From patchwork Tue Mar 26 02:45:35 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yoshihiro Shimoda X-Patchwork-Id: 13603300 X-Patchwork-Delegate: kw@linux.com Received: from relmlie5.idc.renesas.com (relmlor1.renesas.com [210.160.252.171]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 50D5E5A7B4; Tue, 26 Mar 2024 02:51:06 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=210.160.252.171 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1711421469; cv=none; b=B8+tnzdafSTMXisKDxMerG3c5Mh5nzKm4NA2CQ6tFkO2H8jI5ArpVTqVSD8iH3uWWL+HLo2InAydIc2tFBJLmcQZ3loktQHyo2vkQhok7vlLGlBlBrZ/qQM35pOOvzumqtDjXgIVdC9GSVo7dsfJCCgH+t9OkqeiyqAGz7p0oYk= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1711421469; c=relaxed/simple; bh=QHWTwOOMMPET8PzAlJc3PFCQ9tLxuzBQFNBgnWpopiA=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=ZD8//HejHVtxziQPhFeJJDfABtQWD94wdfqMOszu4A4AMOay/iSdZsPRGDKjgF/gllrpJMeXtaIBUHi2aWcP3hDaVAr+IWLbQv7WtQHu75yYJuOjeilb177RC2F16qfbkV531HyX2ESE1VySzK/biOke1Dmo6v/aSUYxd0AfCtw= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=renesas.com; spf=pass smtp.mailfrom=renesas.com; arc=none smtp.client-ip=210.160.252.171 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=renesas.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=renesas.com X-IronPort-AV: E=Sophos;i="6.07,154,1708354800"; d="scan'208";a="199248028" Received: from unknown (HELO relmlir6.idc.renesas.com) ([10.200.68.152]) by relmlie5.idc.renesas.com with ESMTP; 26 Mar 2024 11:45:57 +0900 Received: from localhost.localdomain (unknown [10.166.13.99]) by relmlir6.idc.renesas.com (Postfix) with ESMTP id 957AC415E8CA; Tue, 26 Mar 2024 11:45:57 +0900 (JST) From: Yoshihiro Shimoda To: lpieralisi@kernel.org, kw@linux.com, robh@kernel.org, bhelgaas@google.com, krzysztof.kozlowski+dt@linaro.org, conor+dt@kernel.org, jingoohan1@gmail.com, gustavo.pimentel@synopsys.com, mani@kernel.org Cc: marek.vasut+renesas@gmail.com, linux-pci@vger.kernel.org, devicetree@vger.kernel.org, linux-renesas-soc@vger.kernel.org, Yoshihiro Shimoda , Conor Dooley , Geert Uytterhoeven Subject: [PATCH v2 1/6] dt-bindings: PCI: rcar-gen4-pci-host: Add R-Car V4H compatible Date: Tue, 26 Mar 2024 11:45:35 +0900 Message-Id: <20240326024540.2336155-2-yoshihiro.shimoda.uh@renesas.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20240326024540.2336155-1-yoshihiro.shimoda.uh@renesas.com> References: <20240326024540.2336155-1-yoshihiro.shimoda.uh@renesas.com> Precedence: bulk X-Mailing-List: linux-pci@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Document bindings for R-Car V4H (R8A779G0) PCIe host module. Signed-off-by: Yoshihiro Shimoda Acked-by: Conor Dooley Reviewed-by: Geert Uytterhoeven --- Documentation/devicetree/bindings/pci/rcar-gen4-pci-host.yaml | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/Documentation/devicetree/bindings/pci/rcar-gen4-pci-host.yaml b/Documentation/devicetree/bindings/pci/rcar-gen4-pci-host.yaml index ffb34339b637..955c664f1fbb 100644 --- a/Documentation/devicetree/bindings/pci/rcar-gen4-pci-host.yaml +++ b/Documentation/devicetree/bindings/pci/rcar-gen4-pci-host.yaml @@ -16,7 +16,9 @@ allOf: properties: compatible: items: - - const: renesas,r8a779f0-pcie # R-Car S4-8 + - enum: + - renesas,r8a779f0-pcie # R-Car S4-8 + - renesas,r8a779g0-pcie # R-Car V4H - const: renesas,rcar-gen4-pcie # R-Car Gen4 reg: From patchwork Tue Mar 26 02:45:36 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yoshihiro Shimoda X-Patchwork-Id: 13603301 X-Patchwork-Delegate: kw@linux.com Received: from relmlie6.idc.renesas.com (relmlor2.renesas.com [210.160.252.172]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 5B8ED128398; Tue, 26 Mar 2024 02:51:09 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=210.160.252.172 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1711421471; cv=none; b=OQqx+mX/E4M51QEDRTLp4gjVR9NPBTeNi+oTdbaX1tpFxnGmjaMmXxpflOz2F5h/oyZQ2xpWpW4TvO6woLJeblfOyUMbtvyVgW3xCT3ipSb9hlCyvRFLrdaYle3XoHab+pBxwv+RWDxVzmtTyQcDBosM5y7ZorLKRVLQf37uT3c= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1711421471; c=relaxed/simple; bh=dGonVUKvl7liV10e3coRejTBfxj+bpKkbHKvOrjwuug=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=nqk8Wt0RAagBeAytwcdbRUpoOjNvebvhS9zXQtjw8/nXvJw08qZUYERHz8Lo+Ea4yMK7z5EfDCfD0mJY/iJI2YUAXKj4Kd/Xb0kqtP7k5NYrbbCaXjjLxHlLGsDqbkkJmO16Vg9PGnme9Tq78oEmrqMfrtgdzkYqp8PzDoogz2k= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=renesas.com; spf=pass smtp.mailfrom=renesas.com; arc=none smtp.client-ip=210.160.252.172 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=renesas.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=renesas.com X-IronPort-AV: E=Sophos;i="6.07,154,1708354800"; d="scan'208";a="203200843" Received: from unknown (HELO relmlir6.idc.renesas.com) ([10.200.68.152]) by relmlie6.idc.renesas.com with ESMTP; 26 Mar 2024 11:45:57 +0900 Received: from localhost.localdomain (unknown [10.166.13.99]) by relmlir6.idc.renesas.com (Postfix) with ESMTP id BFBFE415E8CA; Tue, 26 Mar 2024 11:45:57 +0900 (JST) From: Yoshihiro Shimoda To: lpieralisi@kernel.org, kw@linux.com, robh@kernel.org, bhelgaas@google.com, krzysztof.kozlowski+dt@linaro.org, conor+dt@kernel.org, jingoohan1@gmail.com, gustavo.pimentel@synopsys.com, mani@kernel.org Cc: marek.vasut+renesas@gmail.com, linux-pci@vger.kernel.org, devicetree@vger.kernel.org, linux-renesas-soc@vger.kernel.org, Yoshihiro Shimoda , Conor Dooley , Geert Uytterhoeven Subject: [PATCH v2 2/6] dt-bindings: PCI: rcar-gen4-pci-ep: Add R-Car V4H compatible Date: Tue, 26 Mar 2024 11:45:36 +0900 Message-Id: <20240326024540.2336155-3-yoshihiro.shimoda.uh@renesas.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20240326024540.2336155-1-yoshihiro.shimoda.uh@renesas.com> References: <20240326024540.2336155-1-yoshihiro.shimoda.uh@renesas.com> Precedence: bulk X-Mailing-List: linux-pci@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Document bindings for R-Car V4H (R8A779G0) PCIe endpoint module. Signed-off-by: Yoshihiro Shimoda Acked-by: Conor Dooley Reviewed-by: Geert Uytterhoeven --- Documentation/devicetree/bindings/pci/rcar-gen4-pci-ep.yaml | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/Documentation/devicetree/bindings/pci/rcar-gen4-pci-ep.yaml b/Documentation/devicetree/bindings/pci/rcar-gen4-pci-ep.yaml index fe38f62da066..91b81ac75592 100644 --- a/Documentation/devicetree/bindings/pci/rcar-gen4-pci-ep.yaml +++ b/Documentation/devicetree/bindings/pci/rcar-gen4-pci-ep.yaml @@ -16,7 +16,9 @@ allOf: properties: compatible: items: - - const: renesas,r8a779f0-pcie-ep # R-Car S4-8 + - enum: + - renesas,r8a779f0-pcie-ep # R-Car S4-8 + - renesas,r8a779g0-pcie-ep # R-Car V4H - const: renesas,rcar-gen4-pcie-ep # R-Car Gen4 reg: From patchwork Tue Mar 26 02:45:37 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yoshihiro Shimoda X-Patchwork-Id: 13603303 X-Patchwork-Delegate: kw@linux.com Received: from relmlie5.idc.renesas.com (relmlor1.renesas.com [210.160.252.171]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 6043F128811; Tue, 26 Mar 2024 02:51:08 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=210.160.252.171 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1711421472; cv=none; b=fGdjwDyEM1qAShmxeGQqVrGitjjYWBjvAPNty8Wg/uruPIuHDF3DNozdrMEFSkwbdUFlqUqrdcFI/HjdPFcigbcWXBoRWEPOZIrmKkkGtVbx5QMs8oL/80kUbNJwCrOb8kouGWmoZWT5JZJ9XJjHO9cXcQet5mjJ5eU2GOef5Ao= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1711421472; c=relaxed/simple; bh=he+6NGrhJHI5YonJXCPkU2iB/F89fg/iVTKIZyLwyDs=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=AEfB/i1clOpZxOrPk21vhyIggvwTh8iZ4XLFJ1swm61QF/o1vdUo6fr6u8GgtSwv2OB6W7g/wv9/8euYy2Y1Zq2ID8UaSmJhZbdgaVdxCh3Ss37pyX9RIKYEcKZmqiZMwsf+jeF61D/RHjxYwJY+Re5xqOyXrII0C0H6avuw4Ss= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=renesas.com; spf=pass smtp.mailfrom=renesas.com; arc=none smtp.client-ip=210.160.252.171 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=renesas.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=renesas.com X-IronPort-AV: E=Sophos;i="6.07,154,1708354800"; d="scan'208";a="199248031" Received: from unknown (HELO relmlir6.idc.renesas.com) ([10.200.68.152]) by relmlie5.idc.renesas.com with ESMTP; 26 Mar 2024 11:45:58 +0900 Received: from localhost.localdomain (unknown [10.166.13.99]) by relmlir6.idc.renesas.com (Postfix) with ESMTP id E9E12415DFB8; Tue, 26 Mar 2024 11:45:57 +0900 (JST) From: Yoshihiro Shimoda To: lpieralisi@kernel.org, kw@linux.com, robh@kernel.org, bhelgaas@google.com, krzysztof.kozlowski+dt@linaro.org, conor+dt@kernel.org, jingoohan1@gmail.com, gustavo.pimentel@synopsys.com, mani@kernel.org Cc: marek.vasut+renesas@gmail.com, linux-pci@vger.kernel.org, devicetree@vger.kernel.org, linux-renesas-soc@vger.kernel.org, Yoshihiro Shimoda Subject: [PATCH v2 3/6] PCI: dwc: Add PCIE_PORT_{FORCE,LANE_SKEW} macros Date: Tue, 26 Mar 2024 11:45:37 +0900 Message-Id: <20240326024540.2336155-4-yoshihiro.shimoda.uh@renesas.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20240326024540.2336155-1-yoshihiro.shimoda.uh@renesas.com> References: <20240326024540.2336155-1-yoshihiro.shimoda.uh@renesas.com> Precedence: bulk X-Mailing-List: linux-pci@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 R-Car Gen4 PCIe controller needs to use the Synopsys-specific PCIe configuration registers. So, add the macros. Signed-off-by: Yoshihiro Shimoda --- drivers/pci/controller/dwc/pcie-designware.h | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/pci/controller/dwc/pcie-designware.h b/drivers/pci/controller/dwc/pcie-designware.h index 26dae4837462..aa4db6eaf02a 100644 --- a/drivers/pci/controller/dwc/pcie-designware.h +++ b/drivers/pci/controller/dwc/pcie-designware.h @@ -71,6 +71,9 @@ #define LINK_WAIT_IATU 9 /* Synopsys-specific PCIe configuration registers */ +#define PCIE_PORT_FORCE 0x708 +#define PORT_FORCE_DO_DESKEW_FOR_SRIS BIT(23) + #define PCIE_PORT_AFR 0x70C #define PORT_AFR_N_FTS_MASK GENMASK(15, 8) #define PORT_AFR_N_FTS(n) FIELD_PREP(PORT_AFR_N_FTS_MASK, n) @@ -92,6 +95,9 @@ #define PORT_LINK_MODE_4_LANES PORT_LINK_MODE(0x7) #define PORT_LINK_MODE_8_LANES PORT_LINK_MODE(0xf) +#define PCIE_PORT_LANE_SKEW 0x714 +#define PORT_LANE_SKEW_INSERT_MASK GENMASK(23, 0) + #define PCIE_PORT_DEBUG0 0x728 #define PORT_LOGIC_LTSSM_STATE_MASK 0x1f #define PORT_LOGIC_LTSSM_STATE_L0 0x11 From patchwork Tue Mar 26 02:45:38 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yoshihiro Shimoda X-Patchwork-Id: 13603302 X-Patchwork-Delegate: kw@linux.com Received: from relmlie5.idc.renesas.com (relmlor1.renesas.com [210.160.252.171]) by smtp.subspace.kernel.org (Postfix) with ESMTP id D62055A7B4; Tue, 26 Mar 2024 02:51:09 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=210.160.252.171 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1711421472; cv=none; b=Rj6dWvdFII20e7wbTHG3JQeuwGCMIoF9UN+Mz0JyOYCbwSYgRF2TGy9uQzBnBVIuopD06uaxL0JJvpThQUXvvx1puCTnYQPwF6fjck59/s+PnXnCZGPZ7H1a/nFQA60WpDGGoNCDM7s7An+N8KafJzojAs7PTCh/EMp4j/xHXKs= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1711421472; c=relaxed/simple; bh=MpqMQ/t/Tm6LdEI6CueBw7TL54njv18tTW+sqHAgPUc=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=Sn5qR/QZIjGVbD9RKWbf+7RWrcOEVcBud/KeGEFgifDm57AIULeRRSt1WvuSBHHgnsR5CLYTXFk2QjuzGVTLwa/4vrbBGBn6Pp2oPUosQp765h2mqFJlsQZkUi3xS6gwCy+ihmSTRhBkARu+GvqyN5nLziImIG95j1v/UnDHUcM= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=renesas.com; spf=pass smtp.mailfrom=renesas.com; arc=none smtp.client-ip=210.160.252.171 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=renesas.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=renesas.com X-IronPort-AV: E=Sophos;i="6.07,154,1708354800"; d="scan'208";a="199248035" Received: from unknown (HELO relmlir6.idc.renesas.com) ([10.200.68.152]) by relmlie5.idc.renesas.com with ESMTP; 26 Mar 2024 11:45:58 +0900 Received: from localhost.localdomain (unknown [10.166.13.99]) by relmlir6.idc.renesas.com (Postfix) with ESMTP id 1CF43415DFB8; Tue, 26 Mar 2024 11:45:58 +0900 (JST) From: Yoshihiro Shimoda To: lpieralisi@kernel.org, kw@linux.com, robh@kernel.org, bhelgaas@google.com, krzysztof.kozlowski+dt@linaro.org, conor+dt@kernel.org, jingoohan1@gmail.com, gustavo.pimentel@synopsys.com, mani@kernel.org Cc: marek.vasut+renesas@gmail.com, linux-pci@vger.kernel.org, devicetree@vger.kernel.org, linux-renesas-soc@vger.kernel.org, Yoshihiro Shimoda Subject: [PATCH v2 4/6] PCI: dwc: rcar-gen4: Add a new function pointer for other SoC support Date: Tue, 26 Mar 2024 11:45:38 +0900 Message-Id: <20240326024540.2336155-5-yoshihiro.shimoda.uh@renesas.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20240326024540.2336155-1-yoshihiro.shimoda.uh@renesas.com> References: <20240326024540.2336155-1-yoshihiro.shimoda.uh@renesas.com> Precedence: bulk X-Mailing-List: linux-pci@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 This driver can reuse other R-Car Gen4 SoC support. However, some initializing settings differs between r8a779f0 and others. So, add a new function pointer start_link_enable() to support other R-Car Gen4 SoC in the future. No behavior changes. Signed-off-by: Yoshihiro Shimoda --- drivers/pci/controller/dwc/pcie-rcar-gen4.c | 57 +++++++++++++++++++-- 1 file changed, 52 insertions(+), 5 deletions(-) diff --git a/drivers/pci/controller/dwc/pcie-rcar-gen4.c b/drivers/pci/controller/dwc/pcie-rcar-gen4.c index 0be760ed420b..a37613dd9ff4 100644 --- a/drivers/pci/controller/dwc/pcie-rcar-gen4.c +++ b/drivers/pci/controller/dwc/pcie-rcar-gen4.c @@ -53,9 +53,16 @@ struct rcar_gen4_pcie { void __iomem *base; struct platform_device *pdev; enum dw_pcie_device_mode mode; + + int (*start_link_enable)(struct rcar_gen4_pcie *rcar); }; #define to_rcar_gen4_pcie(_dw) container_of(_dw, struct rcar_gen4_pcie, dw) +struct rcar_gen4_pcie_platdata { + enum dw_pcie_device_mode mode; + int (*start_link_enable)(struct rcar_gen4_pcie *rcar); +}; + /* Common */ static void rcar_gen4_pcie_ltssm_enable(struct rcar_gen4_pcie *rcar, bool enable) @@ -123,9 +130,13 @@ static int rcar_gen4_pcie_speed_change(struct dw_pcie *dw) static int rcar_gen4_pcie_start_link(struct dw_pcie *dw) { struct rcar_gen4_pcie *rcar = to_rcar_gen4_pcie(dw); - int i, changes; + int i, changes, ret; - rcar_gen4_pcie_ltssm_enable(rcar, true); + if (rcar->start_link_enable) { + ret = rcar->start_link_enable(rcar); + if (ret) + return ret; + } /* * Require direct speed change with retrying here if the link_gen is @@ -437,7 +448,10 @@ static void rcar_gen4_remove_dw_pcie_ep(struct rcar_gen4_pcie *rcar) /* Common */ static int rcar_gen4_add_dw_pcie(struct rcar_gen4_pcie *rcar) { - rcar->mode = (uintptr_t)of_device_get_match_data(&rcar->pdev->dev); + const struct rcar_gen4_pcie_platdata *pd = of_device_get_match_data(&rcar->pdev->dev); + + rcar->mode = pd->mode; + rcar->start_link_enable = pd->start_link_enable; switch (rcar->mode) { case DW_PCIE_RC_TYPE: @@ -500,14 +514,47 @@ static void rcar_gen4_pcie_remove(struct platform_device *pdev) rcar_gen4_pcie_unprepare(rcar); } +static int r8a779f0_pcie_start_link_enable(struct rcar_gen4_pcie *rcar) +{ + rcar_gen4_pcie_ltssm_enable(rcar, true); + + return 0; +} + +static struct rcar_gen4_pcie_platdata platdata_r8a779f0_pcie = { + .mode = DW_PCIE_RC_TYPE, + .start_link_enable = r8a779f0_pcie_start_link_enable, +}; + +static struct rcar_gen4_pcie_platdata platdata_r8a779f0_pcie_ep = { + .mode = DW_PCIE_EP_TYPE, + .start_link_enable = r8a779f0_pcie_start_link_enable, +}; + +static struct rcar_gen4_pcie_platdata platdata_rcar_gen4_pcie = { + .mode = DW_PCIE_RC_TYPE, +}; + +static struct rcar_gen4_pcie_platdata platdata_rcar_gen4_pcie_ep = { + .mode = DW_PCIE_EP_TYPE, +}; + static const struct of_device_id rcar_gen4_pcie_of_match[] = { + { + .compatible = "renesas,r8a779f0-pcie", + .data = &platdata_r8a779f0_pcie, + }, + { + .compatible = "renesas,r8a779f0-pcie-ep", + .data = &platdata_r8a779f0_pcie_ep, + }, { .compatible = "renesas,rcar-gen4-pcie", - .data = (void *)DW_PCIE_RC_TYPE, + .data = &platdata_rcar_gen4_pcie, }, { .compatible = "renesas,rcar-gen4-pcie-ep", - .data = (void *)DW_PCIE_EP_TYPE, + .data = &platdata_rcar_gen4_pcie_ep, }, {}, }; From patchwork Tue Mar 26 02:45:39 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yoshihiro Shimoda X-Patchwork-Id: 13603305 X-Patchwork-Delegate: kw@linux.com Received: from relmlie5.idc.renesas.com (relmlor1.renesas.com [210.160.252.171]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 1A276128814; 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dmarc=pass (p=none dis=none) header.from=renesas.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=renesas.com X-IronPort-AV: E=Sophos;i="6.07,154,1708354800"; d="scan'208";a="199248038" Received: from unknown (HELO relmlir6.idc.renesas.com) ([10.200.68.152]) by relmlie5.idc.renesas.com with ESMTP; 26 Mar 2024 11:45:58 +0900 Received: from localhost.localdomain (unknown [10.166.13.99]) by relmlir6.idc.renesas.com (Postfix) with ESMTP id 3ACF3415DFB8; Tue, 26 Mar 2024 11:45:58 +0900 (JST) From: Yoshihiro Shimoda To: lpieralisi@kernel.org, kw@linux.com, robh@kernel.org, bhelgaas@google.com, krzysztof.kozlowski+dt@linaro.org, conor+dt@kernel.org, jingoohan1@gmail.com, gustavo.pimentel@synopsys.com, mani@kernel.org Cc: marek.vasut+renesas@gmail.com, linux-pci@vger.kernel.org, devicetree@vger.kernel.org, linux-renesas-soc@vger.kernel.org, Yoshihiro Shimoda Subject: [PATCH v2 5/6] PCI: dwc: rcar-gen4: Add support for other R-Car Gen4 PCIe controller Date: Tue, 26 Mar 2024 11:45:39 +0900 Message-Id: <20240326024540.2336155-6-yoshihiro.shimoda.uh@renesas.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20240326024540.2336155-1-yoshihiro.shimoda.uh@renesas.com> References: <20240326024540.2336155-1-yoshihiro.shimoda.uh@renesas.com> Precedence: bulk X-Mailing-List: linux-pci@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 The PCIe controllers of R-Car V4H (r8a779g0) and one more SoC require different initializing settings than R-Car S4-8 (r8a779f0). So, add specific functions for them as "renesas,rcar-gen4-pcie{-ep}" compatible. Signed-off-by: Yoshihiro Shimoda --- drivers/pci/controller/dwc/pcie-rcar-gen4.c | 188 +++++++++++++++++++- 1 file changed, 187 insertions(+), 1 deletion(-) diff --git a/drivers/pci/controller/dwc/pcie-rcar-gen4.c b/drivers/pci/controller/dwc/pcie-rcar-gen4.c index a37613dd9ff4..7f3b5e9ca405 100644 --- a/drivers/pci/controller/dwc/pcie-rcar-gen4.c +++ b/drivers/pci/controller/dwc/pcie-rcar-gen4.c @@ -5,8 +5,10 @@ */ #include +#include #include #include +#include #include #include #include @@ -20,9 +22,10 @@ /* Renesas-specific */ /* PCIe Mode Setting Register 0 */ #define PCIEMSR0 0x0000 -#define BIFUR_MOD_SET_ON BIT(0) +#define APP_SRIS_MODE BIT(6) #define DEVICE_TYPE_EP 0 #define DEVICE_TYPE_RC BIT(4) +#define BIFUR_MOD_SET_ON BIT(0) /* PCIe Interrupt Status 0 */ #define PCIEINTSTS0 0x0084 @@ -37,33 +40,179 @@ #define PCIEDMAINTSTSEN 0x0314 #define PCIEDMAINTSTSEN_INIT GENMASK(15, 0) +/* Port Logic Registers 89 */ +#define PRTLGC89 0x0b70 + +/* Port Logic Registers 90 */ +#define PRTLGC90 0x0b74 + /* PCIe Reset Control Register 1 */ #define PCIERSTCTRL1 0x0014 #define APP_HOLD_PHY_RST BIT(16) #define APP_LTSSM_ENABLE BIT(0) +/* PCIe Power Management Control */ +#define PCIEPWRMNGCTRL 0x0070 +#define APP_CLK_REQ_N BIT(11) +#define APP_CLK_PM_EN BIT(10) + #define RCAR_NUM_SPEED_CHANGE_RETRIES 10 #define RCAR_MAX_LINK_SPEED 4 #define RCAR_GEN4_PCIE_EP_FUNC_DBI_OFFSET 0x1000 #define RCAR_GEN4_PCIE_EP_FUNC_DBI2_OFFSET 0x800 +#define RCAR_GEN4_PCIE_FIRMEARE_NAME "rcar_gen4_pcie.bin" +#define RCAR_GEN4_PCIE_FIRMEARE_BASE_ADDR 0xc000 + struct rcar_gen4_pcie { struct dw_pcie dw; void __iomem *base; + /* + * The R-Car Gen4 documents don't describe the PHY registers' name. + * But, the initialization procedure describes these offsets. So, + * this driver has "phy_base + magical offset number" for it. + */ + void __iomem *phy_base; struct platform_device *pdev; enum dw_pcie_device_mode mode; int (*start_link_enable)(struct rcar_gen4_pcie *rcar); + void (*additional_common_init)(struct rcar_gen4_pcie *rcar); }; #define to_rcar_gen4_pcie(_dw) container_of(_dw, struct rcar_gen4_pcie, dw) struct rcar_gen4_pcie_platdata { enum dw_pcie_device_mode mode; int (*start_link_enable)(struct rcar_gen4_pcie *rcar); + void (*additional_common_init)(struct rcar_gen4_pcie *rcar); }; /* Common */ +static void rcar_gen4_pcie_phy_reg_update_bits(struct rcar_gen4_pcie *rcar, + u32 offset, u32 mask, u32 val) +{ + u32 tmp; + + tmp = readl(rcar->phy_base + offset); + tmp &= ~mask; + tmp |= val; + writel(tmp, rcar->phy_base + offset); +} + +static int rcar_gen4_pcie_reg_check_bit(struct rcar_gen4_pcie *rcar, + u32 offset, u32 mask) +{ + struct dw_pcie *dw = &rcar->dw; + + if (dw_pcie_readl_dbi(dw, offset) & mask) + return -EAGAIN; + + return 0; +} + +static int rcar_gen4_pcie_update_phy_firmware(struct rcar_gen4_pcie *rcar) +{ + const u32 check_addr[] = { 0x00101018, 0x00101118, 0x00101021, 0x00101121}; + struct dw_pcie *dw = &rcar->dw; + const struct firmware *fw; + unsigned int i, timeout; + u32 data; + int ret; + + ret = request_firmware(&fw, RCAR_GEN4_PCIE_FIRMEARE_NAME, dw->dev); + if (ret) + return ret; + + for (i = 0; i < (fw->size / 2); i++) { + data = fw->data[i * 2] | fw->data[(i * 2) + 1] << 8; + timeout = 100; +retry_data: + dw_pcie_writel_dbi(dw, PRTLGC89, RCAR_GEN4_PCIE_FIRMEARE_BASE_ADDR + i); + dw_pcie_writel_dbi(dw, PRTLGC90, data); + if (rcar_gen4_pcie_reg_check_bit(rcar, PRTLGC89, BIT(30)) < 0) { + if (!(--timeout)) { + ret = -ETIMEDOUT; + goto exit; + } + usleep_range(100, 200); + goto retry_data; + } + } + + rcar_gen4_pcie_phy_reg_update_bits(rcar, 0x0f8, BIT(17), BIT(17)); + + for (i = 0; i < ARRAY_SIZE(check_addr); i++) { + timeout = 100; +retry_check: + dw_pcie_writel_dbi(dw, PRTLGC89, check_addr[i]); + ret = rcar_gen4_pcie_reg_check_bit(rcar, PRTLGC89, BIT(30)); + ret |= rcar_gen4_pcie_reg_check_bit(rcar, PRTLGC90, BIT(0)); + if (ret < 0) { + if (!(--timeout)) { + ret = -ETIMEDOUT; + goto exit; + } + usleep_range(100, 200); + goto retry_check; + } + } + + ret = 0; +exit: + release_firmware(fw); + + return ret; +} + +static int rcar_gen4_pcie_enable_phy(struct rcar_gen4_pcie *rcar) +{ + struct dw_pcie *dw = &rcar->dw; + u32 val; + int ret; + + val = dw_pcie_readl_dbi(dw, PCIE_PORT_FORCE); + val |= PORT_FORCE_DO_DESKEW_FOR_SRIS; + dw_pcie_writel_dbi(dw, PCIE_PORT_FORCE, val); + + val = readl(rcar->base + PCIEMSR0); + val |= APP_SRIS_MODE; + writel(val, rcar->base + PCIEMSR0); + + rcar_gen4_pcie_phy_reg_update_bits(rcar, 0x700, BIT(28), 0); + rcar_gen4_pcie_phy_reg_update_bits(rcar, 0x700, BIT(20), 0); + rcar_gen4_pcie_phy_reg_update_bits(rcar, 0x700, BIT(12), 0); + rcar_gen4_pcie_phy_reg_update_bits(rcar, 0x700, BIT(4), 0); + + rcar_gen4_pcie_phy_reg_update_bits(rcar, 0x148, GENMASK(23, 22), BIT(22)); + rcar_gen4_pcie_phy_reg_update_bits(rcar, 0x148, GENMASK(18, 16), GENMASK(17, 16)); + rcar_gen4_pcie_phy_reg_update_bits(rcar, 0x148, GENMASK(7, 6), BIT(6)); + rcar_gen4_pcie_phy_reg_update_bits(rcar, 0x148, GENMASK(2, 0), GENMASK(11, 0)); + rcar_gen4_pcie_phy_reg_update_bits(rcar, 0x1d4, GENMASK(16, 15), GENMASK(16, 15)); + rcar_gen4_pcie_phy_reg_update_bits(rcar, 0x514, BIT(26), BIT(26)); + rcar_gen4_pcie_phy_reg_update_bits(rcar, 0x0f8, BIT(16), 0); + rcar_gen4_pcie_phy_reg_update_bits(rcar, 0x0f8, BIT(19), BIT(19)); + + val = readl(rcar->base + PCIERSTCTRL1); + val &= ~APP_HOLD_PHY_RST; + writel(val, rcar->base + PCIERSTCTRL1); + + ret = readl_poll_timeout(rcar->phy_base + 0x0f8, val, !(val & BIT(18)), + 100, 10000); + if (ret < 0) + return ret; + + ret = rcar_gen4_pcie_update_phy_firmware(rcar); + if (ret) + return ret; + + val = readl(rcar->base + PCIERSTCTRL1); + val |= APP_LTSSM_ENABLE; + writel(val, rcar->base + PCIERSTCTRL1); + + return 0; +} + static void rcar_gen4_pcie_ltssm_enable(struct rcar_gen4_pcie *rcar, bool enable) { @@ -201,6 +350,9 @@ static int rcar_gen4_pcie_common_init(struct rcar_gen4_pcie *rcar) if (ret) goto err_unprepare; + if (rcar->additional_common_init) + rcar->additional_common_init(rcar); + return 0; err_unprepare: @@ -242,6 +394,10 @@ static void rcar_gen4_pcie_unprepare(struct rcar_gen4_pcie *rcar) static int rcar_gen4_pcie_get_resources(struct rcar_gen4_pcie *rcar) { + rcar->phy_base = devm_platform_ioremap_resource_byname(rcar->pdev, "phy"); + if (IS_ERR(rcar->phy_base)) + return PTR_ERR(rcar->base); + /* Renesas-specific registers */ rcar->base = devm_platform_ioremap_resource_byname(rcar->pdev, "app"); @@ -452,6 +608,7 @@ static int rcar_gen4_add_dw_pcie(struct rcar_gen4_pcie *rcar) rcar->mode = pd->mode; rcar->start_link_enable = pd->start_link_enable; + rcar->additional_common_init = pd->additional_common_init; switch (rcar->mode) { case DW_PCIE_RC_TYPE: @@ -521,6 +678,31 @@ static int r8a779f0_pcie_start_link_enable(struct rcar_gen4_pcie *rcar) return 0; } +static int rcar_gen4_pcie_start_link_enable(struct rcar_gen4_pcie *rcar) +{ + return rcar_gen4_pcie_enable_phy(rcar); +} + +static void rcar_gen4_pcie_additional_common_init(struct rcar_gen4_pcie *rcar) +{ + struct dw_pcie *dw = &rcar->dw; + u32 val; + + /* + * The SoC manual said the register setting is required. Otherwise, + * linkup failed. + */ + val = dw_pcie_readl_dbi(dw, PCIE_PORT_LANE_SKEW); + val &= ~PORT_LANE_SKEW_INSERT_MASK; + if (dw->num_lanes < 4) + val |= BIT(6); + dw_pcie_writel_dbi(dw, PCIE_PORT_LANE_SKEW, val); + + val = readl(rcar->base + PCIEPWRMNGCTRL); + val |= APP_CLK_REQ_N | APP_CLK_PM_EN; + writel(val, rcar->base + PCIEPWRMNGCTRL); +} + static struct rcar_gen4_pcie_platdata platdata_r8a779f0_pcie = { .mode = DW_PCIE_RC_TYPE, .start_link_enable = r8a779f0_pcie_start_link_enable, @@ -533,10 +715,14 @@ static struct rcar_gen4_pcie_platdata platdata_r8a779f0_pcie_ep = { static struct rcar_gen4_pcie_platdata platdata_rcar_gen4_pcie = { .mode = DW_PCIE_RC_TYPE, + .start_link_enable = rcar_gen4_pcie_start_link_enable, + .additional_common_init = rcar_gen4_pcie_additional_common_init, }; static struct rcar_gen4_pcie_platdata platdata_rcar_gen4_pcie_ep = { .mode = DW_PCIE_EP_TYPE, + .start_link_enable = rcar_gen4_pcie_start_link_enable, + .additional_common_init = rcar_gen4_pcie_additional_common_init, }; static const struct of_device_id rcar_gen4_pcie_of_match[] = { From patchwork Tue Mar 26 02:45:40 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yoshihiro Shimoda X-Patchwork-Id: 13603304 X-Patchwork-Delegate: kw@linux.com Received: from relmlie6.idc.renesas.com (relmlor2.renesas.com [210.160.252.172]) by smtp.subspace.kernel.org (Postfix) with ESMTP id A6974128813; Tue, 26 Mar 2024 02:51:10 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=210.160.252.172 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1711421472; cv=none; b=XdfgQA09t3UirwnXw441ckig4yNzKTF9PfBbHyYRWYeMLgwrCQ2RH30PKaVUBpipPX19KdJgQJPBlJ0kGgY+WZRX3sctcszGGbqNqeQQamPBEjcNIeCYTEA0RqMwgBBId0LW/D0640OdA2RGRVCa62KCfrpS9KMhU+tCpoI2jrY= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1711421472; c=relaxed/simple; bh=MircnBo8gMN/tRscpv5Kv/YMtYFg6OFJGzBm1hrVGK8=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=hakUiFUNJYCH58yfYfol3STp+67piKAEyfv30+VtwIby1hsxE0uH72/4CEwbdMUPf2UVZhh6sk60qSkw057Gtf6gWFhpgwp3fI157rACtf7eXpD6u4hhfV1tzwpiQk9TumOtzSL+cgw+82VRkuKpt62m1e0lek7uiMx48C1wlxY= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=renesas.com; spf=pass smtp.mailfrom=renesas.com; arc=none smtp.client-ip=210.160.252.172 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=renesas.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=renesas.com X-IronPort-AV: E=Sophos;i="6.07,154,1708354800"; d="scan'208";a="203200850" Received: from unknown (HELO relmlir6.idc.renesas.com) ([10.200.68.152]) by relmlie6.idc.renesas.com with ESMTP; 26 Mar 2024 11:45:58 +0900 Received: from localhost.localdomain (unknown [10.166.13.99]) by relmlir6.idc.renesas.com (Postfix) with ESMTP id 5AAB5415E8CA; Tue, 26 Mar 2024 11:45:58 +0900 (JST) From: Yoshihiro Shimoda To: lpieralisi@kernel.org, kw@linux.com, robh@kernel.org, bhelgaas@google.com, krzysztof.kozlowski+dt@linaro.org, conor+dt@kernel.org, jingoohan1@gmail.com, gustavo.pimentel@synopsys.com, mani@kernel.org Cc: marek.vasut+renesas@gmail.com, linux-pci@vger.kernel.org, devicetree@vger.kernel.org, linux-renesas-soc@vger.kernel.org, Yoshihiro Shimoda , Geert Uytterhoeven Subject: [PATCH v2 6/6] misc: pci_endpoint_test: Add Device ID for R-Car V4H PCIe controller Date: Tue, 26 Mar 2024 11:45:40 +0900 Message-Id: <20240326024540.2336155-7-yoshihiro.shimoda.uh@renesas.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20240326024540.2336155-1-yoshihiro.shimoda.uh@renesas.com> References: <20240326024540.2336155-1-yoshihiro.shimoda.uh@renesas.com> Precedence: bulk X-Mailing-List: linux-pci@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Add Renesas R8A779G0 in pci_device_id table so that pci-epf-test can be used for testing PCIe EP on R-Car V4H. Signed-off-by: Yoshihiro Shimoda Reviewed-by: Geert Uytterhoeven --- drivers/misc/pci_endpoint_test.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/misc/pci_endpoint_test.c b/drivers/misc/pci_endpoint_test.c index c38a6083f0a7..2fa3c6473c7d 100644 --- a/drivers/misc/pci_endpoint_test.c +++ b/drivers/misc/pci_endpoint_test.c @@ -83,6 +83,7 @@ #define PCI_DEVICE_ID_RENESAS_R8A774C0 0x002d #define PCI_DEVICE_ID_RENESAS_R8A774E1 0x0025 #define PCI_DEVICE_ID_RENESAS_R8A779F0 0x0031 +#define PCI_DEVICE_ID_RENESAS_R8A779G0 0x0030 static DEFINE_IDA(pci_endpoint_test_ida); @@ -1005,6 +1006,9 @@ static const struct pci_device_id pci_endpoint_test_tbl[] = { { PCI_DEVICE(PCI_VENDOR_ID_RENESAS, PCI_DEVICE_ID_RENESAS_R8A779F0), .driver_data = (kernel_ulong_t)&default_data, }, + { PCI_DEVICE(PCI_VENDOR_ID_RENESAS, PCI_DEVICE_ID_RENESAS_R8A779G0), + .driver_data = (kernel_ulong_t)&default_data, + }, { PCI_DEVICE(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_J721E), .driver_data = (kernel_ulong_t)&j721e_data, },