2 * Driver for HP iLO/iLO2 management processor.
4 * Copyright (C) 2008 Hewlett-Packard Development Company, L.P.
5 * David Altobelli <david.altobelli@hp.com>
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as
9 * published by the Free Software Foundation.
11 #include <linux/kernel.h>
12 #include <linux/types.h>
13 #include <linux/module.h>
15 #include <linux/pci.h>
16 #include <linux/interrupt.h>
17 #include <linux/ioport.h>
18 #include <linux/device.h>
19 #include <linux/file.h>
20 #include <linux/cdev.h>
21 #include <linux/sched.h>
22 #include <linux/spinlock.h>
23 #include <linux/delay.h>
24 #include <linux/uaccess.h>
26 #include <linux/wait.h>
27 #include <linux/poll.h>
28 #include <linux/slab.h>
31 static struct class *ilo_class;
32 static unsigned int ilo_major;
33 static char ilo_hwdev[MAX_ILO_DEV];
35 static inline int get_entry_id(int entry)
37 return (entry & ENTRY_MASK_DESCRIPTOR) >> ENTRY_BITPOS_DESCRIPTOR;
40 static inline int get_entry_len(int entry)
42 return ((entry & ENTRY_MASK_QWORDS) >> ENTRY_BITPOS_QWORDS) << 3;
45 static inline int mk_entry(int id, int len)
47 int qlen = len & 7 ? (len >> 3) + 1 : len >> 3;
48 return id << ENTRY_BITPOS_DESCRIPTOR | qlen << ENTRY_BITPOS_QWORDS;
51 static inline int desc_mem_sz(int nr_entry)
53 return nr_entry << L2_QENTRY_SZ;
57 * FIFO queues, shared with hardware.
59 * If a queue has empty slots, an entry is added to the queue tail,
60 * and that entry is marked as occupied.
61 * Entries can be dequeued from the head of the list, when the device
62 * has marked the entry as consumed.
64 * Returns true on successful queue/dequeue, false on failure.
66 static int fifo_enqueue(struct ilo_hwinfo *hw, char *fifobar, int entry)
68 struct fifo *fifo_q = FIFOBARTOHANDLE(fifobar);
72 spin_lock_irqsave(&hw->fifo_lock, flags);
73 if (!(fifo_q->fifobar[(fifo_q->tail + 1) & fifo_q->imask]
75 fifo_q->fifobar[fifo_q->tail & fifo_q->imask] |=
76 (entry & ENTRY_MASK_NOSTATE) | fifo_q->merge;
80 spin_unlock_irqrestore(&hw->fifo_lock, flags);
85 static int fifo_dequeue(struct ilo_hwinfo *hw, char *fifobar, int *entry)
87 struct fifo *fifo_q = FIFOBARTOHANDLE(fifobar);
92 spin_lock_irqsave(&hw->fifo_lock, flags);
93 c = fifo_q->fifobar[fifo_q->head & fifo_q->imask];
94 if (c & ENTRY_MASK_C) {
96 *entry = c & ENTRY_MASK_NOSTATE;
98 fifo_q->fifobar[fifo_q->head & fifo_q->imask] =
103 spin_unlock_irqrestore(&hw->fifo_lock, flags);
108 static int fifo_check_recv(struct ilo_hwinfo *hw, char *fifobar)
110 struct fifo *fifo_q = FIFOBARTOHANDLE(fifobar);
115 spin_lock_irqsave(&hw->fifo_lock, flags);
116 c = fifo_q->fifobar[fifo_q->head & fifo_q->imask];
117 if (c & ENTRY_MASK_C)
119 spin_unlock_irqrestore(&hw->fifo_lock, flags);
124 static int ilo_pkt_enqueue(struct ilo_hwinfo *hw, struct ccb *ccb,
125 int dir, int id, int len)
131 fifobar = ccb->ccb_u1.send_fifobar;
133 fifobar = ccb->ccb_u3.recv_fifobar;
135 entry = mk_entry(id, len);
136 return fifo_enqueue(hw, fifobar, entry);
139 static int ilo_pkt_dequeue(struct ilo_hwinfo *hw, struct ccb *ccb,
140 int dir, int *id, int *len, void **pkt)
142 char *fifobar, *desc;
143 int entry = 0, pkt_id = 0;
147 fifobar = ccb->ccb_u1.send_fifobar;
148 desc = ccb->ccb_u2.send_desc;
150 fifobar = ccb->ccb_u3.recv_fifobar;
151 desc = ccb->ccb_u4.recv_desc;
154 ret = fifo_dequeue(hw, fifobar, &entry);
156 pkt_id = get_entry_id(entry);
160 *len = get_entry_len(entry);
162 *pkt = (void *)(desc + desc_mem_sz(pkt_id));
168 static int ilo_pkt_recv(struct ilo_hwinfo *hw, struct ccb *ccb)
170 char *fifobar = ccb->ccb_u3.recv_fifobar;
172 return fifo_check_recv(hw, fifobar);
175 static inline void doorbell_set(struct ccb *ccb)
177 iowrite8(1, ccb->ccb_u5.db_base);
180 static inline void doorbell_clr(struct ccb *ccb)
182 iowrite8(2, ccb->ccb_u5.db_base);
185 static inline int ctrl_set(int l2sz, int idxmask, int desclim)
187 int active = 0, go = 1;
188 return l2sz << CTRL_BITPOS_L2SZ |
189 idxmask << CTRL_BITPOS_FIFOINDEXMASK |
190 desclim << CTRL_BITPOS_DESCLIMIT |
191 active << CTRL_BITPOS_A |
195 static void ctrl_setup(struct ccb *ccb, int nr_desc, int l2desc_sz)
197 /* for simplicity, use the same parameters for send and recv ctrls */
198 ccb->send_ctrl = ctrl_set(l2desc_sz, nr_desc-1, nr_desc-1);
199 ccb->recv_ctrl = ctrl_set(l2desc_sz, nr_desc-1, nr_desc-1);
202 static inline int fifo_sz(int nr_entry)
204 /* size of a fifo is determined by the number of entries it contains */
205 return (nr_entry * sizeof(u64)) + FIFOHANDLESIZE;
208 static void fifo_setup(void *base_addr, int nr_entry)
210 struct fifo *fifo_q = base_addr;
213 /* set up an empty fifo */
217 fifo_q->nrents = nr_entry;
218 fifo_q->imask = nr_entry - 1;
219 fifo_q->merge = ENTRY_MASK_O;
221 for (i = 0; i < nr_entry; i++)
222 fifo_q->fifobar[i] = 0;
225 static void ilo_ccb_close(struct pci_dev *pdev, struct ccb_data *data)
227 struct ccb *driver_ccb = &data->driver_ccb;
228 struct ccb __iomem *device_ccb = data->mapped_ccb;
231 /* complicated dance to tell the hw we are stopping */
232 doorbell_clr(driver_ccb);
233 iowrite32(ioread32(&device_ccb->send_ctrl) & ~(1 << CTRL_BITPOS_G),
234 &device_ccb->send_ctrl);
235 iowrite32(ioread32(&device_ccb->recv_ctrl) & ~(1 << CTRL_BITPOS_G),
236 &device_ccb->recv_ctrl);
238 /* give iLO some time to process stop request */
239 for (retries = MAX_WAIT; retries > 0; retries--) {
240 doorbell_set(driver_ccb);
242 if (!(ioread32(&device_ccb->send_ctrl) & (1 << CTRL_BITPOS_A))
244 !(ioread32(&device_ccb->recv_ctrl) & (1 << CTRL_BITPOS_A)))
248 dev_err(&pdev->dev, "Closing, but controller still active\n");
250 /* clear the hw ccb */
251 memset_io(device_ccb, 0, sizeof(struct ccb));
253 /* free resources used to back send/recv queues */
254 pci_free_consistent(pdev, data->dma_size, data->dma_va, data->dma_pa);
257 static int ilo_ccb_setup(struct ilo_hwinfo *hw, struct ccb_data *data, int slot)
259 char *dma_va, *dma_pa;
260 struct ccb *driver_ccb, *ilo_ccb;
262 driver_ccb = &data->driver_ccb;
263 ilo_ccb = &data->ilo_ccb;
265 data->dma_size = 2 * fifo_sz(NR_QENTRY) +
266 2 * desc_mem_sz(NR_QENTRY) +
267 ILO_START_ALIGN + ILO_CACHE_SZ;
269 data->dma_va = pci_alloc_consistent(hw->ilo_dev, data->dma_size,
274 dma_va = (char *)data->dma_va;
275 dma_pa = (char *)data->dma_pa;
277 memset(dma_va, 0, data->dma_size);
279 dma_va = (char *)roundup((unsigned long)dma_va, ILO_START_ALIGN);
280 dma_pa = (char *)roundup((unsigned long)dma_pa, ILO_START_ALIGN);
283 * Create two ccb's, one with virt addrs, one with phys addrs.
284 * Copy the phys addr ccb to device shared mem.
286 ctrl_setup(driver_ccb, NR_QENTRY, L2_QENTRY_SZ);
287 ctrl_setup(ilo_ccb, NR_QENTRY, L2_QENTRY_SZ);
289 fifo_setup(dma_va, NR_QENTRY);
290 driver_ccb->ccb_u1.send_fifobar = dma_va + FIFOHANDLESIZE;
291 ilo_ccb->ccb_u1.send_fifobar = dma_pa + FIFOHANDLESIZE;
292 dma_va += fifo_sz(NR_QENTRY);
293 dma_pa += fifo_sz(NR_QENTRY);
295 dma_va = (char *)roundup((unsigned long)dma_va, ILO_CACHE_SZ);
296 dma_pa = (char *)roundup((unsigned long)dma_pa, ILO_CACHE_SZ);
298 fifo_setup(dma_va, NR_QENTRY);
299 driver_ccb->ccb_u3.recv_fifobar = dma_va + FIFOHANDLESIZE;
300 ilo_ccb->ccb_u3.recv_fifobar = dma_pa + FIFOHANDLESIZE;
301 dma_va += fifo_sz(NR_QENTRY);
302 dma_pa += fifo_sz(NR_QENTRY);
304 driver_ccb->ccb_u2.send_desc = dma_va;
305 ilo_ccb->ccb_u2.send_desc = dma_pa;
306 dma_pa += desc_mem_sz(NR_QENTRY);
307 dma_va += desc_mem_sz(NR_QENTRY);
309 driver_ccb->ccb_u4.recv_desc = dma_va;
310 ilo_ccb->ccb_u4.recv_desc = dma_pa;
312 driver_ccb->channel = slot;
313 ilo_ccb->channel = slot;
315 driver_ccb->ccb_u5.db_base = hw->db_vaddr + (slot << L2_DB_SIZE);
316 ilo_ccb->ccb_u5.db_base = NULL; /* hw ccb's doorbell is not used */
321 static void ilo_ccb_open(struct ilo_hwinfo *hw, struct ccb_data *data, int slot)
324 struct ccb *driver_ccb = &data->driver_ccb;
326 /* copy the ccb with physical addrs to device memory */
327 data->mapped_ccb = (struct ccb __iomem *)
328 (hw->ram_vaddr + (slot * ILOHW_CCB_SZ));
329 memcpy_toio(data->mapped_ccb, &data->ilo_ccb, sizeof(struct ccb));
331 /* put packets on the send and receive queues */
333 for (pkt_id = 0; pkt_id < NR_QENTRY; pkt_id++) {
334 ilo_pkt_enqueue(hw, driver_ccb, SENDQ, pkt_id, pkt_sz);
335 doorbell_set(driver_ccb);
338 pkt_sz = desc_mem_sz(1);
339 for (pkt_id = 0; pkt_id < NR_QENTRY; pkt_id++)
340 ilo_pkt_enqueue(hw, driver_ccb, RECVQ, pkt_id, pkt_sz);
342 /* the ccb is ready to use */
343 doorbell_clr(driver_ccb);
346 static int ilo_ccb_verify(struct ilo_hwinfo *hw, struct ccb_data *data)
349 struct ccb *driver_ccb = &data->driver_ccb;
351 /* make sure iLO is really handling requests */
352 for (i = MAX_WAIT; i > 0; i--) {
353 if (ilo_pkt_dequeue(hw, driver_ccb, SENDQ, &pkt_id, NULL, NULL))
359 dev_err(&hw->ilo_dev->dev, "Open could not dequeue a packet\n");
363 ilo_pkt_enqueue(hw, driver_ccb, SENDQ, pkt_id, 0);
364 doorbell_set(driver_ccb);
368 static inline int is_channel_reset(struct ccb *ccb)
370 /* check for this particular channel needing a reset */
371 return FIFOBARTOHANDLE(ccb->ccb_u1.send_fifobar)->reset;
374 static inline void set_channel_reset(struct ccb *ccb)
376 /* set a flag indicating this channel needs a reset */
377 FIFOBARTOHANDLE(ccb->ccb_u1.send_fifobar)->reset = 1;
380 static inline int get_device_outbound(struct ilo_hwinfo *hw)
382 return ioread32(&hw->mmio_vaddr[DB_OUT]);
385 static inline int is_db_reset(int db_out)
387 return db_out & (1 << DB_RESET);
390 static inline int is_device_reset(struct ilo_hwinfo *hw)
392 /* check for global reset condition */
393 return is_db_reset(get_device_outbound(hw));
396 static inline void clear_pending_db(struct ilo_hwinfo *hw, int clr)
398 iowrite32(clr, &hw->mmio_vaddr[DB_OUT]);
401 static inline void clear_device(struct ilo_hwinfo *hw)
403 /* clear the device (reset bits, pending channel entries) */
404 clear_pending_db(hw, -1);
407 static inline void ilo_enable_interrupts(struct ilo_hwinfo *hw)
409 iowrite8(ioread8(&hw->mmio_vaddr[DB_IRQ]) | 1, &hw->mmio_vaddr[DB_IRQ]);
412 static inline void ilo_disable_interrupts(struct ilo_hwinfo *hw)
414 iowrite8(ioread8(&hw->mmio_vaddr[DB_IRQ]) & ~1,
415 &hw->mmio_vaddr[DB_IRQ]);
418 static void ilo_set_reset(struct ilo_hwinfo *hw)
423 * Mapped memory is zeroed on ilo reset, so set a per ccb flag
424 * to indicate that this ccb needs to be closed and reopened.
426 for (slot = 0; slot < MAX_CCB; slot++) {
427 if (!hw->ccb_alloc[slot])
429 set_channel_reset(&hw->ccb_alloc[slot]->driver_ccb);
433 static ssize_t ilo_read(struct file *fp, char __user *buf,
434 size_t len, loff_t *off)
436 int err, found, cnt, pkt_id, pkt_len;
437 struct ccb_data *data = fp->private_data;
438 struct ccb *driver_ccb = &data->driver_ccb;
439 struct ilo_hwinfo *hw = data->ilo_hw;
442 if (is_channel_reset(driver_ccb)) {
444 * If the device has been reset, applications
445 * need to close and reopen all ccbs.
451 * This function is to be called when data is expected
452 * in the channel, and will return an error if no packet is found
453 * during the loop below. The sleep/retry logic is to allow
454 * applications to call read() immediately post write(),
455 * and give iLO some time to process the sent packet.
459 /* look for a received packet */
460 found = ilo_pkt_dequeue(hw, driver_ccb, RECVQ, &pkt_id,
466 } while (!found && cnt);
471 /* only copy the length of the received packet */
475 err = copy_to_user(buf, pkt, len);
477 /* return the received packet to the queue */
478 ilo_pkt_enqueue(hw, driver_ccb, RECVQ, pkt_id, desc_mem_sz(1));
480 return err ? -EFAULT : len;
483 static ssize_t ilo_write(struct file *fp, const char __user *buf,
484 size_t len, loff_t *off)
486 int err, pkt_id, pkt_len;
487 struct ccb_data *data = fp->private_data;
488 struct ccb *driver_ccb = &data->driver_ccb;
489 struct ilo_hwinfo *hw = data->ilo_hw;
492 if (is_channel_reset(driver_ccb))
495 /* get a packet to send the user command */
496 if (!ilo_pkt_dequeue(hw, driver_ccb, SENDQ, &pkt_id, &pkt_len, &pkt))
499 /* limit the length to the length of the packet */
503 /* on failure, set the len to 0 to return empty packet to the device */
504 err = copy_from_user(pkt, buf, len);
508 /* send the packet */
509 ilo_pkt_enqueue(hw, driver_ccb, SENDQ, pkt_id, len);
510 doorbell_set(driver_ccb);
512 return err ? -EFAULT : len;
515 static unsigned int ilo_poll(struct file *fp, poll_table *wait)
517 struct ccb_data *data = fp->private_data;
518 struct ccb *driver_ccb = &data->driver_ccb;
520 poll_wait(fp, &data->ccb_waitq, wait);
522 if (is_channel_reset(driver_ccb))
524 else if (ilo_pkt_recv(data->ilo_hw, driver_ccb))
525 return POLLIN | POLLRDNORM;
530 static int ilo_close(struct inode *ip, struct file *fp)
533 struct ccb_data *data;
534 struct ilo_hwinfo *hw;
537 slot = iminor(ip) % MAX_CCB;
538 hw = container_of(ip->i_cdev, struct ilo_hwinfo, cdev);
540 spin_lock(&hw->open_lock);
542 if (hw->ccb_alloc[slot]->ccb_cnt == 1) {
544 data = fp->private_data;
546 spin_lock_irqsave(&hw->alloc_lock, flags);
547 hw->ccb_alloc[slot] = NULL;
548 spin_unlock_irqrestore(&hw->alloc_lock, flags);
550 ilo_ccb_close(hw->ilo_dev, data);
554 hw->ccb_alloc[slot]->ccb_cnt--;
556 spin_unlock(&hw->open_lock);
561 static int ilo_open(struct inode *ip, struct file *fp)
564 struct ccb_data *data;
565 struct ilo_hwinfo *hw;
568 slot = iminor(ip) % MAX_CCB;
569 hw = container_of(ip->i_cdev, struct ilo_hwinfo, cdev);
571 /* new ccb allocation */
572 data = kzalloc(sizeof(*data), GFP_KERNEL);
576 spin_lock(&hw->open_lock);
578 /* each fd private_data holds sw/hw view of ccb */
579 if (hw->ccb_alloc[slot] == NULL) {
580 /* create a channel control block for this minor */
581 error = ilo_ccb_setup(hw, data, slot);
588 data->ccb_excl = fp->f_flags & O_EXCL;
590 init_waitqueue_head(&data->ccb_waitq);
592 /* write the ccb to hw */
593 spin_lock_irqsave(&hw->alloc_lock, flags);
594 ilo_ccb_open(hw, data, slot);
595 hw->ccb_alloc[slot] = data;
596 spin_unlock_irqrestore(&hw->alloc_lock, flags);
598 /* make sure the channel is functional */
599 error = ilo_ccb_verify(hw, data);
602 spin_lock_irqsave(&hw->alloc_lock, flags);
603 hw->ccb_alloc[slot] = NULL;
604 spin_unlock_irqrestore(&hw->alloc_lock, flags);
606 ilo_ccb_close(hw->ilo_dev, data);
614 if (fp->f_flags & O_EXCL || hw->ccb_alloc[slot]->ccb_excl) {
616 * The channel exists, and either this open
617 * or a previous open of this channel wants
622 hw->ccb_alloc[slot]->ccb_cnt++;
627 spin_unlock(&hw->open_lock);
630 fp->private_data = hw->ccb_alloc[slot];
635 static const struct file_operations ilo_fops = {
636 .owner = THIS_MODULE,
641 .release = ilo_close,
644 static irqreturn_t ilo_isr(int irq, void *data)
646 struct ilo_hwinfo *hw = data;
649 spin_lock(&hw->alloc_lock);
651 /* check for ccbs which have data */
652 pending = get_device_outbound(hw);
654 spin_unlock(&hw->alloc_lock);
658 if (is_db_reset(pending)) {
659 /* wake up all ccbs if the device was reset */
664 for (i = 0; i < MAX_CCB; i++) {
665 if (!hw->ccb_alloc[i])
667 if (pending & (1 << i))
668 wake_up_interruptible(&hw->ccb_alloc[i]->ccb_waitq);
671 /* clear the device of the channels that have been handled */
672 clear_pending_db(hw, pending);
674 spin_unlock(&hw->alloc_lock);
679 static void ilo_unmap_device(struct pci_dev *pdev, struct ilo_hwinfo *hw)
681 pci_iounmap(pdev, hw->db_vaddr);
682 pci_iounmap(pdev, hw->ram_vaddr);
683 pci_iounmap(pdev, hw->mmio_vaddr);
686 static int __devinit ilo_map_device(struct pci_dev *pdev, struct ilo_hwinfo *hw)
690 /* map the memory mapped i/o registers */
691 hw->mmio_vaddr = pci_iomap(pdev, 1, 0);
692 if (hw->mmio_vaddr == NULL) {
693 dev_err(&pdev->dev, "Error mapping mmio\n");
697 /* map the adapter shared memory region */
698 hw->ram_vaddr = pci_iomap(pdev, 2, MAX_CCB * ILOHW_CCB_SZ);
699 if (hw->ram_vaddr == NULL) {
700 dev_err(&pdev->dev, "Error mapping shared mem\n");
704 /* map the doorbell aperture */
705 hw->db_vaddr = pci_iomap(pdev, 3, MAX_CCB * ONE_DB_SIZE);
706 if (hw->db_vaddr == NULL) {
707 dev_err(&pdev->dev, "Error mapping doorbell\n");
713 pci_iounmap(pdev, hw->ram_vaddr);
715 pci_iounmap(pdev, hw->mmio_vaddr);
720 static void ilo_remove(struct pci_dev *pdev)
723 struct ilo_hwinfo *ilo_hw = pci_get_drvdata(pdev);
725 clear_device(ilo_hw);
727 minor = MINOR(ilo_hw->cdev.dev);
728 for (i = minor; i < minor + MAX_CCB; i++)
729 device_destroy(ilo_class, MKDEV(ilo_major, i));
731 cdev_del(&ilo_hw->cdev);
732 ilo_disable_interrupts(ilo_hw);
733 free_irq(pdev->irq, ilo_hw);
734 ilo_unmap_device(pdev, ilo_hw);
735 pci_release_regions(pdev);
736 pci_disable_device(pdev);
738 ilo_hwdev[(minor / MAX_CCB)] = 0;
741 static int __devinit ilo_probe(struct pci_dev *pdev,
742 const struct pci_device_id *ent)
744 int devnum, minor, start, error;
745 struct ilo_hwinfo *ilo_hw;
747 /* find a free range for device files */
748 for (devnum = 0; devnum < MAX_ILO_DEV; devnum++) {
749 if (ilo_hwdev[devnum] == 0) {
750 ilo_hwdev[devnum] = 1;
755 if (devnum == MAX_ILO_DEV) {
756 dev_err(&pdev->dev, "Error finding free device\n");
760 /* track global allocations for this device */
762 ilo_hw = kzalloc(sizeof(*ilo_hw), GFP_KERNEL);
766 ilo_hw->ilo_dev = pdev;
767 spin_lock_init(&ilo_hw->alloc_lock);
768 spin_lock_init(&ilo_hw->fifo_lock);
769 spin_lock_init(&ilo_hw->open_lock);
771 error = pci_enable_device(pdev);
775 pci_set_master(pdev);
777 error = pci_request_regions(pdev, ILO_NAME);
781 error = ilo_map_device(pdev, ilo_hw);
785 pci_set_drvdata(pdev, ilo_hw);
786 clear_device(ilo_hw);
788 error = request_irq(pdev->irq, ilo_isr, IRQF_SHARED, "hpilo", ilo_hw);
792 ilo_enable_interrupts(ilo_hw);
794 cdev_init(&ilo_hw->cdev, &ilo_fops);
795 ilo_hw->cdev.owner = THIS_MODULE;
796 start = devnum * MAX_CCB;
797 error = cdev_add(&ilo_hw->cdev, MKDEV(ilo_major, start), MAX_CCB);
799 dev_err(&pdev->dev, "Could not add cdev\n");
803 for (minor = 0 ; minor < MAX_CCB; minor++) {
805 dev = device_create(ilo_class, &pdev->dev,
806 MKDEV(ilo_major, minor), NULL,
807 "hpilo!d%dccb%d", devnum, minor);
809 dev_err(&pdev->dev, "Could not create files\n");
814 ilo_disable_interrupts(ilo_hw);
815 free_irq(pdev->irq, ilo_hw);
817 ilo_unmap_device(pdev, ilo_hw);
819 pci_release_regions(pdev);
821 pci_disable_device(pdev);
825 ilo_hwdev[devnum] = 0;
829 static struct pci_device_id ilo_devices[] = {
830 { PCI_DEVICE(PCI_VENDOR_ID_COMPAQ, 0xB204) },
831 { PCI_DEVICE(PCI_VENDOR_ID_HP, 0x3307) },
834 MODULE_DEVICE_TABLE(pci, ilo_devices);
836 static struct pci_driver ilo_driver = {
838 .id_table = ilo_devices,
840 .remove = __devexit_p(ilo_remove),
843 static int __init ilo_init(void)
848 ilo_class = class_create(THIS_MODULE, "iLO");
849 if (IS_ERR(ilo_class)) {
850 error = PTR_ERR(ilo_class);
854 error = alloc_chrdev_region(&dev, 0, MAX_OPEN, ILO_NAME);
858 ilo_major = MAJOR(dev);
860 error = pci_register_driver(&ilo_driver);
866 unregister_chrdev_region(dev, MAX_OPEN);
868 class_destroy(ilo_class);
873 static void __exit ilo_exit(void)
875 pci_unregister_driver(&ilo_driver);
876 unregister_chrdev_region(MKDEV(ilo_major, 0), MAX_OPEN);
877 class_destroy(ilo_class);
880 MODULE_VERSION("1.2");
881 MODULE_ALIAS(ILO_NAME);
882 MODULE_DESCRIPTION(ILO_NAME);
883 MODULE_AUTHOR("David Altobelli <david.altobelli@hp.com>");
884 MODULE_LICENSE("GPL v2");
886 module_init(ilo_init);
887 module_exit(ilo_exit);