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/ms_block.c | 144 +++++++++++++++++++++++++----------------------
1 files changed, 76 insertions(+), 68 deletions(-)
diff --git a/kernel/drivers/memstick/core/ms_block.c b/kernel/drivers/memstick/core/ms_block.c
index 8bd4a66..6df98c0 100644
--- a/kernel/drivers/memstick/core/ms_block.c
+++ b/kernel/drivers/memstick/core/ms_block.c
@@ -1,21 +1,17 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* ms_block.c - Sony MemoryStick (legacy) storage support
* Copyright (C) 2013 Maxim Levitsky <maximlevitsky@gmail.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.
- *
* Minor portions of the driver were copied from mspro_block.c which is
* Copyright (C) 2007 Alex Dubov <oakad@yahoo.com>
- *
*/
#define DRIVER_NAME "ms_block"
#define pr_fmt(fmt) DRIVER_NAME ": " fmt
#include <linux/module.h>
-#include <linux/blkdev.h>
+#include <linux/blk-mq.h>
#include <linux/memstick.h>
#include <linux/idr.h>
#include <linux/hdreg.h>
@@ -375,7 +371,7 @@
serial mode), then just fall through */
if (msb_read_int_reg(msb, -1))
return 0;
- /* fallthrough */
+ fallthrough;
case MSB_RP_RECEIVE_INT_REQ_RESULT:
intreg = mrq->data[0];
@@ -407,7 +403,7 @@
case MSB_RP_RECEIVE_STATUS_REG:
msb->regs.status = *(struct ms_status_register *)mrq->data;
msb->state = MSB_RP_SEND_OOB_READ;
- /* fallthrough */
+ fallthrough;
case MSB_RP_SEND_OOB_READ:
if (!msb_read_regs(msb,
@@ -422,7 +418,7 @@
msb->regs.extra_data =
*(struct ms_extra_data_register *) mrq->data;
msb->state = MSB_RP_SEND_READ_DATA;
- /* fallthrough */
+ fallthrough;
case MSB_RP_SEND_READ_DATA:
/* Skip that state if we only read the oob */
@@ -522,7 +518,7 @@
msb->state = MSB_WB_RECEIVE_INT_REQ;
if (msb_read_int_reg(msb, -1))
return 0;
- /* fallthrough */
+ fallthrough;
case MSB_WB_RECEIVE_INT_REQ:
intreg = mrq->data[0];
@@ -553,7 +549,7 @@
msb->int_polling = false;
msb->state = MSB_WB_SEND_WRITE_DATA;
- /* fallthrough */
+ fallthrough;
case MSB_WB_SEND_WRITE_DATA:
sg_init_table(sg, ARRAY_SIZE(sg));
@@ -632,7 +628,7 @@
msb->state = MSB_SC_RECEIVE_INT_REQ;
if (msb_read_int_reg(msb, -1))
return 0;
- /* fallthrough */
+ fallthrough;
case MSB_SC_RECEIVE_INT_REQ:
intreg = mrq->data[0];
@@ -1091,7 +1087,7 @@
pos %= msb->free_block_count[zone];
- dbg_verbose("have %d choices for a free block, selected randomally: %d",
+ dbg_verbose("have %d choices for a free block, selected randomly: %d",
msb->free_block_count[zone], pos);
pba = find_next_zero_bit(msb->used_blocks_bitmap,
@@ -1227,7 +1223,7 @@
}
if (be16_to_cpu(page->header.block_id) != MS_BLOCK_BOOT_ID) {
- dbg("the pba at %d doesn' contain boot block ID", pba);
+ dbg("the pba at %d doesn't contain boot block ID", pba);
continue;
}
@@ -1339,17 +1335,17 @@
msb->zone_count = msb->block_count / MS_BLOCKS_IN_ZONE;
msb->logical_block_count = msb->zone_count * 496 - 2;
- msb->used_blocks_bitmap = kzalloc(msb->block_count / 8, GFP_KERNEL);
- msb->erased_blocks_bitmap = kzalloc(msb->block_count / 8, GFP_KERNEL);
+ msb->used_blocks_bitmap = bitmap_zalloc(msb->block_count, GFP_KERNEL);
+ msb->erased_blocks_bitmap = bitmap_zalloc(msb->block_count, GFP_KERNEL);
msb->lba_to_pba_table =
kmalloc_array(msb->logical_block_count, sizeof(u16),
GFP_KERNEL);
if (!msb->used_blocks_bitmap || !msb->lba_to_pba_table ||
!msb->erased_blocks_bitmap) {
- kfree(msb->used_blocks_bitmap);
+ bitmap_free(msb->used_blocks_bitmap);
+ bitmap_free(msb->erased_blocks_bitmap);
kfree(msb->lba_to_pba_table);
- kfree(msb->erased_blocks_bitmap);
return -ENOMEM;
}
@@ -1873,69 +1869,65 @@
struct msb_data *msb = container_of(work, struct msb_data, io_work);
int page, error, len;
sector_t lba;
- unsigned long flags;
struct scatterlist *sg = msb->prealloc_sg;
+ struct request *req;
dbg_verbose("IO: work started");
while (1) {
- spin_lock_irqsave(&msb->q_lock, flags);
+ spin_lock_irq(&msb->q_lock);
if (msb->need_flush_cache) {
msb->need_flush_cache = false;
- spin_unlock_irqrestore(&msb->q_lock, flags);
+ spin_unlock_irq(&msb->q_lock);
msb_cache_flush(msb);
continue;
}
- if (!msb->req) {
- msb->req = blk_fetch_request(msb->queue);
- if (!msb->req) {
- dbg_verbose("IO: no more requests exiting");
- spin_unlock_irqrestore(&msb->q_lock, flags);
- return;
- }
+ req = msb->req;
+ if (!req) {
+ dbg_verbose("IO: no more requests exiting");
+ spin_unlock_irq(&msb->q_lock);
+ return;
}
- spin_unlock_irqrestore(&msb->q_lock, flags);
-
- /* If card was removed meanwhile */
- if (!msb->req)
- return;
+ spin_unlock_irq(&msb->q_lock);
/* process the request */
dbg_verbose("IO: processing new request");
- blk_rq_map_sg(msb->queue, msb->req, sg);
+ blk_rq_map_sg(msb->queue, req, sg);
- lba = blk_rq_pos(msb->req);
+ lba = blk_rq_pos(req);
sector_div(lba, msb->page_size / 512);
page = sector_div(lba, msb->pages_in_block);
if (rq_data_dir(msb->req) == READ)
error = msb_do_read_request(msb, lba, page, sg,
- blk_rq_bytes(msb->req), &len);
+ blk_rq_bytes(req), &len);
else
error = msb_do_write_request(msb, lba, page, sg,
- blk_rq_bytes(msb->req), &len);
+ blk_rq_bytes(req), &len);
- spin_lock_irqsave(&msb->q_lock, flags);
-
- if (len)
- if (!__blk_end_request(msb->req, BLK_STS_OK, len))
- msb->req = NULL;
+ if (len && !blk_update_request(req, BLK_STS_OK, len)) {
+ __blk_mq_end_request(req, BLK_STS_OK);
+ spin_lock_irq(&msb->q_lock);
+ msb->req = NULL;
+ spin_unlock_irq(&msb->q_lock);
+ }
if (error && msb->req) {
blk_status_t ret = errno_to_blk_status(error);
+
dbg_verbose("IO: ending one sector of the request with error");
- if (!__blk_end_request(msb->req, ret, msb->page_size))
- msb->req = NULL;
+ blk_mq_end_request(req, ret);
+ spin_lock_irq(&msb->q_lock);
+ msb->req = NULL;
+ spin_unlock_irq(&msb->q_lock);
}
if (msb->req)
dbg_verbose("IO: request still pending");
-
- spin_unlock_irqrestore(&msb->q_lock, flags);
}
}
@@ -1961,7 +1953,8 @@
static void msb_data_clear(struct msb_data *msb)
{
kfree(msb->boot_page);
- kfree(msb->used_blocks_bitmap);
+ bitmap_free(msb->used_blocks_bitmap);
+ bitmap_free(msb->erased_blocks_bitmap);
kfree(msb->lba_to_pba_table);
kfree(msb->cache);
msb->card = NULL;
@@ -2002,29 +1995,40 @@
return 0;
}
-static void msb_submit_req(struct request_queue *q)
+static blk_status_t msb_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 msb_data *msb = memstick_get_drvdata(card);
- struct request *req = NULL;
+ struct request *req = bd->rq;
dbg_verbose("Submit request");
+
+ spin_lock_irq(&msb->q_lock);
if (msb->card_dead) {
dbg("Refusing requests on removed card");
WARN_ON(!msb->io_queue_stopped);
- while ((req = blk_fetch_request(q)) != NULL)
- __blk_end_request_all(req, BLK_STS_IOERR);
- return;
+ spin_unlock_irq(&msb->q_lock);
+ blk_mq_start_request(req);
+ return BLK_STS_IOERR;
}
- if (msb->req)
- return;
+ if (msb->req) {
+ spin_unlock_irq(&msb->q_lock);
+ return BLK_STS_DEV_RESOURCE;
+ }
+
+ blk_mq_start_request(req);
+ msb->req = req;
if (!msb->io_queue_stopped)
queue_work(msb->io_queue, &msb->io_work);
+
+ spin_unlock_irq(&msb->q_lock);
+ return BLK_STS_OK;
}
static int msb_check_card(struct memstick_dev *card)
@@ -2040,21 +2044,20 @@
dbg("Stopping all msblock IO");
+ blk_mq_stop_hw_queues(msb->queue);
spin_lock_irqsave(&msb->q_lock, flags);
- blk_stop_queue(msb->queue);
msb->io_queue_stopped = true;
spin_unlock_irqrestore(&msb->q_lock, flags);
del_timer_sync(&msb->cache_flush_timer);
flush_workqueue(msb->io_queue);
+ spin_lock_irqsave(&msb->q_lock, flags);
if (msb->req) {
- spin_lock_irqsave(&msb->q_lock, flags);
- blk_requeue_request(msb->queue, msb->req);
+ blk_mq_requeue_request(msb->req, false);
msb->req = NULL;
- spin_unlock_irqrestore(&msb->q_lock, flags);
}
-
+ spin_unlock_irqrestore(&msb->q_lock, flags);
}
static void msb_start(struct memstick_dev *card)
@@ -2077,9 +2080,7 @@
msb->need_flush_cache = true;
msb->io_queue_stopped = false;
- 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);
queue_work(msb->io_queue, &msb->io_work);
@@ -2090,6 +2091,10 @@
.release = msb_bd_release,
.getgeo = msb_bd_getgeo,
.owner = THIS_MODULE
+};
+
+static const struct blk_mq_ops msb_mq_ops = {
+ .queue_rq = msb_queue_rq,
};
/* Registers the block device */
@@ -2112,9 +2117,11 @@
goto out_release_id;
}
- msb->queue = blk_init_queue(msb_submit_req, &msb->q_lock);
- if (!msb->queue) {
- rc = -ENOMEM;
+ msb->queue = blk_mq_init_sq_queue(&msb->tag_set, &msb_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;
}
@@ -2146,7 +2153,7 @@
set_disk_ro(msb->disk, 1);
msb_start(card);
- device_add_disk(&card->dev, msb->disk);
+ device_add_disk(&card->dev, msb->disk, NULL);
dbg("Disk added");
return 0;
@@ -2202,12 +2209,13 @@
/* Take care of unhandled + new requests from now on */
spin_lock_irqsave(&msb->q_lock, flags);
msb->card_dead = true;
- blk_start_queue(msb->queue);
spin_unlock_irqrestore(&msb->q_lock, flags);
+ blk_mq_start_hw_queues(msb->queue);
/* Remove the disk */
del_gendisk(msb->disk);
blk_cleanup_queue(msb->queue);
+ blk_mq_free_tag_set(&msb->tag_set);
msb->queue = NULL;
mutex_lock(&msb_disk_lock);
--
Gitblit v1.6.2