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| author | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2017-09-10 17:35:58 +1000 |
|---|---|---|
| committer | Stewart Smith <stewart@linux.vnet.ibm.com> | 2017-09-12 22:52:08 -0500 |
| commit | f02d13272ac799c3b053c7d4f47354fa870eae1b (patch) | |
| tree | 8f63af3abdfccfdd00d0ecaaae1b16cf9e6cd9c4 /hw | |
| parent | 443b564523756712bcf79c4ff85abc6936c153dc (diff) | |
| download | skiboot-f02d13272ac799c3b053c7d4f47354fa870eae1b.zip skiboot-f02d13272ac799c3b053c7d4f47354fa870eae1b.tar.gz skiboot-f02d13272ac799c3b053c7d4f47354fa870eae1b.tar.bz2 | |
xive: Add debug code to check initial cache updates
This adds debug code to check that the initial updates of
in-memory VPs and EQs via the cache watch and cache scrub
facilities has worked properly.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
Diffstat (limited to 'hw')
| -rw-r--r-- | hw/xive.c | 47 |
1 files changed, 47 insertions, 0 deletions
@@ -43,9 +43,11 @@ #ifdef DEBUG #define XIVE_DEBUG_DUPLICATES #define XIVE_PERCPU_LOG +#define XIVE_DEBUG_INIT_CACHE_UPDATES #else #undef XIVE_DEBUG_DUPLICATES #undef XIVE_PERCPU_LOG +#undef XIVE_DEBUG_INIT_CACHE_UPDATES #endif /* @@ -2892,12 +2894,57 @@ static void xive_setup_hw_for_emu(struct xive_cpu_state *xs) xs->eq_idx + XIVE_EMULATION_PRIO, 0, 4, &eq, false, true); +#ifdef XIVE_DEBUG_INIT_CACHE_UPDATES + if (1) { + struct xive_eq *eq_p = xive_get_eq(x_eq, + xs->eq_idx + + XIVE_EMULATION_PRIO); + struct xive_eq eq2; + + assert(eq_p); + eq2 = *eq_p; + if (memcmp(&eq, &eq2, sizeof(eq)) != 0) { + xive_err(x_eq, "EQ update mismatch idx %d\n", + xs->eq_idx); + xive_err(x_eq, "want: %08x %08x %08x %08x\n", + eq.w0, eq.w1, eq.w2, eq.w3); + xive_err(x_eq, " %08x %08x %08x %08x\n", + eq.w4, eq.w5, eq.w6, eq.w7); + xive_err(x_eq, "got : %08x %08x %08x %08x\n", + eq2.w0, eq2.w1, eq2.w2, eq2.w3); + xive_err(x_eq, " %08x %08x %08x %08x\n", + eq2.w4, eq2.w5, eq2.w6, eq2.w7); + } + } +#endif /* Initialize/enable the VP */ xive_init_default_vp(&vp, xs->eq_blk, xs->eq_idx); /* Use the cache watch to write it out */ xive_vpc_cache_update(x_vp, xs->vp_blk, xs->vp_idx, 0, 8, &vp, false, true); + + /* Debug code */ +#ifdef XIVE_DEBUG_INIT_CACHE_UPDATES + if (1) { + struct xive_vp *vp_p = xive_get_vp(x_vp, xs->vp_idx); + struct xive_vp vp2; + + assert(vp_p); + vp2 = *vp_p; + if (memcmp(&vp, &vp2, sizeof(vp)) != 0) { + xive_err(x_vp, "VP update mismatch idx %d\n", xs->vp_idx); + xive_err(x_vp, "want: %08x %08x %08x %08x\n", + vp.w0, vp.w1, vp.w2, vp.w3); + xive_err(x_vp, " %08x %08x %08x %08x\n", + vp.w4, vp.w5, vp.w6, vp.w7); + xive_err(x_vp, "got : %08x %08x %08x %08x\n", + vp2.w0, vp2.w1, vp2.w2, vp2.w3); + xive_err(x_vp, " %08x %08x %08x %08x\n", + vp2.w4, vp2.w5, vp2.w6, vp2.w7); + } + } +#endif } static void xive_init_cpu_emulation(struct xive_cpu_state *xs, |