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Date: Fri, 8 Jan 2021 13:25:41 -0800 From: mgross@...ux.intel.com To: markgross@...nel.org, mgross@...ux.intel.com, arnd@...db.de, bp@...e.de, damien.lemoal@....com, dragan.cvetic@...inx.com, gregkh@...uxfoundation.org, corbet@....net, leonard.crestez@....com, palmerdabbelt@...gle.com, paul.walmsley@...ive.com, peng.fan@....com, robh+dt@...nel.org, shawnguo@...nel.org, jassisinghbrar@...il.com Cc: linux-kernel@...r.kernel.org, Srikanth Thokala <srikanth.thokala@...el.com> Subject: [PATCH v2 15/34] misc: xlink-pcie: Add XLink API interface From: Srikanth Thokala <srikanth.thokala@...el.com> Provide interface for XLink layer to interact with XLink PCIe transport layer on both local host and remote host. Cc: Arnd Bergmann <arnd@...db.de> Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org> Reviewed-by: Mark Gross <mgross@...ux.intel.com> Signed-off-by: Srikanth Thokala <srikanth.thokala@...el.com> --- drivers/misc/xlink-pcie/common/interface.c | 109 +++++++++++++++++++ drivers/misc/xlink-pcie/local_host/Makefile | 1 + drivers/misc/xlink-pcie/remote_host/Makefile | 1 + 3 files changed, 111 insertions(+) create mode 100644 drivers/misc/xlink-pcie/common/interface.c diff --git a/drivers/misc/xlink-pcie/common/interface.c b/drivers/misc/xlink-pcie/common/interface.c new file mode 100644 index 000000000000..56c1d9ed9d8f --- /dev/null +++ b/drivers/misc/xlink-pcie/common/interface.c @@ -0,0 +1,109 @@ +// SPDX-License-Identifier: GPL-2.0-only +/***************************************************************************** + * + * Intel Keem Bay XLink PCIe Driver + * + * Copyright (C) 2020 Intel Corporation + * + ****************************************************************************/ + +#include <linux/xlink_drv_inf.h> + +#include "core.h" +#include "xpcie.h" + +/* Define xpcie driver interface API */ +int xlink_pcie_get_device_list(u32 *sw_device_id_list, u32 *num_devices) +{ + if (!sw_device_id_list || !num_devices) + return -EINVAL; + + *num_devices = intel_xpcie_get_device_num(sw_device_id_list); + + return 0; +} +EXPORT_SYMBOL(xlink_pcie_get_device_list); + +int xlink_pcie_get_device_name(u32 sw_device_id, char *device_name, + size_t name_size) +{ + if (!device_name) + return -EINVAL; + + return intel_xpcie_get_device_name_by_id(sw_device_id, + device_name, name_size); +} +EXPORT_SYMBOL(xlink_pcie_get_device_name); + +int xlink_pcie_get_device_status(u32 sw_device_id, u32 *device_status) +{ + u32 status; + int rc; + + if (!device_status) + return -EINVAL; + + rc = intel_xpcie_get_device_status_by_id(sw_device_id, &status); + if (rc) + return rc; + + switch (status) { + case XPCIE_STATUS_READY: + case XPCIE_STATUS_RUN: + *device_status = _XLINK_DEV_READY; + break; + case XPCIE_STATUS_ERROR: + *device_status = _XLINK_DEV_ERROR; + break; + case XPCIE_STATUS_RECOVERY: + *device_status = _XLINK_DEV_RECOVERY; + break; + case XPCIE_STATUS_OFF: + *device_status = _XLINK_DEV_OFF; + break; + default: + *device_status = _XLINK_DEV_BUSY; + break; + } + + return 0; +} +EXPORT_SYMBOL(xlink_pcie_get_device_status); + +int xlink_pcie_boot_device(u32 sw_device_id, const char *binary_name) +{ + return 0; +} +EXPORT_SYMBOL(xlink_pcie_boot_device); + +int xlink_pcie_connect(u32 sw_device_id) +{ + return intel_xpcie_pci_connect_device(sw_device_id); +} +EXPORT_SYMBOL(xlink_pcie_connect); + +int xlink_pcie_read(u32 sw_device_id, void *data, size_t *const size, + u32 timeout) +{ + if (!data || !size) + return -EINVAL; + + return intel_xpcie_pci_read(sw_device_id, data, size, timeout); +} +EXPORT_SYMBOL(xlink_pcie_read); + +int xlink_pcie_write(u32 sw_device_id, void *data, size_t *const size, + u32 timeout) +{ + if (!data || !size) + return -EINVAL; + + return intel_xpcie_pci_write(sw_device_id, data, size, timeout); +} +EXPORT_SYMBOL(xlink_pcie_write); + +int xlink_pcie_reset_device(u32 sw_device_id) +{ + return intel_xpcie_pci_reset_device(sw_device_id); +} +EXPORT_SYMBOL(xlink_pcie_reset_device); diff --git a/drivers/misc/xlink-pcie/local_host/Makefile b/drivers/misc/xlink-pcie/local_host/Makefile index 65df94c7e860..16bb1e7345ac 100644 --- a/drivers/misc/xlink-pcie/local_host/Makefile +++ b/drivers/misc/xlink-pcie/local_host/Makefile @@ -3,3 +3,4 @@ mxlk_ep-objs := epf.o mxlk_ep-objs += dma.o mxlk_ep-objs += core.o mxlk_ep-objs += ../common/util.o +mxlk_ep-objs += ../common/interface.o diff --git a/drivers/misc/xlink-pcie/remote_host/Makefile b/drivers/misc/xlink-pcie/remote_host/Makefile index e8074dbb1161..088e121ad46e 100644 --- a/drivers/misc/xlink-pcie/remote_host/Makefile +++ b/drivers/misc/xlink-pcie/remote_host/Makefile @@ -3,3 +3,4 @@ mxlk-objs := main.o mxlk-objs += pci.o mxlk-objs += core.o mxlk-objs += ../common/util.o +mxlk-objs += ../common/interface.o -- 2.17.1
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