c25620d766
Add platform specific SPU run control routines to the spufs. The current spufs implementation uses the SPU master run control bit (MFC_SR1[S]) to control SPE execution, but the PS3 hypervisor does not support the use of this feature. This change adds the run control wrapper routies spu_enable_spu() and spu_disable_spu(). The bare metal routines use the master run control bit, and the PS3 specific routines use the priv2 run control register. An outstanding enhancement for the PS3 would be to add a guard to check for incorrect access to the spu problem state when the spu context is disabled. This check could be implemented with a flag added to the spu context that would inhibit mapping problem state pages, and a routine to unmap spu problem state pages. When the spu is enabled with ps3_enable_spu() the flag would be set allowing pages to be mapped, and when the spu is disabled with ps3_disable_spu() the flag would be cleared and mapped problem state pages would be unmapped. Signed-off-by: Masato Noguchi <Masato.Noguchi@jp.sony.com> Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com> Signed-off-by: Jeremy Kerr <jk@ozlabs.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
237 lines
5.7 KiB
C
237 lines
5.7 KiB
C
/*
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* Defines an spu hypervisor abstraction layer.
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*
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* Copyright 2006 Sony Corp.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#if !defined(_SPU_PRIV1_H)
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#define _SPU_PRIV1_H
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#if defined(__KERNEL__)
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#include <linux/types.h>
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struct spu;
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struct spu_context;
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/* access to priv1 registers */
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struct spu_priv1_ops {
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void (*int_mask_and) (struct spu *spu, int class, u64 mask);
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void (*int_mask_or) (struct spu *spu, int class, u64 mask);
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void (*int_mask_set) (struct spu *spu, int class, u64 mask);
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u64 (*int_mask_get) (struct spu *spu, int class);
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void (*int_stat_clear) (struct spu *spu, int class, u64 stat);
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u64 (*int_stat_get) (struct spu *spu, int class);
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void (*cpu_affinity_set) (struct spu *spu, int cpu);
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u64 (*mfc_dar_get) (struct spu *spu);
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u64 (*mfc_dsisr_get) (struct spu *spu);
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void (*mfc_dsisr_set) (struct spu *spu, u64 dsisr);
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void (*mfc_sdr_setup) (struct spu *spu);
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void (*mfc_sr1_set) (struct spu *spu, u64 sr1);
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u64 (*mfc_sr1_get) (struct spu *spu);
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void (*mfc_tclass_id_set) (struct spu *spu, u64 tclass_id);
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u64 (*mfc_tclass_id_get) (struct spu *spu);
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void (*tlb_invalidate) (struct spu *spu);
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void (*resource_allocation_groupID_set) (struct spu *spu, u64 id);
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u64 (*resource_allocation_groupID_get) (struct spu *spu);
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void (*resource_allocation_enable_set) (struct spu *spu, u64 enable);
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u64 (*resource_allocation_enable_get) (struct spu *spu);
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};
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extern const struct spu_priv1_ops* spu_priv1_ops;
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static inline void
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spu_int_mask_and (struct spu *spu, int class, u64 mask)
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{
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spu_priv1_ops->int_mask_and(spu, class, mask);
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}
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static inline void
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spu_int_mask_or (struct spu *spu, int class, u64 mask)
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{
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spu_priv1_ops->int_mask_or(spu, class, mask);
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}
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static inline void
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spu_int_mask_set (struct spu *spu, int class, u64 mask)
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{
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spu_priv1_ops->int_mask_set(spu, class, mask);
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}
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static inline u64
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spu_int_mask_get (struct spu *spu, int class)
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{
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return spu_priv1_ops->int_mask_get(spu, class);
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}
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static inline void
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spu_int_stat_clear (struct spu *spu, int class, u64 stat)
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{
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spu_priv1_ops->int_stat_clear(spu, class, stat);
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}
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static inline u64
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spu_int_stat_get (struct spu *spu, int class)
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{
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return spu_priv1_ops->int_stat_get (spu, class);
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}
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static inline void
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spu_cpu_affinity_set (struct spu *spu, int cpu)
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{
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spu_priv1_ops->cpu_affinity_set(spu, cpu);
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}
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static inline u64
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spu_mfc_dar_get (struct spu *spu)
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{
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return spu_priv1_ops->mfc_dar_get(spu);
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}
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static inline u64
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spu_mfc_dsisr_get (struct spu *spu)
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{
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return spu_priv1_ops->mfc_dsisr_get(spu);
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}
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static inline void
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spu_mfc_dsisr_set (struct spu *spu, u64 dsisr)
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{
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spu_priv1_ops->mfc_dsisr_set(spu, dsisr);
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}
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static inline void
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spu_mfc_sdr_setup (struct spu *spu)
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{
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spu_priv1_ops->mfc_sdr_setup(spu);
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}
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static inline void
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spu_mfc_sr1_set (struct spu *spu, u64 sr1)
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{
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spu_priv1_ops->mfc_sr1_set(spu, sr1);
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}
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static inline u64
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spu_mfc_sr1_get (struct spu *spu)
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{
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return spu_priv1_ops->mfc_sr1_get(spu);
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}
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static inline void
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spu_mfc_tclass_id_set (struct spu *spu, u64 tclass_id)
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{
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spu_priv1_ops->mfc_tclass_id_set(spu, tclass_id);
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}
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static inline u64
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spu_mfc_tclass_id_get (struct spu *spu)
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{
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return spu_priv1_ops->mfc_tclass_id_get(spu);
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}
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static inline void
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spu_tlb_invalidate (struct spu *spu)
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{
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spu_priv1_ops->tlb_invalidate(spu);
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}
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static inline void
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spu_resource_allocation_groupID_set (struct spu *spu, u64 id)
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{
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spu_priv1_ops->resource_allocation_groupID_set(spu, id);
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}
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static inline u64
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spu_resource_allocation_groupID_get (struct spu *spu)
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{
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return spu_priv1_ops->resource_allocation_groupID_get(spu);
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}
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static inline void
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spu_resource_allocation_enable_set (struct spu *spu, u64 enable)
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{
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spu_priv1_ops->resource_allocation_enable_set(spu, enable);
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}
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static inline u64
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spu_resource_allocation_enable_get (struct spu *spu)
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{
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return spu_priv1_ops->resource_allocation_enable_get(spu);
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}
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/* spu management abstraction */
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struct spu_management_ops {
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int (*enumerate_spus)(int (*fn)(void *data));
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int (*create_spu)(struct spu *spu, void *data);
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int (*destroy_spu)(struct spu *spu);
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void (*enable_spu)(struct spu_context *ctx);
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void (*disable_spu)(struct spu_context *ctx);
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int (*init_affinity)(void);
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};
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extern const struct spu_management_ops* spu_management_ops;
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static inline int
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spu_enumerate_spus (int (*fn)(void *data))
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{
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return spu_management_ops->enumerate_spus(fn);
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}
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static inline int
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spu_create_spu (struct spu *spu, void *data)
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{
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return spu_management_ops->create_spu(spu, data);
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}
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static inline int
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spu_destroy_spu (struct spu *spu)
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{
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return spu_management_ops->destroy_spu(spu);
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}
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static inline int
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spu_init_affinity (void)
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{
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return spu_management_ops->init_affinity();
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}
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static inline void
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spu_enable_spu (struct spu_context *ctx)
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{
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spu_management_ops->enable_spu(ctx);
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}
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static inline void
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spu_disable_spu (struct spu_context *ctx)
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{
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spu_management_ops->disable_spu(ctx);
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}
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/*
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* The declarations folowing are put here for convenience
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* and only intended to be used by the platform setup code.
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*/
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extern const struct spu_priv1_ops spu_priv1_mmio_ops;
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extern const struct spu_priv1_ops spu_priv1_beat_ops;
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extern const struct spu_management_ops spu_management_of_ops;
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#endif /* __KERNEL__ */
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#endif
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