From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:34451) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1eYuTh-0007AQ-6a for qemu-devel@nongnu.org; Tue, 09 Jan 2018 09:02:10 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1eYuTb-00019O-LD for qemu-devel@nongnu.org; Tue, 09 Jan 2018 09:02:09 -0500 From: Peter Maydell Date: Tue, 9 Jan 2018 14:01:52 +0000 Message-Id: <1515506513-31961-4-git-send-email-peter.maydell@linaro.org> In-Reply-To: <1515506513-31961-1-git-send-email-peter.maydell@linaro.org> References: <1515506513-31961-1-git-send-email-peter.maydell@linaro.org> Subject: [Qemu-devel] [PATCH 3/4] hw/sd/ssi-sd: Reset SD card on controller reset List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-arm@nongnu.org, qemu-devel@nongnu.org Cc: patches@linaro.org, qemu-stable@nongnu.org, =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= Since ssi-sd is still using the legacy SD card API, the SD card created by sd_init() is not plugged into any bus. This means that the controller has to reset it manually. Failing to do this mostly didn't affect the guest since the guest typically does a programmed SD card reset as part of its SD controller driver initialization, but meant that migration failed because it's only in sd_reset() that we set up the wpgrps_size field. In the case of sd-ssi, we have to implement an entire reset function since there wasn't one previously, and that requires a QOM cast macro that got omitted when this device was QOMified. Cc: qemu-stable@nongnu.org Signed-off-by: Peter Maydell --- hw/sd/ssi-sd.c | 24 +++++++++++++++++++++++- 1 file changed, 23 insertions(+), 1 deletion(-) diff --git a/hw/sd/ssi-sd.c b/hw/sd/ssi-sd.c index 24001dc..30d2a87 100644 --- a/hw/sd/ssi-sd.c +++ b/hw/sd/ssi-sd.c @@ -50,6 +50,9 @@ typedef struct { SDState *sd; } ssi_sd_state; +#define TYPE_SSI_SD "ssi-sd" +#define SSI_SD(obj) OBJECT_CHECK(ssi_sd_state, (obj), TYPE_SSI_SD) + /* State word bits. */ #define SSI_SDR_LOCKED 0x0001 #define SSI_SDR_WP_ERASE 0x0002 @@ -251,6 +254,24 @@ static void ssi_sd_realize(SSISlave *d, Error **errp) } } +static void ssi_sd_reset(DeviceState *dev) +{ + ssi_sd_state *s = SSI_SD(dev); + + s->mode = SSI_SD_CMD; + s->cmd = 0; + memset(s->cmdarg, 0, sizeof(s->cmdarg)); + memset(s->response, 0, sizeof(s->response)); + s->arglen = 0; + s->response_pos = 0; + s->stopping = 0; + + /* Since we're still using the legacy SD API the card is not plugged + * into any bus, and we must reset it manually. + */ + device_reset(DEVICE(s->sd)); +} + static void ssi_sd_class_init(ObjectClass *klass, void *data) { DeviceClass *dc = DEVICE_CLASS(klass); @@ -260,10 +281,11 @@ static void ssi_sd_class_init(ObjectClass *klass, void *data) k->transfer = ssi_sd_transfer; k->cs_polarity = SSI_CS_LOW; dc->vmsd = &vmstate_ssi_sd; + dc->reset = ssi_sd_reset; } static const TypeInfo ssi_sd_info = { - .name = "ssi-sd", + .name = TYPE_SSI_SD, .parent = TYPE_SSI_SLAVE, .instance_size = sizeof(ssi_sd_state), .class_init = ssi_sd_class_init, -- 2.7.4