From 1cafc629408d1883a00c9f656e3de5a677460a88 Mon Sep 17 00:00:00 2001 From: Vaibhav Jain Date: Wed, 20 Sep 2017 11:53:22 +0530 Subject: cxl: Provide debugfs access to PSL_DEBUG/XSL_DEBUG registers Access to PSL/XSL_DEBUG registers on the adapter provides easy access to the debug facilities provided by PSL/XSL. So this patch adds two new files (debug, xsl-debug) to the cxl-adapter specific debugfs folder located at /sys/kernel/debugfs/cxl/card, which will provide direct r/w access to corrosponding debug registers in the adapter config-space. Signed-off-by: Vaibhav Jain Acked-by: Andrew Donnellan Acked-by: Frederic Barrat Signed-off-by: Michael Ellerman --- drivers/misc/cxl/cxl.h | 1 + drivers/misc/cxl/debugfs.c | 4 ++++ 2 files changed, 5 insertions(+) (limited to 'drivers/misc') diff --git a/drivers/misc/cxl/cxl.h b/drivers/misc/cxl/cxl.h index 111c689b1771..fc98f6ad1616 100644 --- a/drivers/misc/cxl/cxl.h +++ b/drivers/misc/cxl/cxl.h @@ -101,6 +101,7 @@ static const cxl_p1_reg_t CXL_XSL_DSNCTL = {0x0168}; /* PSL registers - CAIA 2 */ static const cxl_p1_reg_t CXL_PSL9_CONTROL = {0x0020}; static const cxl_p1_reg_t CXL_XSL9_INV = {0x0110}; +static const cxl_p1_reg_t CXL_XSL9_DBG = {0x0130}; static const cxl_p1_reg_t CXL_XSL9_DEF = {0x0140}; static const cxl_p1_reg_t CXL_XSL9_DSNCTL = {0x0168}; static const cxl_p1_reg_t CXL_PSL9_FIR1 = {0x0300}; diff --git a/drivers/misc/cxl/debugfs.c b/drivers/misc/cxl/debugfs.c index 52e3d97db114..dbb9b58077f6 100644 --- a/drivers/misc/cxl/debugfs.c +++ b/drivers/misc/cxl/debugfs.c @@ -66,6 +66,10 @@ void cxl_debugfs_add_adapter_regs_psl9(struct cxl *adapter, struct dentry *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) -- cgit v1.2.3