SYS-OSS/FRET-qemu
4
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

hw/sd: Remove unused legacy functions, stop killing mammoths

Browse Source 
The sdcard_legacy.h header defines function prototypes for the "legacy"
SD card API, which was used by non-qdevified SD controller models.
We've now converted the only remaining non-qdev SD controller, so
we can drop the legacy API.

Entirely unused functions:
  sd_init(), sd_set_cb(), sd_enable()

Functions which now become static inside sd.c (they are the
underlying implementations of methods on SDCardClass):
  sd_do_command(), sd_write_byte(), sd_read_byte()

Removal of sd_init() means that we can also remove the
me_no_qdev_me_kill_mammoth_with_rocks flag, the codepaths that were
only reachable when it was set, and the inserted_cb and readonly_cb
qemu_irq lines that went with that.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Message-ID: <20250128104519.3981448-11-peter.maydell@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
This commit is contained in:
Peter Maydell 2025-01-28 10:45:18 +00:00 committed by Philippe Mathieu-Daudé
parent 08726e8259
commit bda21477f5
2 changed files with 8 additions and 119 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

77
hw/sd/sd.c
View File

@ -39,7 +39,6 @@
#include "hw/registerfields.h"
#include "system/block-backend.h"
#include "hw/sd/sd.h"
#include "hw/sd/sdcard_legacy.h"
#include "migration/vmstate.h"
#include "qapi/error.h"
#include "qemu/bitmap.h"
@ -120,10 +119,6 @@ typedef struct SDProto {
struct SDState {
DeviceState parent_obj;
/* If true, created by sd_init() for a non-qdevified caller */
/* TODO purge them with fire */
bool me_no_qdev_me_kill_mammoth_with_rocks;
/* SD Memory Card Registers */
uint32_t ocr;
uint8_t scr[8];
@ -177,8 +172,6 @@ struct SDState {
uint32_t data_offset;
size_t data_size;
uint8_t data[512];
qemu_irq readonly_cb;
qemu_irq inserted_cb;
QEMUTimer *ocr_power_timer;
bool enable;
uint8_t dat_lines;
@ -892,17 +885,10 @@ static void sd_cardchange(void *opaque, bool load, Error **errp)
trace_sdcard_ejected();
}
if (sd->me_no_qdev_me_kill_mammoth_with_rocks) {
qemu_set_irq(sd->inserted_cb, inserted);
if (inserted) {
qemu_set_irq(sd->readonly_cb, readonly);
}
} else {
sdbus = SD_BUS(qdev_get_parent_bus(dev));
sdbus_set_inserted(sdbus, inserted);
if (inserted) {
sdbus_set_readonly(sdbus, readonly);
}
sdbus = SD_BUS(qdev_get_parent_bus(dev));
sdbus_set_inserted(sdbus, inserted);
if (inserted) {
sdbus_set_readonly(sdbus, readonly);
}
}
@ -1000,48 +986,6 @@ static const VMStateDescription sd_vmstate = {
},
};
/* Legacy initialization function for use by non-qdevified callers */
SDState *sd_init(BlockBackend *blk, bool is_spi)
{
Object *obj;
DeviceState *dev;
SDState *sd;
Error *err = NULL;
obj = object_new(is_spi ? TYPE_SD_CARD_SPI : TYPE_SD_CARD);
dev = DEVICE(obj);
if (!qdev_prop_set_drive_err(dev, "drive", blk, &err)) {
error_reportf_err(err, "sd_init failed: ");
return NULL;
}
/*
* Realizing the device properly would put it into the QOM
* composition tree even though it is not plugged into an
* appropriate bus. That's a no-no. Hide the device from
* QOM/qdev, and call its qdev realize callback directly.
*/
object_ref(obj);
object_unparent(obj);
sd_realize(dev, &err);
if (err) {
error_reportf_err(err, "sd_init failed: ");
return NULL;
}
sd = SD_CARD(dev);
sd->me_no_qdev_me_kill_mammoth_with_rocks = true;
return sd;
}
void sd_set_cb(SDState *sd, qemu_irq readonly, qemu_irq insert)
{
sd->readonly_cb = readonly;
sd->inserted_cb = insert;
qemu_set_irq(readonly, sd->blk ? !blk_is_writable(sd->blk) : 0);
qemu_set_irq(insert, sd->blk ? blk_is_inserted(sd->blk) : 0);
}
static void sd_blk_read(SDState *sd, uint64_t addr, uint32_t len)
{
trace_sdcard_read_block(addr, len);
@ -2196,8 +2140,8 @@ static bool cmd_valid_while_locked(SDState *sd, unsigned cmd)
return cmd_class == 0 || cmd_class == 7;
}
int sd_do_command(SDState *sd, SDRequest *req,
uint8_t *response) {
static int sd_do_command(SDState *sd, SDRequest *req,
uint8_t *response) {
int last_state;
sd_rsp_type_t rtype;
int rsplen;
@ -2349,7 +2293,7 @@ static bool sd_generic_read_byte(SDState *sd, uint8_t *value)
return false;
}
void sd_write_byte(SDState *sd, uint8_t value)
static void sd_write_byte(SDState *sd, uint8_t value)
{
int i;
@ -2478,7 +2422,7 @@ void sd_write_byte(SDState *sd, uint8_t value)
}
}
uint8_t sd_read_byte(SDState *sd)
static uint8_t sd_read_byte(SDState *sd)
{
/* TODO: Append CRCs */
const uint8_t dummy_byte = 0x00;
@ -2561,11 +2505,6 @@ static bool sd_data_ready(SDState *sd)
return sd->state == sd_sendingdata_state;
}
void sd_enable(SDState *sd, bool enable)
{
sd->enable = enable;
}
static const SDProto sd_proto_spi = {
.name = "SPI",
.cmd = {

50
include/hw/sd/sdcard_legacy.h
View File

@ -1,50 +0,0 @@
/*
* SD Memory Card emulation (deprecated legacy API)
*
* Copyright (c) 2006 Andrzej Zaborowski <balrog@zabor.org>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS''
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
* PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef HW_SDCARD_LEGACY_H
#define HW_SDCARD_LEGACY_H
#include "hw/sd/sd.h"
/* Legacy functions to be used only by non-qdevified callers */
SDState *sd_init(BlockBackend *blk, bool is_spi);
int sd_do_command(SDState *card, SDRequest *request, uint8_t *response);
void sd_write_byte(SDState *card, uint8_t value);
uint8_t sd_read_byte(SDState *card);
void sd_set_cb(SDState *card, qemu_irq readonly, qemu_irq insert);
/* sd_enable should not be used -- it is only used on the nseries boards,
* where it is part of a broken implementation of the MMC card slot switch
* (there should be two card slots which are multiplexed to a single MMC
* controller, but instead we model it with one card and controller and
* disable the card when the second slot is selected, so it looks like the
* second slot is always empty).
*/
void sd_enable(SDState *card, bool enable);
#endif /* HW_SDCARD_LEGACY_H */