vm audit: add VM_DONTEXPAND to mmap for drivers that need it
[sfrench/cifs-2.6.git] / sound / usb / usx2y / usX2Yhwdep.c
index 0281a362857a2b1753af67eb2cfa872a4bfbca8c..1558a5c4094faebb589c9822a37182c837867c39 100644 (file)
@@ -20,7 +20,6 @@
  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  */
 
-#include <sound/driver.h>
 #include <linux/interrupt.h>
 #include <linux/usb.h>
 #include <sound/core.h>
 #include "usbusx2y.h"
 #include "usX2Yhwdep.h"
 
-int usX2Y_hwdep_pcm_new(snd_card_t* card);
+int usX2Y_hwdep_pcm_new(struct snd_card *card);
 
 
-static struct page * snd_us428ctls_vm_nopage(struct vm_area_struct *area, unsigned long address, int *type)
+static int snd_us428ctls_vm_fault(struct vm_area_struct *area,
+                                 struct vm_fault *vmf)
 {
        unsigned long offset;
        struct page * page;
        void *vaddr;
 
-       snd_printdd("ENTER, start %lXh, ofs %lXh, pgoff %ld, addr %lXh\n",
+       snd_printdd("ENTER, start %lXh, pgoff %ld\n",
                   area->vm_start,
-                  address - area->vm_start,
-                  (address - area->vm_start) >> PAGE_SHIFT,
-                  address);
+                  vmf->pgoff);
        
-       offset = area->vm_pgoff << PAGE_SHIFT;
-       offset += address - area->vm_start;
-       snd_assert((offset % PAGE_SIZE) == 0, return NOPAGE_OOM);
-       vaddr = (char*)((usX2Ydev_t*)area->vm_private_data)->us428ctls_sharedmem + offset;
+       offset = vmf->pgoff << PAGE_SHIFT;
+       vaddr = (char*)((struct usX2Ydev *)area->vm_private_data)->us428ctls_sharedmem + offset;
        page = virt_to_page(vaddr);
        get_page(page);
-       snd_printdd( "vaddr=%p made us428ctls_vm_nopage() return %p; offset=%lX\n", vaddr, page, offset);
+       vmf->page = page;
 
-       if (type)
-               *type = VM_FAULT_MINOR;
+       snd_printdd("vaddr=%p made us428ctls_vm_fault() page %p\n",
+                   vaddr, page);
 
-       return page;
+       return 0;
 }
 
 static struct vm_operations_struct us428ctls_vm_ops = {
-       .nopage = snd_us428ctls_vm_nopage,
+       .fault = snd_us428ctls_vm_fault,
 };
 
-static int snd_us428ctls_mmap(snd_hwdep_t * hw, struct file *filp, struct vm_area_struct *area)
+static int snd_us428ctls_mmap(struct snd_hwdep * hw, struct file *filp, struct vm_area_struct *area)
 {
        unsigned long   size = (unsigned long)(area->vm_end - area->vm_start);
-       usX2Ydev_t      *us428 = (usX2Ydev_t*)hw->private_data;
+       struct usX2Ydev *us428 = hw->private_data;
 
        // FIXME this hwdep interface is used twice: fpga download and mmap for controlling Lights etc. Maybe better using 2 hwdep devs?
        // so as long as the device isn't fully initialised yet we return -EBUSY here.
-       if (!(((usX2Ydev_t*)hw->private_data)->chip_status & USX2Y_STAT_CHIP_INIT))
+       if (!(us428->chip_status & USX2Y_STAT_CHIP_INIT))
                return -EBUSY;
 
        /* if userspace tries to mmap beyond end of our buffer, fail */ 
-        if (size > ((PAGE_SIZE - 1 + sizeof(us428ctls_sharedmem_t)) / PAGE_SIZE) * PAGE_SIZE) {
-               snd_printd( "%lu > %lu\n", size, (unsigned long)sizeof(us428ctls_sharedmem_t)); 
+        if (size > PAGE_ALIGN(sizeof(struct us428ctls_sharedmem))) {
+               snd_printd( "%lu > %lu\n", size, (unsigned long)sizeof(struct us428ctls_sharedmem)); 
                 return -EINVAL;
        }
 
        if (!us428->us428ctls_sharedmem) {
                init_waitqueue_head(&us428->us428ctls_wait_queue_head);
-               if(!(us428->us428ctls_sharedmem = snd_malloc_pages(sizeof(us428ctls_sharedmem_t), GFP_KERNEL)))
+               if(!(us428->us428ctls_sharedmem = snd_malloc_pages(sizeof(struct us428ctls_sharedmem), GFP_KERNEL)))
                        return -ENOMEM;
-               memset(us428->us428ctls_sharedmem, -1, sizeof(us428ctls_sharedmem_t));
+               memset(us428->us428ctls_sharedmem, -1, sizeof(struct us428ctls_sharedmem));
                us428->us428ctls_sharedmem->CtlSnapShotLast = -2;
        }
        area->vm_ops = &us428ctls_vm_ops;
-       area->vm_flags |= VM_RESERVED;
+       area->vm_flags |= VM_RESERVED | VM_DONTEXPAND;
        area->vm_private_data = hw->private_data;
        return 0;
 }
 
-static unsigned int snd_us428ctls_poll(snd_hwdep_t *hw, struct file *file, poll_table *wait)
+static unsigned int snd_us428ctls_poll(struct snd_hwdep *hw, struct file *file, poll_table *wait)
 {
        unsigned int    mask = 0;
-       usX2Ydev_t      *us428 = (usX2Ydev_t*)hw->private_data;
-       us428ctls_sharedmem_t *shm = us428->us428ctls_sharedmem;
+       struct usX2Ydev *us428 = hw->private_data;
+       struct us428ctls_sharedmem *shm = us428->us428ctls_sharedmem;
        if (us428->chip_status & USX2Y_STAT_CHIP_HUP)
                return POLLHUP;
 
@@ -110,26 +106,28 @@ static unsigned int snd_us428ctls_poll(snd_hwdep_t *hw, struct file *file, poll_
 }
 
 
-static int snd_usX2Y_hwdep_open(snd_hwdep_t *hw, struct file *file)
+static int snd_usX2Y_hwdep_open(struct snd_hwdep *hw, struct file *file)
 {
        return 0;
 }
 
-static int snd_usX2Y_hwdep_release(snd_hwdep_t *hw, struct file *file)
+static int snd_usX2Y_hwdep_release(struct snd_hwdep *hw, struct file *file)
 {
        return 0;
 }
 
-static int snd_usX2Y_hwdep_dsp_status(snd_hwdep_t *hw, snd_hwdep_dsp_status_t *info)
+static int snd_usX2Y_hwdep_dsp_status(struct snd_hwdep *hw,
+                                     struct snd_hwdep_dsp_status *info)
 {
        static char *type_ids[USX2Y_TYPE_NUMS] = {
                [USX2Y_TYPE_122] = "us122",
                [USX2Y_TYPE_224] = "us224",
                [USX2Y_TYPE_428] = "us428",
        };
+       struct usX2Ydev *us428 = hw->private_data;
        int id = -1;
 
-       switch (le16_to_cpu(((usX2Ydev_t*)hw->private_data)->chip.dev->descriptor.idProduct)) {
+       switch (le16_to_cpu(us428->chip.dev->descriptor.idProduct)) {
        case USB_ID_US122:
                id = USX2Y_TYPE_122;
                break;
@@ -144,35 +142,35 @@ static int snd_usX2Y_hwdep_dsp_status(snd_hwdep_t *hw, snd_hwdep_dsp_status_t *i
                return -ENODEV;
        strcpy(info->id, type_ids[id]);
        info->num_dsps = 2;             // 0: Prepad Data, 1: FPGA Code
-       if (((usX2Ydev_t*)hw->private_data)->chip_status & USX2Y_STAT_CHIP_INIT) 
+       if (us428->chip_status & USX2Y_STAT_CHIP_INIT)
                info->chip_ready = 1;
        info->version = USX2Y_DRIVER_VERSION; 
        return 0;
 }
 
 
-static int usX2Y_create_usbmidi(snd_card_t* card )
+static int usX2Y_create_usbmidi(struct snd_card *card)
 {
-       static snd_usb_midi_endpoint_info_t quirk_data_1 = {
-               .out_ep =0x06,
+       static struct snd_usb_midi_endpoint_info quirk_data_1 = {
+               .out_ep = 0x06,
                .in_ep = 0x06,
                .out_cables =   0x001,
                .in_cables =    0x001
        };
-       static snd_usb_audio_quirk_t quirk_1 = {
+       static struct snd_usb_audio_quirk quirk_1 = {
                .vendor_name =  "TASCAM",
                .product_name = NAME_ALLCAPS,
                .ifnum =        0,
                        .type = QUIRK_MIDI_FIXED_ENDPOINT,
                .data = &quirk_data_1
        };
-       static snd_usb_midi_endpoint_info_t quirk_data_2 = {
-               .out_ep =0x06,
+       static struct snd_usb_midi_endpoint_info quirk_data_2 = {
+               .out_ep = 0x06,
                .in_ep = 0x06,
                .out_cables =   0x003,
                .in_cables =    0x003
        };
-       static snd_usb_audio_quirk_t quirk_2 = {
+       static struct snd_usb_audio_quirk quirk_2 = {
                .vendor_name =  "TASCAM",
                .product_name = "US428",
                .ifnum =        0,
@@ -181,19 +179,21 @@ static int usX2Y_create_usbmidi(snd_card_t* card )
        };
        struct usb_device *dev = usX2Y(card)->chip.dev;
        struct usb_interface *iface = usb_ifnum_to_if(dev, 0);
-       snd_usb_audio_quirk_t *quirk = le16_to_cpu(dev->descriptor.idProduct) == USB_ID_US428 ? &quirk_2 : &quirk_1;
+       struct snd_usb_audio_quirk *quirk =
+               le16_to_cpu(dev->descriptor.idProduct) == USB_ID_US428 ?
+               &quirk_2 : &quirk_1;
 
        snd_printdd("usX2Y_create_usbmidi \n");
        return snd_usb_create_midi_interface(&usX2Y(card)->chip, iface, quirk);
 }
 
-static int usX2Y_create_alsa_devices(snd_card_t* card)
+static int usX2Y_create_alsa_devices(struct snd_card *card)
 {
        int err;
 
        do {
                if ((err = usX2Y_create_usbmidi(card)) < 0) {
-                       snd_printk("usX2Y_create_alsa_devices: usX2Y_create_usbmidi error %i \n", err);
+                       snd_printk(KERN_ERR "usX2Y_create_alsa_devices: usX2Y_create_usbmidi error %i \n", err);
                        break;
                }
                if ((err = usX2Y_audio_create(card)) < 0) 
@@ -207,9 +207,10 @@ static int usX2Y_create_alsa_devices(snd_card_t* card)
        return err;
 } 
 
-static int snd_usX2Y_hwdep_dsp_load(snd_hwdep_t *hw, snd_hwdep_dsp_image_t *dsp)
+static int snd_usX2Y_hwdep_dsp_load(struct snd_hwdep *hw,
+                                   struct snd_hwdep_dsp_image *dsp)
 {
-       usX2Ydev_t *priv = hw->private_data;
+       struct usX2Ydev *priv = hw->private_data;
        int     lret, err = -EINVAL;
        snd_printdd( "dsp_load %s\n", dsp->name);
 
@@ -224,7 +225,7 @@ static int snd_usX2Y_hwdep_dsp_load(snd_hwdep_t *hw, snd_hwdep_dsp_image_t *dsp)
                }
                err = usb_set_interface(dev, 0, 1);
                if (err)
-                       snd_printk("usb_set_interface error \n");
+                       snd_printk(KERN_ERR "usb_set_interface error \n");
                else
                        err = usb_bulk_msg(dev, usb_sndbulkpipe(dev, 2), buf, dsp->length, &lret, 6000);
                kfree(buf);
@@ -235,17 +236,17 @@ static int snd_usX2Y_hwdep_dsp_load(snd_hwdep_t *hw, snd_hwdep_dsp_image_t *dsp)
                msleep(250);                            // give the device some time
                err = usX2Y_AsyncSeq04_init(priv);
                if (err) {
-                       snd_printk("usX2Y_AsyncSeq04_init error \n");
+                       snd_printk(KERN_ERR "usX2Y_AsyncSeq04_init error \n");
                        return err;
                }
                err = usX2Y_In04_init(priv);
                if (err) {
-                       snd_printk("usX2Y_In04_init error \n");
+                       snd_printk(KERN_ERR "usX2Y_In04_init error \n");
                        return err;
                }
                err = usX2Y_create_alsa_devices(hw->card);
                if (err) {
-                       snd_printk("usX2Y_create_alsa_devices error %i \n", err);
+                       snd_printk(KERN_ERR "usX2Y_create_alsa_devices error %i \n", err);
                        snd_card_free(hw->card);
                        return err;
                }
@@ -256,10 +257,10 @@ static int snd_usX2Y_hwdep_dsp_load(snd_hwdep_t *hw, snd_hwdep_dsp_image_t *dsp)
 }
 
 
-int usX2Y_hwdep_new(snd_card_t* card, struct usb_device* device)
+int usX2Y_hwdep_new(struct snd_card *card, struct usb_device* device)
 {
        int err;
-       snd_hwdep_t *hw;
+       struct snd_hwdep *hw;
 
        if ((err = snd_hwdep_new(card, SND_USX2Y_LOADER_ID, 0, &hw)) < 0)
                return err;