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linux_dsm_epyc7002/drivers/pci/host/pcie-designware.h

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PCI: exynos: Split into Synopsys part and Exynos part Exynos PCIe IP consists of Synopsys specific part and Exynos specific part. Only core block is a Synopsys Designware part; other parts are Exynos specific. Also, the Synopsys Designware part can be shared with other platforms; thus, it can be split two parts such as Synopsys Designware part and Exynos specific part. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Cc: Pratyush Anand <pratyush.anand@st.com> Cc: Mohit KUMAR <Mohit.KUMAR@st.com>
2013-07-31 15:14:10 +07:00
/*
* Synopsys Designware PCIe host controller driver
*
* Copyright (C) 2013 Samsung Electronics Co., Ltd.
* http://www.samsung.com
*
* Author: Jingoo Han <jg1.han@samsung.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
PCI: designware: Add header guards Add header guards to prevent redundant inclusion. Signed-off-by: Seungwon Jeon <tgih.jun@samsung.com> Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2013-10-09 22:12:21 +07:00
#ifndef _PCIE_DESIGNWARE_H
#define _PCIE_DESIGNWARE_H
PCI: exynos: Add support for MSI This patch adds support for Message Signaled Interrupt in the Exynos PCIe driver using Synopsys designware PCIe core IP. Signed-off-by: Siva Reddy Kallam <siva.kallam@samsung.com> Signed-off-by: Srikanth T Shivanand <ts.srikanth@samsung.com> Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Cc: Pratyush Anand <pratyush.anand@st.com> Cc: Mohit KUMAR <Mohit.KUMAR@st.com>
2013-09-06 13:54:59 +07:00
/*
* Maximum number of MSI IRQs can be 256 per controller. But keep
* it 32 as of now. Probably we will never need more than 32. If needed,
* then increment it in multiple of 32.
*/
#define MAX_MSI_IRQS 32
#define MAX_MSI_CTRLS (MAX_MSI_IRQS / 32)
PCI: exynos: Split into Synopsys part and Exynos part Exynos PCIe IP consists of Synopsys specific part and Exynos specific part. Only core block is a Synopsys Designware part; other parts are Exynos specific. Also, the Synopsys Designware part can be shared with other platforms; thus, it can be split two parts such as Synopsys Designware part and Exynos specific part. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Cc: Pratyush Anand <pratyush.anand@st.com> Cc: Mohit KUMAR <Mohit.KUMAR@st.com>
2013-07-31 15:14:10 +07:00
struct pcie_port {
struct device *dev;
u8 root_bus_nr;
void __iomem *dbi_base;
u64 cfg0_base;
PCI: designware: Program ATU with untranslated address In DRA7, the CPU sees 32-bit addresses, but the PCIe controller can see only 28-bit addresses. So whenever the CPU issues a read/write request, the 4 most significant bits are used by L3 to determine the target controller. For example, the CPU reserves [mem 0x20000000-0x2fffffff] for the PCIe controller but the PCIe controller will see only [0x00000000-0x0fffffff]. For programming the outbound translation window the *base* should be programmed as 0x00000000. Whenever we try to write to, e.g., 0x20000000, it will be translated to whatever we have programmed in the translation window with base as 0x00000000. This is needed when the dt node is modelled something like this: axi { compatible = "simple-bus"; #size-cells = <1>; #address-cells = <1>; ranges = <0x0 0x20000000 0x10000000 // 28-bit bus 0x51000000 0x51000000 0x3000>; pcie@51000000 { reg = <0x1000 0x2000>, <0x51002000 0x14c>, <0x51000000 0x2000>; reg-names = "config", "ti_conf", "rc_dbics"; #address-cells = <3>; #size-cells = <2>; ranges = <0x81000000 0 0 0x03000 0 0x00010000 0x82000000 0 0x20013000 0x13000 0 0xffed000>; }; }; Here the CPU address for configuration space is 0x20013000 and the controller address for configuration space is 0x13000. The controller address should be used while programming the ATU (in order for translation to happen properly in DRA7xx). Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Mohit Kumar <mohit.kumar@st.com> Cc: Jason Gunthorpe <jgunthorpe@obsidianresearch.com> Cc: Jingoo Han <jg1.han@samsung.com> Cc: Marek Vasut <marex@denx.de> Cc: Arnd Bergmann <arnd@arndb.de>
2014-07-17 16:00:41 +07:00
u64 cfg0_mod_base;
PCI: exynos: Split into Synopsys part and Exynos part Exynos PCIe IP consists of Synopsys specific part and Exynos specific part. Only core block is a Synopsys Designware part; other parts are Exynos specific. Also, the Synopsys Designware part can be shared with other platforms; thus, it can be split two parts such as Synopsys Designware part and Exynos specific part. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Cc: Pratyush Anand <pratyush.anand@st.com> Cc: Mohit KUMAR <Mohit.KUMAR@st.com>
2013-07-31 15:14:10 +07:00
void __iomem *va_cfg0_base;
PCI: designware: Fold struct pcie_port_info into struct pcie_port The struct pcie_port_info doesn't contain any exclusive information compared to other elements of struct pcie_port. So, keeping a separate structure does not seem very logical. Therefore remove this struct and embed its elements directly into struct pcie_port. Signed-off-by: Pratyush Anand <pratyush.anand@st.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Acked-by: Mohit Kumar <mohit.kumar@st.com>
2014-09-06 06:48:54 +07:00
u32 cfg0_size;
PCI: exynos: Split into Synopsys part and Exynos part Exynos PCIe IP consists of Synopsys specific part and Exynos specific part. Only core block is a Synopsys Designware part; other parts are Exynos specific. Also, the Synopsys Designware part can be shared with other platforms; thus, it can be split two parts such as Synopsys Designware part and Exynos specific part. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Cc: Pratyush Anand <pratyush.anand@st.com> Cc: Mohit KUMAR <Mohit.KUMAR@st.com>
2013-07-31 15:14:10 +07:00
u64 cfg1_base;
PCI: designware: Program ATU with untranslated address In DRA7, the CPU sees 32-bit addresses, but the PCIe controller can see only 28-bit addresses. So whenever the CPU issues a read/write request, the 4 most significant bits are used by L3 to determine the target controller. For example, the CPU reserves [mem 0x20000000-0x2fffffff] for the PCIe controller but the PCIe controller will see only [0x00000000-0x0fffffff]. For programming the outbound translation window the *base* should be programmed as 0x00000000. Whenever we try to write to, e.g., 0x20000000, it will be translated to whatever we have programmed in the translation window with base as 0x00000000. This is needed when the dt node is modelled something like this: axi { compatible = "simple-bus"; #size-cells = <1>; #address-cells = <1>; ranges = <0x0 0x20000000 0x10000000 // 28-bit bus 0x51000000 0x51000000 0x3000>; pcie@51000000 { reg = <0x1000 0x2000>, <0x51002000 0x14c>, <0x51000000 0x2000>; reg-names = "config", "ti_conf", "rc_dbics"; #address-cells = <3>; #size-cells = <2>; ranges = <0x81000000 0 0 0x03000 0 0x00010000 0x82000000 0 0x20013000 0x13000 0 0xffed000>; }; }; Here the CPU address for configuration space is 0x20013000 and the controller address for configuration space is 0x13000. The controller address should be used while programming the ATU (in order for translation to happen properly in DRA7xx). Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Mohit Kumar <mohit.kumar@st.com> Cc: Jason Gunthorpe <jgunthorpe@obsidianresearch.com> Cc: Jingoo Han <jg1.han@samsung.com> Cc: Marek Vasut <marex@denx.de> Cc: Arnd Bergmann <arnd@arndb.de>
2014-07-17 16:00:41 +07:00
u64 cfg1_mod_base;
PCI: exynos: Split into Synopsys part and Exynos part Exynos PCIe IP consists of Synopsys specific part and Exynos specific part. Only core block is a Synopsys Designware part; other parts are Exynos specific. Also, the Synopsys Designware part can be shared with other platforms; thus, it can be split two parts such as Synopsys Designware part and Exynos specific part. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Cc: Pratyush Anand <pratyush.anand@st.com> Cc: Mohit KUMAR <Mohit.KUMAR@st.com>
2013-07-31 15:14:10 +07:00
void __iomem *va_cfg1_base;
PCI: designware: Fold struct pcie_port_info into struct pcie_port The struct pcie_port_info doesn't contain any exclusive information compared to other elements of struct pcie_port. So, keeping a separate structure does not seem very logical. Therefore remove this struct and embed its elements directly into struct pcie_port. Signed-off-by: Pratyush Anand <pratyush.anand@st.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Acked-by: Mohit Kumar <mohit.kumar@st.com>
2014-09-06 06:48:54 +07:00
u32 cfg1_size;
PCI: exynos: Split into Synopsys part and Exynos part Exynos PCIe IP consists of Synopsys specific part and Exynos specific part. Only core block is a Synopsys Designware part; other parts are Exynos specific. Also, the Synopsys Designware part can be shared with other platforms; thus, it can be split two parts such as Synopsys Designware part and Exynos specific part. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Cc: Pratyush Anand <pratyush.anand@st.com> Cc: Mohit KUMAR <Mohit.KUMAR@st.com>
2013-07-31 15:14:10 +07:00
u64 io_base;
PCI: designware: Program ATU with untranslated address In DRA7, the CPU sees 32-bit addresses, but the PCIe controller can see only 28-bit addresses. So whenever the CPU issues a read/write request, the 4 most significant bits are used by L3 to determine the target controller. For example, the CPU reserves [mem 0x20000000-0x2fffffff] for the PCIe controller but the PCIe controller will see only [0x00000000-0x0fffffff]. For programming the outbound translation window the *base* should be programmed as 0x00000000. Whenever we try to write to, e.g., 0x20000000, it will be translated to whatever we have programmed in the translation window with base as 0x00000000. This is needed when the dt node is modelled something like this: axi { compatible = "simple-bus"; #size-cells = <1>; #address-cells = <1>; ranges = <0x0 0x20000000 0x10000000 // 28-bit bus 0x51000000 0x51000000 0x3000>; pcie@51000000 { reg = <0x1000 0x2000>, <0x51002000 0x14c>, <0x51000000 0x2000>; reg-names = "config", "ti_conf", "rc_dbics"; #address-cells = <3>; #size-cells = <2>; ranges = <0x81000000 0 0 0x03000 0 0x00010000 0x82000000 0 0x20013000 0x13000 0 0xffed000>; }; }; Here the CPU address for configuration space is 0x20013000 and the controller address for configuration space is 0x13000. The controller address should be used while programming the ATU (in order for translation to happen properly in DRA7xx). Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Mohit Kumar <mohit.kumar@st.com> Cc: Jason Gunthorpe <jgunthorpe@obsidianresearch.com> Cc: Jingoo Han <jg1.han@samsung.com> Cc: Marek Vasut <marex@denx.de> Cc: Arnd Bergmann <arnd@arndb.de>
2014-07-17 16:00:41 +07:00
u64 io_mod_base;
PCI: designware: Fold struct pcie_port_info into struct pcie_port The struct pcie_port_info doesn't contain any exclusive information compared to other elements of struct pcie_port. So, keeping a separate structure does not seem very logical. Therefore remove this struct and embed its elements directly into struct pcie_port. Signed-off-by: Pratyush Anand <pratyush.anand@st.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Acked-by: Mohit Kumar <mohit.kumar@st.com>
2014-09-06 06:48:54 +07:00
phys_addr_t io_bus_addr;
u32 io_size;
PCI: exynos: Split into Synopsys part and Exynos part Exynos PCIe IP consists of Synopsys specific part and Exynos specific part. Only core block is a Synopsys Designware part; other parts are Exynos specific. Also, the Synopsys Designware part can be shared with other platforms; thus, it can be split two parts such as Synopsys Designware part and Exynos specific part. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Cc: Pratyush Anand <pratyush.anand@st.com> Cc: Mohit KUMAR <Mohit.KUMAR@st.com>
2013-07-31 15:14:10 +07:00
u64 mem_base;
PCI: designware: Program ATU with untranslated address In DRA7, the CPU sees 32-bit addresses, but the PCIe controller can see only 28-bit addresses. So whenever the CPU issues a read/write request, the 4 most significant bits are used by L3 to determine the target controller. For example, the CPU reserves [mem 0x20000000-0x2fffffff] for the PCIe controller but the PCIe controller will see only [0x00000000-0x0fffffff]. For programming the outbound translation window the *base* should be programmed as 0x00000000. Whenever we try to write to, e.g., 0x20000000, it will be translated to whatever we have programmed in the translation window with base as 0x00000000. This is needed when the dt node is modelled something like this: axi { compatible = "simple-bus"; #size-cells = <1>; #address-cells = <1>; ranges = <0x0 0x20000000 0x10000000 // 28-bit bus 0x51000000 0x51000000 0x3000>; pcie@51000000 { reg = <0x1000 0x2000>, <0x51002000 0x14c>, <0x51000000 0x2000>; reg-names = "config", "ti_conf", "rc_dbics"; #address-cells = <3>; #size-cells = <2>; ranges = <0x81000000 0 0 0x03000 0 0x00010000 0x82000000 0 0x20013000 0x13000 0 0xffed000>; }; }; Here the CPU address for configuration space is 0x20013000 and the controller address for configuration space is 0x13000. The controller address should be used while programming the ATU (in order for translation to happen properly in DRA7xx). Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Mohit Kumar <mohit.kumar@st.com> Cc: Jason Gunthorpe <jgunthorpe@obsidianresearch.com> Cc: Jingoo Han <jg1.han@samsung.com> Cc: Marek Vasut <marex@denx.de> Cc: Arnd Bergmann <arnd@arndb.de>
2014-07-17 16:00:41 +07:00
u64 mem_mod_base;
PCI: designware: Fold struct pcie_port_info into struct pcie_port The struct pcie_port_info doesn't contain any exclusive information compared to other elements of struct pcie_port. So, keeping a separate structure does not seem very logical. Therefore remove this struct and embed its elements directly into struct pcie_port. Signed-off-by: Pratyush Anand <pratyush.anand@st.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Acked-by: Mohit Kumar <mohit.kumar@st.com>
2014-09-06 06:48:54 +07:00
phys_addr_t mem_bus_addr;
u32 mem_size;
PCI: exynos: Split into Synopsys part and Exynos part Exynos PCIe IP consists of Synopsys specific part and Exynos specific part. Only core block is a Synopsys Designware part; other parts are Exynos specific. Also, the Synopsys Designware part can be shared with other platforms; thus, it can be split two parts such as Synopsys Designware part and Exynos specific part. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Cc: Pratyush Anand <pratyush.anand@st.com> Cc: Mohit KUMAR <Mohit.KUMAR@st.com>
2013-07-31 15:14:10 +07:00
struct resource cfg;
struct resource io;
struct resource mem;
PCI: designware: Parse bus-range property from devicetree This allows to explicitly specify the covered bus numbers in the devicetree, which will come in handy once we see a SoC with more than one PCIe host controller instance. Previously the driver relied on the behavior of pci_scan_root_bus() to fill in a range of 0x00-0xff if no valid range was found. We fall back to the same range if no valid DT entry was found to keep backwards compatibility, but now do it explicitly. [bhelgaas: use %pR in error message to avoid duplication] Signed-off-by: Lucas Stach <l.stach@pengutronix.de> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Pratyush Anand <pratyush.anand@st.com> Acked-by: Mohit Kumar <mohit.kumar@st.com>
2014-07-24 00:52:38 +07:00
struct resource busn;
PCI: exynos: Split into Synopsys part and Exynos part Exynos PCIe IP consists of Synopsys specific part and Exynos specific part. Only core block is a Synopsys Designware part; other parts are Exynos specific. Also, the Synopsys Designware part can be shared with other platforms; thus, it can be split two parts such as Synopsys Designware part and Exynos specific part. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Cc: Pratyush Anand <pratyush.anand@st.com> Cc: Mohit KUMAR <Mohit.KUMAR@st.com>
2013-07-31 15:14:10 +07:00
int irq;
u32 lanes;
struct pcie_host_ops *ops;
PCI: exynos: Add support for MSI This patch adds support for Message Signaled Interrupt in the Exynos PCIe driver using Synopsys designware PCIe core IP. Signed-off-by: Siva Reddy Kallam <siva.kallam@samsung.com> Signed-off-by: Srikanth T Shivanand <ts.srikanth@samsung.com> Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Cc: Pratyush Anand <pratyush.anand@st.com> Cc: Mohit KUMAR <Mohit.KUMAR@st.com>
2013-09-06 13:54:59 +07:00
int msi_irq;
PCI: designware: Add irq_create_mapping() Without irq_create_mapping(), the correct IRQ number cannot be provided. In this case, it makes problems such as NULL dereference. Thus, irq_create_mapping() should be added for MSI. Suggested-by: Kishon Vijay Abraham I <kishon@ti.com> Signed-off-by: Pratyush Anand <pratyush.anand@st.com> Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2013-10-09 19:32:12 +07:00
struct irq_domain *irq_domain;
PCI: exynos: Add support for MSI This patch adds support for Message Signaled Interrupt in the Exynos PCIe driver using Synopsys designware PCIe core IP. Signed-off-by: Siva Reddy Kallam <siva.kallam@samsung.com> Signed-off-by: Srikanth T Shivanand <ts.srikanth@samsung.com> Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Cc: Pratyush Anand <pratyush.anand@st.com> Cc: Mohit KUMAR <Mohit.KUMAR@st.com>
2013-09-06 13:54:59 +07:00
unsigned long msi_data;
DECLARE_BITMAP(msi_irq_in_use, MAX_MSI_IRQS);
PCI: exynos: Split into Synopsys part and Exynos part Exynos PCIe IP consists of Synopsys specific part and Exynos specific part. Only core block is a Synopsys Designware part; other parts are Exynos specific. Also, the Synopsys Designware part can be shared with other platforms; thus, it can be split two parts such as Synopsys Designware part and Exynos specific part. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Cc: Pratyush Anand <pratyush.anand@st.com> Cc: Mohit KUMAR <Mohit.KUMAR@st.com>
2013-07-31 15:14:10 +07:00
};
struct pcie_host_ops {
void (*readl_rc)(struct pcie_port *pp,
void __iomem *dbi_base, u32 *val);
void (*writel_rc)(struct pcie_port *pp,
u32 val, void __iomem *dbi_base);
int (*rd_own_conf)(struct pcie_port *pp, int where, int size, u32 *val);
int (*wr_own_conf)(struct pcie_port *pp, int where, int size, u32 val);
PCI: designware: Add config access-related pcie_host_ops for v3.65 hardware DesignWare v3.65 hardware requires application space registers to be configured to access the remote EP config space. To support this, add rd_other_conf() and wr_other_conf() to pcie_host_ops. [bhelgaas: changelog] Signed-off-by: Murali Karicheri <m-karicheri2@ti.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Pratyush Anand <pratyush.anand@st.com> Acked-by: Mohit Kumar <mohit.kumar@st.com> Acked-by: Jingoo Han <jg1.han@samsung.com> Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com> CC: Russell King <linux@arm.linux.org.uk> CC: Grant Likely <grant.likely@linaro.org> CC: Rob Herring <robh+dt@kernel.org> CC: Richard Zhu <r65037@freescale.com> CC: Kishon Vijay Abraham I <kishon@ti.com> CC: Marek Vasut <marex@denx.de> CC: Arnd Bergmann <arnd@arndb.de> CC: Pawel Moll <pawel.moll@arm.com> CC: Mark Rutland <mark.rutland@arm.com> CC: Ian Campbell <ijc+devicetree@hellion.org.uk> CC: Kumar Gala <galak@codeaurora.org> CC: Randy Dunlap <rdunlap@infradead.org> CC: Grant Likely <grant.likely@linaro.org>
2014-07-21 23:58:41 +07:00
int (*rd_other_conf)(struct pcie_port *pp, struct pci_bus *bus,
unsigned int devfn, int where, int size, u32 *val);
int (*wr_other_conf)(struct pcie_port *pp, struct pci_bus *bus,
unsigned int devfn, int where, int size, u32 val);
PCI: exynos: Split into Synopsys part and Exynos part Exynos PCIe IP consists of Synopsys specific part and Exynos specific part. Only core block is a Synopsys Designware part; other parts are Exynos specific. Also, the Synopsys Designware part can be shared with other platforms; thus, it can be split two parts such as Synopsys Designware part and Exynos specific part. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Cc: Pratyush Anand <pratyush.anand@st.com> Cc: Mohit KUMAR <Mohit.KUMAR@st.com>
2013-07-31 15:14:10 +07:00
int (*link_up)(struct pcie_port *pp);
void (*host_init)(struct pcie_port *pp);
PCI: designware: Add MSI-related pcie_host_ops for v3.65 hardware DesignWare v3.65 hardware implements MSI controller registers in application space. This requires updates to the DesignWare core to support controllers based on this older hardware. Add msi_irq_set()/clear() interfaces to allow Set/Clear MSI IRQ enable bit in the application register. Also, v3.65 hardware uses the MSI_IRQ register in application register space to raise MSI IRQ to the RC from EP. Current code uses the standard mechanism as per PCI spec. So add get_msi_data() to get the address of this register so common code can work on both v3.65 and newer hardware. [bhelgaas: changelog] Signed-off-by: Murali Karicheri <m-karicheri2@ti.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Pratyush Anand <pratyush.anand@st.com> Acked-by: Mohit Kumar <mohit.kumar@st.com> Acked-by: Jingoo Han <jg1.han@samsung.com> Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com> CC: Russell King <linux@arm.linux.org.uk> CC: Grant Likely <grant.likely@linaro.org> CC: Rob Herring <robh+dt@kernel.org> CC: Richard Zhu <r65037@freescale.com> CC: Kishon Vijay Abraham I <kishon@ti.com> CC: Marek Vasut <marex@denx.de> CC: Arnd Bergmann <arnd@arndb.de> CC: Pawel Moll <pawel.moll@arm.com> CC: Mark Rutland <mark.rutland@arm.com> CC: Ian Campbell <ijc+devicetree@hellion.org.uk> CC: Kumar Gala <galak@codeaurora.org> CC: Randy Dunlap <rdunlap@infradead.org> CC: Grant Likely <grant.likely@linaro.org>
2014-07-21 23:58:42 +07:00
void (*msi_set_irq)(struct pcie_port *pp, int irq);
void (*msi_clear_irq)(struct pcie_port *pp, int irq);
PCI: designware: Rename get_msi_data() to get_msi_addr() The struct pcie_host_ops .get_msi_data() method returns the MSI message address. To accurately express its purpose, rename it to .get_msi_addr(). Signed-off-by: Minghuan Lian <Minghuan.Lian@freescale.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Acked-by: Mohit KUMAR <mohit.kumar@st.com>
2014-09-23 21:28:58 +07:00
u32 (*get_msi_addr)(struct pcie_port *pp);
PCI: designware: Add get_msi_data() to pcie_host_ops Add a struct pcie_host_ops .get_msi_data() method for platforms to return their special MSI message data. Signed-off-by: Minghuan Lian <Minghuan.Lian@freescale.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Acked-by: Mohit KUMAR <mohit.kumar@st.com>
2014-09-23 21:28:59 +07:00
u32 (*get_msi_data)(struct pcie_port *pp, int pos);
PCI: designware: Add support for v3.65 hardware The Keystone PCI controller is based on v3.65 DesignWare hardware. This version differs from newer versions of the hardware in functional areas discussed below that make it necessary to change dw_pcie_host_init() to support v3.65 based PCI controller. 1. No support for ATU port. Any ATU-specific resource handling code is to be bypassed for v3.65 h/w. 2. MSI controller uses application space to implement MSI and 32 MSI interrupts are multiplexed over 8 IRQs to the host. Hence the code to process MSI IRQ needs to be different. This patch allows platform driver to provide its own irq_domain_ops ptr to irq_domain_add_linear() through an API callback from the DesignWare core driver. 3. MSI interrupt generation requires EP to write to the RC's application register. So enhance the driver to allow setup of inbound access to MSI IRQ register as a post scan bus API callback. Signed-off-by: Murali Karicheri <m-karicheri2@ti.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Pratyush Anand <pratyush.anand@st.com> Acked-by: Mohit KUMAR <mohit.kumar@st.com> Acked-by: Jingoo Han <jg1.han@samsung.com> CC: Santosh Shilimkar <santosh.shilimkar@ti.com> CC: Russell King <linux@arm.linux.org.uk> CC: Grant Likely <grant.likely@linaro.org> CC: Rob Herring <robh+dt@kernel.org> CC: Jingoo Han <jg1.han@samsung.com> CC: Richard Zhu <r65037@freescale.com> CC: Kishon Vijay Abraham I <kishon@ti.com> CC: Marek Vasut <marex@denx.de> CC: Arnd Bergmann <arnd@arndb.de> CC: Pawel Moll <pawel.moll@arm.com> CC: Mark Rutland <mark.rutland@arm.com> CC: Ian Campbell <ijc+devicetree@hellion.org.uk> CC: Kumar Gala <galak@codeaurora.org> CC: Randy Dunlap <rdunlap@infradead.org> CC: Grant Likely <grant.likely@linaro.org>
2014-07-24 01:54:51 +07:00
void (*scan_bus)(struct pcie_port *pp);
int (*msi_host_init)(struct pcie_port *pp, struct msi_chip *chip);
PCI: exynos: Split into Synopsys part and Exynos part Exynos PCIe IP consists of Synopsys specific part and Exynos specific part. Only core block is a Synopsys Designware part; other parts are Exynos specific. Also, the Synopsys Designware part can be shared with other platforms; thus, it can be split two parts such as Synopsys Designware part and Exynos specific part. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Cc: Pratyush Anand <pratyush.anand@st.com> Cc: Mohit KUMAR <Mohit.KUMAR@st.com>
2013-07-31 15:14:10 +07:00
};
PCI: designware: Add dw_pcie prefix before cfg_read/write The cfg_read/write functions are DesignWare-specific. Add dw_pcie prefix to avoid collision in global name space. Tested-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Pratyush Anand <pratyush.anand@st.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Jagannadha Sutradharudu Teki <jagannadh.teki@gmail.com> Acked-by: Jingoo Han <jg1.han@samsung.com>
2013-12-11 16:38:32 +07:00
int dw_pcie_cfg_read(void __iomem *addr, int where, int size, u32 *val);
int dw_pcie_cfg_write(void __iomem *addr, int where, int size, u32 val);
PCI: designware: Make MSI ISR shared IRQ aware On i.MX6 the host controller MSI IRQ is shared with PCI legacy INTD. Make sure we don't bail too early from the IRQ handler. The issue is fairly theoretical as it would require a system setup with a PCIe switch where one connected device is using legacy INTD and another one using MSI, but better fix it now. Signed-off-by: Lucas Stach <l.stach@pengutronix.de> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Acked-by: Jingoo Han <jg1.han@samsung.com> Acked-by: Richard Zhu <r65037@freescale.com>
2014-03-28 23:52:58 +07:00
irqreturn_t dw_handle_msi_irq(struct pcie_port *pp);
PCI: exynos: Add support for MSI This patch adds support for Message Signaled Interrupt in the Exynos PCIe driver using Synopsys designware PCIe core IP. Signed-off-by: Siva Reddy Kallam <siva.kallam@samsung.com> Signed-off-by: Srikanth T Shivanand <ts.srikanth@samsung.com> Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Cc: Pratyush Anand <pratyush.anand@st.com> Cc: Mohit KUMAR <Mohit.KUMAR@st.com>
2013-09-06 13:54:59 +07:00
void dw_pcie_msi_init(struct pcie_port *pp);
PCI: exynos: Split into Synopsys part and Exynos part Exynos PCIe IP consists of Synopsys specific part and Exynos specific part. Only core block is a Synopsys Designware part; other parts are Exynos specific. Also, the Synopsys Designware part can be shared with other platforms; thus, it can be split two parts such as Synopsys Designware part and Exynos specific part. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Cc: Pratyush Anand <pratyush.anand@st.com> Cc: Mohit KUMAR <Mohit.KUMAR@st.com>
2013-07-31 15:14:10 +07:00
int dw_pcie_link_up(struct pcie_port *pp);
void dw_pcie_setup_rc(struct pcie_port *pp);
int dw_pcie_host_init(struct pcie_port *pp);
PCI: designware: Add header guards Add header guards to prevent redundant inclusion. Signed-off-by: Seungwon Jeon <tgih.jun@samsung.com> Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2013-10-09 22:12:21 +07:00
#endif /* _PCIE_DESIGNWARE_H */
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