("request CLM blob file failed (%d)\n", err);
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+ return err;
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+ }
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+
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+ chunk_buf = kzalloc(sizeof(*chunk_buf) + MAX_CHUNK_LEN - 1, GFP_KERNEL);
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+ if (!chunk_buf) {
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+ err = -ENOMEM;
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+ goto done;
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+ }
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+
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+ datalen = clm->size;
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+ cumulative_len = 0;
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+ do {
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+ if (datalen > MAX_CHUNK_LEN) {
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+ chunk_len = MAX_CHUNK_LEN;
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+ } else {
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+ chunk_len = datalen;
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+ dl_flag |= DL_END;
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+ }
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+ memcpy(chunk_buf->data, clm->data + cumulative_len, chunk_len);
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+
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+ err = brcmf_c_download(ifp, dl_flag, chunk_buf, chunk_len);
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+
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+ dl_flag &= ~DL_BEGIN;
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+
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+ cumulative_len += chunk_len;
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+ datalen -= chunk_len;
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+ } while ((datalen > 0) && (err == 0));
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+
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+ if (err) {
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+ brcmf_err("clmload (%zu byte file) failed (%d); ",
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+ clm->size, err);
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+ /* Retrieve clmload_status and print */
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+ err = brcmf_fil_iovar_int_get(ifp, "clmload_status", &status);
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+ if (err)
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+ brcmf_err("get clmload_status failed (%d)\n", err);
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+ else
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+ brcmf_dbg(INFO, "clmload_status=%d\n", status);
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+ err = -EIO;
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+ }
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+
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+ kfree(chunk_buf);
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+done:
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+ release_firmware(clm);
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+ return err;
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+}
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+
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int brcmf_c_preinit_dcmds(struct brcmf_if *ifp)
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{
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s8 eventmask[BRCMF_EVENTING_MASK_LEN];
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u8 buf[BRCMF_DCMD_SMLEN];
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struct brcmf_rev_info_le revinfo;
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struct brcmf_rev_info *ri;
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+ char *clmver;
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char *ptr;
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s32 err;
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@@ -148,6 +278,13 @@ int brcmf_c_preinit_dcmds(struct brcmf_i
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}
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ri->result = err;
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+ /* Do any CLM downloading */
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+ err = brcmf_c_process_clm_blob(ifp);
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+ if (err < 0) {
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+ brcmf_err("download CLM blob file failed, %d\n", err);
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+ goto done;
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+ }
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+
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/* query for 'ver' to get version info from firmware */
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memset(buf, 0, sizeof(buf));
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strcpy(buf, "ver");
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@@ -167,6 +304,26 @@ int brcmf_c_preinit_dcmds(struct brcmf_i
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ptr = strrchr(buf, ' ') + 1;
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strlcpy(ifp->drvr->fwver, ptr, sizeof(ifp->drvr->fwver));
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+ /* Query for 'clmver' to get CLM version info from firmware */
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+ memset(buf, 0, sizeof(buf));
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+ err = brcmf_fil_iovar_data_get(ifp, "clmver", buf, sizeof(buf));
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+ if (err) {
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+ brcmf_dbg(TRACE, "retrieving clmver failed, %d\n", err);
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+ } else {
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+ clmver = (char *)buf;
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+ /* store CLM version for adding it to revinfo debugfs file */
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+ memcpy(ifp->drvr->clmver, clmver, sizeof(ifp->drvr->clmver));
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+
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+ /* Replace all newline/linefeed characters with space
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+ * character
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+ */
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+ ptr = clmver;
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+ while ((ptr = strnchr(ptr, '\n', sizeof(buf))) != NULL)
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+ *ptr = ' ';
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+
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+ brcmf_dbg(INFO, "CLM version = %s\n", clmver);
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+ }
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+
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/* set mpc */
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err = brcmf_fil_iovar_int_set(ifp, "mpc", 1);
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if (err) {
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--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.c
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+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.c
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@@ -1009,6 +1009,8 @@ static int brcmf_revinfo_read(struct seq
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seq_printf(s, "anarev: %u\n", ri->anarev);
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seq_printf(s, "nvramrev: %08x\n", ri->nvramrev);
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+ seq_printf(s, "clmver: %s\n", bus_if->drvr->clmver);
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+
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return 0;
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}
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--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.h
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+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.h
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@@ -141,6 +141,8 @@ struct brcmf_pub {
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struct notifier_block inetaddr_notifier;
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struct notifier_block inet6addr_notifier;
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struct brcmf_mp_device *settings;
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+
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+ u8 clmver[BRCMF_DCMD_SMLEN];
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};
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/* forward declarations */
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--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/fwil_types.h
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+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/fwil_types.h
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@@ -155,6 +155,21 @@
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#define BRCMF_MFP_CAPABLE 1
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#define BRCMF_MFP_REQUIRED 2
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+/* MAX_CHUNK_LEN is the maximum length for data passing to firmware in each
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+ * ioctl. It is relatively small because firmware has small maximum size input
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+ * playload restriction for ioctls.
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+ */
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+#define MAX_CHUNK_LEN 1400
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+
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+#define DLOAD_HANDLER_VER 1 /* Downloader version */
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+#define DLOAD_FLAG_VER_MASK 0xf000 /* Downloader version mask */
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+#define DLOAD_FLAG_VER_SHIFT 12 /* Downloader version shift */
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+
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+#define DL_BEGIN 0x0002
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+#define DL_END 0x0004
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+
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+#define DL_TYPE_CLM 2
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+
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/* join preference types for join_pref iovar */
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enum brcmf_join_pref_types {
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BRCMF_JOIN_PREF_RSSI = 1,
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@@ -827,6 +842,22 @@ struct brcmf_pno_macaddr_le {
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};
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/**
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+ * struct brcmf_dload_data_le - data passing to firmware for downloading
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+ * @flag: flags related to download data.
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+ * @dload_type: type of download data.
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+ * @len: length in bytes of download data.
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+ * @crc: crc of download data.
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+ * @data: download data.
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+ */
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+struct brcmf_dload_data_le {
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+ __le16 flag;
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+ __le16 dload_type;
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+ __le32 len;
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+ __le32 crc;
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+ u8 data[1];
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+};
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+
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+/**
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* struct brcmf_pno_bssid_le - bssid configuration for PNO scan.
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*
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* @bssid: BSS network identifier.
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--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/pcie.c
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+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/pcie.c
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@@ -1350,6 +1350,24 @@ static int brcmf_pcie_get_memdump(struct
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return 0;
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}
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+static int brcmf_pcie_get_fwname(struct device *dev, u32 chip, u32 chiprev,
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+ u8 *fw_name)
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+{
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+ struct brcmf_bus *bus_if = dev_get_drvdata(dev);
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+ struct brcmf_pciedev *buspub = bus_if->bus_priv.pcie;
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+ struct brcmf_pciedev_info *devinfo = buspub->devinfo;
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+ int ret = 0;
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+
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+ if (devinfo->fw_name[0] != '\0')
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+ strlcpy(fw_name, devinfo->fw_name, BRCMF_FW_NAME_LEN);
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+ else
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+ ret = brcmf_fw_map_chip_to_name(chip, chiprev,
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+ brcmf_pcie_fwnames,
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+ ARRAY_SIZE(brcmf_pcie_fwnames),
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+ fw_name, NULL);
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+
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+ return ret;
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+}
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static const struct brcmf_bus_ops brcmf_pcie_bus_ops = {
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.txdata = brcmf_pcie_tx,
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@@ -1359,6 +1377,7 @@ static const struct brcmf_bus_ops brcmf_
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.wowl_config = brcmf_pcie_wowl_config,
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.get_ramsize = brcmf_pcie_get_ramsize,
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.get_memdump = brcmf_pcie_get_memdump,
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+ .get_fwname = brcmf_pcie_get_fwname,
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};
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--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c
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+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c
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@@ -3985,6 +3985,24 @@ brcmf_sdio_watchdog(unsigned long data)
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}
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}
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+static int brcmf_sdio_get_fwname(struct device *dev, u32 chip, u32 chiprev,
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+ u8 *fw_name)
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+{
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+ struct brcmf_bus *bus_if = dev_get_drvdata(dev);
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+ struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio;
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+ int ret = 0;
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+
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+ if (sdiodev->fw_name[0] != '\0')
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+ strlcpy(fw_name, sdiodev->fw_name, BRCMF_FW_NAME_LEN);
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+ else
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+ ret = brcmf_fw_map_chip_to_name(chip, chiprev,
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+ brcmf_sdio_fwnames,
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+ ARRAY_SIZE(brcmf_sdio_fwnames),
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+ fw_name, NULL);
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+
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+ return ret;
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+}
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+
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static const struct brcmf_bus_ops brcmf_sdio_bus_ops = {
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.stop = brcmf_sdio_bus_stop,
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.preinit = brcmf_sdio_bus_preinit,
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@@ -3995,6 +4013,7 @@ static const struct brcmf_bus_ops brcmf_
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.wowl_config = brcmf_sdio_wowl_config,
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.get_ramsize = brcmf_sdio_bus_get_ramsize,
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.get_memdump = brcmf_sdio_bus_get_memdump,
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+ .get_fwname = brcmf_sdio_get_fwname,
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};
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static void brcmf_sdio_firmware_callback(struct device *dev, int err,
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--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/usb.c
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+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/usb.c
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@@ -1128,12 +1128,30 @@ static void brcmf_usb_wowl_config(struct
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device_set_wakeup_enable(devinfo->dev, false);
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}
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+static int brcmf_usb_get_fwname(struct device *dev, u32 chip, u32 chiprev,
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+ u8 *fw_name)
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+{
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+ struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(dev);
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+ int ret = 0;
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+
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+ if (devinfo->fw_name[0] != '\0')
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+ strlcpy(fw_name, devinfo->fw_name, BRCMF_FW_NAME_LEN);
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+ else
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+ ret = brcmf_fw_map_chip_to_name(chip, chiprev,
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+ brcmf_usb_fwnames,
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+ ARRAY_SIZE(brcmf_usb_fwnames),
|
|
+ fw_name, NULL);
|
|
+
|
|
+ return ret;
|
|
+}
|
|
+
|
|
static const struct brcmf_bus_ops brcmf_usb_bus_ops = {
|
|
.txdata = brcmf_usb_tx,
|
|
.stop = brcmf_usb_down,
|
|
.txctl = brcmf_usb_tx_ctlpkt,
|
|
.rxctl = brcmf_usb_rx_ctlpkt,
|
|
.wowl_config = brcmf_usb_wowl_config,
|
|
+ .get_fwname = brcmf_usb_get_fwname,
|
|
};
|
|
|
|
static int brcmf_usb_bus_setup(struct brcmf_usbdev_info *devinfo)
|
|
|