diff --git a/drivers/net/wireless/b43/b43.h b/drivers/net/wireless/b43/b43.h index a53c378e7484..9e0da212f8ce 100644 --- a/drivers/net/wireless/b43/b43.h +++ b/drivers/net/wireless/b43/b43.h @@ -655,10 +655,39 @@ struct b43_wl { struct work_struct txpower_adjust_work; }; +/* The type of the firmware file. */ +enum b43_firmware_file_type { + B43_FWTYPE_PROPRIETARY, + B43_FWTYPE_OPENSOURCE, + B43_NR_FWTYPES, +}; + +/* Context data for fetching firmware. */ +struct b43_request_fw_context { + /* The device we are requesting the fw for. */ + struct b43_wldev *dev; + /* The type of firmware to request. */ + enum b43_firmware_file_type req_type; + /* Error messages for each firmware type. */ + char errors[B43_NR_FWTYPES][128]; + /* Temporary buffer for storing the firmware name. */ + char fwname[64]; + /* A fatal error occured while requesting. Firmware reqest + * can not continue, as any other reqest will also fail. */ + int fatal_failure; +}; + /* In-memory representation of a cached microcode file. */ struct b43_firmware_file { const char *filename; const struct firmware *data; + /* Type of the firmware file name. Note that this does only indicate + * the type by the firmware name. NOT the file contents. + * If you want to check for proprietary vs opensource, use (struct b43_firmware)->opensource + * instead! The (struct b43_firmware)->opensource flag is derived from the actual firmware + * binary code, not just the filename. + */ + enum b43_firmware_file_type type; }; /* Pointers to the firmware data and meta information about it. */ @@ -677,7 +706,8 @@ struct b43_firmware { /* Firmware patchlevel */ u16 patch; - /* Set to true, if we are using an opensource firmware. */ + /* Set to true, if we are using an opensource firmware. + * Use this to check for proprietary vs opensource. */ bool opensource; /* Set to true, if the core needs a PCM firmware, but * we failed to load one. This is always false for diff --git a/drivers/net/wireless/b43/main.c b/drivers/net/wireless/b43/main.c index 675a73a98072..cbb3d45f6fc9 100644 --- a/drivers/net/wireless/b43/main.c +++ b/drivers/net/wireless/b43/main.c @@ -1934,7 +1934,7 @@ static irqreturn_t b43_interrupt_handler(int irq, void *dev_id) return ret; } -static void do_release_fw(struct b43_firmware_file *fw) +void b43_do_release_fw(struct b43_firmware_file *fw) { release_firmware(fw->data); fw->data = NULL; @@ -1943,10 +1943,10 @@ static void do_release_fw(struct b43_firmware_file *fw) static void b43_release_firmware(struct b43_wldev *dev) { - do_release_fw(&dev->fw.ucode); - do_release_fw(&dev->fw.pcm); - do_release_fw(&dev->fw.initvals); - do_release_fw(&dev->fw.initvals_band); + b43_do_release_fw(&dev->fw.ucode); + b43_do_release_fw(&dev->fw.pcm); + b43_do_release_fw(&dev->fw.initvals); + b43_do_release_fw(&dev->fw.initvals_band); } static void b43_print_fw_helptext(struct b43_wl *wl, bool error) @@ -1963,12 +1963,10 @@ static void b43_print_fw_helptext(struct b43_wl *wl, bool error) b43warn(wl, text); } -static int do_request_fw(struct b43_wldev *dev, - const char *name, - struct b43_firmware_file *fw, - bool silent) +int b43_do_request_fw(struct b43_request_fw_context *ctx, + const char *name, + struct b43_firmware_file *fw) { - char path[sizeof(modparam_fwpostfix) + 32]; const struct firmware *blob; struct b43_fw_header *hdr; u32 size; @@ -1976,29 +1974,49 @@ static int do_request_fw(struct b43_wldev *dev, if (!name) { /* Don't fetch anything. Free possibly cached firmware. */ - do_release_fw(fw); + /* FIXME: We should probably keep it anyway, to save some headache + * on suspend/resume with multiband devices. */ + b43_do_release_fw(fw); return 0; } if (fw->filename) { - if (strcmp(fw->filename, name) == 0) + if ((fw->type == ctx->req_type) && + (strcmp(fw->filename, name) == 0)) return 0; /* Already have this fw. */ /* Free the cached firmware first. */ - do_release_fw(fw); + /* FIXME: We should probably do this later after we successfully + * got the new fw. This could reduce headache with multiband devices. + * We could also redesign this to cache the firmware for all possible + * bands all the time. */ + b43_do_release_fw(fw); } - snprintf(path, ARRAY_SIZE(path), - "b43%s/%s.fw", - modparam_fwpostfix, name); - err = request_firmware(&blob, path, dev->dev->dev); + switch (ctx->req_type) { + case B43_FWTYPE_PROPRIETARY: + snprintf(ctx->fwname, sizeof(ctx->fwname), + "b43%s/%s.fw", + modparam_fwpostfix, name); + break; + case B43_FWTYPE_OPENSOURCE: + snprintf(ctx->fwname, sizeof(ctx->fwname), + "b43-open%s/%s.fw", + modparam_fwpostfix, name); + break; + default: + B43_WARN_ON(1); + return -ENOSYS; + } + err = request_firmware(&blob, ctx->fwname, ctx->dev->dev->dev); if (err == -ENOENT) { - if (!silent) { - b43err(dev->wl, "Firmware file \"%s\" not found\n", - path); - } + snprintf(ctx->errors[ctx->req_type], + sizeof(ctx->errors[ctx->req_type]), + "Firmware file \"%s\" not found\n", ctx->fwname); return err; } else if (err) { - b43err(dev->wl, "Firmware file \"%s\" request failed (err=%d)\n", - path, err); + snprintf(ctx->errors[ctx->req_type], + sizeof(ctx->errors[ctx->req_type]), + "Firmware file \"%s\" request failed (err=%d)\n", + ctx->fwname, err); return err; } if (blob->size < sizeof(struct b43_fw_header)) @@ -2021,20 +2039,24 @@ static int do_request_fw(struct b43_wldev *dev, fw->data = blob; fw->filename = name; + fw->type = ctx->req_type; return 0; err_format: - b43err(dev->wl, "Firmware file \"%s\" format error.\n", path); + snprintf(ctx->errors[ctx->req_type], + sizeof(ctx->errors[ctx->req_type]), + "Firmware file \"%s\" format error.\n", ctx->fwname); release_firmware(blob); return -EPROTO; } -static int b43_request_firmware(struct b43_wldev *dev) +static int b43_try_request_fw(struct b43_request_fw_context *ctx) { - struct b43_firmware *fw = &dev->fw; - const u8 rev = dev->dev->id.revision; + struct b43_wldev *dev = ctx->dev; + struct b43_firmware *fw = &ctx->dev->fw; + const u8 rev = ctx->dev->dev->id.revision; const char *filename; u32 tmshigh; int err; @@ -2049,7 +2071,7 @@ static int b43_request_firmware(struct b43_wldev *dev) filename = "ucode13"; else goto err_no_ucode; - err = do_request_fw(dev, filename, &fw->ucode, 0); + err = b43_do_request_fw(ctx, filename, &fw->ucode); if (err) goto err_load; @@ -2061,7 +2083,7 @@ static int b43_request_firmware(struct b43_wldev *dev) else goto err_no_pcm; fw->pcm_request_failed = 0; - err = do_request_fw(dev, filename, &fw->pcm, 1); + err = b43_do_request_fw(ctx, filename, &fw->pcm); if (err == -ENOENT) { /* We did not find a PCM file? Not fatal, but * core rev <= 10 must do without hwcrypto then. */ @@ -2097,7 +2119,7 @@ static int b43_request_firmware(struct b43_wldev *dev) default: goto err_no_initvals; } - err = do_request_fw(dev, filename, &fw->initvals, 0); + err = b43_do_request_fw(ctx, filename, &fw->initvals); if (err) goto err_load; @@ -2131,30 +2153,34 @@ static int b43_request_firmware(struct b43_wldev *dev) default: goto err_no_initvals; } - err = do_request_fw(dev, filename, &fw->initvals_band, 0); + err = b43_do_request_fw(ctx, filename, &fw->initvals_band); if (err) goto err_load; return 0; -err_load: - b43_print_fw_helptext(dev->wl, 1); - goto error; - err_no_ucode: - err = -ENODEV; - b43err(dev->wl, "No microcode available for core rev %u\n", rev); + err = ctx->fatal_failure = -EOPNOTSUPP; + b43err(dev->wl, "The driver does not know which firmware (ucode) " + "is required for your device (wl-core rev %u)\n", rev); goto error; err_no_pcm: - err = -ENODEV; - b43err(dev->wl, "No PCM available for core rev %u\n", rev); + err = ctx->fatal_failure = -EOPNOTSUPP; + b43err(dev->wl, "The driver does not know which firmware (PCM) " + "is required for your device (wl-core rev %u)\n", rev); goto error; err_no_initvals: - err = -ENODEV; - b43err(dev->wl, "No Initial Values firmware file for PHY %u, " - "core rev %u\n", dev->phy.type, rev); + err = ctx->fatal_failure = -EOPNOTSUPP; + b43err(dev->wl, "The driver does not know which firmware (initvals) " + "is required for your device (wl-core rev %u)\n", rev); + goto error; + +err_load: + /* We failed to load this firmware image. The error message + * already is in ctx->errors. Return and let our caller decide + * what to do. */ goto error; error: @@ -2162,6 +2188,48 @@ static int b43_request_firmware(struct b43_wldev *dev) return err; } +static int b43_request_firmware(struct b43_wldev *dev) +{ + struct b43_request_fw_context *ctx; + unsigned int i; + int err; + const char *errmsg; + + ctx = kzalloc(sizeof(*ctx), GFP_KERNEL); + if (!ctx) + return -ENOMEM; + ctx->dev = dev; + + ctx->req_type = B43_FWTYPE_PROPRIETARY; + err = b43_try_request_fw(ctx); + if (!err) + goto out; /* Successfully loaded it. */ + err = ctx->fatal_failure; + if (err) + goto out; + + ctx->req_type = B43_FWTYPE_OPENSOURCE; + err = b43_try_request_fw(ctx); + if (!err) + goto out; /* Successfully loaded it. */ + err = ctx->fatal_failure; + if (err) + goto out; + + /* Could not find a usable firmware. Print the errors. */ + for (i = 0; i < B43_NR_FWTYPES; i++) { + errmsg = ctx->errors[i]; + if (strlen(errmsg)) + b43err(dev->wl, errmsg); + } + b43_print_fw_helptext(dev->wl, 1); + err = -ENOENT; + +out: + kfree(ctx); + return err; +} + static int b43_upload_microcode(struct b43_wldev *dev) { const size_t hdr_len = sizeof(struct b43_fw_header); diff --git a/drivers/net/wireless/b43/main.h b/drivers/net/wireless/b43/main.h index f871a252cb55..e6d90f377d9b 100644 --- a/drivers/net/wireless/b43/main.h +++ b/drivers/net/wireless/b43/main.h @@ -121,4 +121,11 @@ void b43_power_saving_ctl_bits(struct b43_wldev *dev, unsigned int ps_flags); void b43_mac_suspend(struct b43_wldev *dev); void b43_mac_enable(struct b43_wldev *dev); + +struct b43_request_fw_context; +int b43_do_request_fw(struct b43_request_fw_context *ctx, + const char *name, + struct b43_firmware_file *fw); +void b43_do_release_fw(struct b43_firmware_file *fw); + #endif /* B43_MAIN_H_ */