DLBU is used to balance load among PPs.
Signed-off-by: Qiang Yu yuq825@gmail.com --- drivers/gpu/drm/lima/lima_dlbu.c | 75 ++++++++++++++++++++++++++++++++ drivers/gpu/drm/lima/lima_dlbu.h | 37 ++++++++++++++++ 2 files changed, 112 insertions(+) create mode 100644 drivers/gpu/drm/lima/lima_dlbu.c create mode 100644 drivers/gpu/drm/lima/lima_dlbu.h
diff --git a/drivers/gpu/drm/lima/lima_dlbu.c b/drivers/gpu/drm/lima/lima_dlbu.c new file mode 100644 index 000000000000..5281dd3c0417 --- /dev/null +++ b/drivers/gpu/drm/lima/lima_dlbu.c @@ -0,0 +1,75 @@ +/* + * Copyright (C) 2017-2018 Lima Project + * + * 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. + * + * 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. IN NO EVENT SHALL + * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) 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. + */ + +#include <linux/io.h> +#include <linux/device.h> + +#include "lima_device.h" +#include "lima_dlbu.h" +#include "lima_vm.h" +#include "lima_regs.h" + +#define dlbu_write(reg, data) writel(data, ip->iomem + LIMA_DLBU_##reg) +#define dlbu_read(reg) readl(ip->iomem + LIMA_DLBU_##reg) + +void lima_dlbu_enable(struct lima_device *dev) +{ + struct lima_sched_pipe *pipe = dev->pipe + lima_pipe_pp; + struct lima_ip *ip = dev->ip + lima_ip_dlbu; + int i, mask = 0; + + for (i = 0; i < pipe->num_processor; i++) { + struct lima_ip *pp = pipe->processor[i]; + mask |= 1 << (pp->id - lima_ip_pp0); + } + + dlbu_write(PP_ENABLE_MASK, mask); +} + +void lima_dlbu_disable(struct lima_device *dev) +{ + struct lima_ip *ip = dev->ip + lima_ip_dlbu; + dlbu_write(PP_ENABLE_MASK, 0); +} + +void lima_dlbu_set_reg(struct lima_ip *ip, u32 *reg) +{ + dlbu_write(TLLIST_VBASEADDR, reg[0]); + dlbu_write(FB_DIM, reg[1]); + dlbu_write(TLLIST_CONF, reg[2]); + dlbu_write(START_TILE_POS, reg[3]); +} + +int lima_dlbu_init(struct lima_ip *ip) +{ + struct lima_device *dev = ip->dev; + + dlbu_write(MASTER_TLLIST_PHYS_ADDR, dev->dlbu_dma | 1); + dlbu_write(MASTER_TLLIST_VADDR, LIMA_VA_RESERVE_DLBU); + + return 0; +} + +void lima_dlbu_fini(struct lima_ip *ip) +{ + +} diff --git a/drivers/gpu/drm/lima/lima_dlbu.h b/drivers/gpu/drm/lima/lima_dlbu.h new file mode 100644 index 000000000000..4521a5dda9e0 --- /dev/null +++ b/drivers/gpu/drm/lima/lima_dlbu.h @@ -0,0 +1,37 @@ +/* + * Copyright (C) 2017-2018 Lima Project + * + * 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. + * + * 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. IN NO EVENT SHALL + * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) 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. + */ + +#ifndef __LIMA_DLBU_H__ +#define __LIMA_DLBU_H__ + +struct lima_ip; +struct lima_device; + +void lima_dlbu_enable(struct lima_device *dev); +void lima_dlbu_disable(struct lima_device *dev); + +void lima_dlbu_set_reg(struct lima_ip *ip, u32 *reg); + +int lima_dlbu_init(struct lima_ip *ip); +void lima_dlbu_fini(struct lima_ip *ip); + +#endif