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| author | Deepthi Dharwar <deepthi@linux.vnet.ibm.com> | 2014-07-24 12:01:43 +0530 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2014-07-25 14:10:51 +1000 |
| commit | 7c498050b5404a77023e0cea35cba2f74150e48b (patch) | |
| tree | 37ab4008f91f50df81d91654671c9beca85334e8 /hw/fsp/fsp-elog-write.c | |
| parent | 6e993f3fffcbe96d3760c5ebb5815245358fd367 (diff) | |
| download | skiboot-7c498050b5404a77023e0cea35cba2f74150e48b.zip skiboot-7c498050b5404a77023e0cea35cba2f74150e48b.tar.gz skiboot-7c498050b5404a77023e0cea35cba2f74150e48b.tar.bz2 | |
elog: Reserve TCE buffer for pushing logs to the host
Allocate 16K buffer to push PEL logs to the host in case of
unresponsive FSP.
Signed-off-by: Deepthi Dharwar <deepthi@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'hw/fsp/fsp-elog-write.c')
| -rw-r--r-- | hw/fsp/fsp-elog-write.c | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/hw/fsp/fsp-elog-write.c b/hw/fsp/fsp-elog-write.c index c886b50..3802676 100644 --- a/hw/fsp/fsp-elog-write.c +++ b/hw/fsp/fsp-elog-write.c @@ -50,12 +50,15 @@ static uint32_t sapphire_elog_id = 0xB0000000; static uint32_t powernv_elog_id = 0xB1000000; /* log buffer to copy FSP log for READ */ -#define ELOG_WRITE_TO_FSP_BUFFER_SIZE 0x00050000 +#define ELOG_WRITE_TO_FSP_BUFFER_SIZE 0x00040000 static void *elog_write_to_fsp_buffer; #define ELOG_PANIC_WRITE_BUFFER_SIZE 0x0010000 static void *elog_panic_write_buffer; +#define ELOG_WRITE_TO_HOST_BUFFER_SIZE 0x0010000 +static void *elog_write_to_host_buffer; + struct opal_errorlog *panic_write_buffer; static int panic_write_buffer_valid; static uint32_t elog_write_retries; @@ -656,6 +659,13 @@ void fsp_elog_write_init(void) return; } + elog_write_to_host_buffer = memalign(TCE_PSIZE, + ELOG_WRITE_TO_HOST_BUFFER_SIZE); + if (!elog_write_to_host_buffer) { + prerror("FSP: could not allocate ELOG_WRITE_TO_HOST_BUFFER!\n"); + return; + } + /* Map TCEs */ fsp_tce_map(PSI_DMA_ELOG_PANIC_WRITE_BUF, elog_panic_write_buffer, PSI_DMA_ELOG_PANIC_WRITE_BUF_SZ); @@ -663,6 +673,9 @@ void fsp_elog_write_init(void) fsp_tce_map(PSI_DMA_ERRLOG_WRITE_BUF, elog_write_to_fsp_buffer, PSI_DMA_ERRLOG_WRITE_BUF_SZ); + fsp_tce_map(PSI_DMA_ELOG_WR_TO_HOST_BUF, elog_write_to_host_buffer, + PSI_DMA_ELOG_WR_TO_HOST_BUF_SZ); + /* pre-allocate memory for 64 records */ if (init_elog_write_free_list(ELOG_WRITE_MAX_RECORD)) { prerror("ELOG: Cannot allocate WRITE buffers to log errors!\n"); |