2 * Volume Management Device driver
3 * Copyright (c) 2015, Intel Corporation.
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms and conditions of the GNU General Public License,
7 * version 2, as published by the Free Software Foundation.
9 * This program is distributed in the hope it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
15 #include <linux/device.h>
16 #include <linux/interrupt.h>
17 #include <linux/irq.h>
18 #include <linux/kernel.h>
19 #include <linux/module.h>
20 #include <linux/msi.h>
21 #include <linux/pci.h>
22 #include <linux/rculist.h>
23 #include <linux/rcupdate.h>
25 #include <asm/irqdomain.h>
26 #include <asm/device.h>
28 #include <asm/msidef.h>
35 * Lock for manipulating VMD IRQ lists.
37 static DEFINE_RAW_SPINLOCK(list_lock
);
40 * struct vmd_irq - private data to map driver IRQ to the VMD shared vector
41 * @node: list item for parent traversal.
42 * @rcu: RCU callback item for freeing.
43 * @irq: back pointer to parent.
44 * @virq: the virtual IRQ value provided to the requesting driver.
46 * Every MSI/MSI-X IRQ requested for a device in a VMD domain will be mapped to
47 * a VMD IRQ using this structure.
50 struct list_head node
;
52 struct vmd_irq_list
*irq
;
57 * struct vmd_irq_list - list of driver requested IRQs mapping to a VMD vector
58 * @irq_list: the list of irq's the VMD one demuxes to.
59 * @count: number of child IRQs assigned to this vector; used to track
63 struct list_head irq_list
;
74 struct vmd_irq_list
*irqs
;
76 struct pci_sysdata sysdata
;
77 struct resource resources
[3];
78 struct irq_domain
*irq_domain
;
81 #ifdef CONFIG_X86_DEV_DMA_OPS
82 struct dma_map_ops dma_ops
;
83 struct dma_domain dma_domain
;
87 static inline struct vmd_dev
*vmd_from_bus(struct pci_bus
*bus
)
89 return container_of(bus
->sysdata
, struct vmd_dev
, sysdata
);
92 static inline unsigned int index_from_irqs(struct vmd_dev
*vmd
,
93 struct vmd_irq_list
*irqs
)
95 return irqs
- vmd
->irqs
;
99 * Drivers managing a device in a VMD domain allocate their own IRQs as before,
100 * but the MSI entry for the hardware it's driving will be programmed with a
101 * destination ID for the VMD MSI-X table. The VMD muxes interrupts in its
102 * domain into one of its own, and the VMD driver de-muxes these for the
103 * handlers sharing that VMD IRQ. The vmd irq_domain provides the operations
104 * and irq_chip to set this up.
106 static void vmd_compose_msi_msg(struct irq_data
*data
, struct msi_msg
*msg
)
108 struct vmd_irq
*vmdirq
= data
->chip_data
;
109 struct vmd_irq_list
*irq
= vmdirq
->irq
;
110 struct vmd_dev
*vmd
= irq_data_get_irq_handler_data(data
);
112 msg
->address_hi
= MSI_ADDR_BASE_HI
;
113 msg
->address_lo
= MSI_ADDR_BASE_LO
|
114 MSI_ADDR_DEST_ID(index_from_irqs(vmd
, irq
));
119 * We rely on MSI_FLAG_USE_DEF_CHIP_OPS to set the IRQ mask/unmask ops.
121 static void vmd_irq_enable(struct irq_data
*data
)
123 struct vmd_irq
*vmdirq
= data
->chip_data
;
126 raw_spin_lock_irqsave(&list_lock
, flags
);
127 list_add_tail_rcu(&vmdirq
->node
, &vmdirq
->irq
->irq_list
);
128 raw_spin_unlock_irqrestore(&list_lock
, flags
);
130 data
->chip
->irq_unmask(data
);
133 static void vmd_irq_disable(struct irq_data
*data
)
135 struct vmd_irq
*vmdirq
= data
->chip_data
;
138 data
->chip
->irq_mask(data
);
140 raw_spin_lock_irqsave(&list_lock
, flags
);
141 list_del_rcu(&vmdirq
->node
);
142 INIT_LIST_HEAD_RCU(&vmdirq
->node
);
143 raw_spin_unlock_irqrestore(&list_lock
, flags
);
147 * XXX: Stubbed until we develop acceptable way to not create conflicts with
148 * other devices sharing the same vector.
150 static int vmd_irq_set_affinity(struct irq_data
*data
,
151 const struct cpumask
*dest
, bool force
)
156 static struct irq_chip vmd_msi_controller
= {
158 .irq_enable
= vmd_irq_enable
,
159 .irq_disable
= vmd_irq_disable
,
160 .irq_compose_msi_msg
= vmd_compose_msi_msg
,
161 .irq_set_affinity
= vmd_irq_set_affinity
,
164 static irq_hw_number_t
vmd_get_hwirq(struct msi_domain_info
*info
,
165 msi_alloc_info_t
*arg
)
171 * XXX: We can be even smarter selecting the best IRQ once we solve the
174 static struct vmd_irq_list
*vmd_next_irq(struct vmd_dev
*vmd
, struct msi_desc
*desc
)
179 if (!desc
->msi_attrib
.is_msix
|| vmd
->msix_count
== 1)
180 return &vmd
->irqs
[0];
182 raw_spin_lock_irqsave(&list_lock
, flags
);
183 for (i
= 1; i
< vmd
->msix_count
; i
++)
184 if (vmd
->irqs
[i
].count
< vmd
->irqs
[best
].count
)
186 vmd
->irqs
[best
].count
++;
187 raw_spin_unlock_irqrestore(&list_lock
, flags
);
189 return &vmd
->irqs
[best
];
192 static int vmd_msi_init(struct irq_domain
*domain
, struct msi_domain_info
*info
,
193 unsigned int virq
, irq_hw_number_t hwirq
,
194 msi_alloc_info_t
*arg
)
196 struct msi_desc
*desc
= arg
->desc
;
197 struct vmd_dev
*vmd
= vmd_from_bus(msi_desc_to_pci_dev(desc
)->bus
);
198 struct vmd_irq
*vmdirq
= kzalloc(sizeof(*vmdirq
), GFP_KERNEL
);
199 unsigned int index
, vector
;
204 INIT_LIST_HEAD(&vmdirq
->node
);
205 vmdirq
->irq
= vmd_next_irq(vmd
, desc
);
207 index
= index_from_irqs(vmd
, vmdirq
->irq
);
208 vector
= pci_irq_vector(vmd
->dev
, index
);
210 irq_domain_set_info(domain
, virq
, vector
, info
->chip
, vmdirq
,
211 handle_untracked_irq
, vmd
, NULL
);
215 static void vmd_msi_free(struct irq_domain
*domain
,
216 struct msi_domain_info
*info
, unsigned int virq
)
218 struct vmd_irq
*vmdirq
= irq_get_chip_data(virq
);
223 /* XXX: Potential optimization to rebalance */
224 raw_spin_lock_irqsave(&list_lock
, flags
);
225 vmdirq
->irq
->count
--;
226 raw_spin_unlock_irqrestore(&list_lock
, flags
);
228 kfree_rcu(vmdirq
, rcu
);
231 static int vmd_msi_prepare(struct irq_domain
*domain
, struct device
*dev
,
232 int nvec
, msi_alloc_info_t
*arg
)
234 struct pci_dev
*pdev
= to_pci_dev(dev
);
235 struct vmd_dev
*vmd
= vmd_from_bus(pdev
->bus
);
237 if (nvec
> vmd
->msix_count
)
238 return vmd
->msix_count
;
240 memset(arg
, 0, sizeof(*arg
));
244 static void vmd_set_desc(msi_alloc_info_t
*arg
, struct msi_desc
*desc
)
249 static struct msi_domain_ops vmd_msi_domain_ops
= {
250 .get_hwirq
= vmd_get_hwirq
,
251 .msi_init
= vmd_msi_init
,
252 .msi_free
= vmd_msi_free
,
253 .msi_prepare
= vmd_msi_prepare
,
254 .set_desc
= vmd_set_desc
,
257 static struct msi_domain_info vmd_msi_domain_info
= {
258 .flags
= MSI_FLAG_USE_DEF_DOM_OPS
| MSI_FLAG_USE_DEF_CHIP_OPS
|
260 .ops
= &vmd_msi_domain_ops
,
261 .chip
= &vmd_msi_controller
,
264 #ifdef CONFIG_X86_DEV_DMA_OPS
266 * VMD replaces the requester ID with its own. DMA mappings for devices in a
267 * VMD domain need to be mapped for the VMD, not the device requiring
270 static struct device
*to_vmd_dev(struct device
*dev
)
272 struct pci_dev
*pdev
= to_pci_dev(dev
);
273 struct vmd_dev
*vmd
= vmd_from_bus(pdev
->bus
);
275 return &vmd
->dev
->dev
;
278 static struct dma_map_ops
*vmd_dma_ops(struct device
*dev
)
280 return get_dma_ops(to_vmd_dev(dev
));
283 static void *vmd_alloc(struct device
*dev
, size_t size
, dma_addr_t
*addr
,
284 gfp_t flag
, unsigned long attrs
)
286 return vmd_dma_ops(dev
)->alloc(to_vmd_dev(dev
), size
, addr
, flag
,
290 static void vmd_free(struct device
*dev
, size_t size
, void *vaddr
,
291 dma_addr_t addr
, unsigned long attrs
)
293 return vmd_dma_ops(dev
)->free(to_vmd_dev(dev
), size
, vaddr
, addr
,
297 static int vmd_mmap(struct device
*dev
, struct vm_area_struct
*vma
,
298 void *cpu_addr
, dma_addr_t addr
, size_t size
,
301 return vmd_dma_ops(dev
)->mmap(to_vmd_dev(dev
), vma
, cpu_addr
, addr
,
305 static int vmd_get_sgtable(struct device
*dev
, struct sg_table
*sgt
,
306 void *cpu_addr
, dma_addr_t addr
, size_t size
,
309 return vmd_dma_ops(dev
)->get_sgtable(to_vmd_dev(dev
), sgt
, cpu_addr
,
313 static dma_addr_t
vmd_map_page(struct device
*dev
, struct page
*page
,
314 unsigned long offset
, size_t size
,
315 enum dma_data_direction dir
,
318 return vmd_dma_ops(dev
)->map_page(to_vmd_dev(dev
), page
, offset
, size
,
322 static void vmd_unmap_page(struct device
*dev
, dma_addr_t addr
, size_t size
,
323 enum dma_data_direction dir
, unsigned long attrs
)
325 vmd_dma_ops(dev
)->unmap_page(to_vmd_dev(dev
), addr
, size
, dir
, attrs
);
328 static int vmd_map_sg(struct device
*dev
, struct scatterlist
*sg
, int nents
,
329 enum dma_data_direction dir
, unsigned long attrs
)
331 return vmd_dma_ops(dev
)->map_sg(to_vmd_dev(dev
), sg
, nents
, dir
, attrs
);
334 static void vmd_unmap_sg(struct device
*dev
, struct scatterlist
*sg
, int nents
,
335 enum dma_data_direction dir
, unsigned long attrs
)
337 vmd_dma_ops(dev
)->unmap_sg(to_vmd_dev(dev
), sg
, nents
, dir
, attrs
);
340 static void vmd_sync_single_for_cpu(struct device
*dev
, dma_addr_t addr
,
341 size_t size
, enum dma_data_direction dir
)
343 vmd_dma_ops(dev
)->sync_single_for_cpu(to_vmd_dev(dev
), addr
, size
, dir
);
346 static void vmd_sync_single_for_device(struct device
*dev
, dma_addr_t addr
,
347 size_t size
, enum dma_data_direction dir
)
349 vmd_dma_ops(dev
)->sync_single_for_device(to_vmd_dev(dev
), addr
, size
,
353 static void vmd_sync_sg_for_cpu(struct device
*dev
, struct scatterlist
*sg
,
354 int nents
, enum dma_data_direction dir
)
356 vmd_dma_ops(dev
)->sync_sg_for_cpu(to_vmd_dev(dev
), sg
, nents
, dir
);
359 static void vmd_sync_sg_for_device(struct device
*dev
, struct scatterlist
*sg
,
360 int nents
, enum dma_data_direction dir
)
362 vmd_dma_ops(dev
)->sync_sg_for_device(to_vmd_dev(dev
), sg
, nents
, dir
);
365 static int vmd_mapping_error(struct device
*dev
, dma_addr_t addr
)
367 return vmd_dma_ops(dev
)->mapping_error(to_vmd_dev(dev
), addr
);
370 static int vmd_dma_supported(struct device
*dev
, u64 mask
)
372 return vmd_dma_ops(dev
)->dma_supported(to_vmd_dev(dev
), mask
);
375 #ifdef ARCH_HAS_DMA_GET_REQUIRED_MASK
376 static u64
vmd_get_required_mask(struct device
*dev
)
378 return vmd_dma_ops(dev
)->get_required_mask(to_vmd_dev(dev
));
382 static void vmd_teardown_dma_ops(struct vmd_dev
*vmd
)
384 struct dma_domain
*domain
= &vmd
->dma_domain
;
386 if (get_dma_ops(&vmd
->dev
->dev
))
387 del_dma_domain(domain
);
390 #define ASSIGN_VMD_DMA_OPS(source, dest, fn) \
393 dest->fn = vmd_##fn; \
396 static void vmd_setup_dma_ops(struct vmd_dev
*vmd
)
398 const struct dma_map_ops
*source
= get_dma_ops(&vmd
->dev
->dev
);
399 struct dma_map_ops
*dest
= &vmd
->dma_ops
;
400 struct dma_domain
*domain
= &vmd
->dma_domain
;
402 domain
->domain_nr
= vmd
->sysdata
.domain
;
403 domain
->dma_ops
= dest
;
407 ASSIGN_VMD_DMA_OPS(source
, dest
, alloc
);
408 ASSIGN_VMD_DMA_OPS(source
, dest
, free
);
409 ASSIGN_VMD_DMA_OPS(source
, dest
, mmap
);
410 ASSIGN_VMD_DMA_OPS(source
, dest
, get_sgtable
);
411 ASSIGN_VMD_DMA_OPS(source
, dest
, map_page
);
412 ASSIGN_VMD_DMA_OPS(source
, dest
, unmap_page
);
413 ASSIGN_VMD_DMA_OPS(source
, dest
, map_sg
);
414 ASSIGN_VMD_DMA_OPS(source
, dest
, unmap_sg
);
415 ASSIGN_VMD_DMA_OPS(source
, dest
, sync_single_for_cpu
);
416 ASSIGN_VMD_DMA_OPS(source
, dest
, sync_single_for_device
);
417 ASSIGN_VMD_DMA_OPS(source
, dest
, sync_sg_for_cpu
);
418 ASSIGN_VMD_DMA_OPS(source
, dest
, sync_sg_for_device
);
419 ASSIGN_VMD_DMA_OPS(source
, dest
, mapping_error
);
420 ASSIGN_VMD_DMA_OPS(source
, dest
, dma_supported
);
421 #ifdef ARCH_HAS_DMA_GET_REQUIRED_MASK
422 ASSIGN_VMD_DMA_OPS(source
, dest
, get_required_mask
);
424 add_dma_domain(domain
);
426 #undef ASSIGN_VMD_DMA_OPS
428 static void vmd_teardown_dma_ops(struct vmd_dev
*vmd
) {}
429 static void vmd_setup_dma_ops(struct vmd_dev
*vmd
) {}
432 static char __iomem
*vmd_cfg_addr(struct vmd_dev
*vmd
, struct pci_bus
*bus
,
433 unsigned int devfn
, int reg
, int len
)
435 char __iomem
*addr
= vmd
->cfgbar
+
436 (bus
->number
<< 20) + (devfn
<< 12) + reg
;
438 if ((addr
- vmd
->cfgbar
) + len
>=
439 resource_size(&vmd
->dev
->resource
[VMD_CFGBAR
]))
446 * CPU may deadlock if config space is not serialized on some versions of this
447 * hardware, so all config space access is done under a spinlock.
449 static int vmd_pci_read(struct pci_bus
*bus
, unsigned int devfn
, int reg
,
452 struct vmd_dev
*vmd
= vmd_from_bus(bus
);
453 char __iomem
*addr
= vmd_cfg_addr(vmd
, bus
, devfn
, reg
, len
);
460 spin_lock_irqsave(&vmd
->cfg_lock
, flags
);
463 *value
= readb(addr
);
466 *value
= readw(addr
);
469 *value
= readl(addr
);
475 spin_unlock_irqrestore(&vmd
->cfg_lock
, flags
);
480 * VMD h/w converts non-posted config writes to posted memory writes. The
481 * read-back in this function forces the completion so it returns only after
482 * the config space was written, as expected.
484 static int vmd_pci_write(struct pci_bus
*bus
, unsigned int devfn
, int reg
,
487 struct vmd_dev
*vmd
= vmd_from_bus(bus
);
488 char __iomem
*addr
= vmd_cfg_addr(vmd
, bus
, devfn
, reg
, len
);
495 spin_lock_irqsave(&vmd
->cfg_lock
, flags
);
513 spin_unlock_irqrestore(&vmd
->cfg_lock
, flags
);
517 static struct pci_ops vmd_ops
= {
518 .read
= vmd_pci_read
,
519 .write
= vmd_pci_write
,
522 static void vmd_attach_resources(struct vmd_dev
*vmd
)
524 vmd
->dev
->resource
[VMD_MEMBAR1
].child
= &vmd
->resources
[1];
525 vmd
->dev
->resource
[VMD_MEMBAR2
].child
= &vmd
->resources
[2];
528 static void vmd_detach_resources(struct vmd_dev
*vmd
)
530 vmd
->dev
->resource
[VMD_MEMBAR1
].child
= NULL
;
531 vmd
->dev
->resource
[VMD_MEMBAR2
].child
= NULL
;
535 * VMD domains start at 0x1000 to not clash with ACPI _SEG domains.
537 static int vmd_find_free_domain(void)
540 struct pci_bus
*bus
= NULL
;
542 while ((bus
= pci_find_next_bus(bus
)) != NULL
)
543 domain
= max_t(int, domain
, pci_domain_nr(bus
));
547 static int vmd_enable_domain(struct vmd_dev
*vmd
)
549 struct pci_sysdata
*sd
= &vmd
->sysdata
;
550 struct resource
*res
;
553 LIST_HEAD(resources
);
555 res
= &vmd
->dev
->resource
[VMD_CFGBAR
];
556 vmd
->resources
[0] = (struct resource
) {
557 .name
= "VMD CFGBAR",
559 .end
= (resource_size(res
) >> 20) - 1,
560 .flags
= IORESOURCE_BUS
| IORESOURCE_PCI_FIXED
,
564 * If the window is below 4GB, clear IORESOURCE_MEM_64 so we can
565 * put 32-bit resources in the window.
567 * There's no hardware reason why a 64-bit window *couldn't*
568 * contain a 32-bit resource, but pbus_size_mem() computes the
569 * bridge window size assuming a 64-bit window will contain no
570 * 32-bit resources. __pci_assign_resource() enforces that
571 * artificial restriction to make sure everything will fit.
573 * The only way we could use a 64-bit non-prefechable MEMBAR is
574 * if its address is <4GB so that we can convert it to a 32-bit
575 * resource. To be visible to the host OS, all VMD endpoints must
576 * be initially configured by platform BIOS, which includes setting
577 * up these resources. We can assume the device is configured
578 * according to the platform needs.
580 res
= &vmd
->dev
->resource
[VMD_MEMBAR1
];
581 upper_bits
= upper_32_bits(res
->end
);
582 flags
= res
->flags
& ~IORESOURCE_SIZEALIGN
;
584 flags
&= ~IORESOURCE_MEM_64
;
585 vmd
->resources
[1] = (struct resource
) {
586 .name
= "VMD MEMBAR1",
593 res
= &vmd
->dev
->resource
[VMD_MEMBAR2
];
594 upper_bits
= upper_32_bits(res
->end
);
595 flags
= res
->flags
& ~IORESOURCE_SIZEALIGN
;
597 flags
&= ~IORESOURCE_MEM_64
;
598 vmd
->resources
[2] = (struct resource
) {
599 .name
= "VMD MEMBAR2",
600 .start
= res
->start
+ 0x2000,
606 sd
->domain
= vmd_find_free_domain();
610 sd
->node
= pcibus_to_node(vmd
->dev
->bus
);
612 vmd
->irq_domain
= pci_msi_create_irq_domain(NULL
, &vmd_msi_domain_info
,
614 if (!vmd
->irq_domain
)
617 pci_add_resource(&resources
, &vmd
->resources
[0]);
618 pci_add_resource(&resources
, &vmd
->resources
[1]);
619 pci_add_resource(&resources
, &vmd
->resources
[2]);
620 vmd
->bus
= pci_create_root_bus(&vmd
->dev
->dev
, 0, &vmd_ops
, sd
,
623 pci_free_resource_list(&resources
);
624 irq_domain_remove(vmd
->irq_domain
);
628 vmd_attach_resources(vmd
);
629 vmd_setup_dma_ops(vmd
);
630 dev_set_msi_domain(&vmd
->bus
->dev
, vmd
->irq_domain
);
631 pci_rescan_bus(vmd
->bus
);
633 WARN(sysfs_create_link(&vmd
->dev
->dev
.kobj
, &vmd
->bus
->dev
.kobj
,
634 "domain"), "Can't create symlink to domain\n");
638 static irqreturn_t
vmd_irq(int irq
, void *data
)
640 struct vmd_irq_list
*irqs
= data
;
641 struct vmd_irq
*vmdirq
;
644 list_for_each_entry_rcu(vmdirq
, &irqs
->irq_list
, node
)
645 generic_handle_irq(vmdirq
->virq
);
651 static int vmd_probe(struct pci_dev
*dev
, const struct pci_device_id
*id
)
656 if (resource_size(&dev
->resource
[VMD_CFGBAR
]) < (1 << 20))
659 vmd
= devm_kzalloc(&dev
->dev
, sizeof(*vmd
), GFP_KERNEL
);
664 err
= pcim_enable_device(dev
);
668 vmd
->cfgbar
= pcim_iomap(dev
, VMD_CFGBAR
, 0);
673 if (dma_set_mask_and_coherent(&dev
->dev
, DMA_BIT_MASK(64)) &&
674 dma_set_mask_and_coherent(&dev
->dev
, DMA_BIT_MASK(32)))
677 vmd
->msix_count
= pci_msix_vec_count(dev
);
678 if (vmd
->msix_count
< 0)
681 vmd
->msix_count
= pci_alloc_irq_vectors(dev
, 1, vmd
->msix_count
,
682 PCI_IRQ_MSIX
| PCI_IRQ_AFFINITY
);
683 if (vmd
->msix_count
< 0)
684 return vmd
->msix_count
;
686 vmd
->irqs
= devm_kcalloc(&dev
->dev
, vmd
->msix_count
, sizeof(*vmd
->irqs
),
691 for (i
= 0; i
< vmd
->msix_count
; i
++) {
692 INIT_LIST_HEAD(&vmd
->irqs
[i
].irq_list
);
693 err
= devm_request_irq(&dev
->dev
, pci_irq_vector(dev
, i
),
694 vmd_irq
, 0, "vmd", &vmd
->irqs
[i
]);
699 spin_lock_init(&vmd
->cfg_lock
);
700 pci_set_drvdata(dev
, vmd
);
701 err
= vmd_enable_domain(vmd
);
705 dev_info(&vmd
->dev
->dev
, "Bound to PCI domain %04x\n",
706 vmd
->sysdata
.domain
);
710 static void vmd_remove(struct pci_dev
*dev
)
712 struct vmd_dev
*vmd
= pci_get_drvdata(dev
);
714 vmd_detach_resources(vmd
);
715 pci_set_drvdata(dev
, NULL
);
716 sysfs_remove_link(&vmd
->dev
->dev
.kobj
, "domain");
717 pci_stop_root_bus(vmd
->bus
);
718 pci_remove_root_bus(vmd
->bus
);
719 vmd_teardown_dma_ops(vmd
);
720 irq_domain_remove(vmd
->irq_domain
);
724 static int vmd_suspend(struct device
*dev
)
726 struct pci_dev
*pdev
= to_pci_dev(dev
);
728 pci_save_state(pdev
);
732 static int vmd_resume(struct device
*dev
)
734 struct pci_dev
*pdev
= to_pci_dev(dev
);
736 pci_restore_state(pdev
);
740 static SIMPLE_DEV_PM_OPS(vmd_dev_pm_ops
, vmd_suspend
, vmd_resume
);
742 static const struct pci_device_id vmd_ids
[] = {
743 {PCI_DEVICE(PCI_VENDOR_ID_INTEL
, 0x201d),},
746 MODULE_DEVICE_TABLE(pci
, vmd_ids
);
748 static struct pci_driver vmd_drv
= {
752 .remove
= vmd_remove
,
754 .pm
= &vmd_dev_pm_ops
,
757 module_pci_driver(vmd_drv
);
759 MODULE_AUTHOR("Intel Corporation");
760 MODULE_LICENSE("GPL v2");
761 MODULE_VERSION("0.6");