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tegra: hwpm: return error from read/write function

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Currently, read/write functions validate aperture and mmio address
pointers. However, the error cannot be returned to the parent resulting
into undetected errors.
Modify all read write functions to return error on failure. This will
also allow HWPM driver to know about unavailable IP perfmuxes.

Jira THWPM-41

Change-Id: I6cc4ba7a831d5058657d4f2536b1ce3ab20b30c6
Signed-off-by: Vedashree Vidwans <vvidwans@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvidia/+/2707446
Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com>
Reviewed-by: svc-mobile-cert <svc-mobile-cert@nvidia.com>
Reviewed-by: svc_kernel_abi <svc_kernel_abi@nvidia.com>
Reviewed-by: Vasuki Shankar <vasukis@nvidia.com>
Reviewed-by: Seema Khowala <seemaj@nvidia.com>
GVS: Gerrit_Virtual_Submit
This commit is contained in:
Vedashree Vidwans
2022-05-04 16:28:56 -07:00
committed by mobile promotions
parent 8e27814e39
commit c220f9f46f
8 changed files with 417 additions and 172 deletions
Download Patch File Download Diff File Expand all files Collapse all files

18
include/tegra_hwpm_io.h
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@@ -54,15 +54,15 @@ struct tegra_soc_hwpm;
struct hwpm_ip_inst;
struct hwpm_ip_aperture;
u32 tegra_hwpm_readl(struct tegra_soc_hwpm *hwpm,
struct hwpm_ip_aperture *aperture, u64 addr);
void tegra_hwpm_writel(struct tegra_soc_hwpm *hwpm,
int tegra_hwpm_readl(struct tegra_soc_hwpm *hwpm,
struct hwpm_ip_aperture *aperture, u64 addr, u32 *val);
int tegra_hwpm_writel(struct tegra_soc_hwpm *hwpm,
struct hwpm_ip_aperture *aperture, u64 addr, u32 val);
u32 tegra_hwpm_regops_readl(struct tegra_soc_hwpm *hwpm,
u64 addr, struct hwpm_ip_inst *ip_inst,
struct hwpm_ip_aperture *aperture);
void tegra_hwpm_regops_writel(struct tegra_soc_hwpm *hwpm,
u64 addr, u32 val, struct hwpm_ip_inst *ip_inst,
struct hwpm_ip_aperture *aperture);
int tegra_hwpm_regops_readl(struct tegra_soc_hwpm *hwpm,
struct hwpm_ip_inst *ip_inst, struct hwpm_ip_aperture *aperture,
u64 addr, u32 *val);
int tegra_hwpm_regops_writel(struct tegra_soc_hwpm *hwpm,
struct hwpm_ip_inst *ip_inst, struct hwpm_ip_aperture *aperture,
u64 addr, u32 val);
#endif /* TEGRA_HWPM_IO_H */