Files
linux-hwpm/drivers/tegra/hwpm/include/tegra_hwpm_io.h
Vedashree Vidwans 4ecc672c3e tegra: hwpm: clean up code and add bug fixes
- Create tegra_hwpm_element_enable() instead of directly using
perfmon_enable() HAL. This will allow us to expand
tegra_hwpm_element_enable in future.
- Update log messages in ip structure init code and floorsweep info
function.
- It is possible that IP instances and elements to have 0 start range
address. So, modify check for available elements to use range end
instead.
- Use tegra_hwpm_fake_readl() and tegra_hwpm_fake_writel() macros
instead of fake_readl() and fake_write() functions. That way we have
similar implementation of IO functions and macros can be used across
OSes.
- Check that reserve perfmon function is invoked only for HWPM
components. This check will be useful for expansion in types of
components in the future.
- Clean up and rearrange tegra_hwpm_regops_readl_impl() and
tegra_hwpm_regops_writel_impl() to have designated code corresponding to
the element type.
- Currently, device open and release functions are incorrectly using
clock enable/disable functions instead of using HALs. Correct open and
close functions to use lock HALs.
- Currently, tegra_hwpm_update_mem_bytes() doesn't validate mem_mgmt
structure allocation before accessing mem_bytes_kernel pointer. This can
lead to kernel crash. Update tegra_hwpm_update_mem_bytes() to return
error if mem_mgmt structure s not allocated.

Jira THWPM-74

Change-Id: Ia40bd51187e5ea08572dbee81e577dacf5fb66b6
Signed-off-by: Vedashree Vidwans <vvidwans@nvidia.com>
(cherry picked from commit 411f07484d68dfde0d350a5c67f2748e876b11b8)
Reviewed-on: https://git-master.nvidia.com/r/c/linux-hwpm/+/2888553
Reviewed-by: Adeel Raza <araza@nvidia.com>
GVS: Gerrit_Virtual_Submit <buildbot_gerritrpt@nvidia.com>
2023-05-04 03:12:54 -07:00

90 lines
3.1 KiB
C

/* SPDX-License-Identifier: MIT */
/*
* Copyright (c) 2021-2023 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
#ifndef TEGRA_HWPM_IO_H
#define TEGRA_HWPM_IO_H
/**
* Sets a particular field value in input data.
*
* Uses mask to clear specific bit positions in curr_val. field_val
* is used to set the bits in curr_val to be returned.
* Note: Function does not perform any validation of input parameters.
*
* curr_val [in] Current input data value.
*
* mask [in] Mask of the bits to be updated.
*
* field_val [in] Value to change the mask bits to.
*
* Returns updated value.
*/
static inline u32 set_field(u32 curr_val, u32 mask, u32 field_val)
{
return ((curr_val & ~mask) | field_val);
}
/**
* Retrieve value of specific bits from input data.
* Note: Function does not perform any validation of input parameters.
*
* input_data [in] Data to retrieve value from.
*
* mask [in] Mask of the bits to get value from.
*
* Return value from input_data corresponding to mask bits.
*/
static inline u32 get_field(u32 input_data, u32 mask)
{
return (input_data & mask);
}
#ifdef __KERNEL__
#include <os/linux/io_utils.h>
#else
#include <os/qnx/io_utils.h>
#endif
#define tegra_hwpm_read_sticky_bits(hwpm, reg_base, reg_offset, val) \
tegra_hwpm_read_sticky_bits_impl(hwpm, reg_base, reg_offset, val)
#define tegra_hwpm_fake_readl(hwpm, aperture, addr, val) \
tegra_hwpm_fake_readl_impl(hwpm, aperture, addr, val)
#define tegra_hwpm_fake_writel(hwpm, aperture, addr, val) \
tegra_hwpm_fake_writel_impl(hwpm, aperture, addr, val)
#define tegra_hwpm_readl(hwpm, aperture, addr, val) \
tegra_hwpm_readl_impl(hwpm, aperture, addr, val)
#define tegra_hwpm_writel(hwpm, aperture, addr, val) \
tegra_hwpm_writel_impl(hwpm, aperture, addr, val)
#define tegra_hwpm_regops_readl(hwpm, ip_inst, aperture, addr, val) \
tegra_hwpm_regops_readl_impl(hwpm, ip_inst, aperture, addr, val)
#define tegra_hwpm_regops_writel(hwpm, ip_inst, aperture, addr, val) \
tegra_hwpm_regops_writel_impl(hwpm, ip_inst, aperture, addr, val)
#endif /* TEGRA_HWPM_IO_H */