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Diffstat (limited to 'pvr-source/services4/3rdparty/dc_nohw/dc_nohw_linux.c')
| -rw-r--r-- | pvr-source/services4/3rdparty/dc_nohw/dc_nohw_linux.c | 376 |
1 files changed, 376 insertions, 0 deletions
diff --git a/pvr-source/services4/3rdparty/dc_nohw/dc_nohw_linux.c b/pvr-source/services4/3rdparty/dc_nohw/dc_nohw_linux.c new file mode 100644 index 0000000..2f603ea --- /dev/null +++ b/pvr-source/services4/3rdparty/dc_nohw/dc_nohw_linux.c @@ -0,0 +1,376 @@ +/*************************************************************************/ /*! +@Title Dummy 3rd party driver linux specific declarations. +@Copyright Copyright (c) Imagination Technologies Ltd. All Rights Reserved +@License Dual MIT/GPLv2 + +The contents of this file are subject to the MIT license as set out below. + +Permission is hereby granted, free of charge, to any person obtaining a copy +of this software and associated documentation files (the "Software"), to deal +in the Software without restriction, including without limitation the rights +to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +copies of the Software, and to permit persons to whom the Software is +furnished to do so, subject to the following conditions: + +The above copyright notice and this permission notice shall be included in +all copies or substantial portions of the Software. + +Alternatively, the contents of this file may be used under the terms of +the GNU General Public License Version 2 ("GPL") in which case the provisions +of GPL are applicable instead of those above. + +If you wish to allow use of your version of this file only under the terms of +GPL, and not to allow others to use your version of this file under the terms +of the MIT license, indicate your decision by deleting the provisions above +and replace them with the notice and other provisions required by GPL as set +out in the file called "GPL-COPYING" included in this distribution. If you do +not delete the provisions above, a recipient may use your version of this file +under the terms of either the MIT license or GPL. + +This License is also included in this distribution in the file called +"MIT-COPYING". + +EXCEPT AS OTHERWISE STATED IN A NEGOTIATED AGREEMENT: (A) THE SOFTWARE IS +PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING +BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR +PURPOSE AND NONINFRINGEMENT; AND (B) IN NO EVENT SHALL THE AUTHORS OR +COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER +IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN +CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +*/ /**************************************************************************/ + +/************************************************************************** + The 3rd party driver is a specification of an API to integrate the + IMG PowerVR Services driver with 3rd Party display hardware. + It is NOT a specification for a display controller driver, rather a + specification to extend the API for a pre-existing driver for the display hardware. + + The 3rd party driver interface provides IMG PowerVR client drivers (e.g. PVR2D) + with an API abstraction of the system's underlying display hardware, allowing + the client drivers to indirectly control the display hardware and access its + associated memory. + + Functions of the API include + + - query primary surface attributes (width, height, stride, pixel format, + CPU physical and virtual address) + - swap/flip chain creation and subsequent query of surface attributes + - asynchronous display surface flipping, taking account of asynchronous + read (flip) and write (render) operations to the display surface + + Note: having queried surface attributes the client drivers are able to map + the display memory to any IMG PowerVR Services device by calling + PVRSRVMapDeviceClassMemory with the display surface handle. + + This code is intended to be an example of how a pre-existing display driver + may be extended to support the 3rd Party Display interface to + PowerVR Services - IMG is not providing a display driver implementation + **************************************************************************/ + +#include <linux/version.h> + +#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,38)) +#ifndef AUTOCONF_INCLUDED +#include <linux/config.h> +#endif +#endif + +#include <linux/module.h> +#include <linux/pci.h> +#include <linux/slab.h> + +#if defined(SUPPORT_DRI_DRM) +#include <drm/drmP.h> +#endif + +#if defined(DC_NOHW_DISCONTIG_BUFFERS) +#include <linux/vmalloc.h> +#include <asm/page.h> +#else +#include <asm/dma-mapping.h> +#endif + +#include "img_defs.h" +#include "servicesext.h" +#include "kerneldisplay.h" +#include "dc_nohw.h" +#include "pvrmodule.h" + +#if defined(SUPPORT_DRI_DRM) +#include "pvr_drm.h" +#endif + +#if defined(DC_USE_SET_MEMORY) + #undef DC_USE_SET_MEMORY +#endif + +#if !defined(DC_NOHW_DISCONTIG_BUFFERS) + #if defined(__i386__) && (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,26)) && defined(SUPPORT_LINUX_X86_PAT) && defined(SUPPORT_LINUX_X86_WRITECOMBINE) + #include <asm/cacheflush.h> + #define DC_USE_SET_MEMORY + #endif +#endif /* defined(DC_NOHW_DISCONTIG_BUFFERS) */ + +#define DRVNAME "dcnohw" + +#if !defined(SUPPORT_DRI_DRM) +MODULE_SUPPORTED_DEVICE(DRVNAME); +#endif + +#define unref__ __attribute__ ((unused)) + +#if defined(DC_NOHW_GET_BUFFER_DIMENSIONS) +static unsigned long width = DC_NOHW_BUFFER_WIDTH; +static unsigned long height = DC_NOHW_BUFFER_HEIGHT; +static unsigned long depth = DC_NOHW_BUFFER_BIT_DEPTH; + +module_param(width, ulong, S_IRUGO); +module_param(height, ulong, S_IRUGO); +module_param(depth, ulong, S_IRUGO); + +IMG_BOOL GetBufferDimensions(IMG_UINT32 *pui32Width, IMG_UINT32 *pui32Height, PVRSRV_PIXEL_FORMAT *pePixelFormat, IMG_UINT32 *pui32Stride) +{ + if (width == 0 || height == 0 || depth == 0 || + depth != dc_nohw_roundup_bit_depth(depth)) + { + printk(KERN_WARNING DRVNAME ": Illegal module parameters (width %lu, height %lu, depth %lu)\n", width, height, depth); + return IMG_FALSE; + } + + *pui32Width = (IMG_UINT32)width; + *pui32Height = (IMG_UINT32)height; + + switch(depth) + { + case 32: + *pePixelFormat = PVRSRV_PIXEL_FORMAT_ARGB8888; + break; + case 16: + *pePixelFormat = PVRSRV_PIXEL_FORMAT_RGB565; + break; + default: + printk(KERN_WARNING DRVNAME ": Display depth %lu not supported\n", depth); + *pePixelFormat = PVRSRV_PIXEL_FORMAT_UNKNOWN; + return IMG_FALSE; + } + + *pui32Stride = dc_nohw_byte_stride(width, depth); + +#if defined(DEBUG) + printk(KERN_INFO DRVNAME " Width: %lu\n", (unsigned long)*pui32Width); + printk(KERN_INFO DRVNAME " Height: %lu\n", (unsigned long)*pui32Height); + printk(KERN_INFO DRVNAME " Depth: %lu bits\n", depth); + printk(KERN_INFO DRVNAME " Stride: %lu bytes\n", (unsigned long)*pui32Stride); +#endif /* defined(DEBUG) */ + + return IMG_TRUE; +} +#endif /* defined(DC_NOHW_GET_BUFFER_DIMENSIONS) */ + +/***************************************************************************** + Function Name: DC_NOHW_Init + Description : Insert the driver into the kernel. + + __init places the function in a special memory section that + the kernel frees once the function has been run. Refer also + to module_init() macro call below. + +*****************************************************************************/ +#if defined(SUPPORT_DRI_DRM) +int PVR_DRM_MAKENAME(DISPLAY_CONTROLLER, _Init)(struct drm_device unref__ *dev) +#else +static int __init DC_NOHW_Init(void) +#endif +{ + if(Init() != DC_OK) + { + return -ENODEV; + } + + return 0; +} /*DC_NOHW_Init*/ + +/***************************************************************************** + Function Name: DC_NOHW_Cleanup + Description : Remove the driver from the kernel. + + __exit places the function in a special memory section that + the kernel frees once the function has been run. Refer also + to module_exit() macro call below. + +*****************************************************************************/ +#if defined(SUPPORT_DRI_DRM) +void PVR_DRM_MAKENAME(DISPLAY_CONTROLLER, _Cleanup)(struct drm_device unref__ *dev) +#else +static void __exit DC_NOHW_Cleanup(void) +#endif +{ + if(Deinit() != DC_OK) + { + printk (KERN_INFO DRVNAME ": DC_NOHW_Cleanup: can't deinit device\n"); + } +} /*DC_NOHW_Cleanup*/ + + +void *AllocKernelMem(unsigned long ulSize) +{ + return kmalloc(ulSize, GFP_KERNEL); +} + +void FreeKernelMem(void *pvMem) +{ + kfree(pvMem); +} + +#if defined(DC_NOHW_DISCONTIG_BUFFERS) + +#define RANGE_TO_PAGES(range) (((range) + (PAGE_SIZE - 1)) >> PAGE_SHIFT) +#define VMALLOC_TO_PAGE_PHYS(vAddr) page_to_phys(vmalloc_to_page(vAddr)) + +DC_ERROR AllocDiscontigMemory(unsigned long ulSize, + DC_HANDLE unref__ *phMemHandle, + IMG_CPU_VIRTADDR *pLinAddr, + IMG_SYS_PHYADDR **ppPhysAddr) +{ + unsigned long ulPages = RANGE_TO_PAGES(ulSize); + IMG_SYS_PHYADDR *pPhysAddr; + unsigned long ulPage; + IMG_CPU_VIRTADDR LinAddr; + + LinAddr = __vmalloc(ulSize, GFP_KERNEL | __GFP_HIGHMEM, pgprot_noncached(PAGE_KERNEL)); + if (!LinAddr) + { + return DC_ERROR_OUT_OF_MEMORY; + } + + pPhysAddr = kmalloc(ulPages * sizeof(IMG_SYS_PHYADDR), GFP_KERNEL); + if (!pPhysAddr) + { + vfree(LinAddr); + return DC_ERROR_OUT_OF_MEMORY; + } + + *pLinAddr = LinAddr; + + for (ulPage = 0; ulPage < ulPages; ulPage++) + { + pPhysAddr[ulPage].uiAddr = VMALLOC_TO_PAGE_PHYS(LinAddr); + + LinAddr += PAGE_SIZE; + } + + *ppPhysAddr = pPhysAddr; + + return DC_OK; +} + +void FreeDiscontigMemory(unsigned long ulSize, + DC_HANDLE unref__ hMemHandle, + IMG_CPU_VIRTADDR LinAddr, + IMG_SYS_PHYADDR *pPhysAddr) +{ + kfree(pPhysAddr); + + vfree(LinAddr); +} +#else /* defined(DC_NOHW_DISCONTIG_BUFFERS) */ +DC_ERROR AllocContigMemory(unsigned long ulSize, + DC_HANDLE unref__ *phMemHandle, + IMG_CPU_VIRTADDR *pLinAddr, + IMG_CPU_PHYADDR *pPhysAddr) +{ +#if defined(DC_USE_SET_MEMORY) + void *pvLinAddr; + unsigned long ulAlignedSize = PAGE_ALIGN(ulSize); + int iPages = (int)(ulAlignedSize >> PAGE_SHIFT); + int iError; + + pvLinAddr = kmalloc(ulAlignedSize, GFP_KERNEL); + iError = set_memory_wc((unsigned long)pvLinAddr, iPages); + if (iError != 0) + { + printk(KERN_ERR DRVNAME ": AllocContigMemory: set_memory_wc failed (%d)\n", iError); + + return DC_ERROR_OUT_OF_MEMORY; + } + + pPhysAddr->uiAddr = virt_to_phys(pvLinAddr); + *pLinAddr = pvLinAddr; + + return DC_OK; +#else /* DC_USE_SET_MEMORY */ + dma_addr_t dma; + IMG_VOID *pvLinAddr; + + pvLinAddr = dma_alloc_coherent(NULL, ulSize, &dma, GFP_KERNEL); + + if (pvLinAddr == NULL) + { + return DC_ERROR_OUT_OF_MEMORY; + } + + pPhysAddr->uiAddr = dma; + *pLinAddr = pvLinAddr; + + return DC_OK; +#endif /* DC_USE_SET_MEMORY */ +} + +void FreeContigMemory(unsigned long ulSize, + DC_HANDLE unref__ hMemHandle, + IMG_CPU_VIRTADDR LinAddr, + IMG_CPU_PHYADDR PhysAddr) +{ +#if defined(DC_USE_SET_MEMORY) + unsigned long ulAlignedSize = PAGE_ALIGN(ulSize); + int iError; + int iPages = (int)(ulAlignedSize >> PAGE_SHIFT); + + iError = set_memory_wb((unsigned long)LinAddr, iPages); + if (iError != 0) + { + printk(KERN_ERR DRVNAME ": FreeContigMemory: set_memory_wb failed (%d)\n", iError); + } + kfree(LinAddr); +#else /* DC_USE_SET_MEMORY */ + dma_free_coherent(NULL, ulSize, LinAddr, (dma_addr_t)PhysAddr.uiAddr); +#endif /* DC_USE_SET_MEMORY */ +} +#endif /* defined(DC_NOHW_DISCONTIG_BUFFERS) */ + +DC_ERROR OpenPVRServices (DC_HANDLE *phPVRServices) +{ + /* Nothing to do - we have already checked services module insertion */ + *phPVRServices = 0; + return DC_OK; +} + +DC_ERROR ClosePVRServices (DC_HANDLE unref__ hPVRServices) +{ + /* Nothing to do */ + return DC_OK; +} + +DC_ERROR GetLibFuncAddr (DC_HANDLE unref__ hExtDrv, char *szFunctionName, PFN_DC_GET_PVRJTABLE *ppfnFuncTable) +{ + if(strcmp("PVRGetDisplayClassJTable", szFunctionName) != 0) + { + return DC_ERROR_INVALID_PARAMS; + } + + /* Nothing to do - should be exported from pvrsrv.ko */ + *ppfnFuncTable = PVRGetDisplayClassJTable; + + return DC_OK; +} + +#if !defined(SUPPORT_DRI_DRM) +/* + These macro calls define the initialisation and removal functions of the + driver. Although they are prefixed `module_', they apply when compiling + statically as well; in both cases they define the function the kernel will + run to start/stop the driver. +*/ +module_init(DC_NOHW_Init); +module_exit(DC_NOHW_Cleanup); +#endif |