search for: sring

...b/include/xen/interface/io/ring.h @@ -208,12 +208,12 @@ struct __name##_back_ring { \ #define RING_PUSH_REQUESTS(_r) do { \ - wmb(); /* back sees requests /before/ updated producer index */ \ + virt_wmb(); /* back sees requests /before/ updated producer index */ \ (_r)->sring->req_prod = (_r)->req_prod_pvt; \ } while (0) #define RING_PUSH_RESPONSES(_r) do { \ - wmb(); /* front sees responses /before/ updated producer index */ \ + virt_wmb(); /* front sees responses /before/ updated producer index */ \ (_r)->sring->rsp_prod = (_r)->rs...

...b/include/xen/interface/io/ring.h @@ -208,12 +208,12 @@ struct __name##_back_ring { \ #define RING_PUSH_REQUESTS(_r) do { \ - wmb(); /* back sees requests /before/ updated producer index */ \ + __smp_wmb(); /* back sees requests /before/ updated producer index */ \ (_r)->sring->req_prod = (_r)->req_prod_pvt; \ } while (0) #define RING_PUSH_RESPONSES(_r) do { \ - wmb(); /* front sees responses /before/ updated producer index */ \ + __smp_wmb(); /* front sees responses /before/ updated producer index */ \ (_r)->sring->rsp_prod = (_r)->r...

...TIVE)) { hregs->tx_ndptr = VIRT_TO_DMA(sp, td); hregs->tx_ctrl = HPC3_ETXCTRL_ACTIVE; @@ -740,8 +748,8 @@ static int sgiseeq_probe(struct platform_device *pdev) sp = netdev_priv(dev); /* Make private data page aligned */ - sr = dma_alloc_attrs(&pdev->dev, sizeof(*sp->srings), &sp->srings_dma, - GFP_KERNEL, DMA_ATTR_NON_CONSISTENT); + sr = dma_alloc_noncoherent(&pdev->dev, sizeof(*sp->srings), + &sp->srings_dma, DMA_BIDIRECTIONAL, GFP_KERNEL); if (!sr) { printk(KERN_ERR "Sgiseeq: Page alloc failed, aborting.\n"); err...

...; struct xenbus_device *xen_blkbk_xenbus(struct backend_info *be) { @@ -176,6 +176,83 @@ static int xen_blkif_map(struct xen_blkif *blkif, unsigned long shared_page, return 0; } +static int +xen_blkif_map_segring(struct xen_blkif *blkif, unsigned long shared_page) +{ + struct blkif_segment_sring *sring; + int err; + + err = xenbus_map_ring_valloc(blkif->be->dev, shared_page, + &blkif->blk_segring); + + if (err < 0) + return err; + + sring = (struct blkif_segment_sring *)blkif->blk_segring; + BACK_RING_INIT(&blkif->blk_segrings, sring, PAGE_SIZE); + + retu...

...- if (err) { - free_vm_area(blkif->blk_ring_area); - return err; - } + area = xenbus_map_ring_valloc(blkif->be->dev, ring_ref); + if (IS_ERR(area)) + return PTR_ERR(area); + blkif->blk_ring_area = area; switch (blkif->blk_protocol) { case BLKIF_PROTOCOL_NATIVE: { blkif_sring_t *sring; - sring = (blkif_sring_t *)blkif->blk_ring_area->addr; + sring = (blkif_sring_t *)area->addr; BACK_RING_INIT(&blkif->blk_rings.native, sring, PAGE_SIZE); break; } case BLKIF_PROTOCOL_X86_32: { blkif_x86_32_sring_t *sring_x86_32; - sring_x86_32 = (blkif_x8...

This patch series introduces the shared ring used by the front-end to pass request descriptors to tapdisk, as well as responses from tapdisk to the front-end. Requests from this ring end up in tapdisk''s standard request queue. When the tapback daemon detects that the front-end tries to connect to the back-end, it spawns a tapdisk and tells it to connect to the shared ring. The shared

...;be->dev, ring_ref, 1 << ring_order, + &blkif->blk_ring); if (err < 0) return err; @@ -140,21 +141,24 @@ static int xen_blkif_map(struct xen_blkif *blkif, unsigned long shared_page, { struct blkif_sring *sring; sring = (struct blkif_sring *)blkif->blk_ring; - BACK_RING_INIT(&blkif->blk_rings.native, sring, PAGE_SIZE); + BACK_RING_INIT(&blkif->blk_rings.native, sring, + PAGE_SIZE << ring_order);...

...;be->dev, ring_ref, 1 << ring_order, + &blkif->blk_ring); if (err < 0) return err; @@ -140,21 +141,24 @@ static int xen_blkif_map(struct xen_blkif *blkif, unsigned long shared_page, { struct blkif_sring *sring; sring = (struct blkif_sring *)blkif->blk_ring; - BACK_RING_INIT(&blkif->blk_rings.native, sring, PAGE_SIZE); + BACK_RING_INIT(&blkif->blk_rings.native, sring, + PAGE_SIZE << ring_order);...

...;be->dev, ring_ref, 1 << ring_order, + &blkif->blk_ring); if (err < 0) return err; @@ -140,21 +141,24 @@ static int xen_blkif_map(struct xen_blkif *blkif, unsigned long shared_page, { struct blkif_sring *sring; sring = (struct blkif_sring *)blkif->blk_ring; - BACK_RING_INIT(&blkif->blk_rings.native, sring, PAGE_SIZE); + BACK_RING_INIT(&blkif->blk_rings.native, sring, + PAGE_SIZE << ring_order);...

...gso_prefix) - max += MAX_SKB_FRAGS + 1; /* extra_info + frags */ - - return max; -} - int xen_netbk_rx_ring_full(struct xenvif *vif) { - RING_IDX peek = vif->rx_req_cons_peek; - RING_IDX needed = max_required_rx_slots(vif); + RING_IDX peek = vif->rx_req_cons_peek; - return ((vif->rx.sring->req_prod - peek) < needed) || - ((vif->rx.rsp_prod_pvt + XEN_NETIF_RX_RING_SIZE - peek) < needed); + return ((vif->rx.sring->req_prod < peek) || + (vif->rx.rsp_prod_pvt + XEN_NETIF_RX_RING_SIZE < peek)); } int xen_netbk_must_stop_queue(struct xenvif *vif) @@...

...TIVE)) { hregs->tx_ndptr = VIRT_TO_DMA(sp, td); hregs->tx_ctrl = HPC3_ETXCTRL_ACTIVE; @@ -740,8 +748,8 @@ static int sgiseeq_probe(struct platform_device *pdev) sp = netdev_priv(dev); /* Make private data page aligned */ - sr = dma_alloc_attrs(&pdev->dev, sizeof(*sp->srings), &sp->srings_dma, - GFP_KERNEL, DMA_ATTR_NON_CONSISTENT); + sr = dma_alloc_noncoherent(&pdev->dev, sizeof(*sp->srings), + &sp->srings_dma, DMA_BIDIRECTIONAL, GFP_KERNEL); if (!sr) { printk(KERN_ERR "Sgiseeq: Page alloc failed, aborting.\n"); err...

hi. trying to understand the idea behind _notify in #define RING_PUSH_REQUESTS_AND_CHECK_NOTIFY(_r, _notify) do { \ RING_IDX __old = (_r)->sring->req_prod; \ RING_IDX __new = (_r)->req_prod_pvt; \ wmb(); /* back sees requests /before/ updated producer index */ \ (_r)->sring->req_prod = __new; \ mb(); /* back sees new reque...

...9bbb5d45b6 100644 --- a/drivers/net/ethernet/seeq/sgiseeq.c +++ b/drivers/net/ethernet/seeq/sgiseeq.c @@ -740,8 +740,8 @@ static int sgiseeq_probe(struct platform_device *pdev) sp = netdev_priv(dev); /* Make private data page aligned */ - sr = dma_alloc_attrs(&pdev->dev, sizeof(*sp->srings), &sp->srings_dma, - GFP_KERNEL, DMA_ATTR_NON_CONSISTENT); + sr = dma_alloc_pages(&pdev->dev, sizeof(*sp->srings), &sp->srings_dma, + DMA_BIDIRECTIONAL, GFP_KERNEL); if (!sr) { printk(KERN_ERR "Sgiseeq: Page alloc failed, aborting.\n"); err =...

This is really trying to cleanup some virt code, as suggested by Peter, who said > You could of course go fix that instead of mutilating things into > sort-of functional state. This work is needed for virtio, so it's probably easiest to merge it through my tree - is this fine by everyone? Arnd, if you agree, could you ack this please? Note to arch maintainers: please don't

This is really trying to cleanup some virt code, as suggested by Peter, who said > You could of course go fix that instead of mutilating things into > sort-of functional state. This work is needed for virtio, so it's probably easiest to merge it through my tree - is this fine by everyone? Arnd, if you agree, could you ack this please? Note to arch maintainers: please don't

...ird stuff. I have a Kirk IP600 connecting to * with 2 handsets. The weird thing is that for incoming calls the handset that is put second as my dialstring, never rings. This is my dial string: exten => 666666666,4,Dial(${PHONE1}&${DECT1}&${DECT2}),25,tm) Where DECT1 & DECT2 are srings for SCCP/phonenr If i specify DECT2 first and DECT1 second then DECT1 doesn't ring. I did not see this behaviour on a non-bristuffed install of asterisk, both phones worked as expected (same config files but on a box with an X100P). The message on the console is : Jan 16 22:10:15 NOTICE[50...

Changes since v1: - replaced my asm-generic patch with an equivalent patch already in tip - add wrappers with virt_ prefix for better code annotation, as suggested by David Miller - dropped XXX in patch names as this makes vger choke, Cc all relevant mailing lists on all patches (not personal email, as the list becomes too long then) I parked this in vhost tree for now, but the

Changes since v1: - replaced my asm-generic patch with an equivalent patch already in tip - add wrappers with virt_ prefix for better code annotation, as suggested by David Miller - dropped XXX in patch names as this makes vger choke, Cc all relevant mailing lists on all patches (not personal email, as the list becomes too long then) I parked this in vhost tree for now, but the

...e list with work to do. */ vif = poll_net_schedule_list(netbk); + /* + * This can sometimes happen because the test of + * list_empty(net_schedule_list) at the top of the + * loop is unlocked. Just go back and have another + * look. + */ if (!vif) continue; + if (vif->tx.sring->req_prod - vif->tx.req_cons > + XEN_NETIF_TX_RING_SIZE) { + netdev_err(vif->dev, + "Impossible number of requests. " + "req_prod %d, req_cons %d, size %ld\n", + vif->tx.sring->req_prod, vif->tx.req_cons, + XEN_NETIF_TX_RING_SI...

...gt;rx_irq)) { + unbind_from_irqhandler(info->tx_irq, info); + unbind_from_irqhandler(info->rx_irq, info); + } + info->tx_evtchn = info->rx_evtchn = 0; + info->tx_irq = info->rx_irq = 0; /* End access and free the pages */ xennet_end_access(info->tx_ring_ref, info->tx.sring); @@ -1503,12 +1528,82 @@ static int xen_net_read_mac(struct xenbus_device *dev, u8 mac[]) return 0; } +static int setup_netfront_single(struct netfront_info *info) +{ + int err; + + err = xenbus_alloc_evtchn(info->xbdev, &info->tx_evtchn); + if (err < 0) + goto fail; + + err = b...