From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-13.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id B75C9C433B4 for ; Fri, 21 May 2021 09:35:52 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 944986135A for ; Fri, 21 May 2021 09:35:52 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232876AbhEUJhO (ORCPT ); Fri, 21 May 2021 05:37:14 -0400 Received: from mx0b-001b2d01.pphosted.com ([148.163.158.5]:19704 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S232672AbhEUJhO (ORCPT ); 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Fri, 21 May 2021 09:35:39 +0000 (GMT) Received: from b03ledav001.gho.boulder.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id DE9C06E04C; Fri, 21 May 2021 09:35:37 +0000 (GMT) Received: from sig-9-65-94-165.ibm.com (unknown [9.65.94.165]) by b03ledav001.gho.boulder.ibm.com (Postfix) with ESMTP; Fri, 21 May 2021 09:35:37 +0000 (GMT) Message-ID: Subject: [PATCH v4 09/16] powerpc/pseries/vas: Add HCALL wrappers for VAS handling From: Haren Myneni To: linuxppc-dev@lists.ozlabs.org, linux-crypto@vger.kernel.org, mpe@ellerman.id.au, herbert@gondor.apana.org.au, npiggin@gmail.com Cc: hbabu@us.ibm.com, haren@us.ibm.com Date: Fri, 21 May 2021 02:35:35 -0700 In-Reply-To: <8d219c0816133a8643d650709066cf04c9c77322.camel@linux.ibm.com> References: <8d219c0816133a8643d650709066cf04c9c77322.camel@linux.ibm.com> Content-Type: text/plain; charset="UTF-8" User-Agent: Evolution 3.36.2 (3.36.2-1.fc32) MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-TM-AS-GCONF: 00 X-Proofpoint-ORIG-GUID: ZmQtnh4A0efs15r6soW8x9GIhMrMJfjy X-Proofpoint-GUID: wW7w0o1Tjn1nX9bCIoiMVoWpFL-R1vsx X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.391,18.0.761 definitions=2021-05-21_03:2021-05-20,2021-05-21 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 mlxscore=0 malwarescore=0 phishscore=0 mlxlogscore=999 spamscore=0 clxscore=1015 lowpriorityscore=0 adultscore=0 impostorscore=0 priorityscore=1501 bulkscore=0 suspectscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2104190000 definitions=main-2105210061 Precedence: bulk List-ID: X-Mailing-List: linux-crypto@vger.kernel.org This patch adds the following HCALL wrapper functions to allocate, modify and deallocate VAS windows, and retrieve VAS capabilities. H_ALLOCATE_VAS_WINDOW: Allocate VAS window H_DEALLOCATE_VAS_WINDOW: Close VAS window H_MODIFY_VAS_WINDOW: Setup window before using H_QUERY_VAS_CAPABILITIES: Get VAS capabilities Signed-off-by: Haren Myneni Reviewed-by: Nicholas Piggin --- arch/powerpc/platforms/pseries/vas.c | 217 +++++++++++++++++++++++++++ 1 file changed, 217 insertions(+) create mode 100644 arch/powerpc/platforms/pseries/vas.c diff --git a/arch/powerpc/platforms/pseries/vas.c b/arch/powerpc/platforms/pseries/vas.c new file mode 100644 index 000000000000..06960151477c --- /dev/null +++ b/arch/powerpc/platforms/pseries/vas.c @@ -0,0 +1,217 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Copyright 2020-21 IBM Corp. + */ + +#define pr_fmt(fmt) "vas: " fmt + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include "vas.h" + +#define VAS_INVALID_WIN_ADDRESS 0xFFFFFFFFFFFFFFFFul +#define VAS_DEFAULT_DOMAIN_ID 0xFFFFFFFFFFFFFFFFul +/* Authority Mask Register (AMR) value is not supported in */ +/* linux implementation. So pass '0' to modify window HCALL */ +#define VAS_AMR_VALUE 0 +/* phyp allows one credit per window right now */ +#define DEF_WIN_CREDS 1 + +static int64_t hcall_return_busy_check(int64_t rc) +{ + /* Check if we are stalled for some time */ + if (H_IS_LONG_BUSY(rc)) { + msleep(get_longbusy_msecs(rc)); + rc = H_BUSY; + } else if (rc == H_BUSY) { + cond_resched(); + } + + return rc; +} + +/* + * Allocate VAS window HCALL + */ +static int plpar_vas_allocate_window(struct vas_window *win, u64 *domain, + u8 wintype, u16 credits) +{ + long retbuf[PLPAR_HCALL9_BUFSIZE] = {0}; + int64_t rc; + + do { + rc = plpar_hcall9(H_ALLOCATE_VAS_WINDOW, retbuf, wintype, + credits, domain[0], domain[1], domain[2], + domain[3], domain[4], domain[5]); + + rc = hcall_return_busy_check(rc); + } while (rc == H_BUSY); + + switch (rc) { + case H_SUCCESS: + win->winid = retbuf[0]; + win->lpar.win_addr = retbuf[1]; + win->lpar.complete_irq = retbuf[2]; + win->lpar.fault_irq = retbuf[3]; + if (win->lpar.win_addr == VAS_INVALID_WIN_ADDRESS) { + pr_err("HCALL(%x): COPY/PASTE is not supported\n", + H_ALLOCATE_VAS_WINDOW); + return -ENOTSUPP; + } + return 0; + case H_PARAMETER: + pr_err("HCALL(%x): Invalid window type (%u)\n", + H_ALLOCATE_VAS_WINDOW, wintype); + return -EINVAL; + case H_P2: + pr_err("HCALL(%x): Credits(%u) exceed maximum window credits\n", + H_ALLOCATE_VAS_WINDOW, credits); + return -EINVAL; + case H_COP_HW: + pr_err("HCALL(%x): User-mode COPY/PASTE is not supported\n", + H_ALLOCATE_VAS_WINDOW); + return -ENOTSUPP; + case H_RESOURCE: + pr_err("HCALL(%x): LPAR credit limit exceeds window limit\n", + H_ALLOCATE_VAS_WINDOW); + return -EPERM; + case H_CONSTRAINED: + pr_err("HCALL(%x): Credits (%u) are not available\n", + H_ALLOCATE_VAS_WINDOW, credits); + return -EPERM; + default: + pr_err("HCALL(%x): Unexpected error %lld\n", + H_ALLOCATE_VAS_WINDOW, rc); + return -EIO; + } +} + +/* + * Deallocate VAS window HCALL. + */ +static int plpar_vas_deallocate_window(u64 winid) +{ + int64_t rc; + + do { + rc = plpar_hcall_norets(H_DEALLOCATE_VAS_WINDOW, winid); + + rc = hcall_return_busy_check(rc); + } while (rc == H_BUSY); + + switch (rc) { + case H_SUCCESS: + return 0; + case H_PARAMETER: + pr_err("HCALL(%x): Invalid window ID %llu\n", + H_DEALLOCATE_VAS_WINDOW, winid); + return -EINVAL; + case H_STATE: + pr_err("HCALL(%x): Window(%llu): Invalid page table entries\n", + H_DEALLOCATE_VAS_WINDOW, winid); + return -EPERM; + default: + pr_err("HCALL(%x): Unexpected error %lld for window(%llu)\n", + H_DEALLOCATE_VAS_WINDOW, rc, winid); + return -EIO; + } +} + +/* + * Modify VAS window. + * After the window is opened with allocate window HCALL, configure it + * with flags and LPAR PID before using. + */ +static int plpar_vas_modify_window(struct vas_window *win) +{ + int64_t rc; + u32 lpid = mfspr(SPRN_PID); + + /* + * AMR value is not supported in Linux implementation + * phyp ignores it if 0 is passed. + */ + do { + rc = plpar_hcall_norets(H_MODIFY_VAS_WINDOW, win->winid, + lpid, 0, VAS_MOD_WIN_FLAGS, + VAS_AMR_VALUE); + + rc = hcall_return_busy_check(rc); + } while (rc == H_BUSY); + + switch (rc) { + case H_SUCCESS: + return 0; + case H_PARAMETER: + pr_err("HCALL(%x): Invalid window ID %u\n", + H_MODIFY_VAS_WINDOW, win->winid); + return -EINVAL; + case H_P2: + pr_err("HCALL(%x): Window(%d): Invalid LPAR Process ID %u\n", + H_MODIFY_VAS_WINDOW, lpid, win->winid); + return -EINVAL; + case H_P3: + /* LPAR thread ID is deprecated on P10 */ + pr_err("HCALL(%x): Invalid LPAR Thread ID for window(%u)\n", + H_MODIFY_VAS_WINDOW, win->winid); + return -EINVAL; + case H_STATE: + pr_err("HCALL(%x): Jobs in progress, Can't modify window(%u)\n", + H_MODIFY_VAS_WINDOW, win->winid); + return -EBUSY; + default: + pr_err("HCALL(%x): Unexpected error %lld for window(%u)\n", + H_MODIFY_VAS_WINDOW, rc, win->winid); + return -EIO; + } +} + +/* + * This HCALL is used to determine the capabilities that pHyp provides. + * @hcall: H_QUERY_VAS_CAPABILITIES or H_QUERY_NX_CAPABILITIES + * @query_type: If 0 is passed, phyp returns the overall capabilities + * which provides all feature(s) that are available. Then + * query phyp to get the corresponding capabilities for + * the specific feature. + * Example: H_QUERY_VAS_CAPABILITIES provides VAS GZIP QoS + * and VAS GZIP Default capabilities. + * H_QUERY_NX_CAPABILITIES provides NX GZIP + * capabilities. + * @result: Return buffer to save capabilities. + */ +int plpar_vas_query_capabilities(const u64 hcall, u8 query_type, + u64 result) +{ + int64_t rc; + + rc = plpar_hcall_norets(hcall, query_type, result); + + switch (rc) { + case H_SUCCESS: + return 0; + case H_PARAMETER: + pr_err("HCALL(%llx): Invalid query type %u\n", hcall, + query_type); + return -EINVAL; + case H_PRIVILEGE: + pr_err("HCALL(%llx): Invalid result buffer 0x%llx\n", + hcall, result); + return -EACCES; + default: + pr_err("HCALL(%llx): Unexpected error %lld\n", hcall, rc); + return -EIO; + } +} -- 2.18.2 From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-13.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 31D84C433ED for ; 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Fri, 21 May 2021 09:35:37 +0000 (GMT) Received: from sig-9-65-94-165.ibm.com (unknown [9.65.94.165]) by b03ledav001.gho.boulder.ibm.com (Postfix) with ESMTP; Fri, 21 May 2021 09:35:37 +0000 (GMT) Message-ID: Subject: [PATCH v4 09/16] powerpc/pseries/vas: Add HCALL wrappers for VAS handling From: Haren Myneni To: linuxppc-dev@lists.ozlabs.org, linux-crypto@vger.kernel.org, mpe@ellerman.id.au, herbert@gondor.apana.org.au, npiggin@gmail.com Date: Fri, 21 May 2021 02:35:35 -0700 In-Reply-To: <8d219c0816133a8643d650709066cf04c9c77322.camel@linux.ibm.com> References: <8d219c0816133a8643d650709066cf04c9c77322.camel@linux.ibm.com> Content-Type: text/plain; charset="UTF-8" User-Agent: Evolution 3.36.2 (3.36.2-1.fc32) MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-TM-AS-GCONF: 00 X-Proofpoint-ORIG-GUID: ZmQtnh4A0efs15r6soW8x9GIhMrMJfjy X-Proofpoint-GUID: wW7w0o1Tjn1nX9bCIoiMVoWpFL-R1vsx X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.391, 18.0.761 definitions=2021-05-21_03:2021-05-20, 2021-05-21 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 mlxscore=0 malwarescore=0 phishscore=0 mlxlogscore=999 spamscore=0 clxscore=1015 lowpriorityscore=0 adultscore=0 impostorscore=0 priorityscore=1501 bulkscore=0 suspectscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2104190000 definitions=main-2105210061 X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" This patch adds the following HCALL wrapper functions to allocate, modify and deallocate VAS windows, and retrieve VAS capabilities. H_ALLOCATE_VAS_WINDOW: Allocate VAS window H_DEALLOCATE_VAS_WINDOW: Close VAS window H_MODIFY_VAS_WINDOW: Setup window before using H_QUERY_VAS_CAPABILITIES: Get VAS capabilities Signed-off-by: Haren Myneni Reviewed-by: Nicholas Piggin --- arch/powerpc/platforms/pseries/vas.c | 217 +++++++++++++++++++++++++++ 1 file changed, 217 insertions(+) create mode 100644 arch/powerpc/platforms/pseries/vas.c diff --git a/arch/powerpc/platforms/pseries/vas.c b/arch/powerpc/platforms/pseries/vas.c new file mode 100644 index 000000000000..06960151477c --- /dev/null +++ b/arch/powerpc/platforms/pseries/vas.c @@ -0,0 +1,217 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Copyright 2020-21 IBM Corp. + */ + +#define pr_fmt(fmt) "vas: " fmt + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include "vas.h" + +#define VAS_INVALID_WIN_ADDRESS 0xFFFFFFFFFFFFFFFFul +#define VAS_DEFAULT_DOMAIN_ID 0xFFFFFFFFFFFFFFFFul +/* Authority Mask Register (AMR) value is not supported in */ +/* linux implementation. So pass '0' to modify window HCALL */ +#define VAS_AMR_VALUE 0 +/* phyp allows one credit per window right now */ +#define DEF_WIN_CREDS 1 + +static int64_t hcall_return_busy_check(int64_t rc) +{ + /* Check if we are stalled for some time */ + if (H_IS_LONG_BUSY(rc)) { + msleep(get_longbusy_msecs(rc)); + rc = H_BUSY; + } else if (rc == H_BUSY) { + cond_resched(); + } + + return rc; +} + +/* + * Allocate VAS window HCALL + */ +static int plpar_vas_allocate_window(struct vas_window *win, u64 *domain, + u8 wintype, u16 credits) +{ + long retbuf[PLPAR_HCALL9_BUFSIZE] = {0}; + int64_t rc; + + do { + rc = plpar_hcall9(H_ALLOCATE_VAS_WINDOW, retbuf, wintype, + credits, domain[0], domain[1], domain[2], + domain[3], domain[4], domain[5]); + + rc = hcall_return_busy_check(rc); + } while (rc == H_BUSY); + + switch (rc) { + case H_SUCCESS: + win->winid = retbuf[0]; + win->lpar.win_addr = retbuf[1]; + win->lpar.complete_irq = retbuf[2]; + win->lpar.fault_irq = retbuf[3]; + if (win->lpar.win_addr == VAS_INVALID_WIN_ADDRESS) { + pr_err("HCALL(%x): COPY/PASTE is not supported\n", + H_ALLOCATE_VAS_WINDOW); + return -ENOTSUPP; + } + return 0; + case H_PARAMETER: + pr_err("HCALL(%x): Invalid window type (%u)\n", + H_ALLOCATE_VAS_WINDOW, wintype); + return -EINVAL; + case H_P2: + pr_err("HCALL(%x): Credits(%u) exceed maximum window credits\n", + H_ALLOCATE_VAS_WINDOW, credits); + return -EINVAL; + case H_COP_HW: + pr_err("HCALL(%x): User-mode COPY/PASTE is not supported\n", + H_ALLOCATE_VAS_WINDOW); + return -ENOTSUPP; + case H_RESOURCE: + pr_err("HCALL(%x): LPAR credit limit exceeds window limit\n", + H_ALLOCATE_VAS_WINDOW); + return -EPERM; + case H_CONSTRAINED: + pr_err("HCALL(%x): Credits (%u) are not available\n", + H_ALLOCATE_VAS_WINDOW, credits); + return -EPERM; + default: + pr_err("HCALL(%x): Unexpected error %lld\n", + H_ALLOCATE_VAS_WINDOW, rc); + return -EIO; + } +} + +/* + * Deallocate VAS window HCALL. + */ +static int plpar_vas_deallocate_window(u64 winid) +{ + int64_t rc; + + do { + rc = plpar_hcall_norets(H_DEALLOCATE_VAS_WINDOW, winid); + + rc = hcall_return_busy_check(rc); + } while (rc == H_BUSY); + + switch (rc) { + case H_SUCCESS: + return 0; + case H_PARAMETER: + pr_err("HCALL(%x): Invalid window ID %llu\n", + H_DEALLOCATE_VAS_WINDOW, winid); + return -EINVAL; + case H_STATE: + pr_err("HCALL(%x): Window(%llu): Invalid page table entries\n", + H_DEALLOCATE_VAS_WINDOW, winid); + return -EPERM; + default: + pr_err("HCALL(%x): Unexpected error %lld for window(%llu)\n", + H_DEALLOCATE_VAS_WINDOW, rc, winid); + return -EIO; + } +} + +/* + * Modify VAS window. + * After the window is opened with allocate window HCALL, configure it + * with flags and LPAR PID before using. + */ +static int plpar_vas_modify_window(struct vas_window *win) +{ + int64_t rc; + u32 lpid = mfspr(SPRN_PID); + + /* + * AMR value is not supported in Linux implementation + * phyp ignores it if 0 is passed. + */ + do { + rc = plpar_hcall_norets(H_MODIFY_VAS_WINDOW, win->winid, + lpid, 0, VAS_MOD_WIN_FLAGS, + VAS_AMR_VALUE); + + rc = hcall_return_busy_check(rc); + } while (rc == H_BUSY); + + switch (rc) { + case H_SUCCESS: + return 0; + case H_PARAMETER: + pr_err("HCALL(%x): Invalid window ID %u\n", + H_MODIFY_VAS_WINDOW, win->winid); + return -EINVAL; + case H_P2: + pr_err("HCALL(%x): Window(%d): Invalid LPAR Process ID %u\n", + H_MODIFY_VAS_WINDOW, lpid, win->winid); + return -EINVAL; + case H_P3: + /* LPAR thread ID is deprecated on P10 */ + pr_err("HCALL(%x): Invalid LPAR Thread ID for window(%u)\n", + H_MODIFY_VAS_WINDOW, win->winid); + return -EINVAL; + case H_STATE: + pr_err("HCALL(%x): Jobs in progress, Can't modify window(%u)\n", + H_MODIFY_VAS_WINDOW, win->winid); + return -EBUSY; + default: + pr_err("HCALL(%x): Unexpected error %lld for window(%u)\n", + H_MODIFY_VAS_WINDOW, rc, win->winid); + return -EIO; + } +} + +/* + * This HCALL is used to determine the capabilities that pHyp provides. + * @hcall: H_QUERY_VAS_CAPABILITIES or H_QUERY_NX_CAPABILITIES + * @query_type: If 0 is passed, phyp returns the overall capabilities + * which provides all feature(s) that are available. Then + * query phyp to get the corresponding capabilities for + * the specific feature. + * Example: H_QUERY_VAS_CAPABILITIES provides VAS GZIP QoS + * and VAS GZIP Default capabilities. + * H_QUERY_NX_CAPABILITIES provides NX GZIP + * capabilities. + * @result: Return buffer to save capabilities. + */ +int plpar_vas_query_capabilities(const u64 hcall, u8 query_type, + u64 result) +{ + int64_t rc; + + rc = plpar_hcall_norets(hcall, query_type, result); + + switch (rc) { + case H_SUCCESS: + return 0; + case H_PARAMETER: + pr_err("HCALL(%llx): Invalid query type %u\n", hcall, + query_type); + return -EINVAL; + case H_PRIVILEGE: + pr_err("HCALL(%llx): Invalid result buffer 0x%llx\n", + hcall, result); + return -EACCES; + default: + pr_err("HCALL(%llx): Unexpected error %lld\n", hcall, rc); + return -EIO; + } +} -- 2.18.2