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lib: sbi_ecall_legacy: Use SBI v0.2 encoding for "all harts"

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This simplifies the logic so that sbi_hsm_hart_interruptible_mask() is
only called from one place (sbi_ipi_send_many()). A minor functional
change is that the legacy functions can now affect more than XLEN harts
when targeting all harts.

Signed-off-by: Samuel Holland <samuel.holland@sifive.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
This commit is contained in:
Samuel Holland
2024-08-30 08:49:10 -07:00
committed by Anup Patel
parent 7f5fa9f9a4
commit 633e7cbd50
1 changed files with 12 additions and 13 deletions
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25
lib/sbi/sbi_ecall_legacy.c
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@@ -14,7 +14,6 @@
#include <sbi/sbi_ecall.h>
#include <sbi/sbi_ecall_interface.h>
#include <sbi/sbi_error.h>
#include <sbi/sbi_hsm.h>
#include <sbi/sbi_ipi.h>
#include <sbi/sbi_platform.h>
#include <sbi/sbi_system.h>
@@ -24,7 +23,7 @@
#include <sbi/sbi_unpriv.h>
#include <sbi/sbi_hart.h>
static bool sbi_load_hart_mask_unpriv(ulong *pmask, ulong *hmask,
static bool sbi_load_hart_mask_unpriv(ulong *pmask, ulong *hmask, ulong *hbase,
struct sbi_trap_info *uptrap)
{
ulong mask = 0;
@@ -33,9 +32,9 @@ static bool sbi_load_hart_mask_unpriv(ulong *pmask, ulong *hmask,
mask = sbi_load_ulong(pmask, uptrap);
if (uptrap->cause)
return false;
*hbase = 0;
} else {
sbi_hsm_hart_interruptible_mask(sbi_domain_thishart_ptr(),
0, &mask);
*hbase = -1UL;
}
*hmask = mask;
@@ -50,7 +49,7 @@ static int sbi_ecall_legacy_handler(unsigned long extid, unsigned long funcid,
struct sbi_tlb_info tlb_info;
u32 source_hart = current_hartid();
struct sbi_trap_info trap = {0};
ulong hmask = 0;
ulong hmask, hbase;
switch (extid) {
case SBI_EXT_0_1_SET_TIMER:
@@ -71,8 +70,8 @@ static int sbi_ecall_legacy_handler(unsigned long extid, unsigned long funcid,
break;
case SBI_EXT_0_1_SEND_IPI:
if (sbi_load_hart_mask_unpriv((ulong *)regs->a0,
&hmask, &trap)) {
ret = sbi_ipi_send_smode(hmask, 0);
&hmask, &hbase, &trap)) {
ret = sbi_ipi_send_smode(hmask, hbase);
} else {
sbi_trap_redirect(regs, &trap);
out->skip_regs_update = true;
@@ -80,10 +79,10 @@ static int sbi_ecall_legacy_handler(unsigned long extid, unsigned long funcid,
break;
case SBI_EXT_0_1_REMOTE_FENCE_I:
if (sbi_load_hart_mask_unpriv((ulong *)regs->a0,
&hmask, &trap)) {
&hmask, &hbase, &trap)) {
SBI_TLB_INFO_INIT(&tlb_info, 0, 0, 0, 0,
SBI_TLB_FENCE_I, source_hart);
ret = sbi_tlb_request(hmask, 0, &tlb_info);
ret = sbi_tlb_request(hmask, hbase, &tlb_info);
} else {
sbi_trap_redirect(regs, &trap);
out->skip_regs_update = true;
@@ -91,10 +90,10 @@ static int sbi_ecall_legacy_handler(unsigned long extid, unsigned long funcid,
break;
case SBI_EXT_0_1_REMOTE_SFENCE_VMA:
if (sbi_load_hart_mask_unpriv((ulong *)regs->a0,
&hmask, &trap)) {
&hmask, &hbase, &trap)) {
SBI_TLB_INFO_INIT(&tlb_info, regs->a1, regs->a2, 0, 0,
SBI_TLB_SFENCE_VMA, source_hart);
ret = sbi_tlb_request(hmask, 0, &tlb_info);
ret = sbi_tlb_request(hmask, hbase, &tlb_info);
} else {
sbi_trap_redirect(regs, &trap);
out->skip_regs_update = true;
@@ -102,12 +101,12 @@ static int sbi_ecall_legacy_handler(unsigned long extid, unsigned long funcid,
break;
case SBI_EXT_0_1_REMOTE_SFENCE_VMA_ASID:
if (sbi_load_hart_mask_unpriv((ulong *)regs->a0,
&hmask, &trap)) {
&hmask, &hbase, &trap)) {
SBI_TLB_INFO_INIT(&tlb_info, regs->a1,
regs->a2, regs->a3, 0,
SBI_TLB_SFENCE_VMA_ASID,
source_hart);
ret = sbi_tlb_request(hmask, 0, &tlb_info);
ret = sbi_tlb_request(hmask, hbase, &tlb_info);
} else {
sbi_trap_redirect(regs, &trap);
out->skip_regs_update = true;