diff options
Diffstat (limited to 'nvkm/subdev/pwr/fuc/host.fuc')
| -rw-r--r-- | nvkm/subdev/pwr/fuc/host.fuc | 151 |
1 files changed, 0 insertions, 151 deletions
diff --git a/nvkm/subdev/pwr/fuc/host.fuc b/nvkm/subdev/pwr/fuc/host.fuc deleted file mode 100644 index c2bb616a8..000000000 --- a/nvkm/subdev/pwr/fuc/host.fuc +++ /dev/null @@ -1,151 +0,0 @@ -/* - * Copyright 2013 Red Hat Inc. - * - * 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. - * - * Authors: Ben Skeggs - */ - -#ifdef INCLUDE_PROC -process(PROC_HOST, #host_init, #host_recv) -#endif - -/****************************************************************************** - * HOST data segment - *****************************************************************************/ -#ifdef INCLUDE_DATA -// HOST (R)FIFO packet format -.equ #fifo_process 0x00 -.equ #fifo_message 0x04 -.equ #fifo_data0 0x08 -.equ #fifo_data1 0x0c - -// HOST HOST->PWR queue description -.equ #fifo_qlen 4 // log2(size of queue entry in bytes) -.equ #fifo_qnum 3 // log2(max number of entries in queue) -.equ #fifo_qmaskb (1 << #fifo_qnum) // max number of entries in queue -.equ #fifo_qmaskp (#fifo_qmaskb - 1) -.equ #fifo_qmaskf ((#fifo_qmaskb << 1) - 1) -.equ #fifo_qsize (1 << (#fifo_qlen + #fifo_qnum)) -fifo_queue: .skip 128 // #fifo_qsize - -// HOST PWR->HOST queue description -.equ #rfifo_qlen 4 // log2(size of queue entry in bytes) -.equ #rfifo_qnum 3 // log2(max number of entries in queue) -.equ #rfifo_qmaskb (1 << #rfifo_qnum) // max number of entries in queue -.equ #rfifo_qmaskp (#rfifo_qmaskb - 1) -.equ #rfifo_qmaskf ((#rfifo_qmaskb << 1) - 1) -.equ #rfifo_qsize (1 << (#rfifo_qlen + #rfifo_qnum)) -rfifo_queue: .skip 128 // #rfifo_qsize -#endif - -/****************************************************************************** - * HOST code segment - *****************************************************************************/ -#ifdef INCLUDE_CODE -// HOST->PWR comms - dequeue message(s) for process(es) from FIFO -// -// $r15 - current (host) -// $r0 - zero -host_send: - nv_iord($r1, NV_PPWR_FIFO_GET(0)) - nv_iord($r2, NV_PPWR_FIFO_PUT(0)) - cmp b32 $r1 $r2 - bra e #host_send_done - // calculate address of message - and $r14 $r1 #fifo_qmaskp - shl b32 $r14 $r14 #fifo_qlen - add b32 $r14 #fifo_queue - - // read message data, and pass to appropriate process - ld b32 $r11 D[$r14 + #fifo_data1] - ld b32 $r12 D[$r14 + #fifo_data0] - ld b32 $r13 D[$r14 + #fifo_message] - ld b32 $r14 D[$r14 + #fifo_process] - call(send) - - // increment GET - add b32 $r1 0x1 - and $r14 $r1 #fifo_qmaskf - nv_iowr(NV_PPWR_FIFO_GET(0), $r14) - bra #host_send - host_send_done: - ret - -// PWR->HOST comms - enqueue message for HOST to RFIFO -// -// $r15 - current (host) -// $r14 - process -// $r13 - message -// $r12 - message data 0 -// $r11 - message data 1 -// $r0 - zero -host_recv: - // message from intr handler == HOST->PWR comms pending - mov $r1 (PROC_KERN & 0x0000ffff) - sethi $r1 (PROC_KERN & 0xffff0000) - cmp b32 $r14 $r1 - bra e #host_send - - // wait for space in RFIFO - host_recv_wait: - nv_iord($r1, NV_PPWR_RFIFO_GET) - nv_iord($r2, NV_PPWR_RFIFO_PUT) - xor $r1 #rfifo_qmaskb - cmp b32 $r1 $r2 - bra e #host_recv_wait - - and $r3 $r2 #rfifo_qmaskp - shl b32 $r3 #rfifo_qlen - add b32 $r3 #rfifo_queue - - // enqueue message - st b32 D[$r3 + #fifo_data1] $r11 - st b32 D[$r3 + #fifo_data0] $r12 - st b32 D[$r3 + #fifo_message] $r13 - st b32 D[$r3 + #fifo_process] $r14 - - add b32 $r2 0x1 - and $r2 #rfifo_qmaskf - nv_iowr(NV_PPWR_RFIFO_PUT, $r2) - - // notify host of pending message - mov $r2 NV_PPWR_INTR_TRIGGER_USER0 - nv_iowr(NV_PPWR_INTR_TRIGGER, $r2) - ret - -// $r15 - current (host) -// $r0 - zero -host_init: - // store each fifo's base/size in H2D/D2H scratch regs - mov $r1 #fifo_qsize - shl b32 $r1 16 - or $r1 #fifo_queue - nv_iowr(NV_PPWR_H2D, $r1); - - mov $r1 #rfifo_qsize - shl b32 $r1 16 - or $r1 #rfifo_queue - nv_iowr(NV_PPWR_D2H, $r1); - - // enable fifo subintr for first fifo - mov $r1 1 - nv_iowr(NV_PPWR_FIFO_INTR_EN, $r1) - ret -#endif |