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Commit d8b75e15 authored by Harshdeep Dhatt's avatar Harshdeep Dhatt Committed by Carter Cooper
Browse files

msm: kgsl: Allocate global buffers through paged memory 



The global buffers are allocated through cma, which can
be very limited on some targets. Add a flag to allocate
a global buffer through our page allocator.

CRs-Fixed: 1024295
Change-Id: Ie796b03ce152774535f593acdf00e900109d303a
Signed-off-by: default avatarHarshdeep Dhatt <hdhatt@codeaurora.org>
parent cc915a39

drivers/gpu/msm/kgsl.c

+1 −1
Original line number Diff line number Diff line
@@ -3913,7 +3913,7 @@ int kgsl_device_platform_probe(struct kgsl_device *device) 
		goto error_close_mmu;



	status = kgsl_allocate_global(device, &device->memstore,

		KGSL_MEMSTORE_SIZE, 0, 0);

		KGSL_MEMSTORE_SIZE, 0, KGSL_MEMDESC_CONTIG);



	if (status != 0)

		goto error_close_mmu;

drivers/gpu/msm/kgsl.h

+2 −0
Original line number Diff line number Diff line
@@ -163,6 +163,8 @@ struct kgsl_memdesc_ops { 
#define KGSL_MEMDESC_PRIVILEGED BIT(6)

/* The memdesc is TZ locked content protection */

#define KGSL_MEMDESC_TZ_LOCKED BIT(7)

/* The memdesc is allocated through contiguous memory */

#define KGSL_MEMDESC_CONTIG BIT(8)



/**

 * struct kgsl_memdesc - GPU memory object descriptor

drivers/gpu/msm/kgsl_sharedmem.c

+1 −5
Original line number Diff line number Diff line
@@ -313,10 +313,6 @@ kgsl_sharedmem_init_sysfs(void) 
		drv_attr_list);

}



static int kgsl_sharedmem_page_alloc_user(struct kgsl_memdesc *memdesc,

				struct kgsl_pagetable *pagetable,

				uint64_t size);



static int kgsl_cma_alloc_secure(struct kgsl_device *device,

			struct kgsl_memdesc *memdesc, uint64_t size);
@@ -672,7 +668,7 @@ static inline int get_page_size(size_t size, unsigned int align) 
}

#endif



static int

int

kgsl_sharedmem_page_alloc_user(struct kgsl_memdesc *memdesc,

			struct kgsl_pagetable *pagetable,

			uint64_t size)

drivers/gpu/msm/kgsl_sharedmem.h

+15 −2
Original line number Diff line number Diff line 
/* Copyright (c) 2002,2007-2015, The Linux Foundation. All rights reserved.

/* Copyright (c) 2002,2007-2016, The Linux Foundation. All rights reserved.

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License version 2 and
@@ -71,6 +71,10 @@ int kgsl_allocate_user(struct kgsl_device *device, 


void kgsl_get_memory_usage(char *str, size_t len, uint64_t memflags);



int kgsl_sharedmem_page_alloc_user(struct kgsl_memdesc *memdesc,

				struct kgsl_pagetable *pagetable,

				uint64_t size);



#define MEMFLAGS(_flags, _mask, _shift) \

	((unsigned int) (((_flags) & (_mask)) >> (_shift)))
@@ -266,7 +270,16 @@ static inline int kgsl_allocate_global(struct kgsl_device *device, 
	memdesc->flags = flags;

	memdesc->priv = priv;



	ret = kgsl_sharedmem_alloc_contig(device, memdesc, NULL, (size_t) size);

	if ((memdesc->priv & KGSL_MEMDESC_CONTIG) != 0)

		ret = kgsl_sharedmem_alloc_contig(device, memdesc, NULL,

						(size_t) size);

	else {

		ret = kgsl_sharedmem_page_alloc_user(memdesc, NULL,

						(size_t) size);

		if (ret == 0)

			kgsl_memdesc_map(memdesc);

	}



	if (ret == 0)

		kgsl_mmu_add_global(device, memdesc);