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Message-ID: <01020191ec87b457-619e709d-46d1-4c57-b3df-d4e6fd13db5d-000000@eu-west-1.amazonses.com>
Date: Fri, 13 Sep 2024 17:56:42 +0000
From: Sebastian Reichel <sebastian.reichel@...labora.com>
To: Jacobe Zang <jacobe.zang@...ion.com>
Cc: Kalle Valo <kvalo@...nel.org>, "David S. Miller" <davem@...emloft.net>,
Eric Dumazet <edumazet@...gle.com>, Jakub Kicinski <kuba@...nel.org>,
Paolo Abeni <pabeni@...hat.com>, Rob Herring <robh@...nel.org>,
Krzysztof Kozlowski <krzk+dt@...nel.org>,
Conor Dooley <conor+dt@...nel.org>, van Spriel <arend@...adcom.com>,
Arend van Spriel <arend.vanspriel@...adcom.com>,
linux-wireless@...r.kernel.org, netdev@...r.kernel.org,
devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
brcm80211@...ts.linux.dev, brcm80211-dev-list.pdl@...adcom.com,
nick@...das.com, Ondrej Jirman <megi@....cz>
Subject: Re: [PATCH v14 4/4] wifi: brcmfmac: add flag for random seed during
firmware download
Hi,
On Tue, Sep 10, 2024 at 11:04:14AM GMT, Jacobe Zang wrote:
> Providing the random seed to firmware was tied to the fact that the
> device has a valid OTP, which worked for some Apple chips. However,
> it turns out the BCM43752 device also needs the random seed in order
> to get firmware running. Suspect it is simply tied to the firmware
> branch used for the device. Introducing a mechanism to allow setting
> it for a device through the device table.
>
> Co-developed-by: Ondrej Jirman <megi@....cz>
> Signed-off-by: Ondrej Jirman <megi@....cz>
> Co-developed-by: Arend van Spriel <arend.vanspriel@...adcom.com>
> Signed-off-by: Arend van Spriel <arend.vanspriel@...adcom.com>
> Signed-off-by: Jacobe Zang <jacobe.zang@...ion.com>
> ---
Reviewed-by: Sebastian Reichel <sebastian.reichel@...labora.com>
Tested-by: Sebastian Reichel <sebastian.reichel@...labora.com> # On RK3588 EVB1
Greetings,
-- Sebastian
> .../wireless/broadcom/brcm80211/brcmfmac/pcie.c | 52 ++++++++++++++++++----
> .../broadcom/brcm80211/include/brcm_hw_ids.h | 2 +
> 2 files changed, 46 insertions(+), 8 deletions(-)
>
> diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/pcie.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/pcie.c
> index 190e8990618c5..c0fdaa4dceda4 100644
> --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/pcie.c
> +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/pcie.c
> @@ -66,6 +66,7 @@ BRCMF_FW_DEF(4365C, "brcmfmac4365c-pcie");
> BRCMF_FW_DEF(4366B, "brcmfmac4366b-pcie");
> BRCMF_FW_DEF(4366C, "brcmfmac4366c-pcie");
> BRCMF_FW_DEF(4371, "brcmfmac4371-pcie");
> +BRCMF_FW_CLM_DEF(43752, "brcmfmac43752-pcie");
> BRCMF_FW_CLM_DEF(4377B3, "brcmfmac4377b3-pcie");
> BRCMF_FW_CLM_DEF(4378B1, "brcmfmac4378b1-pcie");
> BRCMF_FW_CLM_DEF(4378B3, "brcmfmac4378b3-pcie");
> @@ -104,6 +105,7 @@ static const struct brcmf_firmware_mapping brcmf_pcie_fwnames[] = {
> BRCMF_FW_ENTRY(BRCM_CC_43664_CHIP_ID, 0xFFFFFFF0, 4366C),
> BRCMF_FW_ENTRY(BRCM_CC_43666_CHIP_ID, 0xFFFFFFF0, 4366C),
> BRCMF_FW_ENTRY(BRCM_CC_4371_CHIP_ID, 0xFFFFFFFF, 4371),
> + BRCMF_FW_ENTRY(BRCM_CC_43752_CHIP_ID, 0xFFFFFFFF, 43752),
> BRCMF_FW_ENTRY(BRCM_CC_4377_CHIP_ID, 0xFFFFFFFF, 4377B3), /* revision ID 4 */
> BRCMF_FW_ENTRY(BRCM_CC_4378_CHIP_ID, 0x0000000F, 4378B1), /* revision ID 3 */
> BRCMF_FW_ENTRY(BRCM_CC_4378_CHIP_ID, 0xFFFFFFE0, 4378B3), /* revision ID 5 */
> @@ -353,6 +355,7 @@ struct brcmf_pciedev_info {
> u16 value);
> struct brcmf_mp_device *settings;
> struct brcmf_otp_params otp;
> + bool fwseed;
> #ifdef DEBUG
> u32 console_interval;
> bool console_active;
> @@ -1715,14 +1718,14 @@ static int brcmf_pcie_download_fw_nvram(struct brcmf_pciedev_info *devinfo,
> memcpy_toio(devinfo->tcm + address, nvram, nvram_len);
> brcmf_fw_nvram_free(nvram);
>
> - if (devinfo->otp.valid) {
> + if (devinfo->fwseed) {
> size_t rand_len = BRCMF_RANDOM_SEED_LENGTH;
> struct brcmf_random_seed_footer footer = {
> .length = cpu_to_le32(rand_len),
> .magic = cpu_to_le32(BRCMF_RANDOM_SEED_MAGIC),
> };
>
> - /* Some Apple chips/firmwares expect a buffer of random
> + /* Some chips/firmwares expect a buffer of random
> * data to be present before NVRAM
> */
> brcmf_dbg(PCIE, "Download random seed\n");
> @@ -2394,6 +2397,37 @@ static void brcmf_pcie_debugfs_create(struct device *dev)
> }
> #endif
>
> +struct brcmf_pcie_drvdata {
> + enum brcmf_fwvendor vendor;
> + bool fw_seed;
> +};
> +
> +enum {
> + BRCMF_DRVDATA_CYW,
> + BRCMF_DRVDATA_BCA,
> + BRCMF_DRVDATA_WCC,
> + BRCMF_DRVDATA_WCC_SEED,
> +};
> +
> +static const struct brcmf_pcie_drvdata drvdata[] = {
> + [BRCMF_DRVDATA_CYW] = {
> + .vendor = BRCMF_FWVENDOR_CYW,
> + .fw_seed = false,
> + },
> + [BRCMF_DRVDATA_BCA] = {
> + .vendor = BRCMF_FWVENDOR_BCA,
> + .fw_seed = false,
> + },
> + [BRCMF_DRVDATA_WCC] = {
> + .vendor = BRCMF_FWVENDOR_WCC,
> + .fw_seed = false,
> + },
> + [BRCMF_DRVDATA_WCC_SEED] = {
> + .vendor = BRCMF_FWVENDOR_WCC,
> + .fw_seed = true,
> + },
> +};
> +
> /* Forward declaration for pci_match_id() call */
> static const struct pci_device_id brcmf_pcie_devid_table[];
>
> @@ -2475,9 +2509,10 @@ brcmf_pcie_probe(struct pci_dev *pdev, const struct pci_device_id *id)
> bus->bus_priv.pcie = pcie_bus_dev;
> bus->ops = &brcmf_pcie_bus_ops;
> bus->proto_type = BRCMF_PROTO_MSGBUF;
> - bus->fwvid = id->driver_data;
> bus->chip = devinfo->coreid;
> bus->wowl_supported = pci_pme_capable(pdev, PCI_D3hot);
> + bus->fwvid = drvdata[id->driver_data].vendor;
> + devinfo->fwseed = drvdata[id->driver_data].fw_seed;
> dev_set_drvdata(&pdev->dev, bus);
>
> ret = brcmf_alloc(&devinfo->pdev->dev, devinfo->settings);
> @@ -2663,14 +2698,14 @@ static const struct dev_pm_ops brcmf_pciedrvr_pm = {
> BRCM_PCIE_VENDOR_ID_BROADCOM, (dev_id), \
> PCI_ANY_ID, PCI_ANY_ID, \
> PCI_CLASS_NETWORK_OTHER << 8, 0xffff00, \
> - BRCMF_FWVENDOR_ ## fw_vend \
> + BRCMF_DRVDATA_ ## fw_vend \
> }
> #define BRCMF_PCIE_DEVICE_SUB(dev_id, subvend, subdev, fw_vend) \
> { \
> BRCM_PCIE_VENDOR_ID_BROADCOM, (dev_id), \
> (subvend), (subdev), \
> PCI_CLASS_NETWORK_OTHER << 8, 0xffff00, \
> - BRCMF_FWVENDOR_ ## fw_vend \
> + BRCMF_DRVDATA_ ## fw_vend \
> }
>
> static const struct pci_device_id brcmf_pcie_devid_table[] = {
> @@ -2698,9 +2733,10 @@ static const struct pci_device_id brcmf_pcie_devid_table[] = {
> BRCMF_PCIE_DEVICE(BRCM_PCIE_4366_5G_DEVICE_ID, BCA),
> BRCMF_PCIE_DEVICE(BRCM_PCIE_4371_DEVICE_ID, WCC),
> BRCMF_PCIE_DEVICE(BRCM_PCIE_43596_DEVICE_ID, CYW),
> - BRCMF_PCIE_DEVICE(BRCM_PCIE_4377_DEVICE_ID, WCC),
> - BRCMF_PCIE_DEVICE(BRCM_PCIE_4378_DEVICE_ID, WCC),
> - BRCMF_PCIE_DEVICE(BRCM_PCIE_4387_DEVICE_ID, WCC),
> + BRCMF_PCIE_DEVICE(BRCM_PCIE_4377_DEVICE_ID, WCC_SEED),
> + BRCMF_PCIE_DEVICE(BRCM_PCIE_4378_DEVICE_ID, WCC_SEED),
> + BRCMF_PCIE_DEVICE(BRCM_PCIE_4387_DEVICE_ID, WCC_SEED),
> + BRCMF_PCIE_DEVICE(BRCM_PCIE_43752_DEVICE_ID, WCC_SEED),
>
> { /* end: all zeroes */ }
> };
> diff --git a/drivers/net/wireless/broadcom/brcm80211/include/brcm_hw_ids.h b/drivers/net/wireless/broadcom/brcm80211/include/brcm_hw_ids.h
> index 44684bf1b9acc..c1e22c589d85e 100644
> --- a/drivers/net/wireless/broadcom/brcm80211/include/brcm_hw_ids.h
> +++ b/drivers/net/wireless/broadcom/brcm80211/include/brcm_hw_ids.h
> @@ -52,6 +52,7 @@
> #define BRCM_CC_43664_CHIP_ID 43664
> #define BRCM_CC_43666_CHIP_ID 43666
> #define BRCM_CC_4371_CHIP_ID 0x4371
> +#define BRCM_CC_43752_CHIP_ID 43752
> #define BRCM_CC_4377_CHIP_ID 0x4377
> #define BRCM_CC_4378_CHIP_ID 0x4378
> #define BRCM_CC_4387_CHIP_ID 0x4387
> @@ -94,6 +95,7 @@
> #define BRCM_PCIE_4366_5G_DEVICE_ID 0x43c5
> #define BRCM_PCIE_4371_DEVICE_ID 0x440d
> #define BRCM_PCIE_43596_DEVICE_ID 0x4415
> +#define BRCM_PCIE_43752_DEVICE_ID 0x449d
> #define BRCM_PCIE_4377_DEVICE_ID 0x4488
> #define BRCM_PCIE_4378_DEVICE_ID 0x4425
> #define BRCM_PCIE_4387_DEVICE_ID 0x4433
>
> --
> 2.34.1
>
>
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