From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1LOVUX-0007Jt-Qf for qemu-devel@nongnu.org; Sun, 18 Jan 2009 06:06:57 -0500 Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1LOVUU-0007Jg-6I for qemu-devel@nongnu.org; Sun, 18 Jan 2009 06:06:56 -0500 Received: from [199.232.76.173] (port=53073 helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1LOVUS-0007Jd-ON for qemu-devel@nongnu.org; Sun, 18 Jan 2009 06:06:53 -0500 Received: from mx2.redhat.com ([66.187.237.31]:40590) by monty-python.gnu.org with esmtp (Exim 4.60) (envelope-from ) id 1LOVUR-00066L-2Z for qemu-devel@nongnu.org; Sun, 18 Jan 2009 06:06:51 -0500 Received: from int-mx2.corp.redhat.com (int-mx2.corp.redhat.com [172.16.27.26]) by mx2.redhat.com (8.13.8/8.13.8) with ESMTP id n0IB6n10014046 for ; Sun, 18 Jan 2009 06:06:49 -0500 Received: from ns3.rdu.redhat.com (ns3.rdu.redhat.com [10.11.255.199]) by int-mx2.corp.redhat.com (8.13.1/8.13.1) with ESMTP id n0IB6o5x023360 for ; Sun, 18 Jan 2009 06:06:50 -0500 Received: from dhcp-1-237.tlv.redhat.com (dhcp-1-237.tlv.redhat.com [10.35.1.237]) by ns3.rdu.redhat.com (8.13.8/8.13.8) with ESMTP id n0IB6neU024121 for ; Sun, 18 Jan 2009 06:06:49 -0500 Date: Sun, 18 Jan 2009 13:05:09 +0200 From: Gleb Natapov Message-ID: <20090118110509.GG11299@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Subject: [Qemu-devel] [PATCH v3] Stop VM on ENOSPC error. Reply-To: qemu-devel@nongnu.org List-Id: qemu-devel.nongnu.org List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org And repeat last IDE command after VM restart. Signed-off-by: Gleb Natapov diff --git a/hw/ide.c b/hw/ide.c index 7dd41f7..cda6398 100644 --- a/hw/ide.c +++ b/hw/ide.c @@ -457,6 +457,8 @@ static inline int media_is_cd(IDEState *s) #define BM_STATUS_DMAING 0x01 #define BM_STATUS_ERROR 0x02 #define BM_STATUS_INT 0x04 +#define BM_STATUS_DMA_RETRY 0x08 +#define BM_STATUS_PIO_RETRY 0x10 #define BM_CMD_START 0x01 #define BM_CMD_READ 0x08 @@ -488,6 +490,8 @@ typedef struct BMDMAState { IDEState *ide_if; BlockDriverCompletionFunc *dma_cb; BlockDriverAIOCB *aiocb; + int64_t sector_num; + uint32_t nsector; } BMDMAState; typedef struct PCIIDEState { @@ -498,6 +502,7 @@ typedef struct PCIIDEState { } PCIIDEState; static void ide_dma_start(IDEState *s, BlockDriverCompletionFunc *dma_cb); +static void ide_dma_restart(IDEState *s); static void ide_atapi_cmd_read_dma_cb(void *opaque, int ret); static void padstr(char *str, const char *src, int len) @@ -991,8 +996,13 @@ static void ide_sector_write(IDEState *s) n = s->req_nb_sectors; ret = bdrv_write(s->bs, sector_num, s->io_buffer, n); if (ret != 0) { - ide_rw_error(s); - return; + if (ret == -ENOSPC) { + s->bmdma->ide_if = s; + s->bmdma->status |= BM_STATUS_PIO_RETRY; + vm_stop(0); + } else + ide_rw_error(s); + return; } s->nsector -= n; @@ -1024,6 +1034,20 @@ static void ide_sector_write(IDEState *s) } } +static void ide_dma_restart_cb(void *opaque, int running) +{ + BMDMAState *bm = opaque; + if (!running) + return; + if (bm->status & BM_STATUS_DMA_RETRY) { + bm->status &= ~BM_STATUS_DMA_RETRY; + ide_dma_restart(bm->ide_if); + } else if (bm->status & BM_STATUS_PIO_RETRY) { + bm->status &= ~BM_STATUS_PIO_RETRY; + ide_sector_write(bm->ide_if); + } +} + static void ide_write_dma_cb(void *opaque, int ret) { BMDMAState *bm = opaque; @@ -1032,8 +1056,12 @@ static void ide_write_dma_cb(void *opaque, int ret) int64_t sector_num; if (ret < 0) { - ide_dma_error(s); - return; + if (ret == -ENOSPC) { + bm->status |= BM_STATUS_DMA_RETRY; + vm_stop(0); + } else + ide_dma_error(s); + return; } n = s->io_buffer_size >> 9; @@ -2849,11 +2877,25 @@ static void ide_dma_start(IDEState *s, BlockDriverCompletionFunc *dma_cb) bm->cur_prd_last = 0; bm->cur_prd_addr = 0; bm->cur_prd_len = 0; + bm->sector_num = ide_get_sector(s); + bm->nsector = s->nsector; if (bm->status & BM_STATUS_DMAING) { bm->dma_cb(bm, 0); } } +static void ide_dma_restart(IDEState *s) +{ + BMDMAState *bm = s->bmdma; + ide_set_sector(s, bm->sector_num); + s->io_buffer_index = 0; + s->io_buffer_size = 0; + s->nsector = bm->nsector; + bm->cur_addr = bm->addr; + bm->dma_cb = ide_write_dma_cb; + ide_dma_start(s, bm->dma_cb); +} + static void ide_dma_cancel(BMDMAState *bm) { if (bm->status & BM_STATUS_DMAING) { @@ -3043,6 +3085,7 @@ static void bmdma_map(PCIDevice *pci_dev, int region_num, d->ide_if[2 * i].bmdma = bm; d->ide_if[2 * i + 1].bmdma = bm; bm->pci_dev = (PCIIDEState *)pci_dev; + qemu_add_vm_change_state_handler(ide_dma_restart_cb, bm); register_ioport_write(addr, 1, 1, bmdma_cmd_writeb, bm); @@ -3068,9 +3111,14 @@ static void pci_ide_save(QEMUFile* f, void *opaque) for(i = 0; i < 2; i++) { BMDMAState *bm = &d->bmdma[i]; + uint8_t ifidx; qemu_put_8s(f, &bm->cmd); qemu_put_8s(f, &bm->status); qemu_put_be32s(f, &bm->addr); + qemu_put_sbe64s(f, &bm->sector_num); + qemu_put_be32s(f, &bm->nsector); + ifidx = bm->ide_if ? bm->ide_if - d->ide_if : 0; + qemu_put_8s(f, &ifidx); /* XXX: if a transfer is pending, we do not save it yet */ } @@ -3094,7 +3142,7 @@ static int pci_ide_load(QEMUFile* f, void *opaque, int version_id) PCIIDEState *d = opaque; int ret, i; - if (version_id != 1) + if (version_id != 2) return -EINVAL; ret = pci_device_load(&d->dev, f); if (ret < 0) @@ -3102,9 +3150,14 @@ static int pci_ide_load(QEMUFile* f, void *opaque, int version_id) for(i = 0; i < 2; i++) { BMDMAState *bm = &d->bmdma[i]; + uint8_t ifidx; qemu_get_8s(f, &bm->cmd); qemu_get_8s(f, &bm->status); qemu_get_be32s(f, &bm->addr); + qemu_get_sbe64s(f, &bm->sector_num); + qemu_get_be32s(f, &bm->nsector); + qemu_get_8s(f, &ifidx); + bm->ide_if = &d->ide_if[ifidx]; /* XXX: if a transfer is pending, we do not save it yet */ } @@ -3212,7 +3265,7 @@ void pci_cmd646_ide_init(PCIBus *bus, BlockDriverState **hd_table, ide_init2(&d->ide_if[0], hd_table[0], hd_table[1], irq[0]); ide_init2(&d->ide_if[2], hd_table[2], hd_table[3], irq[1]); - register_savevm("ide", 0, 1, pci_ide_save, pci_ide_load, d); + register_savevm("ide", 0, 2, pci_ide_save, pci_ide_load, d); qemu_register_reset(cmd646_reset, d); cmd646_reset(d); } @@ -3269,7 +3322,7 @@ void pci_piix3_ide_init(PCIBus *bus, BlockDriverState **hd_table, int devfn, ide_init_ioport(&d->ide_if[0], 0x1f0, 0x3f6); ide_init_ioport(&d->ide_if[2], 0x170, 0x376); - register_savevm("ide", 0, 1, pci_ide_save, pci_ide_load, d); + register_savevm("ide", 0, 2, pci_ide_save, pci_ide_load, d); } /* hd_table must contain 4 block drivers */ @@ -3308,7 +3361,7 @@ void pci_piix4_ide_init(PCIBus *bus, BlockDriverState **hd_table, int devfn, ide_init_ioport(&d->ide_if[0], 0x1f0, 0x3f6); ide_init_ioport(&d->ide_if[2], 0x170, 0x376); - register_savevm("ide", 0, 1, pci_ide_save, pci_ide_load, d); + register_savevm("ide", 0, 2, pci_ide_save, pci_ide_load, d); } /***********************************************************/ -- Gleb.