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Miller" , "linux-kernel@vger.kernel.org" , "linux-crypto@vger.kernel.org" CC: "Thomas, Rijo-john" , "Singh, Brijesh" , "Easow, Nimesh" , "Rangasamy, Devaraj" Subject: [RFC PATCH 3/5] crypto: ccp - move SEV vdata to a dedicated data structure Thread-Topic: [RFC PATCH 3/5] crypto: ccp - move SEV vdata to a dedicated data structure Thread-Index: AQHViZTe9o0ygMrtCUGzxWo3PjBc2A== Date: Wed, 23 Oct 2019 11:27:35 +0000 Message-ID: <66263a80e37bb54804208864fdce9187e8b6dcdf.1571817675.git.Rijo-john.Thomas@amd.com> References: In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-clientproxiedby: MA1PR0101CA0037.INDPRD01.PROD.OUTLOOK.COM (2603:1096:a00:22::23) To CY4PR12MB1925.namprd12.prod.outlook.com (2603:10b6:903:120::7) authentication-results: spf=none (sender IP is ) smtp.mailfrom=Rijo-john.Thomas@amd.com; x-ms-exchange-messagesentrepresentingtype: 1 x-mailer: git-send-email 1.9.1 x-originating-ip: [165.204.156.251] x-ms-publictraffictype: Email x-ms-office365-filtering-ht: Tenant x-ms-office365-filtering-correlation-id: 0316e6e3-a209-4121-c0a6-08d757ac006a x-ms-traffictypediagnostic: CY4PR12MB1527: x-ms-exchange-transport-forked: True x-microsoft-antispam-prvs: x-ms-oob-tlc-oobclassifiers: OLM:2582; x-forefront-prvs: 019919A9E4 x-forefront-antispam-report: SFV:NSPM;SFS:(10009020)(4636009)(346002)(366004)(376002)(396003)(136003)(39860400002)(189003)(199004)(2616005)(476003)(81156014)(386003)(6486002)(6506007)(14454004)(446003)(11346002)(26005)(81166006)(305945005)(86362001)(5660300002)(186003)(102836004)(7736002)(50226002)(66946007)(6436002)(478600001)(316002)(6116002)(3846002)(99286004)(6512007)(71190400001)(25786009)(118296001)(71200400001)(8676002)(110136005)(54906003)(2906002)(8936002)(486006)(256004)(14444005)(66476007)(66556008)(64756008)(66066001)(2201001)(52116002)(76176011)(66446008)(36756003)(2501003)(4326008);DIR:OUT;SFP:1101;SCL:1;SRVR:CY4PR12MB1527;H:CY4PR12MB1925.namprd12.prod.outlook.com;FPR:;SPF:None;LANG:en;PTR:InfoNoRecords;MX:1;A:1; received-spf: None (protection.outlook.com: amd.com does not designate permitted sender hosts) x-ms-exchange-senderadcheck: 1 x-microsoft-antispam: BCL:0; x-microsoft-antispam-message-info: iXRzw2qnz1XAzHwUqE5FKNKt+meUoJt0U2xmtk208shntjTumA5t7B2x8lGtM6B/Gjo2UEuItofdUgcHuKgFFFR248y0HG+JjMpigRd26SsrJt0QOZtwyVB6s1Hqj/Isiyh2UR7UKqpQstQofgOnxD8mMnfxI4sMQoiloKB6PAboLXMlZZ9np5LCPMPL08yr7NXyfXErpY+vK31f2nZcZwLHamP8EEvZbXzOKSxACzYSyIpSztdZWxkFmCH/M9l8jG1tal5MrJMy06aYoOVMGBqEo80ER7NuUEJYSp5bXN42d5d9isvypo4Z9l31jVID/4KLehZVfM4t79ILNZRu/EQqyVybRsbCVbu7AlwXrZs400x0u8A5aK+t6HjVyfP1ed5sLjLo+ps1Y5gBErw2b/BGtQNLSU08ft7EULRs1MWVKC7CVSPROrVT92usfs/b Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-Network-Message-Id: 0316e6e3-a209-4121-c0a6-08d757ac006a X-MS-Exchange-CrossTenant-originalarrivaltime: 23 Oct 2019 11:27:35.2860 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: TzMORZfIJo6OknO1tNoFZ/FFDGiRGgkXO216OCXeZw7BxxEoyLNuXx5wKq2FxGUkwBZMI373xtkfVk8Ld2SmZQ== X-MS-Exchange-Transport-CrossTenantHeadersStamped: CY4PR12MB1527 Sender: linux-crypto-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-crypto@vger.kernel.org PSP can support both SEV and TEE interface. Therefore, move SEV specific registers to a dedicated data structure. TEE interface specific registers will be added in a later patch. Signed-off-by: Rijo Thomas Signed-off-by: Devaraj Rangasamy --- drivers/crypto/ccp/sev-dev.c | 17 ++++++++++++----- drivers/crypto/ccp/sev-dev.h | 2 ++ drivers/crypto/ccp/sp-dev.h | 6 +++++- drivers/crypto/ccp/sp-pci.c | 16 ++++++++++++---- 4 files changed, 31 insertions(+), 10 deletions(-) diff --git a/drivers/crypto/ccp/sev-dev.c b/drivers/crypto/ccp/sev-dev.c index 7e5e7b2..f546f8d 100644 --- a/drivers/crypto/ccp/sev-dev.c +++ b/drivers/crypto/ccp/sev-dev.c @@ -65,7 +65,7 @@ static void sev_irq_handler(int irq, void *data, unsigned= int status) return; /* Check if it is SEV command completion: */ - reg =3D ioread32(sev->io_regs + sev->psp->vdata->cmdresp_reg); + reg =3D ioread32(sev->io_regs + sev->vdata->cmdresp_reg); if (reg & PSP_CMDRESP_RESP) { sev->int_rcvd =3D 1; wake_up(&sev->int_queue); @@ -82,7 +82,7 @@ static int sev_wait_cmd_ioc(struct sev_device *sev, if (!ret) return -ETIMEDOUT; - *reg =3D ioread32(sev->io_regs + sev->psp->vdata->cmdresp_reg); + *reg =3D ioread32(sev->io_regs + sev->vdata->cmdresp_reg); return 0; } @@ -148,15 +148,15 @@ static int __sev_do_cmd_locked(int cmd, void *data, i= nt *psp_ret) print_hex_dump_debug("(in): ", DUMP_PREFIX_OFFSET, 16, 2, data, sev_cmd_buffer_len(cmd), false); - iowrite32(phys_lsb, sev->io_regs + psp->vdata->cmdbuff_addr_lo_reg); - iowrite32(phys_msb, sev->io_regs + psp->vdata->cmdbuff_addr_hi_reg); + iowrite32(phys_lsb, sev->io_regs + sev->vdata->cmdbuff_addr_lo_reg); + iowrite32(phys_msb, sev->io_regs + sev->vdata->cmdbuff_addr_hi_reg); sev->int_rcvd =3D 0; reg =3D cmd; reg <<=3D SEV_CMDRESP_CMD_SHIFT; reg |=3D SEV_CMDRESP_IOC; - iowrite32(reg, sev->io_regs + psp->vdata->cmdresp_reg); + iowrite32(reg, sev->io_regs + sev->vdata->cmdresp_reg); /* wait for command completion */ ret =3D sev_wait_cmd_ioc(sev, ®, psp_timeout); @@ -934,6 +934,13 @@ int sev_dev_init(struct psp_device *psp) sev->io_regs =3D psp->io_regs; + sev->vdata =3D (struct sev_vdata *)psp->vdata->sev; + if (!sev->vdata) { + ret =3D -ENODEV; + dev_err(dev, "sev: missing driver data\n"); + goto e_err; + } + psp_set_sev_irq_handler(psp, sev_irq_handler, sev); ret =3D sev_misc_init(sev); diff --git a/drivers/crypto/ccp/sev-dev.h b/drivers/crypto/ccp/sev-dev.h index 20d51c9..55cae86 100644 --- a/drivers/crypto/ccp/sev-dev.h +++ b/drivers/crypto/ccp/sev-dev.h @@ -39,6 +39,8 @@ struct sev_device { void __iomem *io_regs; + struct sev_vdata *vdata; + int state; unsigned int int_rcvd; wait_queue_head_t int_queue; diff --git a/drivers/crypto/ccp/sp-dev.h b/drivers/crypto/ccp/sp-dev.h index 53c1256..0394c75 100644 --- a/drivers/crypto/ccp/sp-dev.h +++ b/drivers/crypto/ccp/sp-dev.h @@ -39,10 +39,14 @@ struct ccp_vdata { const unsigned int rsamax; }; -struct psp_vdata { +struct sev_vdata { const unsigned int cmdresp_reg; const unsigned int cmdbuff_addr_lo_reg; const unsigned int cmdbuff_addr_hi_reg; +}; + +struct psp_vdata { + const struct sev_vdata *sev; const unsigned int feature_reg; const unsigned int inten_reg; const unsigned int intsts_reg; diff --git a/drivers/crypto/ccp/sp-pci.c b/drivers/crypto/ccp/sp-pci.c index b29d2e6..733693d 100644 --- a/drivers/crypto/ccp/sp-pci.c +++ b/drivers/crypto/ccp/sp-pci.c @@ -262,19 +262,27 @@ static int sp_pci_resume(struct pci_dev *pdev) #endif #ifdef CONFIG_CRYPTO_DEV_SP_PSP -static const struct psp_vdata pspv1 =3D { +static const struct sev_vdata sevv1 =3D { .cmdresp_reg =3D 0x10580, .cmdbuff_addr_lo_reg =3D 0x105e0, .cmdbuff_addr_hi_reg =3D 0x105e4, +}; + +static const struct sev_vdata sevv2 =3D { + .cmdresp_reg =3D 0x10980, + .cmdbuff_addr_lo_reg =3D 0x109e0, + .cmdbuff_addr_hi_reg =3D 0x109e4, +}; + +static const struct psp_vdata pspv1 =3D { + .sev =3D &sevv1, .feature_reg =3D 0x105fc, .inten_reg =3D 0x10610, .intsts_reg =3D 0x10614, }; static const struct psp_vdata pspv2 =3D { - .cmdresp_reg =3D 0x10980, - .cmdbuff_addr_lo_reg =3D 0x109e0, - .cmdbuff_addr_hi_reg =3D 0x109e4, + .sev =3D &sevv2, .feature_reg =3D 0x109fc, .inten_reg =3D 0x10690, .intsts_reg =3D 0x10694, -- 1.9.1