diff options
author | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2015-09-08 01:01:14 -0300 |
---|---|---|
committer | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2015-09-08 01:01:14 -0300 |
commit | e5fd91f1ef340da553f7a79da9540c3db711c937 (patch) | |
tree | b11842027dc6641da63f4bcc524f8678263304a3 /drivers/virtio | |
parent | 2a9b0348e685a63d97486f6749622b61e9e3292f (diff) |
Linux-libre 4.2-gnu
Diffstat (limited to 'drivers/virtio')
-rw-r--r-- | drivers/virtio/virtio_input.c | 4 | ||||
-rw-r--r-- | drivers/virtio/virtio_mmio.c | 2 | ||||
-rw-r--r-- | drivers/virtio/virtio_pci_common.c | 10 | ||||
-rw-r--r-- | drivers/virtio/virtio_pci_common.h | 2 | ||||
-rw-r--r-- | drivers/virtio/virtio_pci_legacy.c | 13 | ||||
-rw-r--r-- | drivers/virtio/virtio_pci_modern.c | 24 |
6 files changed, 37 insertions, 18 deletions
diff --git a/drivers/virtio/virtio_input.c b/drivers/virtio/virtio_input.c index 60e2a1677..c96944b59 100644 --- a/drivers/virtio/virtio_input.c +++ b/drivers/virtio/virtio_input.c @@ -313,6 +313,7 @@ err_init_vq: static void virtinput_remove(struct virtio_device *vdev) { struct virtio_input *vi = vdev->priv; + void *buf; unsigned long flags; spin_lock_irqsave(&vi->lock, flags); @@ -320,6 +321,9 @@ static void virtinput_remove(struct virtio_device *vdev) spin_unlock_irqrestore(&vi->lock, flags); input_unregister_device(vi->idev); + vdev->config->reset(vdev); + while ((buf = virtqueue_detach_unused_buf(vi->sts)) != NULL) + kfree(buf); vdev->config->del_vqs(vdev); kfree(vi); } diff --git a/drivers/virtio/virtio_mmio.c b/drivers/virtio/virtio_mmio.c index 7a5e60dea..10189b5b6 100644 --- a/drivers/virtio/virtio_mmio.c +++ b/drivers/virtio/virtio_mmio.c @@ -691,7 +691,7 @@ static int vm_cmdline_get(char *buffer, const struct kernel_param *kp) return strlen(buffer) + 1; } -static struct kernel_param_ops vm_cmdline_param_ops = { +static const struct kernel_param_ops vm_cmdline_param_ops = { .set = vm_cmdline_set, .get = vm_cmdline_get, }; diff --git a/drivers/virtio/virtio_pci_common.c b/drivers/virtio/virtio_pci_common.c index eba1b7ac7..78f804af6 100644 --- a/drivers/virtio/virtio_pci_common.c +++ b/drivers/virtio/virtio_pci_common.c @@ -502,18 +502,11 @@ static int virtio_pci_probe(struct pci_dev *pci_dev, INIT_LIST_HEAD(&vp_dev->virtqueues); spin_lock_init(&vp_dev->lock); - /* Disable MSI/MSIX to bring device to a known good state. */ - pci_msi_off(pci_dev); - /* enable the device */ rc = pci_enable_device(pci_dev); if (rc) goto err_enable_device; - rc = pci_request_regions(pci_dev, "virtio-pci"); - if (rc) - goto err_request_regions; - if (force_legacy) { rc = virtio_pci_legacy_probe(vp_dev); /* Also try modern mode if we can't map BAR0 (no IO space). */ @@ -543,8 +536,6 @@ err_register: else virtio_pci_modern_remove(vp_dev); err_probe: - pci_release_regions(pci_dev); -err_request_regions: pci_disable_device(pci_dev); err_enable_device: kfree(vp_dev); @@ -562,7 +553,6 @@ static void virtio_pci_remove(struct pci_dev *pci_dev) else virtio_pci_modern_remove(vp_dev); - pci_release_regions(pci_dev); pci_disable_device(pci_dev); } diff --git a/drivers/virtio/virtio_pci_common.h b/drivers/virtio/virtio_pci_common.h index 28ee4e56b..b976d968e 100644 --- a/drivers/virtio/virtio_pci_common.h +++ b/drivers/virtio/virtio_pci_common.h @@ -75,6 +75,8 @@ struct virtio_pci_device { /* Multiply queue_notify_off by this value. (non-legacy mode). */ u32 notify_offset_multiplier; + int modern_bars; + /* Legacy only field */ /* the IO mapping for the PCI config space */ void __iomem *ioaddr; diff --git a/drivers/virtio/virtio_pci_legacy.c b/drivers/virtio/virtio_pci_legacy.c index 256a5278a..48bc9797e 100644 --- a/drivers/virtio/virtio_pci_legacy.c +++ b/drivers/virtio/virtio_pci_legacy.c @@ -215,6 +215,7 @@ static const struct virtio_config_ops virtio_pci_config_ops = { int virtio_pci_legacy_probe(struct virtio_pci_device *vp_dev) { struct pci_dev *pci_dev = vp_dev->pci_dev; + int rc; /* We only own devices >= 0x1000 and <= 0x103f: leave the rest. */ if (pci_dev->device < 0x1000 || pci_dev->device > 0x103f) @@ -226,9 +227,14 @@ int virtio_pci_legacy_probe(struct virtio_pci_device *vp_dev) return -ENODEV; } + rc = pci_request_region(pci_dev, 0, "virtio-pci-legacy"); + if (rc) + return rc; + + rc = -ENOMEM; vp_dev->ioaddr = pci_iomap(pci_dev, 0, 0); if (!vp_dev->ioaddr) - return -ENOMEM; + goto err_iomap; vp_dev->isr = vp_dev->ioaddr + VIRTIO_PCI_ISR; @@ -246,6 +252,10 @@ int virtio_pci_legacy_probe(struct virtio_pci_device *vp_dev) vp_dev->del_vq = del_vq; return 0; + +err_iomap: + pci_release_region(pci_dev, 0); + return rc; } void virtio_pci_legacy_remove(struct virtio_pci_device *vp_dev) @@ -253,4 +263,5 @@ void virtio_pci_legacy_remove(struct virtio_pci_device *vp_dev) struct pci_dev *pci_dev = vp_dev->pci_dev; pci_iounmap(pci_dev, vp_dev->ioaddr); + pci_release_region(pci_dev, 0); } diff --git a/drivers/virtio/virtio_pci_modern.c b/drivers/virtio/virtio_pci_modern.c index e88e0997a..8e5cf194c 100644 --- a/drivers/virtio/virtio_pci_modern.c +++ b/drivers/virtio/virtio_pci_modern.c @@ -499,7 +499,7 @@ static const struct virtio_config_ops virtio_pci_config_ops = { * Returns offset of the capability, or 0. */ static inline int virtio_pci_find_capability(struct pci_dev *dev, u8 cfg_type, - u32 ioresource_types) + u32 ioresource_types, int *bars) { int pos; @@ -520,8 +520,10 @@ static inline int virtio_pci_find_capability(struct pci_dev *dev, u8 cfg_type, if (type == cfg_type) { if (pci_resource_len(dev, bar) && - pci_resource_flags(dev, bar) & ioresource_types) + pci_resource_flags(dev, bar) & ioresource_types) { + *bars |= (1 << bar); return pos; + } } } return 0; @@ -617,7 +619,8 @@ int virtio_pci_modern_probe(struct virtio_pci_device *vp_dev) /* check for a common config: if not, use legacy mode (bar 0). */ common = virtio_pci_find_capability(pci_dev, VIRTIO_PCI_CAP_COMMON_CFG, - IORESOURCE_IO | IORESOURCE_MEM); + IORESOURCE_IO | IORESOURCE_MEM, + &vp_dev->modern_bars); if (!common) { dev_info(&pci_dev->dev, "virtio_pci: leaving for legacy driver\n"); @@ -626,9 +629,11 @@ int virtio_pci_modern_probe(struct virtio_pci_device *vp_dev) /* If common is there, these should be too... */ isr = virtio_pci_find_capability(pci_dev, VIRTIO_PCI_CAP_ISR_CFG, - IORESOURCE_IO | IORESOURCE_MEM); + IORESOURCE_IO | IORESOURCE_MEM, + &vp_dev->modern_bars); notify = virtio_pci_find_capability(pci_dev, VIRTIO_PCI_CAP_NOTIFY_CFG, - IORESOURCE_IO | IORESOURCE_MEM); + IORESOURCE_IO | IORESOURCE_MEM, + &vp_dev->modern_bars); if (!isr || !notify) { dev_err(&pci_dev->dev, "virtio_pci: missing capabilities %i/%i/%i\n", @@ -640,7 +645,13 @@ int virtio_pci_modern_probe(struct virtio_pci_device *vp_dev) * device-specific configuration. */ device = virtio_pci_find_capability(pci_dev, VIRTIO_PCI_CAP_DEVICE_CFG, - IORESOURCE_IO | IORESOURCE_MEM); + IORESOURCE_IO | IORESOURCE_MEM, + &vp_dev->modern_bars); + + err = pci_request_selected_regions(pci_dev, vp_dev->modern_bars, + "virtio-pci-modern"); + if (err) + return err; err = -EINVAL; vp_dev->common = map_capability(pci_dev, common, @@ -727,4 +738,5 @@ void virtio_pci_modern_remove(struct virtio_pci_device *vp_dev) pci_iounmap(pci_dev, vp_dev->notify_base); pci_iounmap(pci_dev, vp_dev->isr); pci_iounmap(pci_dev, vp_dev->common); + pci_release_selected_regions(pci_dev, vp_dev->modern_bars); } |