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643 lines
22 KiB
643 lines
22 KiB
// SPDX-License-Identifier: GPL-2.0-or-later |
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/* |
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* Copyright 2015 IBM Corp. |
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*/ |
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#include <linux/compiler.h> |
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#include <linux/types.h> |
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#include <linux/delay.h> |
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#include <asm/byteorder.h> |
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#include "hcalls.h" |
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#include "trace.h" |
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#define CXL_HCALL_TIMEOUT 60000 |
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#define CXL_HCALL_TIMEOUT_DOWNLOAD 120000 |
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#define H_ATTACH_CA_PROCESS 0x344 |
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#define H_CONTROL_CA_FUNCTION 0x348 |
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#define H_DETACH_CA_PROCESS 0x34C |
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#define H_COLLECT_CA_INT_INFO 0x350 |
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#define H_CONTROL_CA_FAULTS 0x354 |
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#define H_DOWNLOAD_CA_FUNCTION 0x35C |
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#define H_DOWNLOAD_CA_FACILITY 0x364 |
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#define H_CONTROL_CA_FACILITY 0x368 |
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#define H_CONTROL_CA_FUNCTION_RESET 1 /* perform a reset */ |
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#define H_CONTROL_CA_FUNCTION_SUSPEND_PROCESS 2 /* suspend a process from being executed */ |
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#define H_CONTROL_CA_FUNCTION_RESUME_PROCESS 3 /* resume a process to be executed */ |
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#define H_CONTROL_CA_FUNCTION_READ_ERR_STATE 4 /* read the error state */ |
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#define H_CONTROL_CA_FUNCTION_GET_AFU_ERR 5 /* collect the AFU error buffer */ |
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#define H_CONTROL_CA_FUNCTION_GET_CONFIG 6 /* collect configuration record */ |
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#define H_CONTROL_CA_FUNCTION_GET_DOWNLOAD_STATE 7 /* query to return download status */ |
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#define H_CONTROL_CA_FUNCTION_TERMINATE_PROCESS 8 /* terminate the process before completion */ |
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#define H_CONTROL_CA_FUNCTION_COLLECT_VPD 9 /* collect VPD */ |
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#define H_CONTROL_CA_FUNCTION_GET_FUNCTION_ERR_INT 11 /* read the function-wide error data based on an interrupt */ |
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#define H_CONTROL_CA_FUNCTION_ACK_FUNCTION_ERR_INT 12 /* acknowledge function-wide error data based on an interrupt */ |
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#define H_CONTROL_CA_FUNCTION_GET_ERROR_LOG 13 /* retrieve the Platform Log ID (PLID) of an error log */ |
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#define H_CONTROL_CA_FAULTS_RESPOND_PSL 1 |
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#define H_CONTROL_CA_FAULTS_RESPOND_AFU 2 |
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#define H_CONTROL_CA_FACILITY_RESET 1 /* perform a reset */ |
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#define H_CONTROL_CA_FACILITY_COLLECT_VPD 2 /* collect VPD */ |
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#define H_DOWNLOAD_CA_FACILITY_DOWNLOAD 1 /* download adapter image */ |
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#define H_DOWNLOAD_CA_FACILITY_VALIDATE 2 /* validate adapter image */ |
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#define _CXL_LOOP_HCALL(call, rc, retbuf, fn, ...) \ |
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{ \ |
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unsigned int delay, total_delay = 0; \ |
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u64 token = 0; \ |
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\ |
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memset(retbuf, 0, sizeof(retbuf)); \ |
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while (1) { \ |
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rc = call(fn, retbuf, __VA_ARGS__, token); \ |
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token = retbuf[0]; \ |
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if (rc != H_BUSY && !H_IS_LONG_BUSY(rc)) \ |
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break; \ |
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\ |
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if (rc == H_BUSY) \ |
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delay = 10; \ |
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else \ |
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delay = get_longbusy_msecs(rc); \ |
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\ |
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total_delay += delay; \ |
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if (total_delay > CXL_HCALL_TIMEOUT) { \ |
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WARN(1, "Warning: Giving up waiting for CXL hcall " \ |
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"%#x after %u msec\n", fn, total_delay); \ |
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rc = H_BUSY; \ |
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break; \ |
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} \ |
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msleep(delay); \ |
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} \ |
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} |
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#define CXL_H_WAIT_UNTIL_DONE(...) _CXL_LOOP_HCALL(plpar_hcall, __VA_ARGS__) |
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#define CXL_H9_WAIT_UNTIL_DONE(...) _CXL_LOOP_HCALL(plpar_hcall9, __VA_ARGS__) |
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#define _PRINT_MSG(rc, format, ...) \ |
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{ \ |
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if ((rc != H_SUCCESS) && (rc != H_CONTINUE)) \ |
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pr_err(format, __VA_ARGS__); \ |
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else \ |
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pr_devel(format, __VA_ARGS__); \ |
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} \ |
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static char *afu_op_names[] = { |
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"UNKNOWN_OP", /* 0 undefined */ |
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"RESET", /* 1 */ |
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"SUSPEND_PROCESS", /* 2 */ |
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"RESUME_PROCESS", /* 3 */ |
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"READ_ERR_STATE", /* 4 */ |
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"GET_AFU_ERR", /* 5 */ |
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"GET_CONFIG", /* 6 */ |
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"GET_DOWNLOAD_STATE", /* 7 */ |
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"TERMINATE_PROCESS", /* 8 */ |
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"COLLECT_VPD", /* 9 */ |
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"UNKNOWN_OP", /* 10 undefined */ |
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"GET_FUNCTION_ERR_INT", /* 11 */ |
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"ACK_FUNCTION_ERR_INT", /* 12 */ |
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"GET_ERROR_LOG", /* 13 */ |
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}; |
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static char *control_adapter_op_names[] = { |
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"UNKNOWN_OP", /* 0 undefined */ |
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"RESET", /* 1 */ |
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"COLLECT_VPD", /* 2 */ |
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}; |
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static char *download_op_names[] = { |
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"UNKNOWN_OP", /* 0 undefined */ |
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"DOWNLOAD", /* 1 */ |
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"VALIDATE", /* 2 */ |
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}; |
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static char *op_str(unsigned int op, char *name_array[], int array_len) |
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{ |
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if (op >= array_len) |
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return "UNKNOWN_OP"; |
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return name_array[op]; |
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} |
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#define OP_STR(op, name_array) op_str(op, name_array, ARRAY_SIZE(name_array)) |
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#define OP_STR_AFU(op) OP_STR(op, afu_op_names) |
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#define OP_STR_CONTROL_ADAPTER(op) OP_STR(op, control_adapter_op_names) |
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#define OP_STR_DOWNLOAD_ADAPTER(op) OP_STR(op, download_op_names) |
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long cxl_h_attach_process(u64 unit_address, |
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struct cxl_process_element_hcall *element, |
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u64 *process_token, u64 *mmio_addr, u64 *mmio_size) |
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{ |
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unsigned long retbuf[PLPAR_HCALL_BUFSIZE]; |
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long rc; |
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CXL_H_WAIT_UNTIL_DONE(rc, retbuf, H_ATTACH_CA_PROCESS, unit_address, virt_to_phys(element)); |
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_PRINT_MSG(rc, "cxl_h_attach_process(%#.16llx, %#.16lx): %li\n", |
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unit_address, virt_to_phys(element), rc); |
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trace_cxl_hcall_attach(unit_address, virt_to_phys(element), retbuf[0], retbuf[1], retbuf[2], rc); |
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pr_devel("token: 0x%.8lx mmio_addr: 0x%lx mmio_size: 0x%lx\nProcess Element Structure:\n", |
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retbuf[0], retbuf[1], retbuf[2]); |
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cxl_dump_debug_buffer(element, sizeof(*element)); |
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switch (rc) { |
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case H_SUCCESS: /* The process info is attached to the coherent platform function */ |
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*process_token = retbuf[0]; |
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if (mmio_addr) |
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*mmio_addr = retbuf[1]; |
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if (mmio_size) |
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*mmio_size = retbuf[2]; |
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return 0; |
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case H_PARAMETER: /* An incorrect parameter was supplied. */ |
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case H_FUNCTION: /* The function is not supported. */ |
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return -EINVAL; |
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case H_AUTHORITY: /* The partition does not have authority to perform this hcall */ |
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case H_RESOURCE: /* The coherent platform function does not have enough additional resource to attach the process */ |
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case H_HARDWARE: /* A hardware event prevented the attach operation */ |
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case H_STATE: /* The coherent platform function is not in a valid state */ |
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case H_BUSY: |
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return -EBUSY; |
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default: |
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WARN(1, "Unexpected return code: %lx", rc); |
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return -EINVAL; |
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} |
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} |
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/* |
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* cxl_h_detach_process - Detach a process element from a coherent |
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* platform function. |
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*/ |
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long cxl_h_detach_process(u64 unit_address, u64 process_token) |
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{ |
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unsigned long retbuf[PLPAR_HCALL_BUFSIZE]; |
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long rc; |
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CXL_H_WAIT_UNTIL_DONE(rc, retbuf, H_DETACH_CA_PROCESS, unit_address, process_token); |
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_PRINT_MSG(rc, "cxl_h_detach_process(%#.16llx, 0x%.8llx): %li\n", unit_address, process_token, rc); |
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trace_cxl_hcall_detach(unit_address, process_token, rc); |
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switch (rc) { |
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case H_SUCCESS: /* The process was detached from the coherent platform function */ |
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return 0; |
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case H_PARAMETER: /* An incorrect parameter was supplied. */ |
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return -EINVAL; |
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case H_AUTHORITY: /* The partition does not have authority to perform this hcall */ |
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case H_RESOURCE: /* The function has page table mappings for MMIO */ |
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case H_HARDWARE: /* A hardware event prevented the detach operation */ |
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case H_STATE: /* The coherent platform function is not in a valid state */ |
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case H_BUSY: |
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return -EBUSY; |
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default: |
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WARN(1, "Unexpected return code: %lx", rc); |
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return -EINVAL; |
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} |
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} |
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/* |
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* cxl_h_control_function - This H_CONTROL_CA_FUNCTION hypervisor call allows |
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* the partition to manipulate or query |
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* certain coherent platform function behaviors. |
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*/ |
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static long cxl_h_control_function(u64 unit_address, u64 op, |
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u64 p1, u64 p2, u64 p3, u64 p4, u64 *out) |
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{ |
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unsigned long retbuf[PLPAR_HCALL9_BUFSIZE]; |
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long rc; |
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CXL_H9_WAIT_UNTIL_DONE(rc, retbuf, H_CONTROL_CA_FUNCTION, unit_address, op, p1, p2, p3, p4); |
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_PRINT_MSG(rc, "cxl_h_control_function(%#.16llx, %s(%#llx, %#llx, %#llx, %#llx, R4: %#lx)): %li\n", |
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unit_address, OP_STR_AFU(op), p1, p2, p3, p4, retbuf[0], rc); |
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trace_cxl_hcall_control_function(unit_address, OP_STR_AFU(op), p1, p2, p3, p4, retbuf[0], rc); |
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switch (rc) { |
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case H_SUCCESS: /* The operation is completed for the coherent platform function */ |
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if ((op == H_CONTROL_CA_FUNCTION_GET_FUNCTION_ERR_INT || |
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op == H_CONTROL_CA_FUNCTION_READ_ERR_STATE || |
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op == H_CONTROL_CA_FUNCTION_COLLECT_VPD)) |
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*out = retbuf[0]; |
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return 0; |
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case H_PARAMETER: /* An incorrect parameter was supplied. */ |
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case H_FUNCTION: /* The function is not supported. */ |
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case H_NOT_FOUND: /* The operation supplied was not valid */ |
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case H_NOT_AVAILABLE: /* The operation cannot be performed because the AFU has not been downloaded */ |
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case H_SG_LIST: /* An block list entry was invalid */ |
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return -EINVAL; |
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case H_AUTHORITY: /* The partition does not have authority to perform this hcall */ |
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case H_RESOURCE: /* The function has page table mappings for MMIO */ |
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case H_HARDWARE: /* A hardware event prevented the attach operation */ |
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case H_STATE: /* The coherent platform function is not in a valid state */ |
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case H_BUSY: |
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return -EBUSY; |
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default: |
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WARN(1, "Unexpected return code: %lx", rc); |
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return -EINVAL; |
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} |
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} |
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/* |
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* cxl_h_reset_afu - Perform a reset to the coherent platform function. |
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*/ |
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long cxl_h_reset_afu(u64 unit_address) |
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{ |
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return cxl_h_control_function(unit_address, |
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H_CONTROL_CA_FUNCTION_RESET, |
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0, 0, 0, 0, |
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NULL); |
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} |
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/* |
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* cxl_h_suspend_process - Suspend a process from being executed |
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* Parameter1 = process-token as returned from H_ATTACH_CA_PROCESS when |
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* process was attached. |
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*/ |
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long cxl_h_suspend_process(u64 unit_address, u64 process_token) |
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{ |
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return cxl_h_control_function(unit_address, |
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H_CONTROL_CA_FUNCTION_SUSPEND_PROCESS, |
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process_token, 0, 0, 0, |
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NULL); |
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} |
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/* |
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* cxl_h_resume_process - Resume a process to be executed |
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* Parameter1 = process-token as returned from H_ATTACH_CA_PROCESS when |
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* process was attached. |
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*/ |
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long cxl_h_resume_process(u64 unit_address, u64 process_token) |
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{ |
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return cxl_h_control_function(unit_address, |
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H_CONTROL_CA_FUNCTION_RESUME_PROCESS, |
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process_token, 0, 0, 0, |
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NULL); |
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} |
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/* |
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* cxl_h_read_error_state - Checks the error state of the coherent |
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* platform function. |
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* R4 contains the error state |
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*/ |
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long cxl_h_read_error_state(u64 unit_address, u64 *state) |
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{ |
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return cxl_h_control_function(unit_address, |
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H_CONTROL_CA_FUNCTION_READ_ERR_STATE, |
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0, 0, 0, 0, |
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state); |
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} |
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/* |
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* cxl_h_get_afu_err - collect the AFU error buffer |
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* Parameter1 = byte offset into error buffer to retrieve, valid values |
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* are between 0 and (ibm,error-buffer-size - 1) |
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* Parameter2 = 4K aligned real address of error buffer, to be filled in |
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* Parameter3 = length of error buffer, valid values are 4K or less |
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*/ |
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long cxl_h_get_afu_err(u64 unit_address, u64 offset, |
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u64 buf_address, u64 len) |
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{ |
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return cxl_h_control_function(unit_address, |
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H_CONTROL_CA_FUNCTION_GET_AFU_ERR, |
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offset, buf_address, len, 0, |
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NULL); |
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} |
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/* |
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* cxl_h_get_config - collect configuration record for the |
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* coherent platform function |
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* Parameter1 = # of configuration record to retrieve, valid values are |
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* between 0 and (ibm,#config-records - 1) |
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* Parameter2 = byte offset into configuration record to retrieve, |
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* valid values are between 0 and (ibm,config-record-size - 1) |
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* Parameter3 = 4K aligned real address of configuration record buffer, |
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* to be filled in |
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* Parameter4 = length of configuration buffer, valid values are 4K or less |
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*/ |
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long cxl_h_get_config(u64 unit_address, u64 cr_num, u64 offset, |
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u64 buf_address, u64 len) |
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{ |
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return cxl_h_control_function(unit_address, |
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H_CONTROL_CA_FUNCTION_GET_CONFIG, |
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cr_num, offset, buf_address, len, |
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NULL); |
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} |
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/* |
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* cxl_h_terminate_process - Terminate the process before completion |
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* Parameter1 = process-token as returned from H_ATTACH_CA_PROCESS when |
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* process was attached. |
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*/ |
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long cxl_h_terminate_process(u64 unit_address, u64 process_token) |
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{ |
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return cxl_h_control_function(unit_address, |
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H_CONTROL_CA_FUNCTION_TERMINATE_PROCESS, |
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process_token, 0, 0, 0, |
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NULL); |
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} |
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/* |
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* cxl_h_collect_vpd - Collect VPD for the coherent platform function. |
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* Parameter1 = # of VPD record to retrieve, valid values are between 0 |
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* and (ibm,#config-records - 1). |
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* Parameter2 = 4K naturally aligned real buffer containing block |
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* list entries |
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* Parameter3 = number of block list entries in the block list, valid |
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* values are between 0 and 256 |
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*/ |
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long cxl_h_collect_vpd(u64 unit_address, u64 record, u64 list_address, |
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u64 num, u64 *out) |
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{ |
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return cxl_h_control_function(unit_address, |
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H_CONTROL_CA_FUNCTION_COLLECT_VPD, |
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record, list_address, num, 0, |
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out); |
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} |
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/* |
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* cxl_h_get_fn_error_interrupt - Read the function-wide error data based on an interrupt |
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*/ |
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long cxl_h_get_fn_error_interrupt(u64 unit_address, u64 *reg) |
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{ |
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return cxl_h_control_function(unit_address, |
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H_CONTROL_CA_FUNCTION_GET_FUNCTION_ERR_INT, |
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0, 0, 0, 0, reg); |
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} |
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/* |
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* cxl_h_ack_fn_error_interrupt - Acknowledge function-wide error data |
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* based on an interrupt |
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* Parameter1 = value to write to the function-wide error interrupt register |
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*/ |
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long cxl_h_ack_fn_error_interrupt(u64 unit_address, u64 value) |
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{ |
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return cxl_h_control_function(unit_address, |
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H_CONTROL_CA_FUNCTION_ACK_FUNCTION_ERR_INT, |
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value, 0, 0, 0, |
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NULL); |
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} |
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/* |
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* cxl_h_get_error_log - Retrieve the Platform Log ID (PLID) of |
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* an error log |
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*/ |
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long cxl_h_get_error_log(u64 unit_address, u64 value) |
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{ |
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return cxl_h_control_function(unit_address, |
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H_CONTROL_CA_FUNCTION_GET_ERROR_LOG, |
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0, 0, 0, 0, |
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NULL); |
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} |
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/* |
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* cxl_h_collect_int_info - Collect interrupt info about a coherent |
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* platform function after an interrupt occurred. |
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*/ |
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long cxl_h_collect_int_info(u64 unit_address, u64 process_token, |
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struct cxl_irq_info *info) |
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{ |
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long rc; |
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BUG_ON(sizeof(*info) != sizeof(unsigned long[PLPAR_HCALL9_BUFSIZE])); |
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rc = plpar_hcall9(H_COLLECT_CA_INT_INFO, (unsigned long *) info, |
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unit_address, process_token); |
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_PRINT_MSG(rc, "cxl_h_collect_int_info(%#.16llx, 0x%llx): %li\n", |
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unit_address, process_token, rc); |
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trace_cxl_hcall_collect_int_info(unit_address, process_token, rc); |
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switch (rc) { |
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case H_SUCCESS: /* The interrupt info is returned in return registers. */ |
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pr_devel("dsisr:%#llx, dar:%#llx, dsr:%#llx, pid_tid:%#llx, afu_err:%#llx, errstat:%#llx\n", |
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info->dsisr, info->dar, info->dsr, info->reserved, |
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info->afu_err, info->errstat); |
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return 0; |
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case H_PARAMETER: /* An incorrect parameter was supplied. */ |
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return -EINVAL; |
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case H_AUTHORITY: /* The partition does not have authority to perform this hcall. */ |
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case H_HARDWARE: /* A hardware event prevented the collection of the interrupt info.*/ |
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case H_STATE: /* The coherent platform function is not in a valid state to collect interrupt info. */ |
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return -EBUSY; |
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default: |
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WARN(1, "Unexpected return code: %lx", rc); |
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return -EINVAL; |
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} |
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} |
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/* |
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* cxl_h_control_faults - Control the operation of a coherent platform |
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* function after a fault occurs. |
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* |
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* Parameters |
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* control-mask: value to control the faults |
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* looks like PSL_TFC_An shifted >> 32 |
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* reset-mask: mask to control reset of function faults |
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* Set reset_mask = 1 to reset PSL errors |
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*/ |
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long cxl_h_control_faults(u64 unit_address, u64 process_token, |
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u64 control_mask, u64 reset_mask) |
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{ |
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unsigned long retbuf[PLPAR_HCALL_BUFSIZE]; |
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long rc; |
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memset(retbuf, 0, sizeof(retbuf)); |
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rc = plpar_hcall(H_CONTROL_CA_FAULTS, retbuf, unit_address, |
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H_CONTROL_CA_FAULTS_RESPOND_PSL, process_token, |
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control_mask, reset_mask); |
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_PRINT_MSG(rc, "cxl_h_control_faults(%#.16llx, 0x%llx, %#llx, %#llx): %li (%#lx)\n", |
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unit_address, process_token, control_mask, reset_mask, |
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rc, retbuf[0]); |
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trace_cxl_hcall_control_faults(unit_address, process_token, |
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control_mask, reset_mask, retbuf[0], rc); |
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switch (rc) { |
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case H_SUCCESS: /* Faults were successfully controlled for the function. */ |
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return 0; |
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case H_PARAMETER: /* An incorrect parameter was supplied. */ |
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return -EINVAL; |
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case H_HARDWARE: /* A hardware event prevented the control of faults. */ |
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case H_STATE: /* The function was in an invalid state. */ |
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case H_AUTHORITY: /* The partition does not have authority to perform this hcall; the coherent platform facilities may need to be licensed. */ |
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return -EBUSY; |
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case H_FUNCTION: /* The function is not supported */ |
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case H_NOT_FOUND: /* The operation supplied was not valid */ |
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return -EINVAL; |
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default: |
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WARN(1, "Unexpected return code: %lx", rc); |
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return -EINVAL; |
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} |
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} |
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/* |
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* cxl_h_control_facility - This H_CONTROL_CA_FACILITY hypervisor call |
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* allows the partition to manipulate or query |
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* certain coherent platform facility behaviors. |
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*/ |
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static long cxl_h_control_facility(u64 unit_address, u64 op, |
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u64 p1, u64 p2, u64 p3, u64 p4, u64 *out) |
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{ |
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unsigned long retbuf[PLPAR_HCALL9_BUFSIZE]; |
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long rc; |
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CXL_H9_WAIT_UNTIL_DONE(rc, retbuf, H_CONTROL_CA_FACILITY, unit_address, op, p1, p2, p3, p4); |
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_PRINT_MSG(rc, "cxl_h_control_facility(%#.16llx, %s(%#llx, %#llx, %#llx, %#llx, R4: %#lx)): %li\n", |
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unit_address, OP_STR_CONTROL_ADAPTER(op), p1, p2, p3, p4, retbuf[0], rc); |
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trace_cxl_hcall_control_facility(unit_address, OP_STR_CONTROL_ADAPTER(op), p1, p2, p3, p4, retbuf[0], rc); |
|
|
|
switch (rc) { |
|
case H_SUCCESS: /* The operation is completed for the coherent platform facility */ |
|
if (op == H_CONTROL_CA_FACILITY_COLLECT_VPD) |
|
*out = retbuf[0]; |
|
return 0; |
|
case H_PARAMETER: /* An incorrect parameter was supplied. */ |
|
case H_FUNCTION: /* The function is not supported. */ |
|
case H_NOT_FOUND: /* The operation supplied was not valid */ |
|
case H_NOT_AVAILABLE: /* The operation cannot be performed because the AFU has not been downloaded */ |
|
case H_SG_LIST: /* An block list entry was invalid */ |
|
return -EINVAL; |
|
case H_AUTHORITY: /* The partition does not have authority to perform this hcall */ |
|
case H_RESOURCE: /* The function has page table mappings for MMIO */ |
|
case H_HARDWARE: /* A hardware event prevented the attach operation */ |
|
case H_STATE: /* The coherent platform facility is not in a valid state */ |
|
case H_BUSY: |
|
return -EBUSY; |
|
default: |
|
WARN(1, "Unexpected return code: %lx", rc); |
|
return -EINVAL; |
|
} |
|
} |
|
|
|
/* |
|
* cxl_h_reset_adapter - Perform a reset to the coherent platform facility. |
|
*/ |
|
long cxl_h_reset_adapter(u64 unit_address) |
|
{ |
|
return cxl_h_control_facility(unit_address, |
|
H_CONTROL_CA_FACILITY_RESET, |
|
0, 0, 0, 0, |
|
NULL); |
|
} |
|
|
|
/* |
|
* cxl_h_collect_vpd - Collect VPD for the coherent platform function. |
|
* Parameter1 = 4K naturally aligned real buffer containing block |
|
* list entries |
|
* Parameter2 = number of block list entries in the block list, valid |
|
* values are between 0 and 256 |
|
*/ |
|
long cxl_h_collect_vpd_adapter(u64 unit_address, u64 list_address, |
|
u64 num, u64 *out) |
|
{ |
|
return cxl_h_control_facility(unit_address, |
|
H_CONTROL_CA_FACILITY_COLLECT_VPD, |
|
list_address, num, 0, 0, |
|
out); |
|
} |
|
|
|
/* |
|
* cxl_h_download_facility - This H_DOWNLOAD_CA_FACILITY |
|
* hypervisor call provide platform support for |
|
* downloading a base adapter image to the coherent |
|
* platform facility, and for validating the entire |
|
* image after the download. |
|
* Parameters |
|
* op: operation to perform to the coherent platform function |
|
* Download: operation = 1, the base image in the coherent platform |
|
* facility is first erased, and then |
|
* programmed using the image supplied |
|
* in the scatter/gather list. |
|
* Validate: operation = 2, the base image in the coherent platform |
|
* facility is compared with the image |
|
* supplied in the scatter/gather list. |
|
* list_address: 4K naturally aligned real buffer containing |
|
* scatter/gather list entries. |
|
* num: number of block list entries in the scatter/gather list. |
|
*/ |
|
static long cxl_h_download_facility(u64 unit_address, u64 op, |
|
u64 list_address, u64 num, |
|
u64 *out) |
|
{ |
|
unsigned long retbuf[PLPAR_HCALL_BUFSIZE]; |
|
unsigned int delay, total_delay = 0; |
|
u64 token = 0; |
|
long rc; |
|
|
|
if (*out != 0) |
|
token = *out; |
|
|
|
memset(retbuf, 0, sizeof(retbuf)); |
|
while (1) { |
|
rc = plpar_hcall(H_DOWNLOAD_CA_FACILITY, retbuf, |
|
unit_address, op, list_address, num, |
|
token); |
|
token = retbuf[0]; |
|
if (rc != H_BUSY && !H_IS_LONG_BUSY(rc)) |
|
break; |
|
|
|
if (rc != H_BUSY) { |
|
delay = get_longbusy_msecs(rc); |
|
total_delay += delay; |
|
if (total_delay > CXL_HCALL_TIMEOUT_DOWNLOAD) { |
|
WARN(1, "Warning: Giving up waiting for CXL hcall " |
|
"%#x after %u msec\n", |
|
H_DOWNLOAD_CA_FACILITY, total_delay); |
|
rc = H_BUSY; |
|
break; |
|
} |
|
msleep(delay); |
|
} |
|
} |
|
_PRINT_MSG(rc, "cxl_h_download_facility(%#.16llx, %s(%#llx, %#llx), %#lx): %li\n", |
|
unit_address, OP_STR_DOWNLOAD_ADAPTER(op), list_address, num, retbuf[0], rc); |
|
trace_cxl_hcall_download_facility(unit_address, OP_STR_DOWNLOAD_ADAPTER(op), list_address, num, retbuf[0], rc); |
|
|
|
switch (rc) { |
|
case H_SUCCESS: /* The operation is completed for the coherent platform facility */ |
|
return 0; |
|
case H_PARAMETER: /* An incorrect parameter was supplied */ |
|
case H_FUNCTION: /* The function is not supported. */ |
|
case H_SG_LIST: /* An block list entry was invalid */ |
|
case H_BAD_DATA: /* Image verification failed */ |
|
return -EINVAL; |
|
case H_AUTHORITY: /* The partition does not have authority to perform this hcall */ |
|
case H_RESOURCE: /* The function has page table mappings for MMIO */ |
|
case H_HARDWARE: /* A hardware event prevented the attach operation */ |
|
case H_STATE: /* The coherent platform facility is not in a valid state */ |
|
case H_BUSY: |
|
return -EBUSY; |
|
case H_CONTINUE: |
|
*out = retbuf[0]; |
|
return 1; /* More data is needed for the complete image */ |
|
default: |
|
WARN(1, "Unexpected return code: %lx", rc); |
|
return -EINVAL; |
|
} |
|
} |
|
|
|
/* |
|
* cxl_h_download_adapter_image - Download the base image to the coherent |
|
* platform facility. |
|
*/ |
|
long cxl_h_download_adapter_image(u64 unit_address, |
|
u64 list_address, u64 num, |
|
u64 *out) |
|
{ |
|
return cxl_h_download_facility(unit_address, |
|
H_DOWNLOAD_CA_FACILITY_DOWNLOAD, |
|
list_address, num, out); |
|
} |
|
|
|
/* |
|
* cxl_h_validate_adapter_image - Validate the base image in the coherent |
|
* platform facility. |
|
*/ |
|
long cxl_h_validate_adapter_image(u64 unit_address, |
|
u64 list_address, u64 num, |
|
u64 *out) |
|
{ |
|
return cxl_h_download_facility(unit_address, |
|
H_DOWNLOAD_CA_FACILITY_VALIDATE, |
|
list_address, num, out); |
|
}
|
|
|