diff options
| author | Felix Manlunas <felix.manlunas@cavium.com> | 2016-12-30 04:04:47 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2016-12-30 06:26:03 +0300 |
| commit | 15d3afcc051f74d04a285c08594629172a1a9131 (patch) | |
| tree | 421f3786660ff2904956c38b2e78e7957598bc62 /drivers/net/ethernet/cavium/liquidio/octeon_console.c | |
| parent | 3a543ef479868e36c95935de320608a7e41466ca (diff) | |
| download | linux-15d3afcc051f74d04a285c08594629172a1a9131.tar.xz | |
liquidio: optimize reads from Octeon PCI console
Reads from Octeon PCI console are inefficient because before each read
operation, a dynamic mapping to Octeon DRAM is set up. This patch replaces
the repeated setup of a dynamic mapping with a one-time setup of a static
mapping.
Signed-off-by: Felix Manlunas <felix.manlunas@cavium.com>
Signed-off-by: Raghu Vatsavayi <raghu.vatsavayi@cavium.com>
Signed-off-by: Derek Chickles <derek.chickles@cavium.com>
Signed-off-by: Satanand Burla <satananda.burla@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/cavium/liquidio/octeon_console.c')
| -rw-r--r-- | drivers/net/ethernet/cavium/liquidio/octeon_console.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/net/ethernet/cavium/liquidio/octeon_console.c b/drivers/net/ethernet/cavium/liquidio/octeon_console.c index 3265e0b7923e..42b673dce533 100644 --- a/drivers/net/ethernet/cavium/liquidio/octeon_console.c +++ b/drivers/net/ethernet/cavium/liquidio/octeon_console.c @@ -549,6 +549,16 @@ int octeon_init_consoles(struct octeon_device *oct) return ret; } + /* Dedicate one of Octeon's BAR1 index registers to create a static + * mapping to a region of Octeon DRAM that contains the PCI console + * named block. + */ + oct->console_nb_info.bar1_index = BAR1_INDEX_STATIC_MAP; + oct->fn_list.bar1_idx_setup(oct, addr, oct->console_nb_info.bar1_index, + true); + oct->console_nb_info.dram_region_base = addr + & ~(OCTEON_BAR1_ENTRY_SIZE - 1ULL); + /* num_consoles > 0, is an indication that the consoles * are accessible */ |