diff --git a/drivers/net/wireless/brcm80211/brcmfmac/firmware.c b/drivers/net/wireless/brcm80211/brcmfmac/firmware.c index 9cb99152ad1753e2bc2317589ce75df7abebd08b..8ff31ffa4a412ecb630baee5898a355df5ffb959 100644 --- a/drivers/net/wireless/brcm80211/brcmfmac/firmware.c +++ b/drivers/net/wireless/brcm80211/brcmfmac/firmware.c @@ -23,6 +23,10 @@ #include "debug.h" #include "firmware.h" +#define BRCMF_FW_MAX_NVRAM_SIZE 64000 +#define BRCMF_FW_NVRAM_DEVPATH_LEN 19 /* devpath0=pcie/1/4/ */ +#define BRCMF_FW_NVRAM_PCIEDEV_LEN 9 /* pcie/1/4/ */ + char brcmf_firmware_path[BRCMF_FW_PATH_LEN]; module_param_string(firmware_path, brcmf_firmware_path, BRCMF_FW_PATH_LEN, 0440); @@ -46,6 +50,8 @@ enum nvram_parser_state { * @column: current column in line. * @pos: byte offset in input buffer. * @entry: start position of key,value entry. + * @multi_dev_v1: detect pcie multi device v1 (compressed). + * @multi_dev_v2: detect pcie multi device v2. */ struct nvram_parser { enum nvram_parser_state state; @@ -56,6 +62,8 @@ struct nvram_parser { u32 column; u32 pos; u32 entry; + bool multi_dev_v1; + bool multi_dev_v2; }; static bool is_nvram_char(char c) @@ -108,6 +116,10 @@ static enum nvram_parser_state brcmf_nvram_handle_key(struct nvram_parser *nvp) st = COMMENT; else st = VALUE; + if (strncmp(&nvp->fwnv->data[nvp->entry], "devpath", 7) == 0) + nvp->multi_dev_v1 = true; + if (strncmp(&nvp->fwnv->data[nvp->entry], "pcie/", 5) == 0) + nvp->multi_dev_v2 = true; } else if (!is_nvram_char(c)) { brcmf_dbg(INFO, "warning: ln=%d:col=%d: '=' expected, skip invalid key entry\n", nvp->line, nvp->column); @@ -133,6 +145,8 @@ brcmf_nvram_handle_value(struct nvram_parser *nvp) ekv = (u8 *)&nvp->fwnv->data[nvp->pos]; skv = (u8 *)&nvp->fwnv->data[nvp->entry]; cplen = ekv - skv; + if (nvp->nvram_len + cplen + 1 >= BRCMF_FW_MAX_NVRAM_SIZE) + return END; /* copy to output buffer */ memcpy(&nvp->nvram[nvp->nvram_len], skv, cplen); nvp->nvram_len += cplen; @@ -180,10 +194,18 @@ static enum nvram_parser_state static int brcmf_init_nvram_parser(struct nvram_parser *nvp, const struct firmware *nv) { + size_t size; + memset(nvp, 0, sizeof(*nvp)); nvp->fwnv = nv; + /* Limit size to MAX_NVRAM_SIZE, some files contain lot of comment */ + if (nv->size > BRCMF_FW_MAX_NVRAM_SIZE) + size = BRCMF_FW_MAX_NVRAM_SIZE; + else + size = nv->size; /* Alloc for extra 0 byte + roundup by 4 + length field */ - nvp->nvram = kzalloc(nv->size + 1 + 3 + sizeof(u32), GFP_KERNEL); + size += 1 + 3 + sizeof(u32); + nvp->nvram = kzalloc(size, GFP_KERNEL); if (!nvp->nvram) return -ENOMEM; @@ -192,12 +214,136 @@ static int brcmf_init_nvram_parser(struct nvram_parser *nvp, return 0; } +/* brcmf_fw_strip_multi_v1 :Some nvram files contain settings for multiple + * devices. Strip it down for one device, use domain_nr/bus_nr to determine + * which data is to be returned. v1 is the version where nvram is stored + * compressed and "devpath" maps to index for valid entries. + */ +static void brcmf_fw_strip_multi_v1(struct nvram_parser *nvp, u16 domain_nr, + u16 bus_nr) +{ + u32 i, j; + bool found; + u8 *nvram; + u8 id; + + nvram = kzalloc(nvp->nvram_len + 1 + 3 + sizeof(u32), GFP_KERNEL); + if (!nvram) + goto fail; + + /* min length: devpath0=pcie/1/4/ + 0:x=y */ + if (nvp->nvram_len < BRCMF_FW_NVRAM_DEVPATH_LEN + 6) + goto fail; + + /* First search for the devpathX and see if it is the configuration + * for domain_nr/bus_nr. Search complete nvp + */ + found = false; + i = 0; + while (i < nvp->nvram_len - BRCMF_FW_NVRAM_DEVPATH_LEN) { + /* Format: devpathX=pcie/Y/Z/ + * Y = domain_nr, Z = bus_nr, X = virtual ID + */ + if ((strncmp(&nvp->nvram[i], "devpath", 7) == 0) && + (strncmp(&nvp->nvram[i + 8], "=pcie/", 6) == 0)) { + if (((nvp->nvram[i + 14] - '0') == domain_nr) && + ((nvp->nvram[i + 16] - '0') == bus_nr)) { + id = nvp->nvram[i + 7] - '0'; + found = true; + break; + } + } + while (nvp->nvram[i] != 0) + i++; + i++; + } + if (!found) + goto fail; + + /* Now copy all valid entries, release old nvram and assign new one */ + i = 0; + j = 0; + while (i < nvp->nvram_len) { + if ((nvp->nvram[i] - '0' == id) && (nvp->nvram[i + 1] == ':')) { + i += 2; + while (nvp->nvram[i] != 0) { + nvram[j] = nvp->nvram[i]; + i++; + j++; + } + nvram[j] = 0; + j++; + } + while (nvp->nvram[i] != 0) + i++; + i++; + } + kfree(nvp->nvram); + nvp->nvram = nvram; + nvp->nvram_len = j; + return; + +fail: + kfree(nvram); + nvp->nvram_len = 0; +} + +/* brcmf_fw_strip_multi_v2 :Some nvram files contain settings for multiple + * devices. Strip it down for one device, use domain_nr/bus_nr to determine + * which data is to be returned. v2 is the version where nvram is stored + * uncompressed, all relevant valid entries are identified by + * pcie/domain_nr/bus_nr: + */ +static void brcmf_fw_strip_multi_v2(struct nvram_parser *nvp, u16 domain_nr, + u16 bus_nr) +{ + u32 i, j; + u8 *nvram; + + nvram = kzalloc(nvp->nvram_len + 1 + 3 + sizeof(u32), GFP_KERNEL); + if (!nvram) + goto fail; + + /* Copy all valid entries, release old nvram and assign new one. + * Valid entries are of type pcie/X/Y/ where X = domain_nr and + * Y = bus_nr. + */ + i = 0; + j = 0; + while (i < nvp->nvram_len - BRCMF_FW_NVRAM_PCIEDEV_LEN) { + if ((strncmp(&nvp->nvram[i], "pcie/", 5) == 0) && + (nvp->nvram[i + 6] == '/') && (nvp->nvram[i + 8] == '/') && + ((nvp->nvram[i + 5] - '0') == domain_nr) && + ((nvp->nvram[i + 7] - '0') == bus_nr)) { + i += BRCMF_FW_NVRAM_PCIEDEV_LEN; + while (nvp->nvram[i] != 0) { + nvram[j] = nvp->nvram[i]; + i++; + j++; + } + nvram[j] = 0; + j++; + } + while (nvp->nvram[i] != 0) + i++; + i++; + } + kfree(nvp->nvram); + nvp->nvram = nvram; + nvp->nvram_len = j; + return; +fail: + kfree(nvram); + nvp->nvram_len = 0; +} + /* brcmf_nvram_strip :Takes a buffer of "=\n" lines read from a fil * and ending in a NUL. Removes carriage returns, empty lines, comment lines, * and converts newlines to NULs. Shortens buffer as needed and pads with NULs. * End of buffer is completed with token identifying length of buffer. */ -static void *brcmf_fw_nvram_strip(const struct firmware *nv, u32 *new_length) +static void *brcmf_fw_nvram_strip(const struct firmware *nv, u32 *new_length, + u16 domain_nr, u16 bus_nr) { struct nvram_parser nvp; u32 pad; @@ -212,6 +358,16 @@ static void *brcmf_fw_nvram_strip(const struct firmware *nv, u32 *new_length) if (nvp.state == END) break; } + if (nvp.multi_dev_v1) + brcmf_fw_strip_multi_v1(&nvp, domain_nr, bus_nr); + else if (nvp.multi_dev_v2) + brcmf_fw_strip_multi_v2(&nvp, domain_nr, bus_nr); + + if (nvp.nvram_len == 0) { + kfree(nvp.nvram); + return NULL; + } + pad = nvp.nvram_len; *new_length = roundup(nvp.nvram_len + 1, 4); while (pad != *new_length) { @@ -239,6 +395,8 @@ struct brcmf_fw { u16 flags; const struct firmware *code; const char *nvram_name; + u16 domain_nr; + u16 bus_nr; void (*done)(struct device *dev, const struct firmware *fw, void *nvram_image, u32 nvram_len); }; @@ -254,7 +412,8 @@ static void brcmf_fw_request_nvram_done(const struct firmware *fw, void *ctx) goto fail; if (fw) { - nvram = brcmf_fw_nvram_strip(fw, &nvram_length); + nvram = brcmf_fw_nvram_strip(fw, &nvram_length, + fwctx->domain_nr, fwctx->bus_nr); release_firmware(fw); if (!nvram && !(fwctx->flags & BRCMF_FW_REQ_NV_OPTIONAL)) goto fail; @@ -309,11 +468,12 @@ static void brcmf_fw_request_code_done(const struct firmware *fw, void *ctx) kfree(fwctx); } -int brcmf_fw_get_firmwares(struct device *dev, u16 flags, - const char *code, const char *nvram, - void (*fw_cb)(struct device *dev, - const struct firmware *fw, - void *nvram_image, u32 nvram_len)) +int brcmf_fw_get_firmwares_pcie(struct device *dev, u16 flags, + const char *code, const char *nvram, + void (*fw_cb)(struct device *dev, + const struct firmware *fw, + void *nvram_image, u32 nvram_len), + u16 domain_nr, u16 bus_nr) { struct brcmf_fw *fwctx; @@ -333,8 +493,21 @@ int brcmf_fw_get_firmwares(struct device *dev, u16 flags, fwctx->done = fw_cb; if (flags & BRCMF_FW_REQUEST_NVRAM) fwctx->nvram_name = nvram; + fwctx->domain_nr = domain_nr; + fwctx->bus_nr = bus_nr; return request_firmware_nowait(THIS_MODULE, true, code, dev, GFP_KERNEL, fwctx, brcmf_fw_request_code_done); } + +int brcmf_fw_get_firmwares(struct device *dev, u16 flags, + const char *code, const char *nvram, + void (*fw_cb)(struct device *dev, + const struct firmware *fw, + void *nvram_image, u32 nvram_len)) +{ + return brcmf_fw_get_firmwares_pcie(dev, flags, code, nvram, fw_cb, 0, + 0); +} + diff --git a/drivers/net/wireless/brcm80211/brcmfmac/firmware.h b/drivers/net/wireless/brcm80211/brcmfmac/firmware.h index 4d3482356b77b0e068e1dc095b8888a7c8477094..604dd48ab4e095062a4b2f59e592c2dcf01d2878 100644 --- a/drivers/net/wireless/brcm80211/brcmfmac/firmware.h +++ b/drivers/net/wireless/brcm80211/brcmfmac/firmware.h @@ -32,6 +32,12 @@ void brcmf_fw_nvram_free(void *nvram); * fails it will not use the callback, but call device_release_driver() * instead which will call the driver .remove() callback. */ +int brcmf_fw_get_firmwares_pcie(struct device *dev, u16 flags, + const char *code, const char *nvram, + void (*fw_cb)(struct device *dev, + const struct firmware *fw, + void *nvram_image, u32 nvram_len), + u16 domain_nr, u16 bus_nr); int brcmf_fw_get_firmwares(struct device *dev, u16 flags, const char *code, const char *nvram, void (*fw_cb)(struct device *dev, diff --git a/drivers/net/wireless/brcm80211/brcmfmac/pcie.c b/drivers/net/wireless/brcm80211/brcmfmac/pcie.c index 5e97a975a2fc7ce79fbb252423e22bf03f27b77b..0453d1084b2e7be112673607e8df1c72b8fed040 100644 --- a/drivers/net/wireless/brcm80211/brcmfmac/pcie.c +++ b/drivers/net/wireless/brcm80211/brcmfmac/pcie.c @@ -1649,8 +1649,13 @@ brcmf_pcie_probe(struct pci_dev *pdev, const struct pci_device_id *id) struct brcmf_pciedev_info *devinfo; struct brcmf_pciedev *pcie_bus_dev; struct brcmf_bus *bus; + u16 domain_nr; + u16 bus_nr; - brcmf_dbg(PCIE, "Enter %x:%x\n", pdev->vendor, pdev->device); + domain_nr = pci_domain_nr(pdev->bus) + 1; + bus_nr = pdev->bus->number; + brcmf_dbg(PCIE, "Enter %x:%x (%d/%d)\n", pdev->vendor, pdev->device, + domain_nr, bus_nr); ret = -ENOMEM; devinfo = kzalloc(sizeof(*devinfo), GFP_KERNEL); @@ -1699,10 +1704,10 @@ brcmf_pcie_probe(struct pci_dev *pdev, const struct pci_device_id *id) if (ret) goto fail_bus; - ret = brcmf_fw_get_firmwares(bus->dev, BRCMF_FW_REQUEST_NVRAM | - BRCMF_FW_REQ_NV_OPTIONAL, - devinfo->fw_name, devinfo->nvram_name, - brcmf_pcie_setup); + ret = brcmf_fw_get_firmwares_pcie(bus->dev, BRCMF_FW_REQUEST_NVRAM | + BRCMF_FW_REQ_NV_OPTIONAL, + devinfo->fw_name, devinfo->nvram_name, + brcmf_pcie_setup, domain_nr, bus_nr); if (ret == 0) return 0; fail_bus: