![Wesley Sheng](/assets/img/avatar_default.png)
The Switchtec devices supports two PCIe Function Frameworks (PFFs) per upstream port (one for the port itself and one for the management endoint), and each PFF may have up to 255 ports. Previously the driver only supported 48 of those ports, and the SWITCHTEC_IOCTL_EVENT_SUMMARY ioctl only returned information about those 48. Increase SWITCHTEC_MAX_PFF_CSR from 48 to 255 so the driver supports all 255 possible ports. Rename SWITCHTEC_IOCTL_EVENT_SUMMARY and associated struct switchtec_ioctl_event_summary to SWITCHTEC_IOCTL_EVENT_SUMMARY_LEGACY and switchtec_ioctl_event_summary_legacy with so existing applications work unchanged, supporting up to 48 ports. Add replacement SWITCHTEC_IOCTL_EVENT_SUMMARY and struct switchtec_ioctl_event_summary that new and recompiled applications support up to 255 ports. Signed-off-by: Wesley Sheng <wesley.sheng@microchip.com> [bhelgaas: changelog] Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Logan Gunthorpe <logang@deltatee.com>
414 lines
8.7 KiB
C
414 lines
8.7 KiB
C
/*
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* Microsemi Switchtec PCIe Driver
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* Copyright (c) 2017, Microsemi Corporation
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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*/
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#ifndef _SWITCHTEC_H
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#define _SWITCHTEC_H
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#include <linux/pci.h>
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#include <linux/cdev.h>
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#define SWITCHTEC_MRPC_PAYLOAD_SIZE 1024
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#define SWITCHTEC_MAX_PFF_CSR 255
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#define SWITCHTEC_EVENT_OCCURRED BIT(0)
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#define SWITCHTEC_EVENT_CLEAR BIT(0)
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#define SWITCHTEC_EVENT_EN_LOG BIT(1)
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#define SWITCHTEC_EVENT_EN_CLI BIT(2)
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#define SWITCHTEC_EVENT_EN_IRQ BIT(3)
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#define SWITCHTEC_EVENT_FATAL BIT(4)
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#define SWITCHTEC_DMA_MRPC_EN BIT(0)
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enum {
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SWITCHTEC_GAS_MRPC_OFFSET = 0x0000,
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SWITCHTEC_GAS_TOP_CFG_OFFSET = 0x1000,
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SWITCHTEC_GAS_SW_EVENT_OFFSET = 0x1800,
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SWITCHTEC_GAS_SYS_INFO_OFFSET = 0x2000,
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SWITCHTEC_GAS_FLASH_INFO_OFFSET = 0x2200,
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SWITCHTEC_GAS_PART_CFG_OFFSET = 0x4000,
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SWITCHTEC_GAS_NTB_OFFSET = 0x10000,
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SWITCHTEC_GAS_PFF_CSR_OFFSET = 0x134000,
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};
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struct mrpc_regs {
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u8 input_data[SWITCHTEC_MRPC_PAYLOAD_SIZE];
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u8 output_data[SWITCHTEC_MRPC_PAYLOAD_SIZE];
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u32 cmd;
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u32 status;
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u32 ret_value;
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u32 dma_en;
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u64 dma_addr;
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u32 dma_vector;
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u32 dma_ver;
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} __packed;
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enum mrpc_status {
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SWITCHTEC_MRPC_STATUS_INPROGRESS = 1,
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SWITCHTEC_MRPC_STATUS_DONE = 2,
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SWITCHTEC_MRPC_STATUS_ERROR = 0xFF,
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SWITCHTEC_MRPC_STATUS_INTERRUPTED = 0x100,
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};
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struct sw_event_regs {
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u64 event_report_ctrl;
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u64 reserved1;
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u64 part_event_bitmap;
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u64 reserved2;
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u32 global_summary;
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u32 reserved3[3];
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u32 stack_error_event_hdr;
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u32 stack_error_event_data;
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u32 reserved4[4];
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u32 ppu_error_event_hdr;
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u32 ppu_error_event_data;
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u32 reserved5[4];
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u32 isp_error_event_hdr;
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u32 isp_error_event_data;
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u32 reserved6[4];
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u32 sys_reset_event_hdr;
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u32 reserved7[5];
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u32 fw_exception_hdr;
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u32 reserved8[5];
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u32 fw_nmi_hdr;
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u32 reserved9[5];
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u32 fw_non_fatal_hdr;
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u32 reserved10[5];
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u32 fw_fatal_hdr;
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u32 reserved11[5];
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u32 twi_mrpc_comp_hdr;
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u32 twi_mrpc_comp_data;
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u32 reserved12[4];
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u32 twi_mrpc_comp_async_hdr;
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u32 twi_mrpc_comp_async_data;
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u32 reserved13[4];
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u32 cli_mrpc_comp_hdr;
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u32 cli_mrpc_comp_data;
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u32 reserved14[4];
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u32 cli_mrpc_comp_async_hdr;
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u32 cli_mrpc_comp_async_data;
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u32 reserved15[4];
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u32 gpio_interrupt_hdr;
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u32 gpio_interrupt_data;
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u32 reserved16[4];
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u32 gfms_event_hdr;
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u32 gfms_event_data;
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u32 reserved17[4];
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} __packed;
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enum {
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SWITCHTEC_CFG0_RUNNING = 0x04,
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SWITCHTEC_CFG1_RUNNING = 0x05,
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SWITCHTEC_IMG0_RUNNING = 0x03,
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SWITCHTEC_IMG1_RUNNING = 0x07,
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};
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struct sys_info_regs {
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u32 device_id;
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u32 device_version;
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u32 firmware_version;
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u32 reserved1;
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u32 vendor_table_revision;
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u32 table_format_version;
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u32 partition_id;
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u32 cfg_file_fmt_version;
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u16 cfg_running;
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u16 img_running;
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u32 reserved2[57];
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char vendor_id[8];
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char product_id[16];
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char product_revision[4];
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char component_vendor[8];
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u16 component_id;
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u8 component_revision;
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} __packed;
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struct flash_info_regs {
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u32 flash_part_map_upd_idx;
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struct active_partition_info {
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u32 address;
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u32 build_version;
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u32 build_string;
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} active_img;
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struct active_partition_info active_cfg;
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struct active_partition_info inactive_img;
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struct active_partition_info inactive_cfg;
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u32 flash_length;
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struct partition_info {
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u32 address;
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u32 length;
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} cfg0;
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struct partition_info cfg1;
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struct partition_info img0;
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struct partition_info img1;
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struct partition_info nvlog;
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struct partition_info vendor[8];
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};
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enum {
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SWITCHTEC_NTB_REG_INFO_OFFSET = 0x0000,
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SWITCHTEC_NTB_REG_CTRL_OFFSET = 0x4000,
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SWITCHTEC_NTB_REG_DBMSG_OFFSET = 0x64000,
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};
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struct ntb_info_regs {
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u8 partition_count;
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u8 partition_id;
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u16 reserved1;
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u64 ep_map;
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u16 requester_id;
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u16 reserved2;
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u32 reserved3[4];
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struct nt_partition_info {
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u32 xlink_enabled;
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u32 target_part_low;
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u32 target_part_high;
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u32 reserved;
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} ntp_info[48];
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} __packed;
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struct part_cfg_regs {
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u32 status;
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u32 state;
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u32 port_cnt;
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u32 usp_port_mode;
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u32 usp_pff_inst_id;
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u32 vep_pff_inst_id;
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u32 dsp_pff_inst_id[47];
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u32 reserved1[11];
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u16 vep_vector_number;
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u16 usp_vector_number;
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u32 port_event_bitmap;
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u32 reserved2[3];
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u32 part_event_summary;
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u32 reserved3[3];
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u32 part_reset_hdr;
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u32 part_reset_data[5];
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u32 mrpc_comp_hdr;
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u32 mrpc_comp_data[5];
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u32 mrpc_comp_async_hdr;
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u32 mrpc_comp_async_data[5];
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u32 dyn_binding_hdr;
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u32 dyn_binding_data[5];
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u32 reserved4[159];
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} __packed;
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enum {
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NTB_CTRL_PART_OP_LOCK = 0x1,
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NTB_CTRL_PART_OP_CFG = 0x2,
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NTB_CTRL_PART_OP_RESET = 0x3,
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NTB_CTRL_PART_STATUS_NORMAL = 0x1,
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NTB_CTRL_PART_STATUS_LOCKED = 0x2,
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NTB_CTRL_PART_STATUS_LOCKING = 0x3,
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NTB_CTRL_PART_STATUS_CONFIGURING = 0x4,
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NTB_CTRL_PART_STATUS_RESETTING = 0x5,
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NTB_CTRL_BAR_VALID = 1 << 0,
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NTB_CTRL_BAR_DIR_WIN_EN = 1 << 4,
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NTB_CTRL_BAR_LUT_WIN_EN = 1 << 5,
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NTB_CTRL_REQ_ID_EN = 1 << 0,
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NTB_CTRL_LUT_EN = 1 << 0,
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NTB_PART_CTRL_ID_PROT_DIS = 1 << 0,
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};
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struct ntb_ctrl_regs {
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u32 partition_status;
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u32 partition_op;
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u32 partition_ctrl;
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u32 bar_setup;
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u32 bar_error;
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u16 lut_table_entries;
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u16 lut_table_offset;
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u32 lut_error;
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u16 req_id_table_size;
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u16 req_id_table_offset;
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u32 req_id_error;
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u32 reserved1[7];
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struct {
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u32 ctl;
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u32 win_size;
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u64 xlate_addr;
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} bar_entry[6];
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struct {
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u32 win_size;
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u32 reserved[3];
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} bar_ext_entry[6];
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u32 reserved2[192];
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u32 req_id_table[512];
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u32 reserved3[256];
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u64 lut_entry[512];
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} __packed;
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#define NTB_DBMSG_IMSG_STATUS BIT_ULL(32)
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#define NTB_DBMSG_IMSG_MASK BIT_ULL(40)
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struct ntb_dbmsg_regs {
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u32 reserved1[1024];
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u64 odb;
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u64 odb_mask;
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u64 idb;
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u64 idb_mask;
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u8 idb_vec_map[64];
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u32 msg_map;
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u32 reserved2;
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struct {
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u32 msg;
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u32 status;
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} omsg[4];
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struct {
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u32 msg;
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u8 status;
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u8 mask;
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u8 src;
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u8 reserved;
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} imsg[4];
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u8 reserved3[3928];
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u8 msix_table[1024];
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u8 reserved4[3072];
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u8 pba[24];
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u8 reserved5[4072];
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} __packed;
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enum {
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SWITCHTEC_PART_CFG_EVENT_RESET = 1 << 0,
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SWITCHTEC_PART_CFG_EVENT_MRPC_CMP = 1 << 1,
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SWITCHTEC_PART_CFG_EVENT_MRPC_ASYNC_CMP = 1 << 2,
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SWITCHTEC_PART_CFG_EVENT_DYN_PART_CMP = 1 << 3,
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};
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struct pff_csr_regs {
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u16 vendor_id;
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u16 device_id;
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u16 pcicmd;
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u16 pcists;
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u32 pci_class;
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u32 pci_opts;
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union {
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u32 pci_bar[6];
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u64 pci_bar64[3];
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};
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u32 pci_cardbus;
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u32 pci_subsystem_id;
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u32 pci_expansion_rom;
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u32 pci_cap_ptr;
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u32 reserved1;
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u32 pci_irq;
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u32 pci_cap_region[48];
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u32 pcie_cap_region[448];
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u32 indirect_gas_window[128];
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u32 indirect_gas_window_off;
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u32 reserved[127];
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u32 pff_event_summary;
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u32 reserved2[3];
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u32 aer_in_p2p_hdr;
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u32 aer_in_p2p_data[5];
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u32 aer_in_vep_hdr;
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u32 aer_in_vep_data[5];
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u32 dpc_hdr;
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u32 dpc_data[5];
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u32 cts_hdr;
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u32 cts_data[5];
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u32 reserved3[6];
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u32 hotplug_hdr;
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u32 hotplug_data[5];
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u32 ier_hdr;
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u32 ier_data[5];
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u32 threshold_hdr;
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u32 threshold_data[5];
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u32 power_mgmt_hdr;
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u32 power_mgmt_data[5];
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u32 tlp_throttling_hdr;
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u32 tlp_throttling_data[5];
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u32 force_speed_hdr;
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u32 force_speed_data[5];
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u32 credit_timeout_hdr;
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u32 credit_timeout_data[5];
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u32 link_state_hdr;
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u32 link_state_data[5];
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u32 reserved4[174];
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} __packed;
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struct switchtec_ntb;
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struct dma_mrpc_output {
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u32 status;
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u32 cmd_id;
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u32 rtn_code;
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u32 output_size;
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u8 data[SWITCHTEC_MRPC_PAYLOAD_SIZE];
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};
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struct switchtec_dev {
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struct pci_dev *pdev;
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struct device dev;
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struct cdev cdev;
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int partition;
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int partition_count;
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int pff_csr_count;
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char pff_local[SWITCHTEC_MAX_PFF_CSR];
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void __iomem *mmio;
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struct mrpc_regs __iomem *mmio_mrpc;
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struct sw_event_regs __iomem *mmio_sw_event;
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struct sys_info_regs __iomem *mmio_sys_info;
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struct flash_info_regs __iomem *mmio_flash_info;
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struct ntb_info_regs __iomem *mmio_ntb;
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struct part_cfg_regs __iomem *mmio_part_cfg;
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struct part_cfg_regs __iomem *mmio_part_cfg_all;
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struct pff_csr_regs __iomem *mmio_pff_csr;
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/*
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* The mrpc mutex must be held when accessing the other
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* mrpc_ fields, alive flag and stuser->state field
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*/
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struct mutex mrpc_mutex;
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struct list_head mrpc_queue;
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int mrpc_busy;
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struct work_struct mrpc_work;
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struct delayed_work mrpc_timeout;
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bool alive;
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wait_queue_head_t event_wq;
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atomic_t event_cnt;
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struct work_struct link_event_work;
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void (*link_notifier)(struct switchtec_dev *stdev);
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u8 link_event_count[SWITCHTEC_MAX_PFF_CSR];
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struct switchtec_ntb *sndev;
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struct dma_mrpc_output *dma_mrpc;
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dma_addr_t dma_mrpc_dma_addr;
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};
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static inline struct switchtec_dev *to_stdev(struct device *dev)
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{
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return container_of(dev, struct switchtec_dev, dev);
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}
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extern struct class *switchtec_class;
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#endif
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