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path: root/drivers/pci/controller/pcie-mobiveil.c
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2019-11-28Merge branch 'remotes/lorenzo/pci/mmio-dma-ranges'Bjorn Helgaas
- Consolidate DT "dma-ranges" parsing and convert all host drivers to use shared parsing (Rob Herring) * remotes/lorenzo/pci/mmio-dma-ranges: PCI: Make devm_of_pci_get_host_bridge_resources() static PCI: rcar: Use inbound resources for setup PCI: iproc: Use inbound resources for setup PCI: xgene: Use inbound resources for setup PCI: v3-semi: Use inbound resources for setup PCI: ftpci100: Use inbound resources for setup PCI: of: Add inbound resource parsing to helpers PCI: versatile: Enable COMPILE_TEST PCI: versatile: Remove usage of PHYS_OFFSET PCI: versatile: Use pci_parse_request_of_pci_ranges() PCI: xilinx-nwl: Use pci_parse_request_of_pci_ranges() PCI: xilinx: Use pci_parse_request_of_pci_ranges() PCI: xgene: Use pci_parse_request_of_pci_ranges() PCI: v3-semi: Use pci_parse_request_of_pci_ranges() PCI: rockchip: Drop storing driver private outbound resource data PCI: rockchip: Use pci_parse_request_of_pci_ranges() PCI: mobiveil: Use pci_parse_request_of_pci_ranges() PCI: mediatek: Use pci_parse_request_of_pci_ranges() PCI: iproc: Use pci_parse_request_of_pci_ranges() PCI: faraday: Use pci_parse_request_of_pci_ranges() PCI: dwc: Use pci_parse_request_of_pci_ranges() PCI: altera: Use pci_parse_request_of_pci_ranges() PCI: aardvark: Use pci_parse_request_of_pci_ranges() PCI: Export pci_parse_request_of_pci_ranges() resource: Add a resource_list_first_type helper # Conflicts: # drivers/pci/controller/pcie-rcar.c
2019-11-20PCI: of: Add inbound resource parsing to helpersRob Herring
Extend devm_of_pci_get_host_bridge_resources() and pci_parse_request_of_pci_ranges() helpers to also parse the inbound addresses from DT 'dma-ranges' and populate a resource list with the translated addresses. This will help ensure 'dma-ranges' is always parsed in a consistent way. Tested-by: Srinath Mannam <srinath.mannam@broadcom.com> Tested-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com> # for AArdvark Signed-off-by: Rob Herring <robh@kernel.org> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Reviewed-by: Srinath Mannam <srinath.mannam@broadcom.com> Reviewed-by: Andrew Murray <andrew.murray@arm.com> Acked-by: Gustavo Pimentel <gustavo.pimentel@synopsys.com> Cc: Jingoo Han <jingoohan1@gmail.com> Cc: Gustavo Pimentel <gustavo.pimentel@synopsys.com> Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: Thomas Petazzoni <thomas.petazzoni@bootlin.com> Cc: Will Deacon <will@kernel.org> Cc: Linus Walleij <linus.walleij@linaro.org> Cc: Toan Le <toan@os.amperecomputing.com> Cc: Ley Foon Tan <lftan@altera.com> Cc: Tom Joseph <tjoseph@cadence.com> Cc: Ray Jui <rjui@broadcom.com> Cc: Scott Branden <sbranden@broadcom.com> Cc: bcm-kernel-feedback-list@broadcom.com Cc: Ryder Lee <ryder.lee@mediatek.com> Cc: Karthikeyan Mitran <m.karthikeyan@mobiveil.co.in> Cc: Hou Zhiqiang <Zhiqiang.Hou@nxp.com> Cc: Simon Horman <horms@verge.net.au> Cc: Shawn Lin <shawn.lin@rock-chips.com> Cc: Heiko Stuebner <heiko@sntech.de> Cc: Michal Simek <michal.simek@xilinx.com> Cc: rfi@lists.rocketboards.org Cc: linux-mediatek@lists.infradead.org Cc: linux-renesas-soc@vger.kernel.org Cc: linux-rockchip@lists.infradead.org
2019-10-29PCI: mobiveil: Use pci_parse_request_of_pci_ranges()Rob Herring
Convert the Mobiveil host bridge to use the common pci_parse_request_of_pci_ranges(). There's no need to assign the resources to a temporary list first. Just use bridge->windows directly and remove all the temporary list handling. Signed-off-by: Rob Herring <robh@kernel.org> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Reviewed-by: Andrew Murray <andrew.murray@arm.com> Reviewed-by: Hou Zhiqiang <Zhiqiang.Hou@nxp.com> Cc: Karthikeyan Mitran <m.karthikeyan@mobiveil.co.in> Cc: Hou Zhiqiang <Zhiqiang.Hou@nxp.com> Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Cc: Bjorn Helgaas <bhelgaas@google.com>
2019-10-15PCI: mobiveil: Fix csr_read()/write() build issueKefeng Wang
RISCV has csr_read()/write() macros in arch/riscv/include/asm/csr.h. The same function naming is used in the PCI mobiveil driver thus causing build error. Rename csr_[read,write][l,] to mobiveil_csr_read()/write() to fix it. drivers/pci/controller/pcie-mobiveil.c:238:69: error: macro "csr_read" passed 3 arguments, but takes just 1 static u32 csr_read(struct mobiveil_pcie *pcie, u32 off, size_t size) drivers/pci/controller/pcie-mobiveil.c:253:80: error: macro "csr_write" passed 4 arguments, but takes just 2 static void csr_write(struct mobiveil_pcie *pcie, u32 val, u32 off, size_t size) Fixes: bcbe0d9a8d93 ("PCI: mobiveil: Unify register accessors") Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Reviewed-by: Andrew Murray <andrew.murray@arm.com> Cc: Hou Zhiqiang <Zhiqiang.Hou@nxp.com> Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Cc: Minghuan Lian <Minghuan.Lian@nxp.com> Cc: Subrahmanya Lingappa <l.subrahmanya@mobiveil.co.in> Cc: Andrew Murray <andrew.murray@arm.com>
2019-08-21PCI: mobiveil: Fix the CPU base address setup in inbound windowHou Zhiqiang
Current code erroneously sets-up the CPU base address through the parameter 'pci_addr', which is passed to initialize the CPU (AXI) base address of the inbound window where the controller maps the PCI address space into CPU physical address space; furthermore, it also truncates it by programming only the lower 32-bit value into the inbound CPU address register. Fix both issues by introducing a new parameter 'u64 cpu_addr' to initialize both lower 32-bit and upper 32-bit of the CPU physical base address mapping PCI inbound transactions into CPU (AXI) ones. Fixes: 9af6bcb11e12 ("PCI: mobiveil: Add Mobiveil PCIe Host Bridge IP driver") Signed-off-by: Hou Zhiqiang <Zhiqiang.Hou@nxp.com> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Reviewed-by: Minghuan Lian <Minghuan.Lian@nxp.com> Reviewed-by: Subrahmanya Lingappa <l.subrahmanya@mobiveil.co.in>
2019-07-08PCI: mobiveil: Fix INTx interrupt clearing in mobiveil_pcie_isr()Hou Zhiqiang
The current INTx handling function clears all interrupts after handling the first pending; this can potentially cause missing INTx detection. Fix the code to clear only the handled INTx IRQ. Fixes: 9af6bcb11e12 ("PCI: mobiveil: Add Mobiveil PCIe Host Bridge IP driver") Signed-off-by: Hou Zhiqiang <Zhiqiang.Hou@nxp.com> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Reviewed-by: Minghuan Lian <Minghuan.Lian@nxp.com> Reviewed-by: Subrahmanya Lingappa <l.subrahmanya@mobiveil.co.in> Acked-by: Karthikeyan Mitran <m.karthikeyan@mobiveil.co.in> Tested-by: Karthikeyan Mitran <m.karthikeyan@mobiveil.co.in>
2019-07-08PCI: mobiveil: Fix infinite-loop in the INTx handling functionHou Zhiqiang
In the loop handling INTx interrupts in mobiveil_pcie_isr(), there is no code to update the loop control variable, which is causing an infinite loop. Fix the code by reading the interrupt status registers inside the loop. Fixes: 9af6bcb11e12 ("PCI: mobiveil: Add Mobiveil PCIe Host Bridge IP driver") Signed-off-by: Hou Zhiqiang <Zhiqiang.Hou@nxp.com> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Reviewed-by: Minghuan Lian <Minghuan.Lian@nxp.com> Reviewed-by: Subrahmanya Lingappa <l.subrahmanya@mobiveil.co.in> Acked-by: Karthikeyan Mitran <m.karthikeyan@mobiveil.co.in> Tested-by: Karthikeyan Mitran <m.karthikeyan@mobiveil.co.in>
2019-07-08PCI: mobiveil: Move PCIe PIO enablement out of inbound window routineHou Zhiqiang
Move the PCIe PIO master enablement to function mobiveil_host_init(). Signed-off-by: Hou Zhiqiang <Zhiqiang.Hou@nxp.com> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Reviewed-by: Minghuan Lian <Minghuan.Lian@nxp.com> Reviewed-by: Subrahmanya Lingappa <l.subrahmanya@mobiveil.co.in>
2019-07-08PCI: mobiveil: Add upper 32-bit PCI base address setup in inbound windowHou Zhiqiang
Current code erroneously sets-up the lower 32-bit PCI base address in the inbound window, which results in inbound transactions not working in 64-bit platforms. Fixes: 9af6bcb11e12 ("PCI: mobiveil: Add Mobiveil PCIe Host Bridge IP driver") Signed-off-by: Hou Zhiqiang <Zhiqiang.Hou@nxp.com> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Reviewed-by: Minghuan Lian <Minghuan.Lian@nxp.com> Reviewed-by: Subrahmanya Lingappa <l.subrahmanya@mobiveil.co.in>
2019-07-08PCI: mobiveil: Add upper 32-bit CPU base address setup in outbound windowHou Zhiqiang
Current code erroneously sets-up only the lower 32-bit CPU base address in the outbound window, which results in outbound transactions not working in 64-bit platforms. Fix it. Fixes: 9af6bcb11e12 ("PCI: mobiveil: Add Mobiveil PCIe Host Bridge IP driver") Signed-off-by: Hou Zhiqiang <Zhiqiang.Hou@nxp.com> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Reviewed-by: Minghuan Lian <Minghuan.Lian@nxp.com> Reviewed-by: Subrahmanya Lingappa <l.subrahmanya@mobiveil.co.in>
2019-07-08PCI: mobiveil: Mask out hardcoded bits in inbound/outbound windows setupHou Zhiqiang
The lower 10 bits of window size field are hardcoded to zero in HW so they can't really be changed but the lower 10-bit of PAB_AXI_AMAP_CTRL register are used for control fields, so while programming inbound and outbout windows decoding we should mask out the lower 10-bit of window size to prevent overriding the control bits. Signed-off-by: Hou Zhiqiang <Zhiqiang.Hou@nxp.com> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Reviewed-by: Minghuan Lian <Minghuan.Lian@nxp.com> Reviewed-by: Subrahmanya Lingappa <l.subrahmanya@mobiveil.co.in>
2019-07-08PCI: mobiveil: Clear the control fields before updating itHou Zhiqiang
While programming the inbound and outbound windows in program_{ib/ob}_windows() we shoud clear the control fields in the registers before programming it with a new value to prevent stale bits from older configuration. Signed-off-by: Hou Zhiqiang <Zhiqiang.Hou@nxp.com> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Reviewed-by: Minghuan Lian <Minghuan.Lian@nxp.com> Reviewed-by: Subrahmanya Lingappa <l.subrahmanya@mobiveil.co.in>
2019-07-08PCI: mobiveil: Add configured inbound windows counterHou Zhiqiang
Current code only keeps track of the number of outbound windows configured but it does not for inbound windows. Add a counter to keep track of initialized inbound windows. Signed-off-by: Hou Zhiqiang <Zhiqiang.Hou@nxp.com> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Reviewed-by: Minghuan Lian <Minghuan.Lian@nxp.com> Reviewed-by: Subrahmanya Lingappa <l.subrahmanya@mobiveil.co.in>
2019-07-08PCI: mobiveil: Fix the valid check for inbound and outbound windowsHou Zhiqiang
In program_ib/ob_windows() check the window index from the function parameter instead of the total number of initialized windows to determine if the specified window is valid. Fixes: 9af6bcb11e12 ("PCI: mobiveil: Add Mobiveil PCIe Host Bridge IP driver") Signed-off-by: Hou Zhiqiang <Zhiqiang.Hou@nxp.com> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Reviewed-by: Minghuan Lian <Minghuan.Lian@nxp.com> Reviewed-by: Subrahmanya Lingappa <l.subrahmanya@mobiveil.co.in>
2019-07-08PCI: mobiveil: Clean-up program_{ib/ob}_windows()Hou Zhiqiang
In function program_ob_windows(), remove the redundant read operations to registers PAB_AXI_AMAP_AXI_WIN and PAB_AXI_AMAP_PEX_WIN_H, and remove the useless definition of 'value'. Rename the parameter 'config_io_bit' to 'type' and then remove the definition of 'type'. In function program_ib_windows(), remove the definitions of 'pio_ctrl_val' and 'amap_ctrl_dw' and reduce to only one variable 'value' to keep the temporary value read from registers. Signed-off-by: Hou Zhiqiang <Zhiqiang.Hou@nxp.com> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Reviewed-by: Minghuan Lian <Minghuan.Lian@nxp.com> Reviewed-by: Subrahmanya Lingappa <l.subrahmanya@mobiveil.co.in>
2019-07-08PCI: mobiveil: Remove an unnecessary return value checkHou Zhiqiang
The memory for the host controller private structure (struct mobiveil_pcie) is allocated together with the pci_host_bridge structure in function devm_pci_alloc_host_bridge(), so it is unnecessary to check the return value when get the private structure pointer. Remove the useless check. Signed-off-by: Hou Zhiqiang <Zhiqiang.Hou@nxp.com> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Reviewed-by: Minghuan Lian <Minghuan.Lian@nxp.com> Reviewed-by: Subrahmanya Lingappa <l.subrahmanya@mobiveil.co.in>
2019-07-08PCI: mobiveil: Fix error return valuesHou Zhiqiang
Some error return values in the host controller driver are either unconventional or plain wrong. Update them all with the expected return values. Signed-off-by: Hou Zhiqiang <Zhinqiang.Hou@nxp.com> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Reviewed-by: Minghuan Lian <Minghuan.Lian@nxp.com> Reviewed-by: Subrahmanya Lingappa <l.subrahmanya@mobiveil.co.in>
2019-07-08PCI: mobiveil: Refactor the MEM/IO outbound window initializationHou Zhiqiang
Move the resource type check into an if/else block and only set-up the outbound window for MEM and IO resource. No functional change intended. Signed-off-by: Hou Zhiqiang <Zhiqiang.Hou@nxp.com> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Reviewed-by: Minghuan Lian <Minghuan.Lian@nxp.com>
2019-07-08PCI: mobiveil: Make some register updates more readableHou Zhiqiang
To make some register updates more readable use a temporary value to hold the register value and carry out the update. Change the register update sequence to: - Read out the original value from the target register - Update the value - Program the updated value back to the register Signed-off-by: Hou Zhiqiang <Zhiqiang.Hou@nxp.com> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Reviewed-by: Minghuan Lian <Minghuan.Lian@nxp.com>
2019-07-08PCI: mobiveil: Reformat the code for readabilityHou Zhiqiang
Reformat the code to make it more readable. No functional change intended. Signed-off-by: Hou Zhiqiang <Zhiqiang.Hou@nxp.com> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Reviewed-by: Minghuan Lian <Minghuan.Lian@nxp.com>
2019-07-08PCI: mobiveil: Fix devfn check in mobiveil_pcie_valid_device()Hou Zhiqiang
Current check for devfn number in mobiveil_pci_valid_device() is wrong in that it flags as invalid functions present in PCI device 0 in the root bus while it is perfectly valid to access all functions in PCI device 0 in the root bus. Update the check in mobiveil_pci_valid_device() to fix the issue. Fixes: 9af6bcb11e12 ("PCI: mobiveil: Add Mobiveil PCIe Host Bridge IP driver") Signed-off-by: Hou Zhiqiang <Zhiqiang.Hou@nxp.com> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Reviewed-by: Minghuan Lian <Minghuan.Lian@nxp.com>
2019-07-08PCI: mobiveil: Initialize Primary/Secondary/Subordinate bus numbersHou Zhiqiang
The reset value of Primary, Secondary and Subordinate bus numbers is zero which is a broken setup. Program a sensible default value for Primary/Secondary/Subordinate bus numbers. Signed-off-by: Hou Zhiqiang <Zhiqiang.Hou@nxp.com> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Reviewed-by: Minghuan Lian <Minghuan.Lian@nxp.com> Reviewed-by: Subrahmanya Lingappa <l.subrahmanya@mobiveil.co.in>
2019-07-08PCI: mobiveil: Move IRQ chained handler setup out of DT parseHou Zhiqiang
The irq_set_chained_handler_and_data() call is not dependent on device tree firmware so it should be moved out of the DT parsing function for clarity. Signed-off-by: Hou Zhiqiang <Zhiqiang.Hou@nxp.com> [lorenzo.pieralisi@arm.com: rewritten commit log] Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Reviewed-by: Minghuan Lian <Minghuan.Lian@nxp.com> Reviewed-by: Subrahmanya Lingappa <l.subrahmanya@mobiveil.co.in>
2019-07-08PCI: mobiveil: Move the link up waiting out of mobiveil_host_init()Hou Zhiqiang
The host initializing sequence does not depend on the PCIe link being up, so move the link up check right before the code scanning the root bus for enumeration. Signed-off-by: Hou Zhiqiang <Zhiqiang.Hou@nxp.com> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Reviewed-by: Minghuan Lian <Minghuan.Lian@nxp.com> Reviewed-by: Subrahmanya Lingappa <l.subrahmanya@mobiveil.co.in>
2019-07-08PCI: mobiveil: Fix the Class Code fieldHou Zhiqiang
Fix up the Class Code field in PCI configuration space and set it to PCI_CLASS_BRIDGE_PCI. Move the Class Code fixup to function mobiveil_host_init() where it belongs. Fixes: 9af6bcb11e12 ("PCI: mobiveil: Add Mobiveil PCIe Host Bridge IP driver") Signed-off-by: Hou Zhiqiang <Zhiqiang.Hou@nxp.com> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Reviewed-by: Minghuan Lian <Minghuan.Lian@nxp.com> Reviewed-by: Subrahmanya Lingappa <l.subrahmanya@mobiveil.co.in>
2019-07-08PCI: mobiveil: Use the 1st inbound window for MEM inbound transactionsHou Zhiqiang
The inbound and outbound windows have completely separate control registers sets in the host controller MMIO space. Windows control register are accessed through an MMIO base address and an offset that depends on the window index. Since inbound and outbound windows control registers are completely separate there is no real need to use different window indexes in the inbound/outbound windows initialization routines to prevent clashing. To fix this inconsistency, change the MEM inbound window index to 0, mirroring the outbound window set-up. Signed-off-by: Hou Zhiqiang <Zhiqiang.Hou@nxp.com> [lorenzo.pieralisi@arm.com: update commit log] Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Reviewed-by: Minghuan Lian <Minghuan.Lian@nxp.com> Reviewed-by: Subrahmanya Lingappa <l.subrahmanya@mobiveil.co.in>
2019-07-08PCI: mobiveil: Use WIN_NUM_0 explicitly for CFG outbound windowHou Zhiqiang
As the .map_bus() use the WIN_NUM_0 for CFG transactions, it is appropriate to pass WIN_NUM_0 explicitly when initializing the CFG outbound window rather than implicitly relying on the ob_wins_configure counter. Signed-off-by: Hou Zhiqiang <Zhiqiang.Hou@nxp.com> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Reviewed-by: Minghuan Lian <Minghuan.Lian@nxp.com> Reviewed-by: Subrahmanya Lingappa <l.subrahmanya@mobiveil.co.in>
2019-07-08PCI: mobiveil: Update the resource list traversal functionHou Zhiqiang
Code that executes the resource list traversal does not need to delete any node therefore using the *_safe() API version is useless. Replace function resource_list_for_each_entry_safe() with the resource_list_for_each_entry() counterpart. Signed-off-by: Hou Zhiqiang <Zhiqiang.Hou@nxp.com> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Reviewed-by: Minghuan Lian <Minghuan.Lian@nxp.com> Reviewed-by: Subrahmanya Lingappa <l.subrahmanya@mobiveil.co.in>
2019-07-08PCI: mobiveil: Fix PCI base address in MEM/IO outbound windowsHou Zhiqiang
The outbound memory windows PCI base addresses should be taken from the 'ranges' property of DT node to setup MEM/IO outbound windows decoding correctly instead of being hardcoded to zero. Update the code to retrieve the PCI base address for each range and use it to program the outbound windows address decoders Fixes: 9af6bcb11e12 ("PCI: mobiveil: Add Mobiveil PCIe Host Bridge IP driver") Signed-off-by: Hou Zhiqiang <Zhiqiang.Hou@nxp.com> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Reviewed-by: Minghuan Lian <Minghuan.Lian@nxp.com> Reviewed-by: Subrahmanya Lingappa <l.subrahmanya@mobiveil.co.in>
2019-07-08PCI: mobiveil: Remove the flag MSI_FLAG_MULTI_PCI_MSIHou Zhiqiang
The Mobiveil internal MSI controller requires separate target addresses, one per MSI vector; this is clearly incompatible with the Multiple MSI feature, which requires the same target address for all vectors requested by an endpoint (ie the Message Address field in the MSI Capability structure), so the multi MSI feature is clearly not supported by the host controller driver. Remove the flag MSI_FLAG_MULTI_PCI_MSI and with it multi MSI support, fixing the misconfiguration. Fixes: 1e913e58335f ("PCI: mobiveil: Add MSI support") Signed-off-by: Hou Zhiqiang <Zhiqiang.Hou@nxp.com> [lorenzo.pieralisi@arm.com: commit log] Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Reviewed-by: Minghuan Lian <Minghuan.Lian@nxp.com>
2019-07-08PCI: mobiveil: Unify register accessorsHou Zhiqiang
It is confusing to have two sets of functions to read/write registers, some with csr_readl()/csr_writel(), while others with read_paged_register()/write_paged_register(). In the register space the lower 3KB of 4KB PCIe configure space can be accessed directly and higher 1KB through a simple paging mechanism. Unify the register accessors in csr_readl() and csr_writel() by comparing the register offset with page access boundary 3KB in the accessor internal so that the paging mechanism is hidden behind the csr_read()/write() common function calls. Signed-off-by: Hou Zhiqiang <Zhiqiang.Hou@nxp.com> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Reviewed-by: Minghuan Lian <Minghuan.Lian@nxp.com> Reviewed-by: Subrahmanya Lingappa <l.subrahmanya@mobiveil.co.in>
2018-09-25PCI: Remove unnecessary check of device_type == pciRob Herring
PCI host drivers have already matched on compatible strings, so checking device_type is redundant. Also, device_type is considered deprecated for FDT though we've still been requiring it for PCI hosts as it is useful for finding PCI buses. Signed-off-by: Rob Herring <robh@kernel.org> [lorenzo.pieralisi@arm.com: reformatted the log] Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Acked-by: Alan Douglas <adouglas@cadence.com> Acked-by: Subrahmaya Lingappa <l.subrahmanya@mobiveil.co.in> Acked-by: Michal Simek <michal.simek@xilinx.com> Cc: Will Deacon <will.deacon@arm.com> Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: Alan Douglas <adouglas@cadence.com> Cc: Subrahmanya Lingappa <l.subrahmanya@mobiveil.co.in> Cc: Michal Simek <michal.simek@xilinx.com> Cc: linux-pci@vger.kernel.org Cc: linux-arm-kernel@lists.infradead.org
2018-07-30PCI: mobiveil: Add missing ../pci.h includeLorenzo Pieralisi
PCI mobiveil host controller driver currently fails to compile with the following error: drivers/pci/controller/pcie-mobiveil.c: In function 'mobiveil_pcie_probe': drivers/pci/controller/pcie-mobiveil.c:788:8: error: implicit declaration of function 'devm_of_pci_get_host_bridge_resources'; did you mean 'pci_get_host_bridge_device'? [-Werror=implicit-function-declaration] ret = devm_of_pci_get_host_bridge_resources(dev, 0, 0xff, ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ pci_get_host_bridge_device Add the missing include file to pull in the required function declaration. Fixes: 9af6bcb11e12 ("PCI: mobiveil: Add Mobiveil PCIe Host Bridge IP driver") Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: Subrahmanya Lingappa <l.subrahmanya@mobiveil.co.in>
2018-07-30PCI: mobiveil: Fix struct mobiveil_pcie.pcie_reg_base address typeLorenzo Pieralisi
The field pcie_reg_base in struct mobiveil_pcie represents a physical address so it should be of phys_addr_t type rather than void __iomem*; this results in the following compilation warnings: drivers/pci/controller/pcie-mobiveil.c: In function 'mobiveil_pcie_parse_dt': drivers/pci/controller/pcie-mobiveil.c:326:22: warning: assignment makes pointer from integer without a cast [-Wint-conversion] pcie->pcie_reg_base = res->start; ^ drivers/pci/controller/pcie-mobiveil.c: In function 'mobiveil_pcie_enable_msi': drivers/pci/controller/pcie-mobiveil.c:485:25: warning: initialization makes integer from pointer without a cast [-Wint-conversion] phys_addr_t msg_addr = pcie->pcie_reg_base; ^~~~ drivers/pci/controller/pcie-mobiveil.c: In function 'mobiveil_compose_msi_msg': drivers/pci/controller/pcie-mobiveil.c:640:21: warning: initialization makes integer from pointer without a cast [-Wint-conversion] phys_addr_t addr = pcie->pcie_reg_base + (data->hwirq * sizeof(int)); Fix the type and with it the compilation warnings. Fixes: 9af6bcb11e12 ("PCI: mobiveil: Add Mobiveil PCIe Host Bridge IP driver") Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: Subrahmanya Lingappa <l.subrahmanya@mobiveil.co.in>
2018-07-26PCI: mobiveil: Integer overflow in IB_WIN_SIZEDan Carpenter
IB_WIN_SIZE is larger than INT_MAX so we need to cast it to u64. Fixes: 9af6bcb11e12 ("PCI: mobiveil: Add Mobiveil PCIe Host Bridge IP driver") Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
2018-06-08PCI: Collect all native drivers under drivers/pci/controller/Shawn Lin
Native PCI drivers for root complex devices were originally all in drivers/pci/host/. Some of these devices can also be operated in endpoint mode. Drivers for endpoint mode didn't seem to fit in the "host" directory, so we put both the root complex and endpoint drivers in per-device directories, e.g., drivers/pci/dwc/, drivers/pci/cadence/, etc. These per-device directories contain trivial Kconfig and Makefiles and clutter drivers/pci/. Make a new drivers/pci/controllers/ directory and collect all the device-specific drivers there. No functional change intended. Link: https://lkml.kernel.org/r/1520304202-232891-1-git-send-email-shawn.lin@rock-chips.com Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com> [bhelgaas: changelog] Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>