| /* |
| * spu_csa.h: Definitions for SPU context save area (CSA). |
| * |
| * (C) Copyright IBM 2005 |
| * |
| * Author: Mark Nutter <mnutter@us.ibm.com> |
| * |
| * 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, 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., 675 Mass Ave, Cambridge, MA 02139, USA. |
| */ |
| |
| #ifndef _SPU_CSA_H_ |
| #define _SPU_CSA_H_ |
| #ifdef __KERNEL__ |
| |
| /* |
| * Total number of 128-bit registers. |
| */ |
| #define NR_SPU_GPRS 128 |
| #define NR_SPU_SPRS 9 |
| #define NR_SPU_REGS_PAD 7 |
| #define NR_SPU_SPILL_REGS 144 /* GPRS + SPRS + PAD */ |
| #define SIZEOF_SPU_SPILL_REGS NR_SPU_SPILL_REGS * 16 |
| |
| #define SPU_SAVE_COMPLETE 0x3FFB |
| #define SPU_RESTORE_COMPLETE 0x3FFC |
| |
| /* |
| * Definitions for various 'stopped' status conditions, |
| * to be recreated during context restore. |
| */ |
| #define SPU_STOPPED_STATUS_P 1 |
| #define SPU_STOPPED_STATUS_I 2 |
| #define SPU_STOPPED_STATUS_H 3 |
| #define SPU_STOPPED_STATUS_S 4 |
| #define SPU_STOPPED_STATUS_S_I 5 |
| #define SPU_STOPPED_STATUS_S_P 6 |
| #define SPU_STOPPED_STATUS_P_H 7 |
| #define SPU_STOPPED_STATUS_P_I 8 |
| #define SPU_STOPPED_STATUS_R 9 |
| |
| /* |
| * Definitions for software decrementer status flag. |
| */ |
| #define SPU_DECR_STATUS_RUNNING 0x1 |
| #define SPU_DECR_STATUS_WRAPPED 0x2 |
| |
| #ifndef __ASSEMBLY__ |
| /** |
| * spu_reg128 - generic 128-bit register definition. |
| */ |
| struct spu_reg128 { |
| u32 slot[4]; |
| }; |
| |
| /** |
| * struct spu_lscsa - Local Store Context Save Area. |
| * @gprs: Array of saved registers. |
| * @fpcr: Saved floating point status control register. |
| * @decr: Saved decrementer value. |
| * @decr_status: Indicates software decrementer status flags. |
| * @ppu_mb: Saved PPU mailbox data. |
| * @ppuint_mb: Saved PPU interrupting mailbox data. |
| * @tag_mask: Saved tag group mask. |
| * @event_mask: Saved event mask. |
| * @srr0: Saved SRR0. |
| * @stopped_status: Conditions to be recreated by restore. |
| * @ls: Saved contents of Local Storage Area. |
| * |
| * The LSCSA represents state that is primarily saved and |
| * restored by SPU-side code. |
| */ |
| struct spu_lscsa { |
| struct spu_reg128 gprs[128]; |
| struct spu_reg128 fpcr; |
| struct spu_reg128 decr; |
| struct spu_reg128 decr_status; |
| struct spu_reg128 ppu_mb; |
| struct spu_reg128 ppuint_mb; |
| struct spu_reg128 tag_mask; |
| struct spu_reg128 event_mask; |
| struct spu_reg128 srr0; |
| struct spu_reg128 stopped_status; |
| |
| /* |
| * 'ls' must be page-aligned on all configurations. |
| * Since we don't want to rely on having the spu-gcc |
| * installed to build the kernel and this structure |
| * is used in the SPU-side code, make it 64k-page |
| * aligned for now. |
| */ |
| unsigned char ls[LS_SIZE] __attribute__((aligned(65536))); |
| }; |
| |
| #ifndef __SPU__ |
| /* |
| * struct spu_problem_collapsed - condensed problem state area, w/o pads. |
| */ |
| struct spu_problem_collapsed { |
| u64 spc_mssync_RW; |
| u32 mfc_lsa_W; |
| u32 unused_pad0; |
| u64 mfc_ea_W; |
| union mfc_tag_size_class_cmd mfc_union_W; |
| u32 dma_qstatus_R; |
| u32 dma_querytype_RW; |
| u32 dma_querymask_RW; |
| u32 dma_tagstatus_R; |
| u32 pu_mb_R; |
| u32 spu_mb_W; |
| u32 mb_stat_R; |
| u32 spu_runcntl_RW; |
| u32 spu_status_R; |
| u32 spu_spc_R; |
| u32 spu_npc_RW; |
| u32 signal_notify1; |
| u32 signal_notify2; |
| u32 unused_pad1; |
| }; |
| |
| /* |
| * struct spu_priv1_collapsed - condensed privileged 1 area, w/o pads. |
| */ |
| struct spu_priv1_collapsed { |
| u64 mfc_sr1_RW; |
| u64 mfc_lpid_RW; |
| u64 spu_idr_RW; |
| u64 mfc_vr_RO; |
| u64 spu_vr_RO; |
| u64 int_mask_class0_RW; |
| u64 int_mask_class1_RW; |
| u64 int_mask_class2_RW; |
| u64 int_stat_class0_RW; |
| u64 int_stat_class1_RW; |
| u64 int_stat_class2_RW; |
| u64 int_route_RW; |
| u64 mfc_atomic_flush_RW; |
| u64 resource_allocation_groupID_RW; |
| u64 resource_allocation_enable_RW; |
| u64 mfc_fir_R; |
| u64 mfc_fir_status_or_W; |
| u64 mfc_fir_status_and_W; |
| u64 mfc_fir_mask_R; |
| u64 mfc_fir_mask_or_W; |
| u64 mfc_fir_mask_and_W; |
| u64 mfc_fir_chkstp_enable_RW; |
| u64 smf_sbi_signal_sel; |
| u64 smf_ato_signal_sel; |
| u64 tlb_index_hint_RO; |
| u64 tlb_index_W; |
| u64 tlb_vpn_RW; |
| u64 tlb_rpn_RW; |
| u64 tlb_invalidate_entry_W; |
| u64 tlb_invalidate_all_W; |
| u64 smm_hid; |
| u64 mfc_accr_RW; |
| u64 mfc_dsisr_RW; |
| u64 mfc_dar_RW; |
| u64 rmt_index_RW; |
| u64 rmt_data1_RW; |
| u64 mfc_dsir_R; |
| u64 mfc_lsacr_RW; |
| u64 mfc_lscrr_R; |
| u64 mfc_tclass_id_RW; |
| u64 mfc_rm_boundary; |
| u64 smf_dma_signal_sel; |
| u64 smm_signal_sel; |
| u64 mfc_cer_R; |
| u64 pu_ecc_cntl_RW; |
| u64 pu_ecc_stat_RW; |
| u64 spu_ecc_addr_RW; |
| u64 spu_err_mask_RW; |
| u64 spu_trig0_sel; |
| u64 spu_trig1_sel; |
| u64 spu_trig2_sel; |
| u64 spu_trig3_sel; |
| u64 spu_trace_sel; |
| u64 spu_event0_sel; |
| u64 spu_event1_sel; |
| u64 spu_event2_sel; |
| u64 spu_event3_sel; |
| u64 spu_trace_cntl; |
| }; |
| |
| /* |
| * struct spu_priv2_collapsed - condensed priviliged 2 area, w/o pads. |
| */ |
| struct spu_priv2_collapsed { |
| u64 slb_index_W; |
| u64 slb_esid_RW; |
| u64 slb_vsid_RW; |
| u64 slb_invalidate_entry_W; |
| u64 slb_invalidate_all_W; |
| struct mfc_cq_sr spuq[16]; |
| struct mfc_cq_sr puq[8]; |
| u64 mfc_control_RW; |
| u64 puint_mb_R; |
| u64 spu_privcntl_RW; |
| u64 spu_lslr_RW; |
| u64 spu_chnlcntptr_RW; |
| u64 spu_chnlcnt_RW; |
| u64 spu_chnldata_RW; |
| u64 spu_cfg_RW; |
| u64 spu_tag_status_query_RW; |
| u64 spu_cmd_buf1_RW; |
| u64 spu_cmd_buf2_RW; |
| u64 spu_atomic_status_RW; |
| }; |
| |
| /** |
| * struct spu_state |
| * @lscsa: Local Store Context Save Area. |
| * @prob: Collapsed Problem State Area, w/o pads. |
| * @priv1: Collapsed Privileged 1 Area, w/o pads. |
| * @priv2: Collapsed Privileged 2 Area, w/o pads. |
| * @spu_chnlcnt_RW: Array of saved channel counts. |
| * @spu_chnldata_RW: Array of saved channel data. |
| * @suspend_time: Time stamp when decrementer disabled. |
| * |
| * Structure representing the whole of the SPU |
| * context save area (CSA). This struct contains |
| * all of the state necessary to suspend and then |
| * later optionally resume execution of an SPU |
| * context. |
| * |
| * The @lscsa region is by far the largest, and is |
| * allocated separately so that it may either be |
| * pinned or mapped to/from application memory, as |
| * appropriate for the OS environment. |
| */ |
| struct spu_state { |
| struct spu_lscsa *lscsa; |
| #ifdef CONFIG_SPU_FS_64K_LS |
| int use_big_pages; |
| /* One struct page per 64k page */ |
| #define SPU_LSCSA_NUM_BIG_PAGES (sizeof(struct spu_lscsa) / 0x10000) |
| struct page *lscsa_pages[SPU_LSCSA_NUM_BIG_PAGES]; |
| #endif |
| struct spu_problem_collapsed prob; |
| struct spu_priv1_collapsed priv1; |
| struct spu_priv2_collapsed priv2; |
| u64 spu_chnlcnt_RW[32]; |
| u64 spu_chnldata_RW[32]; |
| u32 spu_mailbox_data[4]; |
| u32 pu_mailbox_data[1]; |
| u64 dar, dsisr; |
| unsigned long suspend_time; |
| spinlock_t register_lock; |
| }; |
| |
| extern int spu_init_csa(struct spu_state *csa); |
| extern void spu_fini_csa(struct spu_state *csa); |
| extern int spu_save(struct spu_state *prev, struct spu *spu); |
| extern int spu_restore(struct spu_state *new, struct spu *spu); |
| extern int spu_switch(struct spu_state *prev, struct spu_state *new, |
| struct spu *spu); |
| extern int spu_alloc_lscsa(struct spu_state *csa); |
| extern void spu_free_lscsa(struct spu_state *csa); |
| |
| #endif /* !__SPU__ */ |
| #endif /* __KERNEL__ */ |
| #endif /* !__ASSEMBLY__ */ |
| #endif /* _SPU_CSA_H_ */ |
