From patchwork Mon Mar 2 15:55:25 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nicolas Saenz Julienne X-Patchwork-Id: 11415763 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id E342492A for ; Mon, 2 Mar 2020 15:56:06 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id CC14921D56 for ; Mon, 2 Mar 2020 15:56:06 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727335AbgCBP4G (ORCPT ); Mon, 2 Mar 2020 10:56:06 -0500 Received: from mx2.suse.de ([195.135.220.15]:51256 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727000AbgCBP4G (ORCPT ); Mon, 2 Mar 2020 10:56:06 -0500 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.220.254]) by mx2.suse.de (Postfix) with ESMTP id EE405AB6D; Mon, 2 Mar 2020 15:56:03 +0000 (UTC) From: Nicolas Saenz Julienne To: linux-kernel@vger.kernel.org, Nicolas Saenz Julienne , Florian Fainelli , Ray Jui , Scott Branden , bcm-kernel-feedback-list@broadcom.com Cc: linux-usb@vger.kernel.org, linux-rpi-kernel@lists.infradead.org, linux-arm-kernel@lists.infradead.org, gregkh@linuxfoundation.org, tim.gover@raspberrypi.org, linux-pci@vger.kernel.org, wahrenst@gmx.net Subject: [PATCH v3 1/4] soc: bcm2835: Sync xHCI reset firmware property with downstream Date: Mon, 2 Mar 2020 16:55:25 +0100 Message-Id: <20200302155528.19505-2-nsaenzjulienne@suse.de> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200302155528.19505-1-nsaenzjulienne@suse.de> References: <20200302155528.19505-1-nsaenzjulienne@suse.de> MIME-Version: 1.0 Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org The property is needed in order to trigger VL805's firmware load. Note that there is a gap between the property introduced and the previous one. This is also the case downstream. Signed-off-by: Nicolas Saenz Julienne Reviewed-by: Florian Fainelli --- include/soc/bcm2835/raspberrypi-firmware.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/soc/bcm2835/raspberrypi-firmware.h b/include/soc/bcm2835/raspberrypi-firmware.h index 7800e12ee042..cc9cdbc66403 100644 --- a/include/soc/bcm2835/raspberrypi-firmware.h +++ b/include/soc/bcm2835/raspberrypi-firmware.h @@ -90,7 +90,7 @@ enum rpi_firmware_property_tag { RPI_FIRMWARE_SET_PERIPH_REG = 0x00038045, RPI_FIRMWARE_GET_POE_HAT_VAL = 0x00030049, RPI_FIRMWARE_SET_POE_HAT_VAL = 0x00030050, - + RPI_FIRMWARE_NOTIFY_XHCI_RESET = 0x00030058, /* Dispmanx TAGS */ RPI_FIRMWARE_FRAMEBUFFER_ALLOCATE = 0x00040001, From patchwork Mon Mar 2 15:55:26 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nicolas Saenz Julienne X-Patchwork-Id: 11415773 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id E0FE7174A for ; Mon, 2 Mar 2020 15:56:21 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id CB15C2467B for ; Mon, 2 Mar 2020 15:56:21 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727417AbgCBP4J (ORCPT ); Mon, 2 Mar 2020 10:56:09 -0500 Received: from mx2.suse.de ([195.135.220.15]:51296 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727328AbgCBP4H (ORCPT ); Mon, 2 Mar 2020 10:56:07 -0500 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.220.254]) by mx2.suse.de (Postfix) with ESMTP id B0C2EAED7; Mon, 2 Mar 2020 15:56:04 +0000 (UTC) From: Nicolas Saenz Julienne To: linux-kernel@vger.kernel.org, Nicolas Saenz Julienne , Florian Fainelli , Ray Jui , Scott Branden , bcm-kernel-feedback-list@broadcom.com Cc: linux-usb@vger.kernel.org, linux-rpi-kernel@lists.infradead.org, linux-arm-kernel@lists.infradead.org, gregkh@linuxfoundation.org, tim.gover@raspberrypi.org, linux-pci@vger.kernel.org, wahrenst@gmx.net Subject: [PATCH v3 2/4] firmware: raspberrypi: Introduce vl805 init routine Date: Mon, 2 Mar 2020 16:55:26 +0100 Message-Id: <20200302155528.19505-3-nsaenzjulienne@suse.de> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200302155528.19505-1-nsaenzjulienne@suse.de> References: <20200302155528.19505-1-nsaenzjulienne@suse.de> MIME-Version: 1.0 Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org On the Raspberry Pi 4, after a PCI reset, VL805's firmware may either be loaded directly from an EEPROM or, if not present, by the SoC's VideCore. The function informs VideCore that VL805 was just reset, or requests for a probe defer. Based on Tim Gover's downstream implementation. Signed-off-by: Nicolas Saenz Julienne Reviewed-by: Florian Fainelli --- Changes since v1: - Move include into .c file and add forward declaration to .h drivers/firmware/raspberrypi.c | 38 ++++++++++++++++++++++ include/soc/bcm2835/raspberrypi-firmware.h | 7 ++++ 2 files changed, 45 insertions(+) diff --git a/drivers/firmware/raspberrypi.c b/drivers/firmware/raspberrypi.c index da26a584dca0..cbb495aff6a0 100644 --- a/drivers/firmware/raspberrypi.c +++ b/drivers/firmware/raspberrypi.c @@ -12,6 +12,7 @@ #include #include #include +#include #include #define MBOX_MSG(chan, data28) (((data28) & ~0xf) | ((chan) & 0xf)) @@ -286,6 +287,43 @@ struct rpi_firmware *rpi_firmware_get(struct device_node *firmware_node) } EXPORT_SYMBOL_GPL(rpi_firmware_get); +/* + * On the Raspberry Pi 4, after a PCI reset, VL805's firmware may either be + * loaded directly from an EEPROM or, if not present, by the SoC's VideCore. + * Inform VideCore that VL805 was just reset, or defer xhci's probe if not yet + * joinable trough the mailbox interface. + */ +int rpi_firmware_init_vl805(struct pci_dev *pdev) +{ + struct device_node *fw_np; + struct rpi_firmware *fw; + u32 dev_addr; + int ret; + + fw_np = of_find_compatible_node(NULL, NULL, + "raspberrypi,bcm2835-firmware"); + if (!fw_np) + return 0; + + fw = rpi_firmware_get(fw_np); + of_node_put(fw_np); + if (!fw) + return -EPROBE_DEFER; + + dev_addr = pdev->bus->number << 20 | PCI_SLOT(pdev->devfn) << 15 | + PCI_FUNC(pdev->devfn) << 12; + + ret = rpi_firmware_property(fw, RPI_FIRMWARE_NOTIFY_XHCI_RESET, + &dev_addr, sizeof(dev_addr)); + if (ret) + return ret; + + dev_dbg(&pdev->dev, "loaded Raspberry Pi's VL805 firmware\n"); + + return 0; +} +EXPORT_SYMBOL_GPL(rpi_firmware_init_vl805); + static const struct of_device_id rpi_firmware_of_match[] = { { .compatible = "raspberrypi,bcm2835-firmware", }, {}, diff --git a/include/soc/bcm2835/raspberrypi-firmware.h b/include/soc/bcm2835/raspberrypi-firmware.h index cc9cdbc66403..c161bdab759d 100644 --- a/include/soc/bcm2835/raspberrypi-firmware.h +++ b/include/soc/bcm2835/raspberrypi-firmware.h @@ -10,6 +10,7 @@ #include struct rpi_firmware; +struct pci_dev; enum rpi_firmware_property_status { RPI_FIRMWARE_STATUS_REQUEST = 0, @@ -141,6 +142,7 @@ int rpi_firmware_property(struct rpi_firmware *fw, int rpi_firmware_property_list(struct rpi_firmware *fw, void *data, size_t tag_size); struct rpi_firmware *rpi_firmware_get(struct device_node *firmware_node); +int rpi_firmware_init_vl805(struct pci_dev *pdev); #else static inline int rpi_firmware_property(struct rpi_firmware *fw, u32 tag, void *data, size_t len) @@ -158,6 +160,11 @@ static inline struct rpi_firmware *rpi_firmware_get(struct device_node *firmware { return NULL; } + +static int rpi_firmware_init_vl805(struct pci_dev *pdev) +{ + return 0; +} #endif #endif /* __SOC_RASPBERRY_FIRMWARE_H__ */ From patchwork Mon Mar 2 15:55:27 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nicolas Saenz Julienne X-Patchwork-Id: 11415771 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id C0E6492A for ; Mon, 2 Mar 2020 15:56:21 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id A08A624673 for ; Mon, 2 Mar 2020 15:56:21 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727408AbgCBP4J (ORCPT ); Mon, 2 Mar 2020 10:56:09 -0500 Received: from mx2.suse.de ([195.135.220.15]:51324 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727381AbgCBP4H (ORCPT ); Mon, 2 Mar 2020 10:56:07 -0500 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.220.254]) by mx2.suse.de (Postfix) with ESMTP id 15151AEDE; Mon, 2 Mar 2020 15:56:06 +0000 (UTC) From: Nicolas Saenz Julienne To: linux-kernel@vger.kernel.org, Florian Fainelli , bcm-kernel-feedback-list@broadcom.com, Nicolas Saenz Julienne , Lorenzo Pieralisi , Andrew Murray Cc: linux-usb@vger.kernel.org, linux-rpi-kernel@lists.infradead.org, linux-arm-kernel@lists.infradead.org, gregkh@linuxfoundation.org, tim.gover@raspberrypi.org, linux-pci@vger.kernel.org, wahrenst@gmx.net, Bjorn Helgaas Subject: [PATCH v3 3/4] PCI: brcmstb: Wait for Raspberry Pi's firmware when present Date: Mon, 2 Mar 2020 16:55:27 +0100 Message-Id: <20200302155528.19505-4-nsaenzjulienne@suse.de> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200302155528.19505-1-nsaenzjulienne@suse.de> References: <20200302155528.19505-1-nsaenzjulienne@suse.de> MIME-Version: 1.0 Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org xHCI's PCI fixup, run at the end of pcie-brcmstb's probe, depends on RPi4's VideoCore firmware interface to be up and running. It's possible for both initializations to race, so make sure it's available prior starting. Signed-off-by: Nicolas Saenz Julienne Reviewed-by: Florian Fainelli --- drivers/pci/controller/pcie-brcmstb.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/drivers/pci/controller/pcie-brcmstb.c b/drivers/pci/controller/pcie-brcmstb.c index 3a10e678c7f4..a3d3070a5832 100644 --- a/drivers/pci/controller/pcie-brcmstb.c +++ b/drivers/pci/controller/pcie-brcmstb.c @@ -28,6 +28,8 @@ #include #include +#include + #include "../pci.h" /* BRCM_PCIE_CAP_REGS - Offset for the mandatory capability config regs */ @@ -917,11 +919,24 @@ static int brcm_pcie_probe(struct platform_device *pdev) { struct device_node *np = pdev->dev.of_node, *msi_np; struct pci_host_bridge *bridge; + struct device_node *fw_np; struct brcm_pcie *pcie; struct pci_bus *child; struct resource *res; int ret; + /* + * We have to wait for the Raspberry Pi's firmware interface to be up + * as some PCI fixups depend on it. + */ + fw_np = of_find_compatible_node(NULL, NULL, + "raspberrypi,bcm2835-firmware"); + if (fw_np && !rpi_firmware_get(fw_np)) { + of_node_put(fw_np); + return -EPROBE_DEFER; + } + of_node_put(fw_np); + bridge = devm_pci_alloc_host_bridge(&pdev->dev, sizeof(*pcie)); if (!bridge) return -ENOMEM; From patchwork Mon Mar 2 15:55:28 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nicolas Saenz Julienne X-Patchwork-Id: 11415779 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 072FD92A for ; Mon, 2 Mar 2020 15:56:27 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id E525824676 for ; Mon, 2 Mar 2020 15:56:26 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727326AbgCBP4W (ORCPT ); Mon, 2 Mar 2020 10:56:22 -0500 Received: from mx2.suse.de ([195.135.220.15]:51348 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727306AbgCBP4J (ORCPT ); Mon, 2 Mar 2020 10:56:09 -0500 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.220.254]) by mx2.suse.de (Postfix) with ESMTP id E0C1BAF00; Mon, 2 Mar 2020 15:56:06 +0000 (UTC) From: Nicolas Saenz Julienne To: linux-kernel@vger.kernel.org, Mathias Nyman Cc: linux-usb@vger.kernel.org, linux-rpi-kernel@lists.infradead.org, linux-arm-kernel@lists.infradead.org, bcm-kernel-feedback-list@broadcom.com, f.fainelli@gmail.com, gregkh@linuxfoundation.org, tim.gover@raspberrypi.org, linux-pci@vger.kernel.org, wahrenst@gmx.net, Nicolas Saenz Julienne Subject: [PATCH v3 4/4] USB: pci-quirks: Add Raspberry Pi 4 quirk Date: Mon, 2 Mar 2020 16:55:28 +0100 Message-Id: <20200302155528.19505-5-nsaenzjulienne@suse.de> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200302155528.19505-1-nsaenzjulienne@suse.de> References: <20200302155528.19505-1-nsaenzjulienne@suse.de> MIME-Version: 1.0 Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org On the Raspberry Pi 4, after a PCI reset, VL805's firmware may either be loaded directly from an EEPROM or, if not present, by the SoC's VideCore. Inform VideCore that VL805 was just reset. Also, as this creates a dependency between XHCI_PCI and VideoCore's, reflect that on the firmware interface Kconfg. Signed-off-by: Nicolas Saenz Julienne --- Changes since v1: - Make RASPBERRYPI_FIRMWARE dependent on this quirk to make sure it gets compiled when needed. drivers/firmware/Kconfig | 1 + drivers/usb/host/pci-quirks.c | 18 ++++++++++++++++++ 2 files changed, 19 insertions(+) diff --git a/drivers/firmware/Kconfig b/drivers/firmware/Kconfig index ea869addc89b..40a468d712a5 100644 --- a/drivers/firmware/Kconfig +++ b/drivers/firmware/Kconfig @@ -180,6 +180,7 @@ config ISCSI_IBFT config RASPBERRYPI_FIRMWARE tristate "Raspberry Pi Firmware Driver" depends on BCM2835_MBOX + default XHCI_PCI help This option enables support for communicating with the firmware on the Raspberry Pi. diff --git a/drivers/usb/host/pci-quirks.c b/drivers/usb/host/pci-quirks.c index beb2efa71341..aee2eaa3f0e1 100644 --- a/drivers/usb/host/pci-quirks.c +++ b/drivers/usb/host/pci-quirks.c @@ -16,6 +16,9 @@ #include #include #include + +#include + #include "pci-quirks.h" #include "xhci-ext-caps.h" @@ -1243,11 +1246,26 @@ static void quirk_usb_handoff_xhci(struct pci_dev *pdev) static void quirk_usb_early_handoff(struct pci_dev *pdev) { + int ret; + /* Skip Netlogic mips SoC's internal PCI USB controller. * This device does not need/support EHCI/OHCI handoff */ if (pdev->vendor == 0x184e) /* vendor Netlogic */ return; + + if (pdev->vendor == PCI_VENDOR_ID_VIA && pdev->device == 0x3483) { + ret = rpi_firmware_init_vl805(pdev); + if (ret) + /* + * Firmware might be outdated, or else, something + * failed, keep going and hope for the best. + */ + dev_warn(&pdev->dev, + "Failed to load VL805's firmware: %d\n", + ret); + } + if (pdev->class != PCI_CLASS_SERIAL_USB_UHCI && pdev->class != PCI_CLASS_SERIAL_USB_OHCI && pdev->class != PCI_CLASS_SERIAL_USB_EHCI &&