diff options
Diffstat (limited to 'drivers/net/wireless/broadcom/brcm80211/brcmfmac/common.c')
| -rw-r--r-- | drivers/net/wireless/broadcom/brcm80211/brcmfmac/common.c | 157 |
1 files changed, 157 insertions, 0 deletions
diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/common.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/common.c index 7a2b49587b4d..6a59d0609d30 100644 --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/common.c +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/common.c @@ -18,6 +18,7 @@ #include <linux/string.h> #include <linux/netdevice.h> #include <linux/module.h> +#include <linux/firmware.h> #include <brcmu_wifi.h> #include <brcmu_utils.h> #include "core.h" @@ -28,6 +29,7 @@ #include "tracepoint.h" #include "common.h" #include "of.h" +#include "firmware.h" MODULE_AUTHOR("Broadcom Corporation"); MODULE_DESCRIPTION("Broadcom 802.11 wireless LAN fullmac driver."); @@ -104,12 +106,140 @@ void brcmf_c_set_joinpref_default(struct brcmf_if *ifp) brcmf_err("Set join_pref error (%d)\n", err); } +static int brcmf_c_download(struct brcmf_if *ifp, u16 flag, + struct brcmf_dload_data_le *dload_buf, + u32 len) +{ + s32 err; + + flag |= (DLOAD_HANDLER_VER << DLOAD_FLAG_VER_SHIFT); + dload_buf->flag = cpu_to_le16(flag); + dload_buf->dload_type = cpu_to_le16(DL_TYPE_CLM); + dload_buf->len = cpu_to_le32(len); + dload_buf->crc = cpu_to_le32(0); + len = sizeof(*dload_buf) + len - 1; + + err = brcmf_fil_iovar_data_set(ifp, "clmload", dload_buf, len); + + return err; +} + +static int brcmf_c_get_clm_name(struct brcmf_if *ifp, u8 *clm_name) +{ + struct brcmf_bus *bus = ifp->drvr->bus_if; + struct brcmf_rev_info *ri = &ifp->drvr->revinfo; + u8 fw_name[BRCMF_FW_NAME_LEN]; + u8 *ptr; + size_t len; + s32 err; + + memset(fw_name, 0, BRCMF_FW_NAME_LEN); + err = brcmf_bus_get_fwname(bus, ri->chipnum, ri->chiprev, fw_name); + if (err) { + brcmf_err("get firmware name failed (%d)\n", err); + goto done; + } + + /* generate CLM blob file name */ + ptr = strrchr(fw_name, '.'); + if (!ptr) { + err = -ENOENT; + goto done; + } + + len = ptr - fw_name + 1; + if (len + strlen(".clm_blob") > BRCMF_FW_NAME_LEN) { + err = -E2BIG; + } else { + strlcpy(clm_name, fw_name, len); + strlcat(clm_name, ".clm_blob", BRCMF_FW_NAME_LEN); + } +done: + return err; +} + +static int brcmf_c_process_clm_blob(struct brcmf_if *ifp) +{ + struct device *dev = ifp->drvr->bus_if->dev; + struct brcmf_dload_data_le *chunk_buf; + const struct firmware *clm = NULL; + u8 clm_name[BRCMF_FW_NAME_LEN]; + u32 chunk_len; + u32 datalen; + u32 cumulative_len; + u16 dl_flag = DL_BEGIN; + u32 status; + s32 err; + + brcmf_dbg(TRACE, "Enter\n"); + + memset(clm_name, 0, BRCMF_FW_NAME_LEN); + err = brcmf_c_get_clm_name(ifp, clm_name); + if (err) { + brcmf_err("get CLM blob file name failed (%d)\n", err); + return err; + } + + err = request_firmware(&clm, clm_name, dev); + if (err) { + if (err == -ENOENT) { + brcmf_dbg(INFO, "continue with CLM data currently present in firmware\n"); + return 0; + } + brcmf_err("request CLM blob file failed (%d)\n", err); + return err; + } + + chunk_buf = kzalloc(sizeof(*chunk_buf) + MAX_CHUNK_LEN - 1, GFP_KERNEL); + if (!chunk_buf) { + err = -ENOMEM; + goto done; + } + + datalen = clm->size; + cumulative_len = 0; + do { + if (datalen > MAX_CHUNK_LEN) { + chunk_len = MAX_CHUNK_LEN; + } else { + chunk_len = datalen; + dl_flag |= DL_END; + } + memcpy(chunk_buf->data, clm->data + cumulative_len, chunk_len); + + err = brcmf_c_download(ifp, dl_flag, chunk_buf, chunk_len); + + dl_flag &= ~DL_BEGIN; + + cumulative_len += chunk_len; + datalen -= chunk_len; + } while ((datalen > 0) && (err == 0)); + + if (err) { + brcmf_err("clmload (%zu byte file) failed (%d); ", + clm->size, err); + /* Retrieve clmload_status and print */ + err = brcmf_fil_iovar_int_get(ifp, "clmload_status", &status); + if (err) + brcmf_err("get clmload_status failed (%d)\n", err); + else + brcmf_dbg(INFO, "clmload_status=%d\n", status); + err = -EIO; + } + + kfree(chunk_buf); +done: + release_firmware(clm); + return err; +} + int brcmf_c_preinit_dcmds(struct brcmf_if *ifp) { s8 eventmask[BRCMF_EVENTING_MASK_LEN]; u8 buf[BRCMF_DCMD_SMLEN]; struct brcmf_rev_info_le revinfo; struct brcmf_rev_info *ri; + char *clmver; char *ptr; s32 err; @@ -148,6 +278,13 @@ int brcmf_c_preinit_dcmds(struct brcmf_if *ifp) } ri->result = err; + /* Do any CLM downloading */ + err = brcmf_c_process_clm_blob(ifp); + if (err < 0) { + brcmf_err("download CLM blob file failed, %d\n", err); + goto done; + } + /* query for 'ver' to get version info from firmware */ memset(buf, 0, sizeof(buf)); strcpy(buf, "ver"); @@ -167,6 +304,26 @@ int brcmf_c_preinit_dcmds(struct brcmf_if *ifp) ptr = strrchr(buf, ' ') + 1; strlcpy(ifp->drvr->fwver, ptr, sizeof(ifp->drvr->fwver)); + /* Query for 'clmver' to get CLM version info from firmware */ + memset(buf, 0, sizeof(buf)); + err = brcmf_fil_iovar_data_get(ifp, "clmver", buf, sizeof(buf)); + if (err) { + brcmf_dbg(TRACE, "retrieving clmver failed, %d\n", err); + } else { + clmver = (char *)buf; + /* store CLM version for adding it to revinfo debugfs file */ + memcpy(ifp->drvr->clmver, clmver, sizeof(ifp->drvr->clmver)); + + /* Replace all newline/linefeed characters with space + * character + */ + ptr = clmver; + while ((ptr = strnchr(ptr, '\n', sizeof(buf))) != NULL) + *ptr = ' '; + + brcmf_dbg(INFO, "CLM version = %s\n", clmver); + } + /* set mpc */ err = brcmf_fil_iovar_int_set(ifp, "mpc", 1); if (err) { |