Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Jump to bottom

ARCv3: Fix displayed L2$ size #161

Merged
merged 1 commit into from
Jul 12, 2024
Merged

ARCv3: Fix displayed L2$ size #161

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
14 changes: 11 additions & 3 deletions arch/arc/mm/cache-arcv3.c
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -14,6 +14,10 @@
#include <asm/setup.h>
#include <asm/cachectl.h>

/* Based on ARCv3 documentation, line size for L2$ is fixed to 64 bytes */
#define ARCV3_L2_CACHE_LINE_SIZE 64
#define ARCV3_L2_CACHE_LINE_SHIFT 6

int l2_enable = IS_ENABLED(CONFIG_ARC_HAS_SCM);

static struct cpuinfo_arc_cache {
Expand All @@ -37,6 +41,7 @@ static int read_decode_cache_bcr_arcv3(int c, char *buf, int len)
struct bcr_cln_0_cfg cln0;
struct bcr_cln_scm_0_cfg scm0;
int n = 0;
int assoc;

p_l2->sz_k = 0;

Expand All @@ -51,9 +56,12 @@ static int read_decode_cache_bcr_arcv3(int c, char *buf, int len)
if (cln0.has_scm) {
READ_BCR(ARC_REG_CLNR_SCM_BCR_0, scm0);

p_l2->sz_k = (1 << scm0.data_bank_sz) * (1 << scm0.data_banks);
/* Fixed to 64. */
p_l2->line_len = 64;
assoc = (scm0.cache_assoc == 0) ? 16 : scm0.cache_assoc;
p_l2->sz_k = (scm0.cache_blk_sz << ARCV3_L2_CACHE_LINE_SHIFT) * assoc *
(1 << scm0.cache_sets);
p_l2->sz_k /= 1024;
/* Fixed to 64 */
p_l2->line_len = ARCV3_L2_CACHE_LINE_SIZE;

n += scnprintf(buf + n, len - n,
"L2\t\t: %uK, %uB Line%s\n",
Expand Down
Loading