mirror of
https://github.com/coolsnowwolf/lede.git
synced 2025-07-23 17:47:28 +08:00
d81c03f05e
These patches were generated from: https://github.com/raspberrypi/linux/commits/rpi-6.12.y With the following command: git format-patch -N v6.12.27..HEAD (HEAD -> 8d3206ee456a5ecdf9ddbfd8e5e231e4f0cd716e) Exceptions: - (def)configs patches - github workflows patches - applied & reverted patches - readme patches - wireless patches Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
80 lines
2.7 KiB
Diff
80 lines
2.7 KiB
Diff
From 45fa95bc33c6aa3d274efe03f4d1c3cdf359f7be Mon Sep 17 00:00:00 2001
|
|
From: Jonathan Bell <jonathan@raspberrypi.com>
|
|
Date: Tue, 26 Mar 2024 13:36:23 +0000
|
|
Subject: [PATCH] drivers: mmc: be more cautious when manipulating Command
|
|
Queue enable
|
|
|
|
Don't attempt to turn on CQ if the other mandatory features are not
|
|
indicated as supported by the card. Also make sure that the register write
|
|
actually stuck, as some cards claim support but never report back that
|
|
the queue engine is enabled.
|
|
|
|
Signed-off-by: Jonathan Bell <jonathan@raspberrypi.com>
|
|
---
|
|
drivers/mmc/core/sd.c | 8 ++++++--
|
|
drivers/mmc/core/sd_ops.c | 22 ++++++++++++++++++++++
|
|
2 files changed, 28 insertions(+), 2 deletions(-)
|
|
|
|
--- a/drivers/mmc/core/sd.c
|
|
+++ b/drivers/mmc/core/sd.c
|
|
@@ -1084,8 +1084,12 @@ static int sd_parse_ext_reg_perf(struct
|
|
if ((reg_buf[4] & BIT(0)) && !mmc_card_broken_sd_cache(card))
|
|
card->ext_perf.feature_support |= SD_EXT_PERF_CACHE;
|
|
|
|
- /* Command queue support indicated via queue depth bits (0 to 4). */
|
|
- if (reg_buf[6] & 0x1f) {
|
|
+ /*
|
|
+ * Command queue support indicated via queue depth bits (0 to 4).
|
|
+ * Qualify this with the other mandatory required features.
|
|
+ */
|
|
+ if (reg_buf[6] & 0x1f && card->ext_power.feature_support & SD_EXT_POWER_OFF_NOTIFY &&
|
|
+ card->ext_perf.feature_support & SD_EXT_PERF_CACHE) {
|
|
card->ext_perf.feature_support |= SD_EXT_PERF_CMD_QUEUE;
|
|
card->ext_csd.cmdq_depth = reg_buf[6] & 0x1f;
|
|
card->ext_csd.cmdq_support = true;
|
|
--- a/drivers/mmc/core/sd_ops.c
|
|
+++ b/drivers/mmc/core/sd_ops.c
|
|
@@ -8,6 +8,7 @@
|
|
#include <linux/slab.h>
|
|
#include <linux/types.h>
|
|
#include <linux/export.h>
|
|
+#include <linux/ktime.h>
|
|
#include <linux/scatterlist.h>
|
|
|
|
#include <linux/mmc/host.h>
|
|
@@ -476,6 +477,8 @@ static int mmc_sd_cmdq_switch(struct mmc
|
|
{
|
|
int err;
|
|
u8 reg = 0;
|
|
+ u8 *reg_buf = card->ext_reg_buf;
|
|
+ ktime_t timeout;
|
|
/*
|
|
* SD offers two command queueing modes - sequential (in-order) and
|
|
* voluntary (out-of-order). Apps Class A2 performance is only
|
|
@@ -488,6 +491,25 @@ static int mmc_sd_cmdq_switch(struct mmc
|
|
/* Performance enhancement register byte 262 controls command queueing */
|
|
err = mmc_sd_write_ext_reg(card, card->ext_perf.fno, card->ext_perf.page,
|
|
card->ext_perf.offset + 262, reg);
|
|
+ if (err)
|
|
+ goto out;
|
|
+
|
|
+ /* Poll the register - cards may have a lazy init/deinit sequence. */
|
|
+ timeout = ktime_add_ms(ktime_get(), 10);
|
|
+ while (1) {
|
|
+ err = mmc_sd_read_ext_reg(card, card->ext_perf.fno, card->ext_perf.page,
|
|
+ card->ext_perf.offset + 262, 1, reg_buf);
|
|
+ if (err)
|
|
+ break;
|
|
+ if ((reg_buf[0] & BIT(0)) == reg)
|
|
+ break;
|
|
+ if (ktime_after(ktime_get(), timeout)) {
|
|
+ err = -EBADMSG;
|
|
+ break;
|
|
+ }
|
|
+ usleep_range(100, 200);
|
|
+ }
|
|
+out:
|
|
if (!err)
|
|
card->ext_csd.cmdq_en = enable;
|
|
|