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hw: Replace trivial drive_get_next() by drive_get() 

drive_get_next() is basically a bad idea.  It returns the "next" block
backend of a certain interface type.  "Next" means bus=0,unit=N, where
subsequent calls count N up from zero, per interface type.

This lets you define unit numbers implicitly by execution order.  If the
order changes, or new calls appear "in the middle", unit numbers change.
ABI break.  Hard to spot in review.

A number of machines connect just one backend with drive_get_next().
Change them to use drive_get() directly.  This makes the (zero) unit
number explicit in the code.

Cc: Beniamino Galvani <b.galvani@gmail.com>
Cc: Peter Maydell <peter.maydell@linaro.org>
Cc: Subbaraya Sundeep <sundeep.lkml@gmail.com>
Cc: Niek Linnenbank <nieklinnenbank@gmail.com>
Cc: Andrew Baumann <Andrew.Baumann@microsoft.com>
Cc: "Philippe Mathieu-Daudé" <f4bug@amsat.org>
Cc: Jean-Christophe Dubois <jcd@tribudubois.net>
Cc: Alistair Francis <Alistair.Francis@wdc.com>
Cc: Bin Meng <bin.meng@windriver.com>
Cc: Palmer Dabbelt <palmer@dabbelt.com>
Cc: Artyom Tarasenko <atar4qemu@gmail.com>
Cc: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Cc: Michael Tokarev <mjt@tls.msk.ru>
Cc: Laurent Vivier <laurent@vivier.eu>
Cc: qemu-arm@nongnu.org
Cc: qemu-riscv@nongnu.org
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20211117163409.3587705-3-armbru@redhat.com>
This commit is contained in:
Markus Armbruster 2021-11-17 17:33:58 +01:00
parent 36aa285f48
commit 64eaa82095
11 changed files with 12 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
hw/arm/cubieboard.c
View File

@ -81,7 +81,7 @@ static void cubieboard_init(MachineState *machine)
}
/* Retrieve SD bus */
di = drive_get_next(IF_SD);
di = drive_get(IF_SD, 0, 0);
blk = di ? blk_by_legacy_dinfo(di) : NULL;
bus = qdev_get_child_bus(DEVICE(a10), "sd-bus");

2
hw/arm/integratorcp.c
View File

@ -649,7 +649,7 @@ static void integratorcp_init(MachineState *machine)
qdev_get_gpio_in_named(icp, ICP_GPIO_MMC_WPROT, 0));
qdev_connect_gpio_out_named(dev, "card-inserted", 0,
qdev_get_gpio_in_named(icp, ICP_GPIO_MMC_CARDIN, 0));
dinfo = drive_get_next(IF_SD);
dinfo = drive_get(IF_SD, 0, 0);
if (dinfo) {
DeviceState *card;

2
hw/arm/msf2-som.c
View File

@ -45,7 +45,7 @@ static void emcraft_sf2_s2s010_init(MachineState *machine)
DeviceState *spi_flash;
MSF2State *soc;
MachineClass *mc = MACHINE_GET_CLASS(machine);
DriveInfo *dinfo = drive_get_next(IF_MTD);
DriveInfo *dinfo = drive_get(IF_MTD, 0, 0);
qemu_irq cs_line;
BusState *spi_bus;
MemoryRegion *sysmem = get_system_memory();

2
hw/arm/orangepi.c
View File

@ -85,7 +85,7 @@ static void orangepi_init(MachineState *machine)
qdev_realize(DEVICE(h3), NULL, &error_abort);
/* Retrieve SD bus */
di = drive_get_next(IF_SD);
di = drive_get(IF_SD, 0, 0);
blk = di ? blk_by_legacy_dinfo(di) : NULL;
bus = qdev_get_child_bus(DEVICE(h3), "sd-bus");

2
hw/arm/raspi.c
View File

@ -284,7 +284,7 @@ static void raspi_machine_init(MachineState *machine)
qdev_realize(DEVICE(&s->soc), NULL, &error_fatal);
/* Create and plug in the SD cards */
di = drive_get_next(IF_SD);
di = drive_get(IF_SD, 0, 0);
blk = di ? blk_by_legacy_dinfo(di) : NULL;
bus = qdev_get_child_bus(DEVICE(&s->soc), "sd-bus");
if (bus == NULL) {

2
hw/arm/realview.c
View File

@ -237,7 +237,7 @@ static void realview_init(MachineState *machine,
qemu_irq_invert(qdev_get_gpio_in(gpio2, 0)));
qdev_connect_gpio_out_named(dev, "card-read-only", 0, mmc_irq[0]);
qdev_connect_gpio_out_named(dev, "card-inserted", 0, mmc_irq[1]);
dinfo = drive_get_next(IF_SD);
dinfo = drive_get(IF_SD, 0, 0);
if (dinfo) {
DeviceState *card;

2
hw/arm/sabrelite.c
View File

@ -76,7 +76,7 @@ static void sabrelite_init(MachineState *machine)
if (spi_bus) {
DeviceState *flash_dev;
qemu_irq cs_line;
DriveInfo *dinfo = drive_get_next(IF_MTD);
DriveInfo *dinfo = drive_get(IF_MTD, 0, 0);
flash_dev = qdev_new("sst25vf016b");
if (dinfo) {

4
hw/misc/sifive_u_otp.c
View File

@ -209,9 +209,9 @@ static void sifive_u_otp_realize(DeviceState *dev, Error **errp)
TYPE_SIFIVE_U_OTP, SIFIVE_U_OTP_REG_SIZE);
sysbus_init_mmio(SYS_BUS_DEVICE(dev), &s->mmio);
dinfo = drive_get_next(IF_PFLASH);
dinfo = drive_get(IF_PFLASH, 0, 0);
if (!dinfo) {
dinfo = drive_get_next(IF_NONE);
dinfo = drive_get(IF_NONE, 0, 0);
if (dinfo) {
warn_report("using \"-drive if=none\" for the OTP is deprecated, "
"use \"-drive if=pflash\" instead.");

2
hw/riscv/microchip_pfsoc.c
View File

@ -458,7 +458,7 @@ static void microchip_icicle_kit_machine_init(MachineState *machine)
target_ulong firmware_end_addr, kernel_start_addr;
uint64_t kernel_entry;
uint32_t fdt_load_addr;
DriveInfo *dinfo = drive_get_next(IF_SD);
DriveInfo *dinfo = drive_get(IF_SD, 0, 0);
/* Sanity check on RAM size */
if (machine->ram_size < mc->default_ram_size) {

2
hw/riscv/sifive_u.c
View File

@ -672,7 +672,7 @@ static void sifive_u_machine_init(MachineState *machine)
/* Connect an SPI flash to SPI0 */
flash_dev = qdev_new("is25wp256");
dinfo = drive_get_next(IF_MTD);
dinfo = drive_get(IF_MTD, 0, 0);
if (dinfo) {
qdev_prop_set_drive_err(flash_dev, "drive",
blk_by_legacy_dinfo(dinfo),

2
hw/sparc64/niagara.c
View File

@ -98,7 +98,7 @@ static void add_rom_or_fail(const char *file, const hwaddr addr)
static void niagara_init(MachineState *machine)
{
NiagaraBoardState *s = g_new(NiagaraBoardState, 1);
DriveInfo *dinfo = drive_get_next(IF_PFLASH);
DriveInfo *dinfo = drive_get(IF_PFLASH, 0, 0);
MemoryRegion *sysmem = get_system_memory();
/* init CPUs */