diff options
Diffstat (limited to 'drivers/gpu/drm/nouveau/nv98_crypt.fuc')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nv98_crypt.fuc | 698 |
1 files changed, 698 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nv98_crypt.fuc b/drivers/gpu/drm/nouveau/nv98_crypt.fuc new file mode 100644 index 000000000000..7393813044de --- /dev/null +++ b/drivers/gpu/drm/nouveau/nv98_crypt.fuc @@ -0,0 +1,698 @@ +/* + * fuc microcode for nv98 pcrypt engine + * Copyright (C) 2010 Marcin Kościelnicki + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +.section #nv98_pcrypt_data + +ctx_dma: +ctx_dma_query: .b32 0 +ctx_dma_src: .b32 0 +ctx_dma_dst: .b32 0 +.equ #dma_count 3 +ctx_query_address_high: .b32 0 +ctx_query_address_low: .b32 0 +ctx_query_counter: .b32 0 +ctx_cond_address_high: .b32 0 +ctx_cond_address_low: .b32 0 +ctx_cond_off: .b32 0 +ctx_src_address_high: .b32 0 +ctx_src_address_low: .b32 0 +ctx_dst_address_high: .b32 0 +ctx_dst_address_low: .b32 0 +ctx_mode: .b32 0 +.align 16 +ctx_key: .skip 16 +ctx_iv: .skip 16 + +.align 0x80 +swap: +.skip 32 + +.align 8 +common_cmd_dtable: +.b32 #ctx_query_address_high + 0x20000 ~0xff +.b32 #ctx_query_address_low + 0x20000 ~0xfffffff0 +.b32 #ctx_query_counter + 0x20000 ~0xffffffff +.b32 #cmd_query_get + 0x00000 ~1 +.b32 #ctx_cond_address_high + 0x20000 ~0xff +.b32 #ctx_cond_address_low + 0x20000 ~0xfffffff0 +.b32 #cmd_cond_mode + 0x00000 ~7 +.b32 #cmd_wrcache_flush + 0x00000 ~0 +.equ #common_cmd_max 0x88 + + +.align 8 +engine_cmd_dtable: +.b32 #ctx_key + 0x0 + 0x20000 ~0xffffffff +.b32 #ctx_key + 0x4 + 0x20000 ~0xffffffff +.b32 #ctx_key + 0x8 + 0x20000 ~0xffffffff +.b32 #ctx_key + 0xc + 0x20000 ~0xffffffff +.b32 #ctx_iv + 0x0 + 0x20000 ~0xffffffff +.b32 #ctx_iv + 0x4 + 0x20000 ~0xffffffff +.b32 #ctx_iv + 0x8 + 0x20000 ~0xffffffff +.b32 #ctx_iv + 0xc + 0x20000 ~0xffffffff +.b32 #ctx_src_address_high + 0x20000 ~0xff +.b32 #ctx_src_address_low + 0x20000 ~0xfffffff0 +.b32 #ctx_dst_address_high + 0x20000 ~0xff +.b32 #ctx_dst_address_low + 0x20000 ~0xfffffff0 +.b32 #crypt_cmd_mode + 0x00000 ~0xf +.b32 #crypt_cmd_length + 0x10000 ~0x0ffffff0 +.equ #engine_cmd_max 0xce + +.align 4 +crypt_dtable: +.b16 #crypt_copy_prep #crypt_do_inout +.b16 #crypt_store_prep #crypt_do_out +.b16 #crypt_ecb_e_prep #crypt_do_inout +.b16 #crypt_ecb_d_prep #crypt_do_inout +.b16 #crypt_cbc_e_prep #crypt_do_inout +.b16 #crypt_cbc_d_prep #crypt_do_inout +.b16 #crypt_pcbc_e_prep #crypt_do_inout +.b16 #crypt_pcbc_d_prep #crypt_do_inout +.b16 #crypt_cfb_e_prep #crypt_do_inout +.b16 #crypt_cfb_d_prep #crypt_do_inout +.b16 #crypt_ofb_prep #crypt_do_inout +.b16 #crypt_ctr_prep #crypt_do_inout +.b16 #crypt_cbc_mac_prep #crypt_do_in +.b16 #crypt_cmac_finish_complete_prep #crypt_do_in +.b16 #crypt_cmac_finish_partial_prep #crypt_do_in + +.align 0x100 + +.section #nv98_pcrypt_code + + // $r0 is always set to 0 in our code - this allows some space savings. + clear b32 $r0 + + // set up the interrupt handler + mov $r1 #ih + mov $iv0 $r1 + + // init stack pointer + mov $sp $r0 + + // set interrupt dispatch - route timer, fifo, ctxswitch to i0, others to host + movw $r1 0xfff0 + sethi $r1 0 + mov $r2 0x400 + iowr I[$r2 + 0x300] $r1 + + // enable the interrupts + or $r1 0xc + iowr I[$r2] $r1 + + // enable fifo access and context switching + mov $r1 3 + mov $r2 0x1200 + iowr I[$r2] $r1 + + // enable i0 delivery + bset $flags ie0 + + // sleep forver, waking only for interrupts. + bset $flags $p0 + spin: + sleep $p0 + bra #spin + +// i0 handler +ih: + // see which interrupts we got + iord $r1 I[$r0 + 0x200] + + and $r2 $r1 0x8 + cmpu b32 $r2 0 + bra e #noctx + + // context switch... prepare the regs for xfer + mov $r2 0x7700 + mov $xtargets $r2 + mov $xdbase $r0 + // 128-byte context. + mov $r2 0 + sethi $r2 0x50000 + + // read current channel + mov $r3 0x1400 + iord $r4 I[$r3] + // if bit 30 set, it's active, so we have to unload it first. + shl b32 $r5 $r4 1 + cmps b32 $r5 0 + bra nc #ctxload + + // unload the current channel - save the context + xdst $r0 $r2 + xdwait + // and clear bit 30, then write back + bclr $r4 0x1e + iowr I[$r3] $r4 + // tell PFIFO we unloaded + mov $r4 1 + iowr I[$r3 + 0x200] $r4 + + bra #noctx + + ctxload: + // no channel loaded - perhaps we're requested to load one + iord $r4 I[$r3 + 0x100] + shl b32 $r15 $r4 1 + cmps b32 $r15 0 + // if bit 30 of next channel not set, probably PFIFO is just + // killing a context. do a faux load, without the active bit. + bra nc #dummyload + + // ok, do a real context load. + xdld $r0 $r2 + xdwait + mov $r5 #ctx_dma + mov $r6 #dma_count - 1 + ctxload_dma_loop: + ld b32 $r7 D[$r5 + $r6 * 4] + add b32 $r8 $r6 0x180 + shl b32 $r8 8 + iowr I[$r8] $r7 + sub b32 $r6 1 + bra nc #ctxload_dma_loop + + dummyload: + // tell PFIFO we're done + mov $r5 2 + iowr I[$r3 + 0x200] $r5 + + noctx: + and $r2 $r1 0x4 + cmpu b32 $r2 0 + bra e #nocmd + + // incoming fifo command. + mov $r3 0x1900 + iord $r2 I[$r3 + 0x100] + iord $r3 I[$r3] + // extract the method + and $r4 $r2 0x7ff + // shift the addr to proper position if we need to interrupt later + shl b32 $r2 0x10 + + // mthd 0 and 0x100 [NAME, NOP]: ignore + and $r5 $r4 0x7bf + cmpu b32 $r5 0 + bra e #cmddone + + mov $r5 #engine_cmd_dtable - 0xc0 * 8 + mov $r6 #engine_cmd_max + cmpu b32 $r4 0xc0 + bra nc #dtable_cmd + mov $r5 #common_cmd_dtable - 0x80 * 8 + mov $r6 #common_cmd_max + cmpu b32 $r4 0x80 + bra nc #dtable_cmd + cmpu b32 $r4 0x60 + bra nc #dma_cmd + cmpu b32 $r4 0x50 + bra ne #illegal_mthd + + // mthd 0x140: PM_TRIGGER + mov $r2 0x2200 + clear b32 $r3 + sethi $r3 0x20000 + iowr I[$r2] $r3 + bra #cmddone + + dma_cmd: + // mthd 0x180...: DMA_* + cmpu b32 $r4 0x60+#dma_count + bra nc #illegal_mthd + shl b32 $r5 $r4 2 + add b32 $r5 (#ctx_dma - 0x60 * 4) & 0xffff + bset $r3 0x1e + st b32 D[$r5] $r3 + add b32 $r4 0x180 - 0x60 + shl b32 $r4 8 + iowr I[$r4] $r3 + bra #cmddone + + dtable_cmd: + cmpu b32 $r4 $r6 + bra nc #illegal_mthd + shl b32 $r4 3 + add b32 $r4 $r5 + ld b32 $r5 D[$r4 + 4] + and $r5 $r3 + cmpu b32 $r5 0 + bra ne #invalid_bitfield + ld b16 $r5 D[$r4] + ld b16 $r6 D[$r4 + 2] + cmpu b32 $r6 2 + bra e #cmd_setctx + ld b32 $r7 D[$r0 + #ctx_cond_off] + and $r6 $r7 + cmpu b32 $r6 1 + bra e #cmddone + call $r5 + bra $p1 #dispatch_error + bra #cmddone + + cmd_setctx: + st b32 D[$r5] $r3 + bra #cmddone + + + invalid_bitfield: + or $r2 1 + dispatch_error: + illegal_mthd: + mov $r4 0x1000 + iowr I[$r4] $r2 + iowr I[$r4 + 0x100] $r3 + mov $r4 0x40 + iowr I[$r0] $r4 + + im_loop: + iord $r4 I[$r0 + 0x200] + and $r4 0x40 + cmpu b32 $r4 0 + bra ne #im_loop + + cmddone: + // remove the command from FIFO + mov $r3 0x1d00 + mov $r4 1 + iowr I[$r3] $r4 + + nocmd: + // ack the processed interrupts + and $r1 $r1 0xc + iowr I[$r0 + 0x100] $r1 +iret + +cmd_query_get: + // if bit 0 of param set, trigger interrupt afterwards. + setp $p1 $r3 + or $r2 3 + + // read PTIMER, beware of races... + mov $r4 0xb00 + ptimer_retry: + iord $r6 I[$r4 + 0x100] + iord $r5 I[$r4] + iord $r7 I[$r4 + 0x100] + cmpu b32 $r6 $r7 + bra ne #ptimer_retry + + // prepare the query structure + ld b32 $r4 D[$r0 + #ctx_query_counter] + st b32 D[$r0 + #swap + 0x0] $r4 + st b32 D[$r0 + #swap + 0x4] $r0 + st b32 D[$r0 + #swap + 0x8] $r5 + st b32 D[$r0 + #swap + 0xc] $r6 + + // will use target 0, DMA_QUERY. + mov $xtargets $r0 + + ld b32 $r4 D[$r0 + #ctx_query_address_high] + shl b32 $r4 0x18 + mov $xdbase $r4 + + ld b32 $r4 D[$r0 + #ctx_query_address_low] + mov $r5 #swap + sethi $r5 0x20000 + xdst $r4 $r5 + xdwait + + ret + +cmd_cond_mode: + // if >= 5, INVALID_ENUM + bset $flags $p1 + or $r2 2 + cmpu b32 $r3 5 + bra nc #return + + // otherwise, no error. + bclr $flags $p1 + + // if < 2, no QUERY object is involved + cmpu b32 $r3 2 + bra nc #cmd_cond_mode_queryful + + xor $r3 1 + st b32 D[$r0 + #ctx_cond_off] $r3 + return: + ret + + cmd_cond_mode_queryful: + // ok, will need to pull a QUERY object, prepare offsets + ld b32 $r4 D[$r0 + #ctx_cond_address_high] + ld b32 $r5 D[$r0 + #ctx_cond_address_low] + and $r6 $r5 0xff + shr b32 $r5 8 + shl b32 $r4 0x18 + or $r4 $r5 + mov $xdbase $r4 + mov $xtargets $r0 + + // pull the first one + mov $r5 #swap + sethi $r5 0x20000 + xdld $r6 $r5 + + // if == 2, only a single QUERY is involved... + cmpu b32 $r3 2 + bra ne #cmd_cond_mode_double + + xdwait + ld b32 $r4 D[$r0 + #swap + 4] + cmpu b32 $r4 0 + xbit $r4 $flags z + st b32 D[$r0 + #ctx_cond_off] $r4 + ret + + // ok, we'll need to pull second one too + cmd_cond_mode_double: + add b32 $r6 0x10 + add b32 $r5 0x10 + xdld $r6 $r5 + xdwait + + // compare COUNTERs + ld b32 $r5 D[$r0 + #swap + 0x00] + ld b32 $r6 D[$r0 + #swap + 0x10] + cmpu b32 $r5 $r6 + xbit $r4 $flags z + + // compare RESen + ld b32 $r5 D[$r0 + #swap + 0x04] + ld b32 $r6 D[$r0 + #swap + 0x14] + cmpu b32 $r5 $r6 + xbit $r5 $flags z + and $r4 $r5 + + // and negate or not, depending on mode + cmpu b32 $r3 3 + xbit $r5 $flags z + xor $r4 $r5 + st b32 D[$r0 + #ctx_cond_off] $r4 + ret + +cmd_wrcache_flush: + bclr $flags $p1 + mov $r2 0x2200 + clear b32 $r3 + sethi $r3 0x10000 + iowr I[$r2] $r3 + ret + +crypt_cmd_mode: + // if >= 0xf, INVALID_ENUM + bset $flags $p1 + or $r2 2 + cmpu b32 $r3 0xf + bra nc #crypt_cmd_mode_return + + bclr $flags $p1 + st b32 D[$r0 + #ctx_mode] $r3 + + crypt_cmd_mode_return: + ret + +crypt_cmd_length: + // nop if length == 0 + cmpu b32 $r3 0 + bra e #crypt_cmd_mode_return + + // init key, IV + cxset 3 + mov $r4 #ctx_key + sethi $r4 0x70000 + xdst $r0 $r4 + mov $r4 #ctx_iv + sethi $r4 0x60000 + xdst $r0 $r4 + xdwait + ckeyreg $c7 + + // prepare the targets + mov $r4 0x2100 + mov $xtargets $r4 + + // prepare src address + ld b32 $r4 D[$r0 + #ctx_src_address_high] + ld b32 $r5 D[$r0 + #ctx_src_address_low] + shr b32 $r8 $r5 8 + shl b32 $r4 0x18 + or $r4 $r8 + and $r5 $r5 0xff + + // prepare dst address + ld b32 $r6 D[$r0 + #ctx_dst_address_high] + ld b32 $r7 D[$r0 + #ctx_dst_address_low] + shr b32 $r8 $r7 8 + shl b32 $r6 0x18 + or $r6 $r8 + and $r7 $r7 0xff + + // find the proper prep & do functions + ld b32 $r8 D[$r0 + #ctx_mode] + shl b32 $r8 2 + + // run prep + ld b16 $r9 D[$r8 + #crypt_dtable] + call $r9 + + // do it + ld b16 $r9 D[$r8 + #crypt_dtable + 2] + call $r9 + cxset 1 + xdwait + cxset 0x61 + xdwait + xdwait + + // update src address + shr b32 $r8 $r4 0x18 + shl b32 $r9 $r4 8 + add b32 $r9 $r5 + adc b32 $r8 0 + st b32 D[$r0 + #ctx_src_address_high] $r8 + st b32 D[$r0 + #ctx_src_address_low] $r9 + + // update dst address + shr b32 $r8 $r6 0x18 + shl b32 $r9 $r6 8 + add b32 $r9 $r7 + adc b32 $r8 0 + st b32 D[$r0 + #ctx_dst_address_high] $r8 + st b32 D[$r0 + #ctx_dst_address_low] $r9 + + // pull updated IV + cxset 2 + mov $r4 #ctx_iv + sethi $r4 0x60000 + xdld $r0 $r4 + xdwait + + ret + + +crypt_copy_prep: + cs0begin 2 + cxsin $c0 + cxsout $c0 + ret + +crypt_store_prep: + cs0begin 1 + cxsout $c6 + ret + +crypt_ecb_e_prep: + cs0begin 3 + cxsin $c0 + cenc $c0 $c0 + cxsout $c0 + ret + +crypt_ecb_d_prep: + ckexp $c7 $c7 + cs0begin 3 + cxsin $c0 + cdec $c0 $c0 + cxsout $c0 + ret + +crypt_cbc_e_prep: + cs0begin 4 + cxsin $c0 + cxor $c6 $c0 + cenc $c6 $c6 + cxsout $c6 + ret + +crypt_cbc_d_prep: + ckexp $c7 $c7 + cs0begin 5 + cmov $c2 $c6 + cxsin $c6 + cdec $c0 $c6 + cxor $c0 $c2 + cxsout $c0 + ret + +crypt_pcbc_e_prep: + cs0begin 5 + cxsin $c0 + cxor $c6 $c0 + cenc $c6 $c6 + cxsout $c6 + cxor $c6 $c0 + ret + +crypt_pcbc_d_prep: + ckexp $c7 $c7 + cs0begin 5 + cxsin $c0 + cdec $c1 $c0 + cxor $c6 $c1 + cxsout $c6 + cxor $c6 $c0 + ret + +crypt_cfb_e_prep: + cs0begin 4 + cenc $c6 $c6 + cxsin $c0 + cxor $c6 $c0 + cxsout $c6 + ret + +crypt_cfb_d_prep: + cs0begin 4 + cenc $c0 $c6 + cxsin $c6 + cxor $c0 $c6 + cxsout $c0 + ret + +crypt_ofb_prep: + cs0begin 4 + cenc $c6 $c6 + cxsin $c0 + cxor $c0 $c6 + cxsout $c0 + ret + +crypt_ctr_prep: + cs0begin 5 + cenc $c1 $c6 + cadd $c6 1 + cxsin $c0 + cxor $c0 $c1 + cxsout $c0 + ret + +crypt_cbc_mac_prep: + cs0begin 3 + cxsin $c0 + cxor $c6 $c0 + cenc $c6 $c6 + ret + +crypt_cmac_finish_complete_prep: + cs0begin 7 + cxsin $c0 + cxor $c6 $c0 + cxor $c0 $c0 + cenc $c0 $c0 + cprecmac $c0 $c0 + cxor $c6 $c0 + cenc $c6 $c6 + ret + +crypt_cmac_finish_partial_prep: + cs0begin 8 + cxsin $c0 + cxor $c6 $c0 + cxor $c0 $c0 + cenc $c0 $c0 + cprecmac $c0 $c0 + cprecmac $c0 $c0 + cxor $c6 $c0 + cenc $c6 $c6 + ret + +// TODO +crypt_do_in: + add b32 $r3 $r5 + mov $xdbase $r4 + mov $r9 #swap + sethi $r9 0x20000 + crypt_do_in_loop: + xdld $r5 $r9 + xdwait + cxset 0x22 + xdst $r0 $r9 + cs0exec 1 + xdwait + add b32 $r5 0x10 + cmpu b32 $r5 $r3 + bra ne #crypt_do_in_loop + cxset 1 + xdwait + ret + +crypt_do_out: + add b32 $r3 $r7 + mov $xdbase $r6 + mov $r9 #swap + sethi $r9 0x20000 + crypt_do_out_loop: + cs0exec 1 + cxset 0x61 + xdld $r7 $r9 + xdst $r7 $r9 + cxset 1 + xdwait + add b32 $r7 0x10 + cmpu b32 $r7 $r3 + bra ne #crypt_do_out_loop + ret + +crypt_do_inout: + add b32 $r3 $r5 + mov $r9 #swap + sethi $r9 0x20000 + crypt_do_inout_loop: + mov $xdbase $r4 + xdld $r5 $r9 + xdwait + cxset 0x21 + xdst $r0 $r9 + cs0exec 1 + cxset 0x61 + mov $xdbase $r6 + xdld $r7 $r9 + xdst $r7 $r9 + cxset 1 + xdwait + add b32 $r5 0x10 + add b32 $r7 0x10 + cmpu b32 $r5 $r3 + bra ne #crypt_do_inout_loop + ret + +.align 0x100 |