From af9e40aa8f36e30e89f16323b3d341ee59309b7e Mon Sep 17 00:00:00 2001 From: Markus Armbruster Date: Mon, 23 Mar 2015 19:03:13 +0100 Subject: [PATCH] hw: Mark devices picking up block backends actively FIXME MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Drives defined with if!=none are for board initialization to wire up. Board code calls drive_get() or similar to find them, and creates devices with their qdev drive properties set accordingly. Except a few devices go on a fishing expedition for a suitable backend instead of exposing a drive property for board code to set: they call driver_get() or drive_get_next() in their realize() or init() method to implicitly connect to the "next" backend with a certain interface type. Picking up backends that way works when the devices are created by board code. But it's inappropriate for -device or device_add. Not only is this inconsistent with how the other block device models work (they connect to a backend explicitly identified by a "drive" property), it breaks when the "next" backend has been picked up by the board already. Example: $ qemu-system-arm -S -M connex -pflash flash.img -device ssi-sd Aborted (core dumped) Mark them with suitable FIXME comments. Cc: Andrzej Zaborowski Cc: Peter Crosthwaite Cc: "Andreas Färber" Cc: Michael Walle Signed-off-by: Markus Armbruster --- hw/arm/spitz.c | 1 + hw/block/m25p80.c | 1 + hw/isa/pc87312.c | 2 ++ hw/sd/milkymist-memcard.c | 1 + hw/sd/pl181.c | 1 + hw/sd/sdhci.c | 1 + hw/sd/ssi-sd.c | 1 + 7 files changed, 8 insertions(+) diff --git a/hw/arm/spitz.c b/hw/arm/spitz.c index a16831c2e5..da02932872 100644 --- a/hw/arm/spitz.c +++ b/hw/arm/spitz.c @@ -168,6 +168,7 @@ static int sl_nand_init(SysBusDevice *dev) DriveInfo *nand; s->ctl = 0; + /* FIXME use a qdev drive property instead of drive_get() */ nand = drive_get(IF_MTD, 0, 0); s->nand = nand_init(nand ? blk_by_legacy_dinfo(nand) : NULL, s->manf_id, s->chip_id); diff --git a/hw/block/m25p80.c b/hw/block/m25p80.c index ff1106b6c9..afe243b811 100644 --- a/hw/block/m25p80.c +++ b/hw/block/m25p80.c @@ -623,6 +623,7 @@ static int m25p80_init(SSISlave *ss) s->dirty_page = -1; s->storage = blk_blockalign(s->blk, s->size); + /* FIXME use a qdev drive property instead of drive_get_next() */ dinfo = drive_get_next(IF_MTD); if (dinfo) { diff --git a/hw/isa/pc87312.c b/hw/isa/pc87312.c index 40a11060a5..2849e8d367 100644 --- a/hw/isa/pc87312.c +++ b/hw/isa/pc87312.c @@ -319,11 +319,13 @@ static void pc87312_realize(DeviceState *dev, Error **errp) d = DEVICE(isa); qdev_prop_set_uint32(d, "iobase", get_fdc_iobase(s)); qdev_prop_set_uint32(d, "irq", 6); + /* FIXME use a qdev drive property instead of drive_get() */ drive = drive_get(IF_FLOPPY, 0, 0); if (drive != NULL) { qdev_prop_set_drive_nofail(d, "driveA", blk_by_legacy_dinfo(drive)); } + /* FIXME use a qdev drive property instead of drive_get() */ drive = drive_get(IF_FLOPPY, 0, 1); if (drive != NULL) { qdev_prop_set_drive_nofail(d, "driveB", diff --git a/hw/sd/milkymist-memcard.c b/hw/sd/milkymist-memcard.c index 9661eafac8..0cc53d937f 100644 --- a/hw/sd/milkymist-memcard.c +++ b/hw/sd/milkymist-memcard.c @@ -255,6 +255,7 @@ static int milkymist_memcard_init(SysBusDevice *dev) DriveInfo *dinfo; BlockBackend *blk; + /* FIXME use a qdev drive property instead of drive_get_next() */ dinfo = drive_get_next(IF_SD); blk = dinfo ? blk_by_legacy_dinfo(dinfo) : NULL; s->card = sd_init(blk, false); diff --git a/hw/sd/pl181.c b/hw/sd/pl181.c index e704b6e97a..bf37da63c3 100644 --- a/hw/sd/pl181.c +++ b/hw/sd/pl181.c @@ -490,6 +490,7 @@ static int pl181_init(SysBusDevice *sbd) sysbus_init_irq(sbd, &s->irq[0]); sysbus_init_irq(sbd, &s->irq[1]); qdev_init_gpio_out(dev, s->cardstatus, 2); + /* FIXME use a qdev drive property instead of drive_get_next() */ dinfo = drive_get_next(IF_SD); s->card = sd_init(dinfo ? blk_by_legacy_dinfo(dinfo) : NULL, false); if (s->card == NULL) { diff --git a/hw/sd/sdhci.c b/hw/sd/sdhci.c index 27b914aa94..f056c523dd 100644 --- a/hw/sd/sdhci.c +++ b/hw/sd/sdhci.c @@ -1146,6 +1146,7 @@ static void sdhci_initfn(SDHCIState *s) { DriveInfo *di; + /* FIXME use a qdev drive property instead of drive_get_next() */ di = drive_get_next(IF_SD); s->card = sd_init(di ? blk_by_legacy_dinfo(di) : NULL, false); if (s->card == NULL) { diff --git a/hw/sd/ssi-sd.c b/hw/sd/ssi-sd.c index a71fbca714..e4b2d4f83b 100644 --- a/hw/sd/ssi-sd.c +++ b/hw/sd/ssi-sd.c @@ -255,6 +255,7 @@ static int ssi_sd_init(SSISlave *d) DriveInfo *dinfo; s->mode = SSI_SD_CMD; + /* FIXME use a qdev drive property instead of drive_get_next() */ dinfo = drive_get_next(IF_SD); s->sd = sd_init(dinfo ? blk_by_legacy_dinfo(dinfo) : NULL, true); if (s->sd == NULL) { -- GitLab