From nobody Tue Feb 10 20:51:38 2026 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=fail; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail(p=none dis=none) header.from=ilande.co.uk Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1734004109243903.5831992750462; Thu, 12 Dec 2024 03:48:29 -0800 (PST) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1tLheo-0006uG-Rb; Thu, 12 Dec 2024 06:47:04 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1tLheh-0006tF-QP for qemu-devel@nongnu.org; Thu, 12 Dec 2024 06:46:56 -0500 Received: from mail.ilande.co.uk ([2001:41c9:1:41f::167]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1tLhef-0007D4-8O for qemu-devel@nongnu.org; Thu, 12 Dec 2024 06:46:55 -0500 Received: from [2a02:8012:c93d:0:260e:bf57:a4e9:8142] (helo=cheesecake.fritz.box) by mail.ilande.co.uk with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1tLhe8-00070a-Pr; Thu, 12 Dec 2024 11:46:21 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=ilande.co.uk; s=20220518; h=Subject:Content-Transfer-Encoding:MIME-Version: References:In-Reply-To:Message-Id:Date:To:From:Sender:Reply-To:Cc: Content-Type:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID; bh=Xamy9ecC/dARJik6sRblXn/13armzWcRA+Fi5uR+Yno=; b=dHpVi/nGuqS991lQzYGpMGKNtK nH11oo1xZbJUOFBbBk7ycJmXoqAihgC/NrZ0p4Wn1pbY+d1LR6qkQpeQ2CK/AeTL8yQ9k25pgVRcV KL1AiquPwyoiWHN5zz34AN/A2ZGVGtDD6lrrjP7qjZK+n2VzDw4Atj9tr4LmmyBAbeR6kXiwThmkh cPFV5Ci3cQ2kVQboQ1QOECrJgJmF/5n8mqjxNnX8mSt6J6pySmQiK/hw3VEaOnAY+HsMaTtPvkOi7 QYdQu9ih7k7u8m1VcPPH0uEId+ji/m8A518uVs1IaLOkZAUdrC5Q6eLXam8dVThfnxBHvS386QpTJ /eP7eITkNwBp5mh608BZa+50ItD6AmQpaKcpgf59XxVNke/6G3IGxdeLuaRkkBhN+gunrsdZ3r6GA bC0LWwddIKx0l1ooLN4QzlJRso7slH00RGn/vOuo66ldk8p+jVwRUk2eAfgXdL1mpZlX2/QEMWQS8 Zkuu8BwCiYhAyKmxO5JaBk8Vn4s8XWohUOU9hXFNCS/kzUKUVh7NM9R4hFsHlMypI8PJCuzkJXWw0 33nD721xRst/dZJzUlltlOraPPOjwS0zL1L6dF/SuTZfrZ5/h2XWxuXFI6roRPngc66zadhyQaUSh 3eT3ggoV6yy3m3Zi13WW+d2szmC8yWKWyBvIlJCBI=; From: Mark Cave-Ayland To: huth@tuxfamily.org, qemu-devel@nongnu.org Date: Thu, 12 Dec 2024 11:45:54 +0000 Message-Id: <20241212114620.549285-9-mark.cave-ayland@ilande.co.uk> X-Mailer: git-send-email 2.39.5 In-Reply-To: <20241212114620.549285-1-mark.cave-ayland@ilande.co.uk> References: <20241212114620.549285-1-mark.cave-ayland@ilande.co.uk> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-SA-Exim-Connect-IP: 2a02:8012:c93d:0:260e:bf57:a4e9:8142 X-SA-Exim-Mail-From: mark.cave-ayland@ilande.co.uk Subject: [PATCH v2 08/34] next-cube: move SCSI 4020/4021 logic from next-pc device to next-scsi device X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on mail.ilande.co.uk) Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2001:41c9:1:41f::167; envelope-from=mark.cave-ayland@ilande.co.uk; helo=mail.ilande.co.uk X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: fail (Header signature does not verify) X-ZM-MESSAGEID: 1734004109563116600 Content-Type: text/plain; charset="utf-8" The SCSI 4020/4021 logic refers to the offset of the SCSI CSRs within the N= eXTCube address space. Due to the previously overlapping memory regions, there were duplicate MMIO accessors in the next.scr memory region for these registers = but this has now been resolved. Move the remaining SCSI 4020/4021 logic from the next-pc device to the next= -scsi device, with the exception that the SCSI 4021 register now returns its prev= ious value like a normal register instead of a hardcoded 0x40 value. This also m= atches how the registers are implemented in the Previous emulator. Signed-off-by: Mark Cave-Ayland Reviewed-by: Thomas Huth --- hw/m68k/next-cube.c | 139 ++++++++++++++++++++------------------------ 1 file changed, 62 insertions(+), 77 deletions(-) diff --git a/hw/m68k/next-cube.c b/hw/m68k/next-cube.c index 928740b281..ea1006efb3 100644 --- a/hw/m68k/next-cube.c +++ b/hw/m68k/next-cube.c @@ -365,8 +365,6 @@ static const MemoryRegionOps next_mmio_ops =3D { =20 static uint64_t next_scr_readfn(void *opaque, hwaddr addr, unsigned size) { - NeXTPC *s =3D NEXT_PC(opaque); - NeXTSCSI *ns =3D NEXT_SCSI(&s->next_scsi); uint64_t val; =20 switch (addr) { @@ -375,16 +373,6 @@ static uint64_t next_scr_readfn(void *opaque, hwaddr a= ddr, unsigned size) val =3D 0x40 | 0x04 | 0x2 | 0x1; break; =20 - case 0x14020: - DPRINTF("SCSI 4020 STATUS READ %X\n", ns->scsi_csr_1); - val =3D ns->scsi_csr_1; - break; - - case 0x14021: - DPRINTF("SCSI 4021 STATUS READ %X\n", ns->scsi_csr_2); - val =3D 0x40; - break; - /* * These 4 registers are the hardware timer, not sure which register * is the latch instead of data, but no problems so far. @@ -413,9 +401,6 @@ static uint64_t next_scr_readfn(void *opaque, hwaddr ad= dr, unsigned size) static void next_scr_writefn(void *opaque, hwaddr addr, uint64_t val, unsigned size) { - NeXTPC *s =3D NEXT_PC(opaque); - NeXTSCSI *ns =3D NEXT_SCSI(&s->next_scsi); - switch (addr) { case 0x14108: DPRINTF("FDCSR Write: %"PRIx64 "\n", val); @@ -424,68 +409,6 @@ static void next_scr_writefn(void *opaque, hwaddr addr= , uint64_t val, } break; =20 - case 0x14020: /* SCSI Control Register */ - if (val & SCSICSR_FIFOFL) { - DPRINTF("SCSICSR FIFO Flush\n"); - /* will have to add another irq to the esp if this is needed */ - /* esp_puflush_fifo(esp_g); */ - } - - if (val & SCSICSR_ENABLE) { - DPRINTF("SCSICSR Enable\n"); - /* - * qemu_irq_raise(s->scsi_dma); - * s->scsi_csr_1 =3D 0xc0; - * s->scsi_csr_1 |=3D 0x1; - * qemu_irq_pulse(s->scsi_dma); - */ - } - /* - * else - * s->scsi_csr_1 &=3D ~SCSICSR_ENABLE; - */ - - if (val & SCSICSR_RESET) { - DPRINTF("SCSICSR Reset\n"); - /* I think this should set DMADIR. CPUDMA and INTMASK to 0 */ - qemu_irq_raise(s->scsi_reset); - ns->scsi_csr_1 &=3D ~(SCSICSR_INTMASK | 0x80 | 0x1); - qemu_irq_lower(s->scsi_reset); - } - if (val & SCSICSR_DMADIR) { - DPRINTF("SCSICSR DMAdir\n"); - } - if (val & SCSICSR_CPUDMA) { - DPRINTF("SCSICSR CPUDMA\n"); - /* qemu_irq_raise(s->scsi_dma); */ - s->int_status |=3D 0x4000000; - } else { - /* fprintf(stderr,"SCSICSR CPUDMA disabled\n"); */ - s->int_status &=3D ~(0x4000000); - /* qemu_irq_lower(s->scsi_dma); */ - } - if (val & SCSICSR_INTMASK) { - DPRINTF("SCSICSR INTMASK\n"); - /* - * int_mask &=3D ~0x1000; - * s->scsi_csr_1 |=3D val; - * s->scsi_csr_1 &=3D ~SCSICSR_INTMASK; - * if (s->scsi_queued) { - * s->scsi_queued =3D 0; - * next_irq(s, NEXT_SCSI_I, level); - * } - */ - } else { - /* int_mask |=3D 0x1000; */ - } - if (val & 0x80) { - /* int_mask |=3D 0x1000; */ - /* s->scsi_csr_1 |=3D 0x80; */ - } - DPRINTF("SCSICSR Write: %"PRIx64 "\n", val); - /* s->scsi_csr_1 =3D val; */ - break; - /* Hardware timer latch - not implemented yet */ case 0x1a000: default: @@ -846,13 +769,73 @@ static void next_scsi_csr_write(void *opaque, hwaddr = addr, uint64_t val, unsigned size) { NeXTSCSI *s =3D NEXT_SCSI(opaque); + NeXTPC *pc =3D NEXT_PC(container_of(s, NeXTPC, next_scsi)); =20 switch (addr) { case 0: + if (val & SCSICSR_FIFOFL) { + DPRINTF("SCSICSR FIFO Flush\n"); + /* will have to add another irq to the esp if this is needed */ + /* esp_puflush_fifo(esp_g); */ + } + + if (val & SCSICSR_ENABLE) { + DPRINTF("SCSICSR Enable\n"); + /* + * qemu_irq_raise(s->scsi_dma); + * s->scsi_csr_1 =3D 0xc0; + * s->scsi_csr_1 |=3D 0x1; + * qemu_irq_pulse(s->scsi_dma); + */ + } + /* + * else + * s->scsi_csr_1 &=3D ~SCSICSR_ENABLE; + */ + + if (val & SCSICSR_RESET) { + DPRINTF("SCSICSR Reset\n"); + /* I think this should set DMADIR. CPUDMA and INTMASK to 0 */ + qemu_irq_raise(pc->scsi_reset); + s->scsi_csr_1 &=3D ~(SCSICSR_INTMASK | 0x80 | 0x1); + qemu_irq_lower(pc->scsi_reset); + } + if (val & SCSICSR_DMADIR) { + DPRINTF("SCSICSR DMAdir\n"); + } + if (val & SCSICSR_CPUDMA) { + DPRINTF("SCSICSR CPUDMA\n"); + /* qemu_irq_raise(s->scsi_dma); */ + pc->int_status |=3D 0x4000000; + } else { + /* fprintf(stderr,"SCSICSR CPUDMA disabled\n"); */ + pc->int_status &=3D ~(0x4000000); + /* qemu_irq_lower(s->scsi_dma); */ + } + if (val & SCSICSR_INTMASK) { + DPRINTF("SCSICSR INTMASK\n"); + /* + * int_mask &=3D ~0x1000; + * s->scsi_csr_1 |=3D val; + * s->scsi_csr_1 &=3D ~SCSICSR_INTMASK; + * if (s->scsi_queued) { + * s->scsi_queued =3D 0; + * next_irq(s, NEXT_SCSI_I, level); + * } + */ + } else { + /* int_mask |=3D 0x1000; */ + } + if (val & 0x80) { + /* int_mask |=3D 0x1000; */ + /* s->scsi_csr_1 |=3D 0x80; */ + } + DPRINTF("SCSICSR1 Write: %"PRIx64 "\n", val); s->scsi_csr_1 =3D val; break; =20 case 1: + DPRINTF("SCSICSR2 Write: %"PRIx64 "\n", val); s->scsi_csr_2 =3D val; break; =20 @@ -868,10 +851,12 @@ static uint64_t next_scsi_csr_read(void *opaque, hwad= dr addr, unsigned size) =20 switch (addr) { case 0: + DPRINTF("SCSI 4020 STATUS READ %X\n", s->scsi_csr_1); val =3D s->scsi_csr_1; break; =20 case 1: + DPRINTF("SCSI 4021 STATUS READ %X\n", s->scsi_csr_2); val =3D s->scsi_csr_2; break; =20 --=20 2.39.5