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Thu, 20 Aug 2020 20:54:49 -0700 (PDT) Received: from xps15.herring.priv ([64.188.179.249]) by smtp.googlemail.com with ESMTPSA id 79sm413923ilc.9.2020.08.20.20.54.44 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 20 Aug 2020 20:54:48 -0700 (PDT) From: Rob Herring To: Bjorn Helgaas , Lorenzo Pieralisi Subject: [PATCH v2 05/40] PCI: dwc: al: Use pci_ops for child config space accessors Date: Thu, 20 Aug 2020 21:53:45 -0600 Message-Id: <20200821035420.380495-6-robh@kernel.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200821035420.380495-1-robh@kernel.org> References: <20200821035420.380495-1-robh@kernel.org> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200821_045453_588813_A10AB29C X-CRM114-Status: GOOD ( 14.85 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Kunihiko Hayashi , Neil Armstrong , linux-pci@vger.kernel.org, Binghui Wang , Bjorn Andersson , Masahiro Yamada , Thierry Reding , linux-arm-kernel@axis.com, Jonathan Chocron , Jonathan Hunter , Fabio Estevam , Jerome Brunet , Marc Zyngier , Jesper Nilsson , linux-samsung-soc@vger.kernel.org, Dilip Kota , Kevin Hilman , Pratyush Anand , Krzysztof Kozlowski , Kishon Vijay Abraham I , Kukjin Kim , NXP Linux Team , Xiaowei Song , Richard Zhu , Martin Blumenstingl , linux-arm-msm@vger.kernel.org, Sascha Hauer , Yue Wang , Murali Karicheri , linux-tegra@vger.kernel.org, linux-amlogic@lists.infradead.org, linux-omap@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Jingoo Han , Andy Gross , Stanimir Varbanov , Pengutronix Kernel Team , Gustavo Pimentel , Shawn Guo , Shawn Guo , Lucas Stach Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Now that DWC drivers can setup their own pci_ops for the root and child buses, convert the Amazon driver to use the standard pci_ops for child bus config accesses. Cc: Jonathan Chocron Cc: Lorenzo Pieralisi Cc: Bjorn Helgaas Signed-off-by: Rob Herring --- drivers/pci/controller/dwc/pcie-al.c | 63 ++++++---------------------- 1 file changed, 13 insertions(+), 50 deletions(-) diff --git a/drivers/pci/controller/dwc/pcie-al.c b/drivers/pci/controller/dwc/pcie-al.c index d57d4ee15848..59e33d3a8380 100644 --- a/drivers/pci/controller/dwc/pcie-al.c +++ b/drivers/pci/controller/dwc/pcie-al.c @@ -217,14 +217,15 @@ static inline void al_pcie_target_bus_set(struct al_pcie *pcie, reg); } -static void __iomem *al_pcie_conf_addr_map(struct al_pcie *pcie, - unsigned int busnr, - unsigned int devfn) +static void __iomem *al_pcie_conf_addr_map_bus(struct pci_bus *bus, + unsigned int devfn, int where) { + struct pcie_port *pp = bus->sysdata; + struct al_pcie *pcie = to_al_pcie(to_dw_pcie_from_pp(pp)); + unsigned int busnr = bus->number; struct al_pcie_target_bus_cfg *target_bus_cfg = &pcie->target_bus_cfg; unsigned int busnr_ecam = busnr & target_bus_cfg->ecam_mask; unsigned int busnr_reg = busnr & target_bus_cfg->reg_mask; - struct pcie_port *pp = &pcie->pci->pp; void __iomem *pci_base_addr; pci_base_addr = (void __iomem *)((uintptr_t)pp->va_cfg0_base + @@ -240,52 +241,14 @@ static void __iomem *al_pcie_conf_addr_map(struct al_pcie *pcie, target_bus_cfg->reg_mask); } - return pci_base_addr; -} - -static int al_pcie_rd_other_conf(struct pcie_port *pp, struct pci_bus *bus, - unsigned int devfn, int where, int size, - u32 *val) -{ - struct dw_pcie *pci = to_dw_pcie_from_pp(pp); - struct al_pcie *pcie = to_al_pcie(pci); - unsigned int busnr = bus->number; - void __iomem *pci_addr; - int rc; - - pci_addr = al_pcie_conf_addr_map(pcie, busnr, devfn); - - rc = dw_pcie_read(pci_addr + where, size, val); - - dev_dbg(pci->dev, "%d-byte config read from %04x:%02x:%02x.%d offset 0x%x (pci_addr: 0x%px) - val:0x%x\n", - size, pci_domain_nr(bus), bus->number, - PCI_SLOT(devfn), PCI_FUNC(devfn), where, - (pci_addr + where), *val); - - return rc; + return pci_base_addr + where; } -static int al_pcie_wr_other_conf(struct pcie_port *pp, struct pci_bus *bus, - unsigned int devfn, int where, int size, - u32 val) -{ - struct dw_pcie *pci = to_dw_pcie_from_pp(pp); - struct al_pcie *pcie = to_al_pcie(pci); - unsigned int busnr = bus->number; - void __iomem *pci_addr; - int rc; - - pci_addr = al_pcie_conf_addr_map(pcie, busnr, devfn); - - rc = dw_pcie_write(pci_addr + where, size, val); - - dev_dbg(pci->dev, "%d-byte config write to %04x:%02x:%02x.%d offset 0x%x (pci_addr: 0x%px) - val:0x%x\n", - size, pci_domain_nr(bus), bus->number, - PCI_SLOT(devfn), PCI_FUNC(devfn), where, - (pci_addr + where), val); - - return rc; -} +static struct pci_ops al_child_pci_ops = { + .map_bus = al_pcie_conf_addr_map_bus, + .read = pci_generic_config_read, + .write = pci_generic_config_write, +}; static void al_pcie_config_prepare(struct al_pcie *pcie) { @@ -339,6 +302,8 @@ static int al_pcie_host_init(struct pcie_port *pp) struct al_pcie *pcie = to_al_pcie(pci); int rc; + pp->bridge->child_ops = &al_child_pci_ops; + rc = al_pcie_rev_id_get(pcie, &pcie->controller_rev_id); if (rc) return rc; @@ -353,8 +318,6 @@ static int al_pcie_host_init(struct pcie_port *pp) } static const struct dw_pcie_host_ops al_pcie_host_ops = { - .rd_other_conf = al_pcie_rd_other_conf, - .wr_other_conf = al_pcie_wr_other_conf, .host_init = al_pcie_host_init, }; -- 2.25.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel