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lib: sbi: Implement firmware counters

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RISC-V SBI v0.3 specification defines a set of firmware events that can
provide additional information about the current firmware context. All
of the firmware event monitoring are enabled now. The firmware
events must be defined as raw perf event with MSB set as specified in the
specification.

Reviewed-by: Anup Patel <anup.patel@wdc.com>
Signed-off-by: Atish Patra <atish.patra@wdc.com>
This commit is contained in:
Atish Patra
2021-07-10 09:18:14 -07:00
committed by Anup Patel
parent 37f9b0f2f2
commit 764a17d852
6 changed files with 60 additions and 0 deletions
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38
lib/sbi/sbi_tlb.c
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@@ -21,6 +21,7 @@
#include <sbi/sbi_string.h>
#include <sbi/sbi_console.h>
#include <sbi/sbi_platform.h>
#include <sbi/sbi_pmu.h>
static unsigned long tlb_sync_off;
static unsigned long tlb_fifo_off;
@@ -39,6 +40,8 @@ void sbi_tlb_local_hfence_vvma(struct sbi_tlb_info *tinfo)
unsigned long vmid = tinfo->vmid;
unsigned long i, hgatp;
sbi_pmu_ctr_incr_fw(SBI_PMU_FW_HFENCE_VVMA_RCVD);
hgatp = csr_swap(CSR_HGATP,
(vmid << HGATP_VMID_SHIFT) & HGATP_VMID_MASK);
@@ -61,6 +64,8 @@ void sbi_tlb_local_hfence_gvma(struct sbi_tlb_info *tinfo)
unsigned long size = tinfo->size;
unsigned long i;
sbi_pmu_ctr_incr_fw(SBI_PMU_FW_HFENCE_GVMA_RCVD);
if ((start == 0 && size == 0) || (size == SBI_TLB_FLUSH_ALL)) {
__sbi_hfence_gvma_all();
return;
@@ -77,6 +82,8 @@ void sbi_tlb_local_sfence_vma(struct sbi_tlb_info *tinfo)
unsigned long size = tinfo->size;
unsigned long i;
sbi_pmu_ctr_incr_fw(SBI_PMU_FW_SFENCE_VMA_RCVD);
if ((start == 0 && size == 0) || (size == SBI_TLB_FLUSH_ALL)) {
sbi_tlb_flush_all();
return;
@@ -98,6 +105,8 @@ void sbi_tlb_local_hfence_vvma_asid(struct sbi_tlb_info *tinfo)
unsigned long vmid = tinfo->vmid;
unsigned long i, hgatp;
sbi_pmu_ctr_incr_fw(SBI_PMU_FW_HFENCE_VVMA_ASID_RCVD);
hgatp = csr_swap(CSR_HGATP,
(vmid << HGATP_VMID_SHIFT) & HGATP_VMID_MASK);
@@ -126,6 +135,8 @@ void sbi_tlb_local_hfence_gvma_vmid(struct sbi_tlb_info *tinfo)
unsigned long vmid = tinfo->vmid;
unsigned long i;
sbi_pmu_ctr_incr_fw(SBI_PMU_FW_HFENCE_GVMA_VMID_RCVD);
if (start == 0 && size == 0) {
__sbi_hfence_gvma_all();
return;
@@ -148,6 +159,8 @@ void sbi_tlb_local_sfence_vma_asid(struct sbi_tlb_info *tinfo)
unsigned long asid = tinfo->asid;
unsigned long i;
sbi_pmu_ctr_incr_fw(SBI_PMU_FW_SFENCE_VMA_ASID_RCVD);
if (start == 0 && size == 0) {
sbi_tlb_flush_all();
return;
@@ -172,9 +185,32 @@ void sbi_tlb_local_sfence_vma_asid(struct sbi_tlb_info *tinfo)
void sbi_tlb_local_fence_i(struct sbi_tlb_info *tinfo)
{
sbi_pmu_ctr_incr_fw(SBI_PMU_FW_FENCE_I_RECVD);
__asm__ __volatile("fence.i");
}
static void tlb_pmu_incr_fw_ctr(struct sbi_tlb_info *data)
{
if (unlikely(!data))
return;
if (data->local_fn == sbi_tlb_local_fence_i)
sbi_pmu_ctr_incr_fw(SBI_PMU_FW_FENCE_I_SENT);
else if (data->local_fn == sbi_tlb_local_sfence_vma)
sbi_pmu_ctr_incr_fw(SBI_PMU_FW_SFENCE_VMA_SENT);
else if (data->local_fn == sbi_tlb_local_sfence_vma_asid)
sbi_pmu_ctr_incr_fw(SBI_PMU_FW_SFENCE_VMA_ASID_SENT);
else if (data->local_fn == sbi_tlb_local_hfence_gvma)
sbi_pmu_ctr_incr_fw(SBI_PMU_FW_HFENCE_GVMA_SENT);
else if (data->local_fn == sbi_tlb_local_hfence_gvma_vmid)
sbi_pmu_ctr_incr_fw(SBI_PMU_FW_HFENCE_GVMA_VMID_SENT);
else if (data->local_fn == sbi_tlb_local_hfence_vvma)
sbi_pmu_ctr_incr_fw(SBI_PMU_FW_HFENCE_VVMA_SENT);
else if (data->local_fn == sbi_tlb_local_hfence_vvma_asid)
sbi_pmu_ctr_incr_fw(SBI_PMU_FW_HFENCE_VVMA_ASID_SENT);
}
static void sbi_tlb_entry_process(struct sbi_tlb_info *tinfo)
{
u32 rhartid;
@@ -369,6 +405,8 @@ int sbi_tlb_request(ulong hmask, ulong hbase, struct sbi_tlb_info *tinfo)
if (!tinfo->local_fn)
return SBI_EINVAL;
tlb_pmu_incr_fw_ctr(tinfo);
return sbi_ipi_send_many(hmask, hbase, tlb_event, tinfo);
}