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- // SPDX-License-Identifier: GPL-2.0-or-later
- /*
- * Copyright 2014 IBM Corp.
- */
- #include <linux/debugfs.h>
- #include <linux/kernel.h>
- #include <linux/slab.h>
- #include "cxl.h"
- static struct dentry *cxl_debugfs;
- /* Helpers to export CXL mmaped IO registers via debugfs */
- static int debugfs_io_u64_get(void *data, u64 *val)
- {
- *val = in_be64((u64 __iomem *)data);
- return 0;
- }
- static int debugfs_io_u64_set(void *data, u64 val)
- {
- out_be64((u64 __iomem *)data, val);
- return 0;
- }
- DEFINE_DEBUGFS_ATTRIBUTE(fops_io_x64, debugfs_io_u64_get, debugfs_io_u64_set,
- "0x%016llx\n");
- static void debugfs_create_io_x64(const char *name, umode_t mode,
- struct dentry *parent, u64 __iomem *value)
- {
- debugfs_create_file_unsafe(name, mode, parent, (void __force *)value,
- &fops_io_x64);
- }
- void cxl_debugfs_add_adapter_regs_psl9(struct cxl *adapter, struct dentry *dir)
- {
- debugfs_create_io_x64("fir1", S_IRUSR, dir, _cxl_p1_addr(adapter, CXL_PSL9_FIR1));
- debugfs_create_io_x64("fir_mask", 0400, dir,
- _cxl_p1_addr(adapter, CXL_PSL9_FIR_MASK));
- debugfs_create_io_x64("fir_cntl", S_IRUSR, dir, _cxl_p1_addr(adapter, CXL_PSL9_FIR_CNTL));
- debugfs_create_io_x64("trace", S_IRUSR | S_IWUSR, dir, _cxl_p1_addr(adapter, CXL_PSL9_TRACECFG));
- debugfs_create_io_x64("debug", 0600, dir,
- _cxl_p1_addr(adapter, CXL_PSL9_DEBUG));
- debugfs_create_io_x64("xsl-debug", 0600, dir,
- _cxl_p1_addr(adapter, CXL_XSL9_DBG));
- }
- void cxl_debugfs_add_adapter_regs_psl8(struct cxl *adapter, struct dentry *dir)
- {
- debugfs_create_io_x64("fir1", S_IRUSR, dir, _cxl_p1_addr(adapter, CXL_PSL_FIR1));
- debugfs_create_io_x64("fir2", S_IRUSR, dir, _cxl_p1_addr(adapter, CXL_PSL_FIR2));
- debugfs_create_io_x64("fir_cntl", S_IRUSR, dir, _cxl_p1_addr(adapter, CXL_PSL_FIR_CNTL));
- debugfs_create_io_x64("trace", S_IRUSR | S_IWUSR, dir, _cxl_p1_addr(adapter, CXL_PSL_TRACE));
- }
- void cxl_debugfs_adapter_add(struct cxl *adapter)
- {
- struct dentry *dir;
- char buf[32];
- if (!cxl_debugfs)
- return;
- snprintf(buf, 32, "card%i", adapter->adapter_num);
- dir = debugfs_create_dir(buf, cxl_debugfs);
- adapter->debugfs = dir;
- debugfs_create_io_x64("err_ivte", S_IRUSR, dir, _cxl_p1_addr(adapter, CXL_PSL_ErrIVTE));
- if (adapter->native->sl_ops->debugfs_add_adapter_regs)
- adapter->native->sl_ops->debugfs_add_adapter_regs(adapter, dir);
- }
- void cxl_debugfs_adapter_remove(struct cxl *adapter)
- {
- debugfs_remove_recursive(adapter->debugfs);
- }
- void cxl_debugfs_add_afu_regs_psl9(struct cxl_afu *afu, struct dentry *dir)
- {
- debugfs_create_io_x64("serr", S_IRUSR, dir, _cxl_p1n_addr(afu, CXL_PSL_SERR_An));
- }
- void cxl_debugfs_add_afu_regs_psl8(struct cxl_afu *afu, struct dentry *dir)
- {
- debugfs_create_io_x64("sstp0", S_IRUSR, dir, _cxl_p2n_addr(afu, CXL_SSTP0_An));
- debugfs_create_io_x64("sstp1", S_IRUSR, dir, _cxl_p2n_addr(afu, CXL_SSTP1_An));
- debugfs_create_io_x64("fir", S_IRUSR, dir, _cxl_p1n_addr(afu, CXL_PSL_FIR_SLICE_An));
- debugfs_create_io_x64("serr", S_IRUSR, dir, _cxl_p1n_addr(afu, CXL_PSL_SERR_An));
- debugfs_create_io_x64("afu_debug", S_IRUSR, dir, _cxl_p1n_addr(afu, CXL_AFU_DEBUG_An));
- debugfs_create_io_x64("trace", S_IRUSR | S_IWUSR, dir, _cxl_p1n_addr(afu, CXL_PSL_SLICE_TRACE));
- }
- void cxl_debugfs_afu_add(struct cxl_afu *afu)
- {
- struct dentry *dir;
- char buf[32];
- if (!afu->adapter->debugfs)
- return;
- snprintf(buf, 32, "psl%i.%i", afu->adapter->adapter_num, afu->slice);
- dir = debugfs_create_dir(buf, afu->adapter->debugfs);
- afu->debugfs = dir;
- debugfs_create_io_x64("sr", S_IRUSR, dir, _cxl_p1n_addr(afu, CXL_PSL_SR_An));
- debugfs_create_io_x64("dsisr", S_IRUSR, dir, _cxl_p2n_addr(afu, CXL_PSL_DSISR_An));
- debugfs_create_io_x64("dar", S_IRUSR, dir, _cxl_p2n_addr(afu, CXL_PSL_DAR_An));
- debugfs_create_io_x64("err_status", S_IRUSR, dir, _cxl_p2n_addr(afu, CXL_PSL_ErrStat_An));
- if (afu->adapter->native->sl_ops->debugfs_add_afu_regs)
- afu->adapter->native->sl_ops->debugfs_add_afu_regs(afu, dir);
- }
- void cxl_debugfs_afu_remove(struct cxl_afu *afu)
- {
- debugfs_remove_recursive(afu->debugfs);
- }
- void __init cxl_debugfs_init(void)
- {
- if (!cpu_has_feature(CPU_FTR_HVMODE))
- return;
- cxl_debugfs = debugfs_create_dir("cxl", NULL);
- }
- void cxl_debugfs_exit(void)
- {
- debugfs_remove_recursive(cxl_debugfs);
- }
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