[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] implement support for secondary consoles in the console backend
This patch adds support for secondary consoles in the console backend. Signed-off-by: Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx> --- diff --git a/hw/xen_console.c b/hw/xen_console.c index 27f809d..0d8f654 100644 --- a/hw/xen_console.c +++ b/hw/xen_console.c @@ -185,7 +185,10 @@ static int con_init(struct XenDevice *xendev) /* setup */ dom = xs_get_domain_path(xenstore, con->xendev.dom); - snprintf(con->console, sizeof(con->console), "%s/console", dom); + if (!xendev->dev) + snprintf(con->console, sizeof(con->console), "%s/console", dom); + else + snprintf(con->console, sizeof(con->console), "%s/device/console/%d", dom, xendev->dev); free(dom); type = xenstore_read_str(con->console, "type"); @@ -215,10 +218,15 @@ static int con_connect(struct XenDevice *xendev) if (xenstore_read_int(con->console, "limit", &limit) == 0) con->buffer.max_capacity = limit; - con->sring = xc_map_foreign_range(xen_xc, con->xendev.dom, - XC_PAGE_SIZE, - PROT_READ|PROT_WRITE, - con->ring_ref); + if (!xendev->dev) + con->sring = xc_map_foreign_range(xen_xc, con->xendev.dom, + XC_PAGE_SIZE, + PROT_READ|PROT_WRITE, + con->ring_ref); + else + con->sring = xc_gnttab_map_grant_ref(xendev->gnttabdev, con->xendev.dom, + con->ring_ref, + PROT_READ|PROT_WRITE); if (!con->sring) return -1; @@ -244,7 +252,10 @@ static void con_disconnect(struct XenDevice *xendev) xen_be_unbind_evtchn(&con->xendev); if (con->sring) { - munmap(con->sring, XC_PAGE_SIZE); + if (!xendev->dev) + munmap(con->sring, XC_PAGE_SIZE); + else + xc_gnttab_munmap(xendev->gnttabdev, con->sring, 1); con->sring = NULL; } } @@ -262,9 +273,10 @@ static void con_event(struct XenDevice *xendev) struct XenDevOps xen_console_ops = { .size = sizeof(struct XenConsole), - .flags = DEVOPS_FLAG_IGNORE_STATE, + .flags = DEVOPS_FLAG_IGNORE_STATE|DEVOPS_FLAG_NEED_GNTDEV, .init = con_init, .connect = con_connect, .event = con_event, .disconnect = con_disconnect, }; + _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel
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