From patchwork Tue May 5 16:26:06 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: 1283753 X-Patchwork-Delegate: marek.vasut@gmail.com Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=lists.denx.de (client-ip=85.214.62.61; helo=phobos.denx.de; envelope-from=u-boot-bounces@lists.denx.de; receiver=) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=suse.de Received: from phobos.denx.de (phobos.denx.de [85.214.62.61]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 49GlV44bJCz9sT0 for ; Wed, 6 May 2020 02:26:36 +1000 (AEST) Received: from h2850616.stratoserver.net (localhost [IPv6:::1]) by phobos.denx.de (Postfix) with ESMTP id C14658209E; Tue, 5 May 2020 18:26:25 +0200 (CEST) Authentication-Results: phobos.denx.de; dmarc=none (p=none dis=none) header.from=suse.de Authentication-Results: phobos.denx.de; spf=pass smtp.mailfrom=u-boot-bounces@lists.denx.de Received: by phobos.denx.de (Postfix, from userid 109) id 92EA581C4C; Tue, 5 May 2020 18:26:21 +0200 (CEST) X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on phobos.denx.de X-Spam-Level: X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00,RCVD_IN_MSPIKE_H3, RCVD_IN_MSPIKE_WL,SPF_HELO_NONE,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.2 Received: from mx2.suse.de (mx2.suse.de [195.135.220.15]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by phobos.denx.de (Postfix) with ESMTPS id 0042B81A66 for ; Tue, 5 May 2020 18:26:17 +0200 (CEST) Authentication-Results: phobos.denx.de; dmarc=none (p=none dis=none) header.from=suse.de Authentication-Results: phobos.denx.de; spf=pass smtp.mailfrom=nsaenzjulienne@suse.de Received: from relay2.suse.de (unknown [195.135.220.254]) by mx2.suse.de (Postfix) with ESMTP id 01199AED5; Tue, 5 May 2020 16:26:19 +0000 (UTC) From: Nicolas Saenz Julienne To: mbrugger@suse.com, u-boot@lists.denx.de, bmeng.cn@gmail.com, marex@denx.de, linux-kernel@vger.kernel.org Cc: sjg@chromium.org, m.szyprowski@samsung.com, s.nawrocki@samsung.com, mark.kettenis@xs4all.nl, Nicolas Saenz Julienne Subject: [PATCH v3 1/2] arm: rpi: Add function to trigger VL805's firmware load Date: Tue, 5 May 2020 18:26:06 +0200 Message-Id: <20200505162607.334-2-nsaenzjulienne@suse.de> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20200505162607.334-1-nsaenzjulienne@suse.de> References: <20200505162607.334-1-nsaenzjulienne@suse.de> MIME-Version: 1.0 X-BeenThere: u-boot@lists.denx.de X-Mailman-Version: 2.1.30rc1 Precedence: list List-Id: U-Boot discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: u-boot-bounces@lists.denx.de Sender: "U-Boot" X-Virus-Scanned: clamav-milter 0.102.2 at phobos.denx.de X-Virus-Status: Clean On the Raspberry Pi 4, after a PCI reset, VL805's (a xHCI chip) firmware may either be loaded directly from an EEPROM or, if not present, by the SoC's VideCore (the SoC's co-processor). Introduce the function that informs VideCore that VL805 may need its firmware loaded. Signed-off-by: Nicolas Saenz Julienne --- Changes since v2: - Correct wrong function name in comment - Add better comment on rpi_firmware_init_vl805() Changes since v1: - Rename function so it's not mistaken with regular firmware loading arch/arm/mach-bcm283x/include/mach/mbox.h | 13 +++++++ arch/arm/mach-bcm283x/include/mach/msg.h | 7 ++++ arch/arm/mach-bcm283x/msg.c | 45 +++++++++++++++++++++++ 3 files changed, 65 insertions(+) diff --git a/arch/arm/mach-bcm283x/include/mach/mbox.h b/arch/arm/mach-bcm283x/include/mach/mbox.h index 60e226ce1d..2ae2d3d97c 100644 --- a/arch/arm/mach-bcm283x/include/mach/mbox.h +++ b/arch/arm/mach-bcm283x/include/mach/mbox.h @@ -491,6 +491,19 @@ struct bcm2835_mbox_tag_set_palette { } body; }; +#define BCM2835_MBOX_TAG_NOTIFY_XHCI_RESET 0x00030058 + +struct bcm2835_mbox_tag_pci_dev_addr { + struct bcm2835_mbox_tag_hdr tag_hdr; + union { + struct { + u32 dev_addr; + } req; + struct { + } resp; + } body; +}; + /* * Pass a raw u32 message to the VC, and receive a raw u32 back. * diff --git a/arch/arm/mach-bcm283x/include/mach/msg.h b/arch/arm/mach-bcm283x/include/mach/msg.h index 4afb08631b..f5213dd0e0 100644 --- a/arch/arm/mach-bcm283x/include/mach/msg.h +++ b/arch/arm/mach-bcm283x/include/mach/msg.h @@ -48,4 +48,11 @@ int bcm2835_set_video_params(int *widthp, int *heightp, int depth_bpp, int pixel_order, int alpha_mode, ulong *fb_basep, ulong *fb_sizep, int *pitchp); +/** + * bcm2711_notify_vl805_reset() - get vl805's firmware loaded + * + * @return 0 if OK, -EIO on error + */ +int bcm2711_notify_vl805_reset(void); + #endif diff --git a/arch/arm/mach-bcm283x/msg.c b/arch/arm/mach-bcm283x/msg.c index 94b75283f8..f8ef531652 100644 --- a/arch/arm/mach-bcm283x/msg.c +++ b/arch/arm/mach-bcm283x/msg.c @@ -40,6 +40,12 @@ struct msg_setup { u32 end_tag; }; +struct msg_notify_vl805_reset { + struct bcm2835_mbox_hdr hdr; + struct bcm2835_mbox_tag_pci_dev_addr dev_addr; + u32 end_tag; +}; + int bcm2835_power_on_module(u32 module) { ALLOC_CACHE_ALIGN_BUFFER(struct msg_set_power_state, msg_pwr, 1); @@ -151,3 +157,42 @@ int bcm2835_set_video_params(int *widthp, int *heightp, int depth_bpp, return 0; } + +/* + * The Raspberry Pi 4 gets its USB functionality from VL805, a PCIe chip that + * implements xHCI. After a PCI reset, VL805's firmware may either be loaded + * directly from an EEPROM or, if not present, by the SoC's co-processor, + * VideoCore. RPi4's VideoCore OS contains both the non public firmware load + * logic and the VL805 firmware blob. This function triggers the aforementioned + * process. + */ +int bcm2711_notify_vl805_reset(void) +{ + ALLOC_CACHE_ALIGN_BUFFER(struct msg_notify_vl805_reset, + msg_notify_vl805_reset, 1); + int ret; + + BCM2835_MBOX_INIT_HDR(msg_notify_vl805_reset); + BCM2835_MBOX_INIT_TAG(&msg_notify_vl805_reset->dev_addr, + NOTIFY_XHCI_RESET); + + /* + * The pci device address is expected like this: + * + * PCI_BUS << 20 | PCI_SLOT << 15 | PCI_FUNC << 12 + * + * But since RPi4's PCIe setup is hardwired, we know the address in + * advance. + */ + msg_notify_vl805_reset->dev_addr.body.req.dev_addr = 0x100000; + + ret = bcm2835_mbox_call_prop(BCM2835_MBOX_PROP_CHAN, + &msg_notify_vl805_reset->hdr); + if (ret) { + printf("bcm2711: Faild to load vl805's firmware, %d\n", ret); + return -EIO; + } + + return 0; +} + From patchwork Tue May 5 16:26:07 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: 1283757 X-Patchwork-Delegate: marek.vasut@gmail.com Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=lists.denx.de (client-ip=2a01:238:438b:c500:173d:9f52:ddab:ee01; helo=phobos.denx.de; envelope-from=u-boot-bounces@lists.denx.de; receiver=) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=suse.de Received: from phobos.denx.de (phobos.denx.de [IPv6:2a01:238:438b:c500:173d:9f52:ddab:ee01]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 49GlVQ0MyZz9sT0 for ; Wed, 6 May 2020 02:26:52 +1000 (AEST) Received: from h2850616.stratoserver.net (localhost [IPv6:::1]) by phobos.denx.de (Postfix) with ESMTP id 40A20820AB; Tue, 5 May 2020 18:26:27 +0200 (CEST) Authentication-Results: phobos.denx.de; dmarc=none (p=none dis=none) header.from=suse.de Authentication-Results: phobos.denx.de; spf=pass smtp.mailfrom=u-boot-bounces@lists.denx.de Received: by phobos.denx.de (Postfix, from userid 109) id A816381C4C; Tue, 5 May 2020 18:26:22 +0200 (CEST) X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on phobos.denx.de X-Spam-Level: X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00,RCVD_IN_MSPIKE_H3, RCVD_IN_MSPIKE_WL,SPF_HELO_NONE,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.2 Received: from mx2.suse.de (mx2.suse.de [195.135.220.15]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by phobos.denx.de (Postfix) with ESMTPS id E5F898196A for ; Tue, 5 May 2020 18:26:19 +0200 (CEST) Authentication-Results: phobos.denx.de; dmarc=none (p=none dis=none) header.from=suse.de Authentication-Results: phobos.denx.de; spf=pass smtp.mailfrom=nsaenzjulienne@suse.de Received: from relay2.suse.de (unknown [195.135.220.254]) by mx2.suse.de (Postfix) with ESMTP id EB82AAF5D; Tue, 5 May 2020 16:26:21 +0000 (UTC) From: Nicolas Saenz Julienne To: mbrugger@suse.com, u-boot@lists.denx.de, bmeng.cn@gmail.com, marex@denx.de, linux-kernel@vger.kernel.org Cc: sjg@chromium.org, m.szyprowski@samsung.com, s.nawrocki@samsung.com, mark.kettenis@xs4all.nl, Nicolas Saenz Julienne Subject: [PATCH v3 2/2] usb: xhci: Load Raspberry Pi 4 VL805's firmware Date: Tue, 5 May 2020 18:26:07 +0200 Message-Id: <20200505162607.334-3-nsaenzjulienne@suse.de> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20200505162607.334-1-nsaenzjulienne@suse.de> References: <20200505162607.334-1-nsaenzjulienne@suse.de> MIME-Version: 1.0 X-BeenThere: u-boot@lists.denx.de X-Mailman-Version: 2.1.30rc1 Precedence: list List-Id: U-Boot discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: u-boot-bounces@lists.denx.de Sender: "U-Boot" X-Virus-Scanned: clamav-milter 0.102.2 at phobos.denx.de X-Virus-Status: Clean When needed, RPi4's co-processor (called VideoCore) has to be instructed to load VL805's firmware (the chip providing xHCI support). VideCore's firmware expects the board's PCIe bus to be already configured in order for it to load the xHCI chip firmware. So we have to make sure this happens in between the PCIe configuration and xHCI startup. Introduce a callback in xhci_pci_probe() to run this platform specific routine. Signed-off-by: Nicolas Saenz Julienne --- Changes since v2: - Get rid of #ifdef CONFIG_BCM2711 - Get rid of redundant error message Changes since v1: - Create callback board/raspberrypi/rpi/rpi.c | 6 ++++++ drivers/usb/host/xhci-pci.c | 6 ++++++ include/usb/xhci.h | 3 +++ 3 files changed, 15 insertions(+) diff --git a/board/raspberrypi/rpi/rpi.c b/board/raspberrypi/rpi/rpi.c index e367ba3092..dcaf45fbf2 100644 --- a/board/raspberrypi/rpi/rpi.c +++ b/board/raspberrypi/rpi/rpi.c @@ -14,6 +14,7 @@ #include #include #include +#include #include #include #include @@ -494,3 +495,8 @@ int ft_board_setup(void *blob, bd_t *bd) return 0; } + +void xhci_pci_fixup(struct udevice *dev) +{ + bcm2711_notify_vl805_reset(); +} diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c index c1f60da541..1285dde1ef 100644 --- a/drivers/usb/host/xhci-pci.c +++ b/drivers/usb/host/xhci-pci.c @@ -11,6 +11,10 @@ #include #include +__weak void xhci_pci_fixup(struct udevice *dev) +{ +} + static void xhci_pci_init(struct udevice *dev, struct xhci_hccr **ret_hccr, struct xhci_hcor **ret_hcor) { @@ -40,6 +44,8 @@ static int xhci_pci_probe(struct udevice *dev) struct xhci_hccr *hccr; struct xhci_hcor *hcor; + xhci_pci_fixup(dev); + xhci_pci_init(dev, &hccr, &hcor); return xhci_register(dev, hccr, hcor); diff --git a/include/usb/xhci.h b/include/usb/xhci.h index c16106a2fc..57feed7603 100644 --- a/include/usb/xhci.h +++ b/include/usb/xhci.h @@ -16,6 +16,7 @@ #ifndef HOST_XHCI_H_ #define HOST_XHCI_H_ +#include #include #include #include @@ -1281,4 +1282,6 @@ extern struct dm_usb_ops xhci_usb_ops; struct xhci_ctrl *xhci_get_ctrl(struct usb_device *udev); +extern void xhci_pci_fixup(struct udevice *dev); + #endif /* HOST_XHCI_H_ */