Date: Mon, 1 Aug 2022 15:07:15 +0900 (JST) From: Mori Hiroki <yamori813@yahoo.co.jp> To: Warner Losh <imp@bsdimp.com> Cc: "freebsd-mips@freebsd.org" <freebsd-mips@freebsd.org> Subject: Re: Re: DSP support Message-ID: <226189806.1427308.1659334035170.JavaMail.yahoo@mail.yahoo.co.jp> In-Reply-To: <CANCZdfqqRSj-SfpbcMcS1QLJ0KgXBF7%2BO8V8fTLL_gC45d1h%2BQ@mail.gmail.com> References: <1730355085.2141074.1652362306262.JavaMail.yahoo.ref@mail.yahoo.co.jp> <1730355085.2141074.1652362306262.JavaMail.yahoo@mail.yahoo.co.jp> <CANCZdfqqRSj-SfpbcMcS1QLJ0KgXBF7%2BO8V8fTLL_gC45d1h%2BQ@mail.gmail.com>
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Hi
Thanks for your reply.
First I do fixed crash bug by DSP instraction on 74K.
diff --git a/sys/mips/include/trap.h b/sys/mips/include/trap.h
index a88784f869c5..613df63c47e0 100644
--- a/sys/mips/include/trap.h
+++ b/sys/mips/include/trap.h
@@ -69,6 +69,7 @@
#define T_C2E 18 /* Exception from coprocessor 2 */
#define T_DWATCH 23 /* Data Watch address refer=
ence */
#define T_MCHECK 24 /* Received an MCHECK */
+#define T_DSP 26 /* Not enable DSP ASE */
#define T_VCED 31 /* Virtual coherency data *=
/
=20
#define T_USER 0x20 /* user-mode flag or'ed wit=
h type */
diff --git a/sys/mips/mips/trap.c b/sys/mips/mips/trap.c
index 50747ff85dd2..fb92c8dd0f24 100644
--- a/sys/mips/mips/trap.c
+++ b/sys/mips/mips/trap.c
@@ -894,6 +894,7 @@ trap(struct trapframe *trapframe)
}
=20
case T_RES_INST + T_USER:
+ case T_DSP + T_USER:
{
InstFmt inst;
inst =3D *(InstFmt *)(intptr_t)trapframe->pc;
----- Original Message -----
From: "Warner Losh" <imp@bsdimp.com>
To: "=E3=82=84 =E3=82=82=E3=82=8A" <yamori813@yahoo.co.jp>
Cc: "freebsd-mips@freebsd.org" <freebsd-mips@freebsd.org>
Date: 2022/05/13 =E9=87=91 03:56
Subject: Re: DSP support
On Thu, May 12, 2022 at 7:32 AM Mori Hiroki <yamori813@yahoo.co.jp> wrote:
Hi
=20
I want DSP support to FreeBSD 12.
=20
Ralink 24K have DPS v1.
=20
Ralink and Atheros 74k have DSP v1 and v2.
=20
I seem NetBSD support DPS on userland.
=20
Do you have advice something, please let me know.
At the highest level, if you want to use the DSP, you need to save and rest=
ore
its state when it's being used. NetBSD should have some code to snag for th=
at.
I'm not familiar enough with toolchains to know the extent to which you'd n=
eed
userland changes. But you can likely snag those from NetBSD as well, though
you may need to use an external toolchain to get support for DSP, since it'=
s
a bit of a niche part of the architecture.
Warner=20
I seem gcc 4.2.1 support mdsp option but not support mdspr2 option.
binutil 2.17.50 support dsp and dspr2 instruction.
I think not need external toolchain if we use only as by dsp and dpsr2.
Thanks
Hiroki Mori
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