diff options
| author | Jayachandran C <jchandra@broadcom.com> | 2013-06-10 06:30:00 (GMT) |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2013-06-13 15:46:41 (GMT) |
| commit | 2c952e06e4f57716109b609956eda28c900faac0 (patch) | |
| tree | 39dc9361773009cdcfdc1e0e1752b446259d7cef /arch/mips/kernel | |
| parent | 79f8511c83f13689913f54d2f189297c226ec064 (diff) | |
| download | linux-2c952e06e4f57716109b609956eda28c900faac0.tar.xz | |
MIPS: Move cop2 save/restore to switch_to()
Move the common code for saving and restoring platform specific COP2
registers to switch_to(). This will make supporting new platforms (like
Netlogic XLP) easier.
The platform specific COP2 definitions are to be specified in
asm/processor.h and in asm/cop2.h.
Signed-off-by: Jayachandran C <jchandra@broadcom.com>
Cc: linux-mips@linux-mips.org
Cc: ddaney.cavm@gmail.com
Patchwork: https://patchwork.linux-mips.org/patch/5411/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/kernel')
| -rw-r--r-- | arch/mips/kernel/octeon_switch.S | 27 |
1 files changed, 0 insertions, 27 deletions
diff --git a/arch/mips/kernel/octeon_switch.S b/arch/mips/kernel/octeon_switch.S index 0e23343..22e2aa1 100644 --- a/arch/mips/kernel/octeon_switch.S +++ b/arch/mips/kernel/octeon_switch.S @@ -40,33 +40,6 @@ cpu_save_nonscratch a0 LONG_S ra, THREAD_REG31(a0) - /* check if we need to save COP2 registers */ - PTR_L t2, TASK_THREAD_INFO(a0) - LONG_L t0, ST_OFF(t2) - bbit0 t0, 30, 1f - - /* Disable COP2 in the stored process state */ - li t1, ST0_CU2 - xor t0, t1 - LONG_S t0, ST_OFF(t2) - - /* Enable COP2 so we can save it */ - mfc0 t0, CP0_STATUS - or t0, t1 - mtc0 t0, CP0_STATUS - - /* Save COP2 */ - daddu a0, THREAD_CP2 - jal octeon_cop2_save - dsubu a0, THREAD_CP2 - - /* Disable COP2 now that we are done */ - mfc0 t0, CP0_STATUS - li t1, ST0_CU2 - xor t0, t1 - mtc0 t0, CP0_STATUS - -1: #if CONFIG_CAVIUM_OCTEON_CVMSEG_SIZE > 0 /* Check if we need to store CVMSEG state */ mfc0 t0, $11,7 /* CvmMemCtl */ |