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lib: sbi: Maximize the use of HART index in sbi_domain

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Let us maximize the use of HART index in sbi_domain because hartindex
based hartmask access and sbi_scratch lookup is faster.

Signed-off-by: Anup Patel <apatel@ventanamicro.com>
This commit is contained in:
Anup Patel 2023-09-02 16:16:20 +05:30 • committed by Anup Patel
parent 22d6ff8675
commit 112daa2e64
2 changed files with 33 additions and 29 deletions
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6
include/sbi/sbi_domain.h
View file

@ -201,12 +201,12 @@ struct sbi_domain {
/** The root domain instance */
extern struct sbi_domain root;
/** Get pointer to sbi_domain from HART id */
struct sbi_domain *sbi_hartid_to_domain(u32 hartid);
/** Get pointer to sbi_domain from HART index */
struct sbi_domain *sbi_hartindex_to_domain(u32 hartindex);
/** Get pointer to sbi_domain for current HART */
#define sbi_domain_thishart_ptr() \
sbi_hartid_to_domain(current_hartid())
sbi_hartindex_to_domain(sbi_hartid_to_hartindex(current_hartid()))
/** Index to domain table */
extern struct sbi_domain *domidx_to_domain_table[];

56
lib/sbi/sbi_domain.c
View file

@ -40,22 +40,22 @@ struct sbi_domain root = {
static unsigned long domain_hart_ptr_offset;
struct sbi_domain *sbi_hartid_to_domain(u32 hartid)
struct sbi_domain *sbi_hartindex_to_domain(u32 hartindex)
{
struct sbi_scratch *scratch;
scratch = sbi_hartid_to_scratch(hartid);
scratch = sbi_hartindex_to_scratch(hartindex);
if (!scratch || !domain_hart_ptr_offset)
return NULL;
return sbi_scratch_read_type(scratch, void *, domain_hart_ptr_offset);
}
static void update_hartid_to_domain(u32 hartid, struct sbi_domain *dom)
static void update_hartindex_to_domain(u32 hartindex, struct sbi_domain *dom)
{
struct sbi_scratch *scratch;
scratch = sbi_hartid_to_scratch(hartid);
scratch = sbi_hartindex_to_scratch(hartindex);
if (!scratch)
return;
@ -268,10 +268,11 @@ static int sanitize_domain(const struct sbi_platform *plat,
__func__, dom->name);
return SBI_EINVAL;
}
sbi_hartmask_for_each_hart(i, j, dom->possible_harts) {
if (!sbi_hartid_valid(i)) {
sbi_hartmask_for_each_hartindex(i, dom->possible_harts) {
if (!sbi_hartindex_valid(i)) {
sbi_printf("%s: %s possible HART mask has invalid "
"hart %d\n", __func__, dom->name, i);
"hart %d\n", __func__,
dom->name, sbi_hartindex_to_hartid(i));
return SBI_EINVAL;
}
}
@ -404,9 +405,11 @@ void sbi_domain_dump(const struct sbi_domain *dom, const char *suffix)
k = 0;
sbi_printf("Domain%d HARTs %s: ", dom->index, suffix);
sbi_hartmask_for_each_hart(i, j, dom->possible_harts)
sbi_hartmask_for_each_hartindex(i, dom->possible_harts) {
j = sbi_hartindex_to_hartid(i);
sbi_printf("%s%d%s", (k++) ? "," : "",
i, sbi_domain_is_assigned_hart(dom, i) ? "*" : "");
j, sbi_domain_is_assigned_hart(dom, j) ? "*" : "");
}
sbi_printf("\n");
i = 0;
@ -487,7 +490,7 @@ void sbi_domain_dump_all(const char *suffix)
int sbi_domain_register(struct sbi_domain *dom,
const struct sbi_hartmask *assign_mask)
{
u32 i, j;
u32 i;
int rc;
struct sbi_domain *tdom;
u32 cold_hartid = current_hartid();
@ -530,22 +533,22 @@ int sbi_domain_register(struct sbi_domain *dom,
sbi_hartmask_clear_all(&dom->assigned_harts);
/* Assign domain to HART if HART is a possible HART */
sbi_hartmask_for_each_hart(i, j, assign_mask) {
if (!sbi_hartmask_test_hartid(i, dom->possible_harts))
sbi_hartmask_for_each_hartindex(i, assign_mask) {
if (!sbi_hartmask_test_hartindex(i, dom->possible_harts))
continue;
tdom = sbi_hartid_to_domain(i);
tdom = sbi_hartindex_to_domain(i);
if (tdom)
sbi_hartmask_clear_hartid(i,
sbi_hartmask_clear_hartindex(i,
&tdom->assigned_harts);
update_hartid_to_domain(i, dom);
sbi_hartmask_set_hartid(i, &dom->assigned_harts);
update_hartindex_to_domain(i, dom);
sbi_hartmask_set_hartindex(i, &dom->assigned_harts);
/*
* If cold boot HART is assigned to this domain then
* override boot HART of this domain.
*/
if (i == cold_hartid &&
if (sbi_hartindex_to_hartid(i) == cold_hartid &&
dom->boot_hartid != cold_hartid) {
sbi_printf("Domain%d Boot HARTID forced to"
" %d\n", dom->index, cold_hartid);
@ -665,36 +668,37 @@ int sbi_domain_finalize(struct sbi_scratch *scratch, u32 cold_hartid)
/* Startup boot HART of domains */
sbi_domain_for_each(i, dom) {
/* Domain boot HART */
dhart = dom->boot_hartid;
/* Domain boot HART index */
dhart = sbi_hartid_to_hartindex(dom->boot_hartid);
/* Ignore of boot HART is off limits */
if (SBI_HARTMASK_MAX_BITS <= dhart)
if (!sbi_hartindex_valid(dhart))
continue;
/* Ignore if boot HART not possible for this domain */
if (!sbi_hartmask_test_hartid(dhart, dom->possible_harts))
if (!sbi_hartmask_test_hartindex(dhart, dom->possible_harts))
continue;
/* Ignore if boot HART assigned different domain */
if (sbi_hartid_to_domain(dhart) != dom ||
!sbi_hartmask_test_hartid(dhart, &dom->assigned_harts))
if (sbi_hartindex_to_domain(dhart) != dom ||
!sbi_hartmask_test_hartindex(dhart, &dom->assigned_harts))
continue;
/* Startup boot HART of domain */
if (dhart == cold_hartid) {
if (dom->boot_hartid == cold_hartid) {
scratch->next_addr = dom->next_addr;
scratch->next_mode = dom->next_mode;
scratch->next_arg1 = dom->next_arg1;
} else {
rc = sbi_hsm_hart_start(scratch, NULL, dhart,
rc = sbi_hsm_hart_start(scratch, NULL,
dom->boot_hartid,
dom->next_addr,
dom->next_mode,
dom->next_arg1);
if (rc) {
sbi_printf("%s: failed to start boot HART %d"
" for %s (error %d)\n", __func__,
dhart, dom->name, rc);
dom->boot_hartid, dom->name, rc);
return rc;
}
}