Commit 56abcf24ff993291b20efd6e3402cd3d12f5cee2
Committed by
Linus Torvalds
Linus Torvalds
1 parent
e5ae6e82bf
Exists in
master
and in
7 other branches
gru: function to generate chipset IPI values
Create a function to generate the value that is written to the UV hub MMR to cause an IPI interrupt to be sent. The function will be used in the GRU message queue error recovery code that sends IPIs to nodes in remote partitions. Signed-off-by: Jack Steiner <steiner@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Showing 1 changed file with 20 additions and 4 deletions Side-by-side Diff
arch/x86/include/asm/uv/uv_hub.h
| ... | ... | @@ -172,6 +172,8 @@ |
| 172 | 172 | #define UV_LOCAL_MMR_SIZE (64UL * 1024 * 1024) |
| 173 | 173 | #define UV_GLOBAL_MMR32_SIZE (64UL * 1024 * 1024) |
| 174 | 174 | |
| 175 | +#define UV_GLOBAL_GRU_MMR_BASE 0x4000000 | |
| 176 | + | |
| 175 | 177 | #define UV_GLOBAL_MMR32_PNODE_SHIFT 15 |
| 176 | 178 | #define UV_GLOBAL_MMR64_PNODE_SHIFT 26 |
| 177 | 179 | |
| ... | ... | @@ -328,6 +330,15 @@ |
| 328 | 330 | } |
| 329 | 331 | |
| 330 | 332 | /* |
| 333 | + * Global MMR space addresses when referenced by the GRU. (GRU does | |
| 334 | + * NOT use socket addressing). | |
| 335 | + */ | |
| 336 | +static inline unsigned long uv_global_gru_mmr_address(int pnode, unsigned long offset) | |
| 337 | +{ | |
| 338 | + return UV_GLOBAL_GRU_MMR_BASE | offset | (pnode << uv_hub_info->m_val); | |
| 339 | +} | |
| 340 | + | |
| 341 | +/* | |
| 331 | 342 | * Access hub local MMRs. Faster than using global space but only local MMRs |
| 332 | 343 | * are accessible. |
| 333 | 344 | */ |
| ... | ... | @@ -454,6 +465,14 @@ |
| 454 | 465 | } |
| 455 | 466 | } |
| 456 | 467 | |
| 468 | +static unsigned long uv_hub_ipi_value(int apicid, int vector, int mode) | |
| 469 | +{ | |
| 470 | + return (1UL << UVH_IPI_INT_SEND_SHFT) | | |
| 471 | + ((apicid) << UVH_IPI_INT_APIC_ID_SHFT) | | |
| 472 | + (mode << UVH_IPI_INT_DELIVERY_MODE_SHFT) | | |
| 473 | + (vector << UVH_IPI_INT_VECTOR_SHFT); | |
| 474 | +} | |
| 475 | + | |
| 457 | 476 | static inline void uv_hub_send_ipi(int pnode, int apicid, int vector) |
| 458 | 477 | { |
| 459 | 478 | unsigned long val; |
| ... | ... | @@ -462,10 +481,7 @@ |
| 462 | 481 | if (vector == NMI_VECTOR) |
| 463 | 482 | dmode = dest_NMI; |
| 464 | 483 | |
| 465 | - val = (1UL << UVH_IPI_INT_SEND_SHFT) | | |
| 466 | - ((apicid) << UVH_IPI_INT_APIC_ID_SHFT) | | |
| 467 | - (dmode << UVH_IPI_INT_DELIVERY_MODE_SHFT) | | |
| 468 | - (vector << UVH_IPI_INT_VECTOR_SHFT); | |
| 484 | + val = uv_hub_ipi_value(apicid, vector, dmode); | |
| 469 | 485 | uv_write_global_mmr64(pnode, UVH_IPI_INT, val); |
| 470 | 486 | } |
| 471 | 487 |