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From: Max Gurtovoy <mgurtovoy@nvidia.com>
To: <alex.williamson@redhat.com>, <cohuck@redhat.com>,
	<kvm@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
	<jgg@nvidia.com>
Cc: <aviadye@nvidia.com>, <oren@nvidia.com>, <shahafs@nvidia.com>,
	<parav@nvidia.com>, <artemp@nvidia.com>, <kwankhede@nvidia.com>,
	<ACurrid@nvidia.com>, <cjia@nvidia.com>, <yishaih@nvidia.com>,
	<kevin.tian@intel.com>, <hch@infradead.org>,
	<targupta@nvidia.com>, <shameerali.kolothum.thodi@huawei.com>,
	<liulongfang@huawei.com>, <yan.y.zhao@intel.com>,
	Max Gurtovoy <mgurtovoy@nvidia.com>
Subject: [PATCH 07/11] vfio-pci: move igd initialization to vfio_pci.c
Date: Thu, 3 Jun 2021 19:08:05 +0300	[thread overview]
Message-ID: <20210603160809.15845-8-mgurtovoy@nvidia.com> (raw)
In-Reply-To: <20210603160809.15845-1-mgurtovoy@nvidia.com>

This is a preparation before splitting vfio_pci.ko to 2 drivers. Move
the vendor specific igd initialization from the core part to pci_driver
part.

Signed-off-by: Max Gurtovoy <mgurtovoy@nvidia.com>
---
 drivers/vfio/pci/vfio_pci.c      | 31 ++++++++++++++++++++-
 drivers/vfio/pci/vfio_pci_core.c | 46 +++++++++++---------------------
 drivers/vfio/pci/vfio_pci_core.h |  8 ++++++
 3 files changed, 54 insertions(+), 31 deletions(-)

diff --git a/drivers/vfio/pci/vfio_pci.c b/drivers/vfio/pci/vfio_pci.c
index 23a21ecbc674..850ea3a94e28 100644
--- a/drivers/vfio/pci/vfio_pci.c
+++ b/drivers/vfio/pci/vfio_pci.c
@@ -83,9 +83,38 @@ static bool vfio_pci_is_denylisted(struct pci_dev *pdev)
 	return true;
 }
 
+static int vfio_pci_open(struct vfio_device *core_vdev)
+{
+	struct vfio_pci_core_device *vdev =
+		container_of(core_vdev, struct vfio_pci_core_device, vdev);
+	struct pci_dev *pdev = vdev->pdev;
+	int ret;
+
+	lockdep_assert_held(&core_vdev->reflck->lock);
+
+	ret = vfio_pci_core_enable(vdev);
+	if (ret)
+		return ret;
+
+	if (vfio_pci_is_vga(pdev) &&
+	    pdev->vendor == PCI_VENDOR_ID_INTEL &&
+	    IS_ENABLED(CONFIG_VFIO_PCI_IGD)) {
+		ret = vfio_pci_igd_init(vdev);
+		if (ret && ret != -ENODEV) {
+			pci_warn(pdev, "Failed to setup Intel IGD regions\n");
+			vfio_pci_core_disable(vdev);
+			return ret;
+		}
+	}
+
+	vfio_pci_core_finish_enable(vdev);
+
+	return 0;
+}
+
 static const struct vfio_device_ops vfio_pci_ops = {
 	.name		= "vfio-pci",
-	.open		= vfio_pci_core_open,
+	.open		= vfio_pci_open,
 	.release	= vfio_pci_core_release,
 	.ioctl		= vfio_pci_core_ioctl,
 	.read		= vfio_pci_core_read,
diff --git a/drivers/vfio/pci/vfio_pci_core.c b/drivers/vfio/pci/vfio_pci_core.c
index 12d5392c78cc..39a3f18bbc08 100644
--- a/drivers/vfio/pci/vfio_pci_core.c
+++ b/drivers/vfio/pci/vfio_pci_core.c
@@ -91,11 +91,6 @@ static unsigned int vfio_pci_set_vga_decode(void *opaque, bool single_vga)
 	return decodes;
 }
 
-static inline bool vfio_pci_is_vga(struct pci_dev *pdev)
-{
-	return (pdev->class >> 8) == PCI_CLASS_DISPLAY_VGA;
-}
-
 static void vfio_pci_probe_mmaps(struct vfio_pci_core_device *vdev)
 {
 	struct resource *res;
@@ -165,7 +160,6 @@ static void vfio_pci_probe_mmaps(struct vfio_pci_core_device *vdev)
 }
 
 static void vfio_pci_try_bus_reset(struct vfio_pci_core_device *vdev);
-static void vfio_pci_disable(struct vfio_pci_core_device *vdev);
 static int vfio_pci_try_zap_and_vma_lock_cb(struct pci_dev *pdev, void *data);
 
 /*
@@ -250,7 +244,7 @@ int vfio_pci_set_power_state(struct vfio_pci_core_device *vdev, pci_power_t stat
 	return ret;
 }
 
-static int vfio_pci_enable(struct vfio_pci_core_device *vdev)
+int vfio_pci_core_enable(struct vfio_pci_core_device *vdev)
 {
 	struct pci_dev *pdev = vdev->pdev;
 	int ret;
@@ -319,26 +313,11 @@ static int vfio_pci_enable(struct vfio_pci_core_device *vdev)
 	if (!vfio_vga_disabled() && vfio_pci_is_vga(pdev))
 		vdev->has_vga = true;
 
-	if (vfio_pci_is_vga(pdev) &&
-	    pdev->vendor == PCI_VENDOR_ID_INTEL &&
-	    IS_ENABLED(CONFIG_VFIO_PCI_IGD)) {
-		ret = vfio_pci_igd_init(vdev);
-		if (ret && ret != -ENODEV) {
-			pci_warn(pdev, "Failed to setup Intel IGD regions\n");
-			goto disable_exit;
-		}
-	}
-
-	vfio_pci_probe_mmaps(vdev);
 
 	return 0;
-
-disable_exit:
-	vfio_pci_disable(vdev);
-	return ret;
 }
 
-static void vfio_pci_disable(struct vfio_pci_core_device *vdev)
+void vfio_pci_core_disable(struct vfio_pci_core_device *vdev)
 {
 	struct pci_dev *pdev = vdev->pdev;
 	struct vfio_pci_dummy_resource *dummy_res, *tmp;
@@ -481,7 +460,7 @@ void vfio_pci_core_release(struct vfio_device *core_vdev)
 
 	vfio_pci_vf_token_user_add(vdev, -1);
 	vfio_spapr_pci_eeh_release(vdev->pdev);
-	vfio_pci_disable(vdev);
+	vfio_pci_core_disable(vdev);
 
 	mutex_lock(&vdev->igate);
 	if (vdev->err_trigger) {
@@ -495,6 +474,13 @@ void vfio_pci_core_release(struct vfio_device *core_vdev)
 	mutex_unlock(&vdev->igate);
 }
 
+void vfio_pci_core_finish_enable(struct vfio_pci_core_device *vdev)
+{
+	vfio_pci_probe_mmaps(vdev);
+	vfio_spapr_pci_eeh_open(vdev->pdev);
+	vfio_pci_vf_token_user_add(vdev, 1);
+}
+
 int vfio_pci_core_open(struct vfio_device *core_vdev)
 {
 	struct vfio_pci_core_device *vdev =
@@ -503,13 +489,13 @@ int vfio_pci_core_open(struct vfio_device *core_vdev)
 
 	lockdep_assert_held(&core_vdev->reflck->lock);
 
-	ret = vfio_pci_enable(vdev);
+	ret = vfio_pci_core_enable(vdev);
 	if (ret)
-		goto error;
-	vfio_spapr_pci_eeh_open(vdev->pdev);
-	vfio_pci_vf_token_user_add(vdev, 1);
-error:
-	return ret;
+		return ret;
+
+	vfio_pci_core_finish_enable(vdev);
+
+	return 0;
 }
 
 static int vfio_pci_get_irq_count(struct vfio_pci_core_device *vdev, int irq_type)
diff --git a/drivers/vfio/pci/vfio_pci_core.h b/drivers/vfio/pci/vfio_pci_core.h
index 245862d5d6e4..406e934e23b2 100644
--- a/drivers/vfio/pci/vfio_pci_core.h
+++ b/drivers/vfio/pci/vfio_pci_core.h
@@ -227,5 +227,13 @@ int vfio_pci_core_mmap(struct vfio_device *core_vdev, struct vm_area_struct *vma
 void vfio_pci_core_request(struct vfio_device *core_vdev, unsigned int count);
 int vfio_pci_core_match(struct vfio_device *core_vdev, char *buf);
 int vfio_pci_core_reflck_attach(struct vfio_device *core_vdev);
+int vfio_pci_core_enable(struct vfio_pci_core_device *vdev);
+void vfio_pci_core_disable(struct vfio_pci_core_device *vdev);
+void vfio_pci_core_finish_enable(struct vfio_pci_core_device *vdev);
+
+static inline bool vfio_pci_is_vga(struct pci_dev *pdev)
+{
+	return (pdev->class >> 8) == PCI_CLASS_DISPLAY_VGA;
+}
 
 #endif /* VFIO_PCI_CORE_H */
-- 
2.21.0


  parent reply	other threads:[~2021-06-03 16:09 UTC|newest]

Thread overview: 46+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-06-03 16:07 [RFC PATCH v4 00/11] Introduce vfio-pci-core subsystem Max Gurtovoy
2021-06-03 16:07 ` [PATCH 01/11] vfio-pci: rename vfio_pci.c to vfio_pci_core.c Max Gurtovoy
2021-06-03 16:08 ` [PATCH 02/11] vfio-pci: rename vfio_pci_private.h to vfio_pci_core.h Max Gurtovoy
2021-06-03 16:08 ` [PATCH 03/11] vfio-pci: rename vfio_pci_device to vfio_pci_core_device Max Gurtovoy
2021-06-03 16:08 ` [PATCH 04/11] vfio-pci: rename ops functions to fit core namings Max Gurtovoy
2021-06-03 16:08 ` [PATCH 05/11] vfio-pci: include vfio header in vfio_pci_core.h Max Gurtovoy
2021-06-03 16:08 ` [PATCH 06/11] vfio-pci: introduce vfio_pci.c Max Gurtovoy
2021-06-03 16:08 ` Max Gurtovoy [this message]
2021-06-03 16:08 ` [PATCH 08/11] PCI: add flags field to pci_device_id structure Max Gurtovoy
2021-06-03 16:08 ` [PATCH 09/11] PCI: add matching checks for driver_override binding Max Gurtovoy
2021-06-08 21:26   ` Alex Williamson
2021-06-08 22:45     ` Jason Gunthorpe
2021-06-09  1:27       ` Alex Williamson
2021-06-09  9:26         ` Max Gurtovoy
2021-06-13  8:19         ` Max Gurtovoy
2021-06-14  5:40           ` Christoph Hellwig
2021-06-14  8:18             ` Max Gurtovoy
2021-06-14 15:27               ` Christoph Hellwig
2021-06-14 16:01                 ` Jason Gunthorpe
2021-06-14 16:15                   ` Christoph Hellwig
2021-06-14 16:33                     ` Jason Gunthorpe
2021-06-14 18:42           ` Alex Williamson
2021-06-14 23:12             ` Max Gurtovoy
2021-06-15 15:00               ` Alex Williamson
2021-06-15 15:04                 ` Jason Gunthorpe
2021-06-15 16:20                   ` Alex Williamson
2021-06-15 20:42                     ` Jason Gunthorpe
2021-06-15 21:59                       ` Alex Williamson
2021-06-15 23:00                         ` Jason Gunthorpe
2021-06-15 23:22                           ` Alex Williamson
2021-06-15 23:32                             ` Jason Gunthorpe
2021-06-16  0:22                               ` Alex Williamson
2021-06-16  0:34                                 ` Jason Gunthorpe
2021-06-16 23:28                                   ` Max Gurtovoy
2021-06-16 23:33                                     ` Jason Gunthorpe
2021-06-16 23:42                                       ` Max Gurtovoy
2021-06-16 23:44                                         ` Jason Gunthorpe
2021-06-16 23:51                                           ` Max Gurtovoy
2021-06-16 23:56                                             ` Jason Gunthorpe
2021-06-20 14:46                                               ` Max Gurtovoy
2021-06-03 16:08 ` [PATCH 10/11] vfio-pci: introduce vfio_pci_core subsystem driver Max Gurtovoy
2021-06-08 21:26   ` Alex Williamson
2021-06-09  9:29     ` Max Gurtovoy
2021-06-03 16:08 ` [PATCH 11/11] mlx5-vfio-pci: add new vfio_pci driver for mlx5 devices Max Gurtovoy
2021-07-30  7:53 ` [RFC PATCH v4 00/11] Introduce vfio-pci-core subsystem Shameerali Kolothum Thodi
2021-07-30 11:55   ` Jason Gunthorpe

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