#include <linux/mm.h>
#include <linux/vmalloc.h>
#include <linux/smp.h>
-#include <linux/smp_lock.h>
#include <linux/stddef.h>
#include <linux/unistd.h>
}
#endif /* debug */
-#define POLL_WHILE_FALSE(_c) POLL_WHILE_TRUE(!(_c))
+#define POLL_WHILE_FALSE(_c) POLL_WHILE_TRUE(!(_c))
static inline void acquire_spu_lock(struct spu *spu)
{
*/
if (in_be64(&priv2->mfc_control_RW) & MFC_CNTL_DECREMENTER_RUNNING) {
csa->priv2.mfc_control_RW |= MFC_CNTL_DECREMENTER_RUNNING;
- csa->suspend_time = get_cycles();
- out_be64(&priv2->spu_chnlcntptr_RW, 7ULL);
- eieio();
- csa->spu_chnldata_RW[7] = in_be64(&priv2->spu_chnldata_RW);
- eieio();
} else {
csa->priv2.mfc_control_RW &= ~MFC_CNTL_DECREMENTER_RUNNING;
}
* Write MFC_CNTL[Dh] set to a '1' to halt
* the decrementer.
*/
- out_be64(&priv2->mfc_control_RW, MFC_CNTL_DECREMENTER_HALTED);
+ out_be64(&priv2->mfc_control_RW,
+ MFC_CNTL_DECREMENTER_HALTED | MFC_CNTL_SUSPEND_MASK);
eieio();
}
csa->prob.dma_querytype_RW = in_be32(&prob->dma_querytype_RW);
}
+static inline void save_ppu_tagstatus(struct spu_state *csa, struct spu *spu)
+{
+ struct spu_problem __iomem *prob = spu->problem;
+
+ /* Save the Prxy_TagStatus register in the CSA.
+ *
+ * It is unnecessary to restore dma_tagstatus_R, however,
+ * dma_tagstatus_R in the CSA is accessed via backing_ops, so
+ * we must save it.
+ */
+ csa->prob.dma_tagstatus_R = in_be32(&prob->dma_tagstatus_R);
+}
+
static inline void save_mfc_csr_tsq(struct spu_state *csa, struct spu *spu)
{
struct spu_priv2 __iomem *priv2 = spu->priv2;
static inline void save_ch_part1(struct spu_state *csa, struct spu *spu)
{
struct spu_priv2 __iomem *priv2 = spu->priv2;
- u64 idx, ch_indices[7] = { 0UL, 3UL, 4UL, 24UL, 25UL, 27UL };
+ u64 idx, ch_indices[] = { 0UL, 3UL, 4UL, 24UL, 25UL, 27UL };
int i;
/* Save, Step 42:
csa->spu_chnldata_RW[1] = in_be64(&priv2->spu_chnldata_RW);
/* Save the following CH: [0,3,4,24,25,27] */
- for (i = 0; i < 7; i++) {
+ for (i = 0; i < ARRAY_SIZE(ch_indices); i++) {
idx = ch_indices[i];
out_be64(&priv2->spu_chnlcntptr_RW, idx);
eieio();
static inline void reset_ch_part1(struct spu_state *csa, struct spu *spu)
{
struct spu_priv2 __iomem *priv2 = spu->priv2;
- u64 ch_indices[7] = { 0UL, 3UL, 4UL, 24UL, 25UL, 27UL };
+ u64 ch_indices[] = { 0UL, 3UL, 4UL, 24UL, 25UL, 27UL };
u64 idx;
int i;
out_be64(&priv2->spu_chnldata_RW, 0UL);
/* Reset the following CH: [0,3,4,24,25,27] */
- for (i = 0; i < 7; i++) {
+ for (i = 0; i < ARRAY_SIZE(ch_indices); i++) {
idx = ch_indices[i];
out_be64(&priv2->spu_chnlcntptr_RW, idx);
eieio();
cycles_t resume_time = get_cycles();
cycles_t delta_time = resume_time - csa->suspend_time;
+ csa->lscsa->decr_status.slot[0] = SPU_DECR_STATUS_RUNNING;
+ if (csa->lscsa->decr.slot[0] < delta_time) {
+ csa->lscsa->decr_status.slot[0] |=
+ SPU_DECR_STATUS_WRAPPED;
+ }
+
csa->lscsa->decr.slot[0] -= delta_time;
+ } else {
+ csa->lscsa->decr_status.slot[0] = 0;
}
}
* "wrapped" flag is set, OR in a '1' to
* CSA.SPU_Event_Status[Tm].
*/
- if (csa->lscsa->decr_status.slot[0] == 1) {
+ if (csa->lscsa->decr_status.slot[0] & SPU_DECR_STATUS_WRAPPED) {
csa->spu_chnldata_RW[0] |= 0x20;
}
- if ((csa->lscsa->decr_status.slot[0] == 1) &&
+ if ((csa->lscsa->decr_status.slot[0] & SPU_DECR_STATUS_WRAPPED) &&
(csa->spu_chnlcnt_RW[0] == 0 &&
((csa->spu_chnldata_RW[2] & 0x20) == 0x0) &&
((csa->spu_chnldata_RW[0] & 0x20) != 0x1))) {
static inline void restore_ch_part1(struct spu_state *csa, struct spu *spu)
{
struct spu_priv2 __iomem *priv2 = spu->priv2;
- u64 idx, ch_indices[7] = { 0UL, 3UL, 4UL, 24UL, 25UL, 27UL };
+ u64 idx, ch_indices[] = { 0UL, 3UL, 4UL, 24UL, 25UL, 27UL };
int i;
/* Restore, Step 59:
+ * Restore the following CH: [0,3,4,24,25,27]
*/
-
- /* Restore CH 1 without count */
- out_be64(&priv2->spu_chnlcntptr_RW, 1);
- out_be64(&priv2->spu_chnldata_RW, csa->spu_chnldata_RW[1]);
-
- /* Restore the following CH: [0,3,4,24,25,27] */
- for (i = 0; i < 7; i++) {
+ for (i = 0; i < ARRAY_SIZE(ch_indices); i++) {
idx = ch_indices[i];
out_be64(&priv2->spu_chnlcntptr_RW, idx);
eieio();
save_mfc_queues(prev, spu); /* Step 19. */
save_ppu_querymask(prev, spu); /* Step 20. */
save_ppu_querytype(prev, spu); /* Step 21. */
+ save_ppu_tagstatus(prev, spu); /* NEW. */
save_mfc_csr_tsq(prev, spu); /* Step 22. */
save_mfc_csr_cmd(prev, spu); /* Step 23. */
save_mfc_csr_ato(prev, spu); /* Step 24. */
reset_spu_privcntl(prev, spu); /* Step 16. */
reset_spu_lslr(prev, spu); /* Step 17. */
setup_mfc_sr1(prev, spu); /* Step 18. */
- spu_invalidate_slbs(spu); /* Step 19. */
+ spu_invalidate_slbs(spu); /* Step 19. */
reset_ch_part1(prev, spu); /* Step 20. */
reset_ch_part2(prev, spu); /* Step 21. */
enable_interrupts(prev, spu); /* Step 22. */
int rc;
acquire_spu_lock(spu); /* Step 1. */
+ prev->dar = spu->dar;
+ prev->dsisr = spu->dsisr;
+ spu->dar = 0;
+ spu->dsisr = 0;
rc = __do_spu_save(prev, spu); /* Steps 2-53. */
release_spu_lock(spu);
if (rc != 0 && rc != 2 && rc != 6) {
acquire_spu_lock(spu);
harvest(NULL, spu);
- spu->dar = 0;
- spu->dsisr = 0;
spu->slb_replace = 0;
+ new->dar = 0;
+ new->dsisr = 0;
spu->class_0_pending = 0;
rc = __do_spu_restore(new, spu);
release_spu_lock(spu);
* as it is by far the largest of the context save regions,
* and may need to be pinned or otherwise specially aligned.
*/
-void spu_init_csa(struct spu_state *csa)
+int spu_init_csa(struct spu_state *csa)
{
- struct spu_lscsa *lscsa;
- unsigned char *p;
+ int rc;
if (!csa)
- return;
+ return -EINVAL;
memset(csa, 0, sizeof(struct spu_state));
- lscsa = vmalloc(sizeof(struct spu_lscsa));
- if (!lscsa)
- return;
+ rc = spu_alloc_lscsa(csa);
+ if (rc)
+ return rc;
- memset(lscsa, 0, sizeof(struct spu_lscsa));
- csa->lscsa = lscsa;
spin_lock_init(&csa->register_lock);
- /* Set LS pages reserved to allow for user-space mapping. */
- for (p = lscsa->ls; p < lscsa->ls + LS_SIZE; p += PAGE_SIZE)
- SetPageReserved(vmalloc_to_page(p));
-
init_prob(csa);
init_priv1(csa);
init_priv2(csa);
+
+ return 0;
}
EXPORT_SYMBOL_GPL(spu_init_csa);
void spu_fini_csa(struct spu_state *csa)
{
- /* Clear reserved bit before vfree. */
- unsigned char *p;
- for (p = csa->lscsa->ls; p < csa->lscsa->ls + LS_SIZE; p += PAGE_SIZE)
- ClearPageReserved(vmalloc_to_page(p));
-
- vfree(csa->lscsa);
+ spu_free_lscsa(csa);
}
EXPORT_SYMBOL_GPL(spu_fini_csa);