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      1 /*
      2  * Copyright  2007 Intel Corporation
      3  *
      4  * Permission is hereby granted, free of charge, to any person obtaining a
      5  * copy of this software and associated documentation files (the "Software"),
      6  * to deal in the Software without restriction, including without limitation
      7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
      8  * and/or sell copies of the Software, and to permit persons to whom the
      9  * Software is furnished to do so, subject to the following conditions:
     10  *
     11  * The above copyright notice and this permission notice (including the next
     12  * paragraph) shall be included in all copies or substantial portions of the
     13  * Software.
     14  *
     15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
     16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
     17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
     18  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
     19  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
     20  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
     21  * SOFTWARE.
     22  *
     23  * Authors:
     24  *    Zhenyu Wang <zhenyu.z.wang (at) intel.com>
     25  *
     26  */
     27 #ifdef HAVE_CONFIG_H
     28 #include "config.h"
     29 #endif
     30 
     31 #define _INTEL_XVMC_SERVER_
     32 #include "i830.h"
     33 #include "i830_hwmc.h"
     34 
     35 struct intel_xvmc_driver *xvmc_driver;
     36 
     37 /* set global current driver for xvmc */
     38 static Bool intel_xvmc_set_driver(struct intel_xvmc_driver *d)
     39 {
     40     if (xvmc_driver) {
     41 	ErrorF("XvMC driver already set!\n");
     42 	return FALSE;
     43     } else
     44 	xvmc_driver = d;
     45     return TRUE;
     46 }
     47 
     48 /* check chip type and load xvmc driver */
     49 /* This must be first called! */
     50 Bool intel_xvmc_probe(ScrnInfoPtr pScrn)
     51 {
     52     I830Ptr pI830 = I830PTR(pScrn);
     53     Bool ret = FALSE;
     54 
     55     if (!pI830->XvMCEnabled)
     56 	return FALSE;
     57 
     58     if (pI830->use_drm_mode &&
     59 	    (IS_I915G(pI830) || IS_I915GM(pI830)))
     60 	return FALSE;
     61 
     62     if (IS_I9XX(pI830)) {
     63 	if (IS_I915(pI830))
     64 	    ret = intel_xvmc_set_driver(&i915_xvmc_driver);
     65 	else if (IS_G4X(pI830) || IS_IGDNG(pI830))
     66 	    ret = intel_xvmc_set_driver(&vld_xvmc_driver);
     67 	else
     68 	    ret = intel_xvmc_set_driver(&i965_xvmc_driver);
     69     } else {
     70 	ErrorF("Your chipset doesn't support XvMC.\n");
     71 	return FALSE;
     72     }
     73     return TRUE;
     74 }
     75 
     76 void intel_xvmc_finish(ScrnInfoPtr pScrn)
     77 {
     78     if (!xvmc_driver)
     79 	return;
     80     (*xvmc_driver->fini)(pScrn);
     81 }
     82 
     83 Bool intel_xvmc_driver_init(ScreenPtr pScreen, XF86VideoAdaptorPtr xv_adaptor)
     84 {
     85     ScrnInfoPtr pScrn = xf86Screens[pScreen->myNum];
     86     I830Ptr pI830 = I830PTR(pScrn);
     87     struct drm_i915_setparam sp;
     88     int ret;
     89 
     90     if (!xvmc_driver) {
     91 	ErrorF("Failed to probe XvMC driver.\n");
     92 	return FALSE;
     93     }
     94 
     95     if (!(*xvmc_driver->init)(pScrn, xv_adaptor)) {
     96 	ErrorF("XvMC driver initialize failed.\n");
     97 	return FALSE;
     98     }
     99 
    100     /* Currently XvMC uses batchbuffer */
    101     sp.param = I915_SETPARAM_ALLOW_BATCHBUFFER;
    102     sp.value = 1;
    103     ret = drmCommandWrite(pI830->drmSubFD, DRM_I915_SETPARAM,
    104                           &sp, sizeof(sp));
    105     if (ret == 0)
    106         return TRUE;
    107 
    108     return FALSE;
    109 }
    110 
    111 Bool intel_xvmc_screen_init(ScreenPtr pScreen)
    112 {
    113     ScrnInfoPtr pScrn = xf86Screens[pScreen->myNum];
    114     I830Ptr pI830 = I830PTR(pScrn);
    115     char buf[64];
    116 
    117     if (!xvmc_driver)
    118 	return FALSE;
    119 
    120     if (xf86XvMCScreenInit(pScreen, 1, &xvmc_driver->adaptor)) {
    121 	xf86DrvMsg(pScrn->scrnIndex, X_INFO,
    122 		"[XvMC] %s driver initialized.\n",
    123 		xvmc_driver->name);
    124     } else {
    125 	intel_xvmc_finish(pScrn);
    126 	pI830->XvMCEnabled = FALSE;
    127 	xf86DrvMsg(pScrn->scrnIndex, X_INFO,
    128 		"[XvMC] Failed to initialize XvMC.\n");
    129 	return FALSE;
    130     }
    131 
    132     sprintf(buf, "pci:%04x:%02x:%02x.%d",
    133             pI830->PciInfo->domain,
    134             pI830->PciInfo->bus,
    135             pI830->PciInfo->dev,
    136             pI830->PciInfo->func);
    137 
    138     xf86XvMCRegisterDRInfo(pScreen, INTEL_XVMC_LIBNAME,
    139                            buf,
    140                            INTEL_XVMC_MAJOR, INTEL_XVMC_MINOR, INTEL_XVMC_PATCHLEVEL);
    141     return TRUE;
    142 }
    143 
    144 Bool intel_xvmc_init_batch(ScrnInfoPtr pScrn)
    145 {
    146     I830Ptr pI830 = I830PTR(pScrn);
    147     int size = KB(64);
    148 
    149     if (!i830_allocate_xvmc_buffer(pScrn, "[XvMC] batch buffer",
    150                                    &(xvmc_driver->batch), size,
    151                                    ALIGN_BOTH_ENDS))
    152         return FALSE;
    153 
    154     if (drmAddMap(pI830->drmSubFD,
    155                   (drm_handle_t)(xvmc_driver->batch->offset+pI830->LinearAddr),
    156                   xvmc_driver->batch->size, DRM_AGP, 0,
    157                   &xvmc_driver->batch_handle) < 0) {
    158         xf86DrvMsg(pScrn->scrnIndex, X_ERROR,
    159                    "[drm] drmAddMap(batchbuffer_handle) failed!\n");
    160         return FALSE;
    161     }
    162     return TRUE;
    163 }
    164 
    165 void intel_xvmc_fini_batch(ScrnInfoPtr pScrn)
    166 {
    167     I830Ptr pI830 = I830PTR(pScrn);
    168 
    169     if (xvmc_driver->batch_handle) {
    170         drmRmMap(pI830->drmSubFD, xvmc_driver->batch_handle);
    171         xvmc_driver->batch_handle = 0;
    172     }
    173     if (xvmc_driver->batch) {
    174         i830_free_xvmc_buffer(pScrn, xvmc_driver->batch);
    175         xvmc_driver->batch = NULL;
    176     }
    177 }
    178