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MIPS: Add detection of DSP ASE Revision 2.

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[ralf@linux-mips.org: This patch really only detects the ASE and passes its
existence on to userland via /proc/cpuinfo.  The DSP ASE Rev 2. adds new
resources but no resources that would need management by the kernel.]

Signed-off-by: Steven J. Hill <sjhill@mips.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/4165/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Steven J. Hill
2012-08-03 10:26:04 -05:00
committed by Ralf Baechle
parent f59a2d22a0
commit ee80f7c73d
5 changed files with 11 additions and 2 deletions
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6
arch/mips/kernel/cpu-probe.c
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@@ -142,7 +142,7 @@ int __cpuinitdata mips_dsp_disabled;
static int __init dsp_disable(char *s)
{
cpu_data[0].ases &= ~MIPS_ASE_DSP;
cpu_data[0].ases &= ~(MIPS_ASE_DSP | MIPS_ASE_DSP2P);
mips_dsp_disabled = 1;
return 1;
@@ -429,6 +429,8 @@ static inline unsigned int decode_config3(struct cpuinfo_mips *c)
c->options |= MIPS_CPU_RIXI;
if (config3 & MIPS_CONF3_DSP)
c->ases |= MIPS_ASE_DSP;
if (config3 & MIPS_CONF3_DSP2P)
c->ases |= MIPS_ASE_DSP2P;
if (config3 & MIPS_CONF3_VINT)
c->options |= MIPS_CPU_VINT;
if (config3 & MIPS_CONF3_VEIC)
@@ -1180,7 +1182,7 @@ __cpuinit void cpu_probe(void)
c->options &= ~MIPS_CPU_FPU;
if (mips_dsp_disabled)
c->ases &= ~MIPS_ASE_DSP;
c->ases &= ~(MIPS_ASE_DSP | MIPS_ASE_DSP2P);
if (c->options & MIPS_CPU_FPU) {
c->fpu_id = cpu_get_fpu_id();

1
arch/mips/kernel/proc.c
View File

@@ -70,6 +70,7 @@ static int show_cpuinfo(struct seq_file *m, void *v)
cpu_has_mips3d ? " mips3d" : "",
cpu_has_smartmips ? " smartmips" : "",
cpu_has_dsp ? " dsp" : "",
cpu_has_dsp2 ? " dsp2" : "",
cpu_has_mipsmt ? " mt" : ""
);
seq_printf(m, "shadow register sets\t: %d\n",