mirror of
https://github.com/torvalds/linux.git
synced 2024-12-14 07:02:23 +00:00
ea2d1f95ef
A few functions are mostly common between bare-metal and guest and just need minor tuning. To avoid crowding the backend API, introduce a few 'if' based on the CPU being in HV mode. Co-authored-by: Christophe Lombard <clombard@linux.vnet.ibm.com> Signed-off-by: Frederic Barrat <fbarrat@linux.vnet.ibm.com> Signed-off-by: Christophe Lombard <clombard@linux.vnet.ibm.com> Reviewed-by: Manoj Kumar <manoj@linux.vnet.ibm.com> Acked-by: Ian Munsie <imunsie@au1.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
137 lines
3.8 KiB
C
137 lines
3.8 KiB
C
/*
|
|
* Copyright 2014 IBM Corp.
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License
|
|
* as published by the Free Software Foundation; either version
|
|
* 2 of the License, or (at your option) any later version.
|
|
*/
|
|
|
|
#include <linux/debugfs.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/slab.h>
|
|
|
|
#include "cxl.h"
|
|
|
|
static struct dentry *cxl_debugfs;
|
|
|
|
void cxl_stop_trace(struct cxl *adapter)
|
|
{
|
|
int slice;
|
|
|
|
/* Stop the trace */
|
|
cxl_p1_write(adapter, CXL_PSL_TRACE, 0x8000000000000017LL);
|
|
|
|
/* Stop the slice traces */
|
|
spin_lock(&adapter->afu_list_lock);
|
|
for (slice = 0; slice < adapter->slices; slice++) {
|
|
if (adapter->afu[slice])
|
|
cxl_p1n_write(adapter->afu[slice], CXL_PSL_SLICE_TRACE, 0x8000000000000000LL);
|
|
}
|
|
spin_unlock(&adapter->afu_list_lock);
|
|
}
|
|
|
|
/* 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_SIMPLE_ATTRIBUTE(fops_io_x64, debugfs_io_u64_get, debugfs_io_u64_set, "0x%016llx\n");
|
|
|
|
static struct dentry *debugfs_create_io_x64(const char *name, umode_t mode,
|
|
struct dentry *parent, u64 __iomem *value)
|
|
{
|
|
return debugfs_create_file(name, mode, parent, (void __force *)value, &fops_io_x64);
|
|
}
|
|
|
|
int cxl_debugfs_adapter_add(struct cxl *adapter)
|
|
{
|
|
struct dentry *dir;
|
|
char buf[32];
|
|
|
|
if (!cxl_debugfs)
|
|
return -ENODEV;
|
|
|
|
snprintf(buf, 32, "card%i", adapter->adapter_num);
|
|
dir = debugfs_create_dir(buf, cxl_debugfs);
|
|
if (IS_ERR(dir))
|
|
return PTR_ERR(dir);
|
|
adapter->debugfs = 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("err_ivte", S_IRUSR, dir, _cxl_p1_addr(adapter, CXL_PSL_ErrIVTE));
|
|
|
|
debugfs_create_io_x64("trace", S_IRUSR | S_IWUSR, dir, _cxl_p1_addr(adapter, CXL_PSL_TRACE));
|
|
|
|
return 0;
|
|
}
|
|
|
|
void cxl_debugfs_adapter_remove(struct cxl *adapter)
|
|
{
|
|
debugfs_remove_recursive(adapter->debugfs);
|
|
}
|
|
|
|
int cxl_debugfs_afu_add(struct cxl_afu *afu)
|
|
{
|
|
struct dentry *dir;
|
|
char buf[32];
|
|
|
|
if (!afu->adapter->debugfs)
|
|
return -ENODEV;
|
|
|
|
snprintf(buf, 32, "psl%i.%i", afu->adapter->adapter_num, afu->slice);
|
|
dir = debugfs_create_dir(buf, afu->adapter->debugfs);
|
|
if (IS_ERR(dir))
|
|
return PTR_ERR(dir);
|
|
afu->debugfs = dir;
|
|
|
|
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("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("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("err_status", S_IRUSR, dir, _cxl_p2n_addr(afu, CXL_PSL_ErrStat_An));
|
|
|
|
debugfs_create_io_x64("trace", S_IRUSR | S_IWUSR, dir, _cxl_p1n_addr(afu, CXL_PSL_SLICE_TRACE));
|
|
|
|
return 0;
|
|
}
|
|
|
|
void cxl_debugfs_afu_remove(struct cxl_afu *afu)
|
|
{
|
|
debugfs_remove_recursive(afu->debugfs);
|
|
}
|
|
|
|
int __init cxl_debugfs_init(void)
|
|
{
|
|
struct dentry *ent;
|
|
|
|
if (!cpu_has_feature(CPU_FTR_HVMODE))
|
|
return 0;
|
|
|
|
ent = debugfs_create_dir("cxl", NULL);
|
|
if (IS_ERR(ent))
|
|
return PTR_ERR(ent);
|
|
cxl_debugfs = ent;
|
|
|
|
return 0;
|
|
}
|
|
|
|
void cxl_debugfs_exit(void)
|
|
{
|
|
debugfs_remove_recursive(cxl_debugfs);
|
|
}
|