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[212.145.95.189]) by smtp.gmail.com with ESMTPSA id f12sm16331659wmg.16.2021.07.11.03.36.28 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 11 Jul 2021 03:36:29 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=sender:from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=D2ifaiSyT2ObTU4DYndDlaBCTGyO6T4d5PvvzrO+4sI=; b=XpnpyUpRcOiPcGZJzRMH8PqJLNjPKCz9GlBVVuwKlQmI/zG6F9SdvCkHE/5IrBqOH2 BAmFNaWLEK5JlSiKBPrtS6ix2RKf0X0eP27J6GpWJxMNJWm8UeLl1kVHqGcpOCOt6fqx fwdHChHcZFPlcXkIbP9GABt8CNDIbGz5OhkXFL1H8Lmvxp4zoyj6Fn5ZkroIbSLWHaX0 bcYwqt7Tyvsot9MTxRTQfS1t6x5znQSgIEhO84x8mCkGKIzvOBsZXpjYFV+LMFFoYfs8 ZB7986MwbCw/zAdgUoFrePHGw4wRDPsgOkwPA3CJS62T5UX/+4hiLA8mpAOowwpMUbEu ZdgQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:sender:from:to:cc:subject:date:message-id :in-reply-to:references:mime-version:content-transfer-encoding; bh=D2ifaiSyT2ObTU4DYndDlaBCTGyO6T4d5PvvzrO+4sI=; b=k+x+/VYnSiXJwWoYSarItA3W8Eu9wGF/f5LBuesdl4O3N6di3qtGZ4CjcGdQzZ4Trp ijHtMN8uPfsAJ/qsUfvnDfnMHZZ2kJ4EfRdmJXKZ7HjYeUQ6SDJx1yLymus8+/gkztGF ES0/XVvggrlmC1j4vqLmGGCn1x6CgWsb399j3jM8pD90XXBPMJfAF16P02pzWf4IkWgK dhAqLXWaSs+VCL5orLe7Tm+w19hCchsnf7hx9DA9dxd3b4w31ue5pWPdkRUeDDgIPqer 5wJ5OFutGnRcm5nCTt1q+TuOoUfwfVrC+3hiaaliAItjoGKrle5F3ZxsBT29tXgmdyCu rckA== X-Gm-Message-State: AOAM531GE69N3W5jbqxh3f7Ll4mBj720QRLARz/NYQ88X7FVOxPNziV3 l/7w/EC6A34n1aBsboHI6Vk= X-Google-Smtp-Source: ABdhPJxlcgEMuLlJVjlv+WBYQOdthRqRlVtvHxsZFFJFSQhl/2Nx+hpeeVlH0trA8zU49J+eS2u0gQ== X-Received: by 2002:adf:e0c8:: with SMTP id m8mr52763077wri.261.1625999790130; Sun, 11 Jul 2021 03:36:30 -0700 (PDT) Sender: =?UTF-8?Q?Philippe_Mathieu=2DDaud=C3=A9?= From: =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= To: qemu-devel@nongnu.org Cc: Mark Cave-Ayland , =?UTF-8?q?Herv=C3=A9=20Poussineau?= , Jason Wang , Laurent Vivier , Finn Thain , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= Subject: [PATCH v4 3/5] dp8393x: Store CAM registers as 16-bit Date: Sun, 11 Jul 2021 12:36:10 +0200 Message-Id: <20210711103612.2661521-4-f4bug@amsat.org> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210711103612.2661521-1-f4bug@amsat.org> References: <20210711103612.2661521-1-f4bug@amsat.org> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-ZohoMail-DKIM: pass (identity @gmail.com) X-ZM-MESSAGEID: 1625999792322100001 Per the DP83932C datasheet from July 1995: 4.0 SONIC Registers 4.1 THE CAM UNIT The Content Addressable Memory (CAM) consists of sixteen 48-bit entries for complete address filtering of network packets. Each entry corresponds to a 48-bit destination address that is user programmable and can contain any combination of Multicast or Physical addresses. Each entry is partitioned into three 16-bit CAM cells accessible through CAM Address Ports (CAP 2, CAP 1 and CAP 0) with CAP0 corresponding to the least significant 16 bits of the Destination Address and CAP2 corresponding to the most significant bits. Store the CAM registers as 16-bit as it simplifies the code. Having now the CAM registers as arrays of 3 uint16_t, we can avoid using the VMSTATE_BUFFER_UNSAFE macro by using VMSTATE_UINT16_2DARRAY which is more appropriate. This breaks the migration stream however. Co-developed-by: Philippe Mathieu-Daud=C3=A9 Co-developed-by: Mark Cave-Ayland Signed-off-by: Philippe Mathieu-Daud=C3=A9 Reviewed-by: Mark Cave-Ayland Tested-by: Finn Thain Message-Id: <20210710174954.2577195-5-f4bug@amsat.org> --- Missing: Signed-off-by: Mark Cave-Ayland --- hw/net/dp8393x.c | 27 ++++++++++++--------------- 1 file changed, 12 insertions(+), 15 deletions(-) diff --git a/hw/net/dp8393x.c b/hw/net/dp8393x.c index d1e147a82a6..283de9db0bf 100644 --- a/hw/net/dp8393x.c +++ b/hw/net/dp8393x.c @@ -158,7 +158,7 @@ struct dp8393xState { MemoryRegion mmio; =20 /* Registers */ - uint8_t cam[16][6]; + uint16_t cam[16][3]; uint16_t regs[SONIC_REG_COUNT]; =20 /* Temporaries */ @@ -281,15 +281,13 @@ static void dp8393x_do_load_cam(dp8393xState *s) address_space_read(&s->as, dp8393x_cdp(s), MEMTXATTRS_UNSPECIFIED, s->data, size); index =3D dp8393x_get(s, width, 0) & 0xf; - s->cam[index][0] =3D dp8393x_get(s, width, 1) & 0xff; - s->cam[index][1] =3D dp8393x_get(s, width, 1) >> 8; - s->cam[index][2] =3D dp8393x_get(s, width, 2) & 0xff; - s->cam[index][3] =3D dp8393x_get(s, width, 2) >> 8; - s->cam[index][4] =3D dp8393x_get(s, width, 3) & 0xff; - s->cam[index][5] =3D dp8393x_get(s, width, 3) >> 8; - trace_dp8393x_load_cam(index, s->cam[index][0], s->cam[index][1], - s->cam[index][2], s->cam[index][3], - s->cam[index][4], s->cam[index][5]); + s->cam[index][0] =3D dp8393x_get(s, width, 1); + s->cam[index][1] =3D dp8393x_get(s, width, 2); + s->cam[index][2] =3D dp8393x_get(s, width, 3); + trace_dp8393x_load_cam(index, + s->cam[index][0] >> 8, s->cam[index][0] & 0= xff, + s->cam[index][1] >> 8, s->cam[index][1] & 0= xff, + s->cam[index][2] >> 8, s->cam[index][2] & 0= xff); /* Move to next entry */ s->regs[SONIC_CDC]--; s->regs[SONIC_CDP] +=3D size; @@ -592,8 +590,7 @@ static uint64_t dp8393x_read(void *opaque, hwaddr addr,= unsigned int size) case SONIC_CAP1: case SONIC_CAP0: if (s->regs[SONIC_CR] & SONIC_CR_RST) { - val =3D s->cam[s->regs[SONIC_CEP] & 0xf][2 * (SONIC_CAP0 - reg= ) + 1] << 8; - val |=3D s->cam[s->regs[SONIC_CEP] & 0xf][2 * (SONIC_CAP0 - re= g)]; + val =3D s->cam[s->regs[SONIC_CEP] & 0xf][SONIC_CAP0 - reg]; } break; /* All other registers have no special contraints */ @@ -984,10 +981,10 @@ static void dp8393x_realize(DeviceState *dev, Error *= *errp) =20 static const VMStateDescription vmstate_dp8393x =3D { .name =3D "dp8393x", - .version_id =3D 0, - .minimum_version_id =3D 0, + .version_id =3D 1, + .minimum_version_id =3D 1, .fields =3D (VMStateField []) { - VMSTATE_BUFFER_UNSAFE(cam, dp8393xState, 0, 16 * 6), + VMSTATE_UINT16_2DARRAY(cam, dp8393xState, 16, 3), VMSTATE_UINT16_ARRAY(regs, dp8393xState, SONIC_REG_COUNT), VMSTATE_END_OF_LIST() } --=20 2.31.1