^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-or-later
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * Copyright 2014 IBM Corp.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) #include <linux/debugfs.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include "cxl.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) static struct dentry *cxl_debugfs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) /* Helpers to export CXL mmaped IO registers via debugfs */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) static int debugfs_io_u64_get(void *data, u64 *val)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) *val = in_be64((u64 __iomem *)data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) static int debugfs_io_u64_set(void *data, u64 val)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) out_be64((u64 __iomem *)data, val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) DEFINE_DEBUGFS_ATTRIBUTE(fops_io_x64, debugfs_io_u64_get, debugfs_io_u64_set,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) "0x%016llx\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) static void debugfs_create_io_x64(const char *name, umode_t mode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) struct dentry *parent, u64 __iomem *value)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) debugfs_create_file_unsafe(name, mode, parent, (void __force *)value,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) &fops_io_x64);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) void cxl_debugfs_add_adapter_regs_psl9(struct cxl *adapter, struct dentry *dir)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) debugfs_create_io_x64("fir1", S_IRUSR, dir, _cxl_p1_addr(adapter, CXL_PSL9_FIR1));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) debugfs_create_io_x64("fir_mask", 0400, dir,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) _cxl_p1_addr(adapter, CXL_PSL9_FIR_MASK));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) debugfs_create_io_x64("fir_cntl", S_IRUSR, dir, _cxl_p1_addr(adapter, CXL_PSL9_FIR_CNTL));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) debugfs_create_io_x64("trace", S_IRUSR | S_IWUSR, dir, _cxl_p1_addr(adapter, CXL_PSL9_TRACECFG));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) debugfs_create_io_x64("debug", 0600, dir,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) _cxl_p1_addr(adapter, CXL_PSL9_DEBUG));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) debugfs_create_io_x64("xsl-debug", 0600, dir,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) _cxl_p1_addr(adapter, CXL_XSL9_DBG));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) void cxl_debugfs_add_adapter_regs_psl8(struct cxl *adapter, struct dentry *dir)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) debugfs_create_io_x64("fir1", S_IRUSR, dir, _cxl_p1_addr(adapter, CXL_PSL_FIR1));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) debugfs_create_io_x64("fir2", S_IRUSR, dir, _cxl_p1_addr(adapter, CXL_PSL_FIR2));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) debugfs_create_io_x64("fir_cntl", S_IRUSR, dir, _cxl_p1_addr(adapter, CXL_PSL_FIR_CNTL));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) debugfs_create_io_x64("trace", S_IRUSR | S_IWUSR, dir, _cxl_p1_addr(adapter, CXL_PSL_TRACE));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) void cxl_debugfs_adapter_add(struct cxl *adapter)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) struct dentry *dir;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) char buf[32];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) if (!cxl_debugfs)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) snprintf(buf, 32, "card%i", adapter->adapter_num);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) dir = debugfs_create_dir(buf, cxl_debugfs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) adapter->debugfs = dir;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) debugfs_create_io_x64("err_ivte", S_IRUSR, dir, _cxl_p1_addr(adapter, CXL_PSL_ErrIVTE));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) if (adapter->native->sl_ops->debugfs_add_adapter_regs)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) adapter->native->sl_ops->debugfs_add_adapter_regs(adapter, dir);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) void cxl_debugfs_adapter_remove(struct cxl *adapter)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) debugfs_remove_recursive(adapter->debugfs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) void cxl_debugfs_add_afu_regs_psl9(struct cxl_afu *afu, struct dentry *dir)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) debugfs_create_io_x64("serr", S_IRUSR, dir, _cxl_p1n_addr(afu, CXL_PSL_SERR_An));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) void cxl_debugfs_add_afu_regs_psl8(struct cxl_afu *afu, struct dentry *dir)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) debugfs_create_io_x64("sstp0", S_IRUSR, dir, _cxl_p2n_addr(afu, CXL_SSTP0_An));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) debugfs_create_io_x64("sstp1", S_IRUSR, dir, _cxl_p2n_addr(afu, CXL_SSTP1_An));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) debugfs_create_io_x64("fir", S_IRUSR, dir, _cxl_p1n_addr(afu, CXL_PSL_FIR_SLICE_An));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) debugfs_create_io_x64("serr", S_IRUSR, dir, _cxl_p1n_addr(afu, CXL_PSL_SERR_An));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) debugfs_create_io_x64("afu_debug", S_IRUSR, dir, _cxl_p1n_addr(afu, CXL_AFU_DEBUG_An));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) debugfs_create_io_x64("trace", S_IRUSR | S_IWUSR, dir, _cxl_p1n_addr(afu, CXL_PSL_SLICE_TRACE));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) void cxl_debugfs_afu_add(struct cxl_afu *afu)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) struct dentry *dir;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) char buf[32];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) if (!afu->adapter->debugfs)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) snprintf(buf, 32, "psl%i.%i", afu->adapter->adapter_num, afu->slice);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) dir = debugfs_create_dir(buf, afu->adapter->debugfs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) afu->debugfs = dir;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) debugfs_create_io_x64("sr", S_IRUSR, dir, _cxl_p1n_addr(afu, CXL_PSL_SR_An));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) debugfs_create_io_x64("dsisr", S_IRUSR, dir, _cxl_p2n_addr(afu, CXL_PSL_DSISR_An));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) debugfs_create_io_x64("dar", S_IRUSR, dir, _cxl_p2n_addr(afu, CXL_PSL_DAR_An));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) debugfs_create_io_x64("err_status", S_IRUSR, dir, _cxl_p2n_addr(afu, CXL_PSL_ErrStat_An));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) if (afu->adapter->native->sl_ops->debugfs_add_afu_regs)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) afu->adapter->native->sl_ops->debugfs_add_afu_regs(afu, dir);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) void cxl_debugfs_afu_remove(struct cxl_afu *afu)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) debugfs_remove_recursive(afu->debugfs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) void __init cxl_debugfs_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) if (!cpu_has_feature(CPU_FTR_HVMODE))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) cxl_debugfs = debugfs_create_dir("cxl", NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) void cxl_debugfs_exit(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) debugfs_remove_recursive(cxl_debugfs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) }
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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