diff options
Diffstat (limited to 'arch/powerpc/platforms/cell/spufs/switch.c')
| -rw-r--r-- | arch/powerpc/platforms/cell/spufs/switch.c | 63 |
1 files changed, 53 insertions, 10 deletions
diff --git a/arch/powerpc/platforms/cell/spufs/switch.c b/arch/powerpc/platforms/cell/spufs/switch.c index 0f782ca662ba..c08981ff7fc6 100644 --- a/arch/powerpc/platforms/cell/spufs/switch.c +++ b/arch/powerpc/platforms/cell/spufs/switch.c @@ -102,7 +102,7 @@ static inline int check_spu_isolate(struct spu_state *csa, struct spu *spu) * saved at this time. */ isolate_state = SPU_STATUS_ISOLATED_STATE | - SPU_STATUS_ISOLATED_LOAD_STAUTUS | SPU_STATUS_ISOLATED_EXIT_STAUTUS; + SPU_STATUS_ISOLATED_LOAD_STATUS | SPU_STATUS_ISOLATED_EXIT_STATUS; return (in_be32(&prob->spu_status_R) & isolate_state) ? 1 : 0; } @@ -1046,12 +1046,12 @@ static inline int suspend_spe(struct spu_state *csa, struct spu *spu) */ if (in_be32(&prob->spu_status_R) & SPU_STATUS_RUNNING) { if (in_be32(&prob->spu_status_R) & - SPU_STATUS_ISOLATED_EXIT_STAUTUS) { + SPU_STATUS_ISOLATED_EXIT_STATUS) { POLL_WHILE_TRUE(in_be32(&prob->spu_status_R) & SPU_STATUS_RUNNING); } if ((in_be32(&prob->spu_status_R) & - SPU_STATUS_ISOLATED_LOAD_STAUTUS) + SPU_STATUS_ISOLATED_LOAD_STATUS) || (in_be32(&prob->spu_status_R) & SPU_STATUS_ISOLATED_STATE)) { out_be32(&prob->spu_runcntl_RW, SPU_RUNCNTL_STOP); @@ -1085,7 +1085,7 @@ static inline void clear_spu_status(struct spu_state *csa, struct spu *spu) */ if (!(in_be32(&prob->spu_status_R) & SPU_STATUS_RUNNING)) { if (in_be32(&prob->spu_status_R) & - SPU_STATUS_ISOLATED_EXIT_STAUTUS) { + SPU_STATUS_ISOLATED_EXIT_STATUS) { spu_mfc_sr1_set(spu, MFC_STATE1_MASTER_RUN_CONTROL_MASK); eieio(); @@ -1095,7 +1095,7 @@ static inline void clear_spu_status(struct spu_state *csa, struct spu *spu) SPU_STATUS_RUNNING); } if ((in_be32(&prob->spu_status_R) & - SPU_STATUS_ISOLATED_LOAD_STAUTUS) + SPU_STATUS_ISOLATED_LOAD_STATUS) || (in_be32(&prob->spu_status_R) & SPU_STATUS_ISOLATED_STATE)) { spu_mfc_sr1_set(spu, @@ -1916,6 +1916,51 @@ static void save_lscsa(struct spu_state *prev, struct spu *spu) wait_spu_stopped(prev, spu); /* Step 57. */ } +static void force_spu_isolate_exit(struct spu *spu) +{ + struct spu_problem __iomem *prob = spu->problem; + struct spu_priv2 __iomem *priv2 = spu->priv2; + + /* Stop SPE execution and wait for completion. */ + out_be32(&prob->spu_runcntl_RW, SPU_RUNCNTL_STOP); + iobarrier_rw(); + POLL_WHILE_TRUE(in_be32(&prob->spu_status_R) & SPU_STATUS_RUNNING); + + /* Restart SPE master runcntl. */ + spu_mfc_sr1_set(spu, MFC_STATE1_MASTER_RUN_CONTROL_MASK); + iobarrier_w(); + + /* Initiate isolate exit request and wait for completion. */ + out_be64(&priv2->spu_privcntl_RW, 4LL); + iobarrier_w(); + out_be32(&prob->spu_runcntl_RW, 2); + iobarrier_rw(); + POLL_WHILE_FALSE((in_be32(&prob->spu_status_R) + & SPU_STATUS_STOPPED_BY_STOP)); + + /* Reset load request to normal. */ + out_be64(&priv2->spu_privcntl_RW, SPU_PRIVCNT_LOAD_REQUEST_NORMAL); + iobarrier_w(); +} + +/** + * stop_spu_isolate + * Check SPU run-control state and force isolated + * exit function as necessary. + */ +static void stop_spu_isolate(struct spu *spu) +{ + struct spu_problem __iomem *prob = spu->problem; + + if (in_be32(&prob->spu_status_R) & SPU_STATUS_ISOLATED_STATE) { + /* The SPU is in isolated state; the only way + * to get it out is to perform an isolated + * exit (clean) operation. + */ + force_spu_isolate_exit(spu); + } +} + static void harvest(struct spu_state *prev, struct spu *spu) { /* @@ -1928,6 +1973,7 @@ static void harvest(struct spu_state *prev, struct spu *spu) inhibit_user_access(prev, spu); /* Step 3. */ terminate_spu_app(prev, spu); /* Step 4. */ set_switch_pending(prev, spu); /* Step 5. */ + stop_spu_isolate(spu); /* NEW. */ remove_other_spu_access(prev, spu); /* Step 6. */ suspend_mfc(prev, spu); /* Step 7. */ wait_suspend_mfc_complete(prev, spu); /* Step 8. */ @@ -2096,11 +2142,11 @@ int spu_save(struct spu_state *prev, struct spu *spu) acquire_spu_lock(spu); /* Step 1. */ rc = __do_spu_save(prev, spu); /* Steps 2-53. */ release_spu_lock(spu); - if (rc) { + if (rc != 0 && rc != 2 && rc != 6) { panic("%s failed on SPU[%d], rc=%d.\n", __func__, spu->number, rc); } - return rc; + return 0; } EXPORT_SYMBOL_GPL(spu_save); @@ -2165,9 +2211,6 @@ static void init_priv1(struct spu_state *csa) MFC_STATE1_PROBLEM_STATE_MASK | MFC_STATE1_RELOCATE_MASK | MFC_STATE1_BUS_TLBIE_MASK; - /* Set storage description. */ - csa->priv1.mfc_sdr_RW = mfspr(SPRN_SDR1); - /* Enable OS-specific set of interrupts. */ csa->priv1.int_mask_class0_RW = CLASS0_ENABLE_DMA_ALIGNMENT_INTR | CLASS0_ENABLE_INVALID_DMA_COMMAND_INTR | |