From cde9070d9970eef1f7ec2360586c802a16230ad8 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Fri, 10 May 2024 07:43:50 +0000
Subject: [PATCH] rtl88x2CE_WiFi_linux driver
---
kernel/drivers/memstick/core/mspro_block.c | 134 +++++++++++++++++++++++---------------------
1 files changed, 70 insertions(+), 64 deletions(-)
diff --git a/kernel/drivers/memstick/core/mspro_block.c b/kernel/drivers/memstick/core/mspro_block.c
index 5ee9326..cd6b8d4 100644
--- a/kernel/drivers/memstick/core/mspro_block.c
+++ b/kernel/drivers/memstick/core/mspro_block.c
@@ -1,18 +1,14 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* Sony MemoryStick Pro storage support
*
* Copyright (C) 2007 Alex Dubov <oakad@yahoo.com>
*
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
* Special thanks to Carlos Corbacho for providing various MemoryStick cards
* that made this driver possible.
- *
*/
-#include <linux/blkdev.h>
+#include <linux/blk-mq.h>
#include <linux/idr.h>
#include <linux/hdreg.h>
#include <linux/kthread.h>
@@ -142,6 +138,7 @@
struct gendisk *disk;
struct request_queue *queue;
struct request *block_req;
+ struct blk_mq_tag_set tag_set;
spinlock_t q_lock;
unsigned short page_size;
@@ -152,7 +149,6 @@
unsigned char system;
unsigned char read_only:1,
eject:1,
- has_request:1,
data_dir:1,
active:1;
unsigned char transfer_cmd;
@@ -694,14 +690,13 @@
/*** Data transfer ***/
-static int mspro_block_issue_req(struct memstick_dev *card, int chunk)
+static int mspro_block_issue_req(struct memstick_dev *card)
{
struct mspro_block_data *msb = memstick_get_drvdata(card);
u64 t_off;
unsigned int count;
-try_again:
- while (chunk) {
+ while (true) {
msb->current_page = 0;
msb->current_seg = 0;
msb->seg_count = blk_rq_map_sg(msb->block_req->q,
@@ -709,9 +704,18 @@
msb->req_sg);
if (!msb->seg_count) {
- chunk = __blk_end_request_cur(msb->block_req,
- BLK_STS_RESOURCE);
- continue;
+ unsigned int bytes = blk_rq_cur_bytes(msb->block_req);
+ bool chunk;
+
+ chunk = blk_update_request(msb->block_req,
+ BLK_STS_RESOURCE,
+ bytes);
+ if (chunk)
+ continue;
+ __blk_mq_end_request(msb->block_req,
+ BLK_STS_RESOURCE);
+ msb->block_req = NULL;
+ return -EAGAIN;
}
t_off = blk_rq_pos(msb->block_req);
@@ -728,31 +732,21 @@
memstick_new_req(card->host);
return 0;
}
-
- dev_dbg(&card->dev, "blk_fetch\n");
- msb->block_req = blk_fetch_request(msb->queue);
- if (!msb->block_req) {
- dev_dbg(&card->dev, "issue end\n");
- return -EAGAIN;
- }
-
- dev_dbg(&card->dev, "trying again\n");
- chunk = 1;
- goto try_again;
}
static int mspro_block_complete_req(struct memstick_dev *card, int error)
{
struct mspro_block_data *msb = memstick_get_drvdata(card);
- int chunk, cnt;
+ int cnt;
+ bool chunk;
unsigned int t_len = 0;
unsigned long flags;
spin_lock_irqsave(&msb->q_lock, flags);
- dev_dbg(&card->dev, "complete %d, %d\n", msb->has_request ? 1 : 0,
+ dev_dbg(&card->dev, "complete %d, %d\n", msb->block_req ? 1 : 0,
error);
- if (msb->has_request) {
+ if (msb->block_req) {
/* Nothing to do - not really an error */
if (error == -EAGAIN)
error = 0;
@@ -777,15 +771,17 @@
if (error && !t_len)
t_len = blk_rq_cur_bytes(msb->block_req);
- chunk = __blk_end_request(msb->block_req,
+ chunk = blk_update_request(msb->block_req,
errno_to_blk_status(error), t_len);
-
- error = mspro_block_issue_req(card, chunk);
-
- if (!error)
- goto out;
- else
- msb->has_request = 0;
+ if (chunk) {
+ error = mspro_block_issue_req(card);
+ if (!error)
+ goto out;
+ } else {
+ __blk_mq_end_request(msb->block_req,
+ errno_to_blk_status(error));
+ msb->block_req = NULL;
+ }
} else {
if (!error)
error = -EAGAIN;
@@ -806,8 +802,8 @@
while (1) {
spin_lock_irqsave(&msb->q_lock, flags);
- if (!msb->has_request) {
- blk_stop_queue(msb->queue);
+ if (!msb->block_req) {
+ blk_mq_stop_hw_queues(msb->queue);
rc = 1;
}
spin_unlock_irqrestore(&msb->q_lock, flags);
@@ -822,32 +818,37 @@
static void mspro_block_start(struct memstick_dev *card)
{
struct mspro_block_data *msb = memstick_get_drvdata(card);
- unsigned long flags;
- spin_lock_irqsave(&msb->q_lock, flags);
- blk_start_queue(msb->queue);
- spin_unlock_irqrestore(&msb->q_lock, flags);
+ blk_mq_start_hw_queues(msb->queue);
}
-static void mspro_block_submit_req(struct request_queue *q)
+static blk_status_t mspro_queue_rq(struct blk_mq_hw_ctx *hctx,
+ const struct blk_mq_queue_data *bd)
{
- struct memstick_dev *card = q->queuedata;
+ struct memstick_dev *card = hctx->queue->queuedata;
struct mspro_block_data *msb = memstick_get_drvdata(card);
- struct request *req = NULL;
- if (msb->has_request)
- return;
+ spin_lock_irq(&msb->q_lock);
- if (msb->eject) {
- while ((req = blk_fetch_request(q)) != NULL)
- __blk_end_request_all(req, BLK_STS_IOERR);
-
- return;
+ if (msb->block_req) {
+ spin_unlock_irq(&msb->q_lock);
+ return BLK_STS_DEV_RESOURCE;
}
- msb->has_request = 1;
- if (mspro_block_issue_req(card, 0))
- msb->has_request = 0;
+ if (msb->eject) {
+ spin_unlock_irq(&msb->q_lock);
+ blk_mq_start_request(bd->rq);
+ return BLK_STS_IOERR;
+ }
+
+ msb->block_req = bd->rq;
+ blk_mq_start_request(bd->rq);
+
+ if (mspro_block_issue_req(card))
+ msb->block_req = NULL;
+
+ spin_unlock_irq(&msb->q_lock);
+ return BLK_STS_OK;
}
/*** Initialization ***/
@@ -1167,6 +1168,10 @@
}
+static const struct blk_mq_ops mspro_mq_ops = {
+ .queue_rq = mspro_queue_rq,
+};
+
static int mspro_block_init_disk(struct memstick_dev *card)
{
struct mspro_block_data *msb = memstick_get_drvdata(card);
@@ -1206,9 +1211,11 @@
goto out_release_id;
}
- msb->queue = blk_init_queue(mspro_block_submit_req, &msb->q_lock);
- if (!msb->queue) {
- rc = -ENOMEM;
+ msb->queue = blk_mq_init_sq_queue(&msb->tag_set, &mspro_mq_ops, 2,
+ BLK_MQ_F_SHOULD_MERGE);
+ if (IS_ERR(msb->queue)) {
+ rc = PTR_ERR(msb->queue);
+ msb->queue = NULL;
goto out_put_disk;
}
@@ -1236,7 +1243,7 @@
set_capacity(msb->disk, capacity);
dev_dbg(&card->dev, "capacity set %ld\n", capacity);
- device_add_disk(&card->dev, msb->disk);
+ device_add_disk(&card->dev, msb->disk, NULL);
msb->active = 1;
return 0;
@@ -1318,13 +1325,14 @@
spin_lock_irqsave(&msb->q_lock, flags);
msb->eject = 1;
- blk_start_queue(msb->queue);
spin_unlock_irqrestore(&msb->q_lock, flags);
+ blk_mq_start_hw_queues(msb->queue);
del_gendisk(msb->disk);
dev_dbg(&card->dev, "mspro block remove\n");
blk_cleanup_queue(msb->queue);
+ blk_mq_free_tag_set(&msb->tag_set);
msb->queue = NULL;
sysfs_remove_group(&card->dev.kobj, &msb->attr_group);
@@ -1344,8 +1352,9 @@
struct mspro_block_data *msb = memstick_get_drvdata(card);
unsigned long flags;
+ blk_mq_stop_hw_queues(msb->queue);
+
spin_lock_irqsave(&msb->q_lock, flags);
- blk_stop_queue(msb->queue);
msb->active = 0;
spin_unlock_irqrestore(&msb->q_lock, flags);
@@ -1355,7 +1364,6 @@
static int mspro_block_resume(struct memstick_dev *card)
{
struct mspro_block_data *msb = memstick_get_drvdata(card);
- unsigned long flags;
int rc = 0;
#ifdef CONFIG_MEMSTICK_UNSAFE_RESUME
@@ -1401,9 +1409,7 @@
#endif /* CONFIG_MEMSTICK_UNSAFE_RESUME */
- spin_lock_irqsave(&msb->q_lock, flags);
- blk_start_queue(msb->queue);
- spin_unlock_irqrestore(&msb->q_lock, flags);
+ blk_mq_start_hw_queues(msb->queue);
return rc;
}
--
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