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c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1748246748; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=1QQWubjuO94P3fUnntonpJ+ZNUJGgKRETQUw3K8QkCw=; b=fS//g0L1QI2MEV+wgO7bwW/4cVQ09PdW+Luz7n+eLZnXeVuZdT+cRoZkQID6EhMxlqgfrd tqUsdlNGUFCudennLleXItzgbAhev8cFWi7lBAhpK7zEQUkKmZ9FHAeZ/7t9g9K8owYn5k VCbcAk563Lcp7Hs1W17CcHhckRU7n/A= X-MC-Unique: cfyQjm3cMjCAtY8VkobRfQ-1 X-Mimecast-MFC-AGG-ID: cfyQjm3cMjCAtY8VkobRfQ_1748246742 From: =?UTF-8?q?C=C3=A9dric=20Le=20Goater?= To: qemu-arm@nongnu.org, qemu-devel@nongnu.org Cc: Jamin Lin , =?UTF-8?q?C=C3=A9dric=20Le=20Goater?= Subject: [PULL 07/39] hw/misc/aspeed_hace: Extract SG-mode hash buffer setup into helper function Date: Mon, 26 May 2025 10:04:40 +0200 Message-ID: <20250526080512.1697528-8-clg@redhat.com> In-Reply-To: <20250526080512.1697528-1-clg@redhat.com> References: <20250526080512.1697528-1-clg@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 3.4.1 on 10.30.177.111 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=170.10.133.124; envelope-from=clg@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -59 X-Spam_score: -6.0 X-Spam_bar: ------ X-Spam_report: (-6.0 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-2.904, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H5=-1, RCVD_IN_MSPIKE_WL=-0.01, RCVD_IN_VALIDITY_CERTIFIED_BLOCKED=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=unavailable 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: pass (identity @redhat.com) X-ZM-MESSAGEID: 1748246796991116600 From: Jamin Lin To improve code readability and maintainability of do_hash_operation(), this commit introduces a new helper function: hash_prepare_sg_iov(). This function handles scatter-gather (SG) mode setup, including SG list parsing, address mapping, and optional accumulation mode support with padding detection. No functional changes are introduced. Signed-off-by: Jamin Lin Reviewed-by: C=C3=A9dric Le Goater Link: https://lore.kernel.org/qemu-devel/20250515081008.583578-6-jamin_lin@= aspeedtech.com Signed-off-by: C=C3=A9dric Le Goater --- hw/misc/aspeed_hace.c | 111 ++++++++++++++++++++++++------------------ 1 file changed, 63 insertions(+), 48 deletions(-) diff --git a/hw/misc/aspeed_hace.c b/hw/misc/aspeed_hace.c index 42c6f29f8262..22eea62693c7 100644 --- a/hw/misc/aspeed_hace.c +++ b/hw/misc/aspeed_hace.c @@ -167,6 +167,67 @@ static int hash_prepare_direct_iov(AspeedHACEState *s,= struct iovec *iov) =20 return iov_idx; } + +static int hash_prepare_sg_iov(AspeedHACEState *s, struct iovec *iov, + bool acc_mode, bool *acc_final_request) +{ + uint32_t total_msg_len; + uint32_t pad_offset; + uint32_t len =3D 0; + uint32_t sg_addr; + uint32_t src; + int iov_idx; + hwaddr plen; + void *haddr; + + for (iov_idx =3D 0; !(len & SG_LIST_LEN_LAST); iov_idx++) { + if (iov_idx =3D=3D ASPEED_HACE_MAX_SG) { + qemu_log_mask(LOG_GUEST_ERROR, + "%s: Failed to set end of sg list marker\n", + __func__); + return -1; + } + + src =3D s->regs[R_HASH_SRC] + (iov_idx * SG_LIST_ENTRY_SIZE); + + len =3D address_space_ldl_le(&s->dram_as, src, + MEMTXATTRS_UNSPECIFIED, NULL); + sg_addr =3D address_space_ldl_le(&s->dram_as, src + SG_LIST_LEN_SI= ZE, + MEMTXATTRS_UNSPECIFIED, NULL); + sg_addr &=3D SG_LIST_ADDR_MASK; + + plen =3D len & SG_LIST_LEN_MASK; + haddr =3D address_space_map(&s->dram_as, sg_addr, &plen, false, + MEMTXATTRS_UNSPECIFIED); + + if (haddr =3D=3D NULL) { + qemu_log_mask(LOG_GUEST_ERROR, + "%s: Unable to map address, sg_addr=3D0x%x, " + "plen=3D0x%" HWADDR_PRIx "\n", + __func__, sg_addr, plen); + return -1; + } + + iov[iov_idx].iov_base =3D haddr; + if (acc_mode) { + s->total_req_len +=3D plen; + + if (has_padding(s, &iov[iov_idx], plen, &total_msg_len, + &pad_offset)) { + /* Padding being present indicates the final request */ + *acc_final_request =3D true; + iov[iov_idx].iov_len =3D pad_offset; + } else { + iov[iov_idx].iov_len =3D plen; + } + } else { + iov[iov_idx].iov_len =3D plen; + } + } + + return iov_idx; +} + static void do_hash_operation(AspeedHACEState *s, int algo, bool sg_mode, bool acc_mode) { @@ -174,15 +235,8 @@ static void do_hash_operation(AspeedHACEState *s, int = algo, bool sg_mode, struct iovec iov[ASPEED_HACE_MAX_SG]; bool acc_final_request =3D false; Error *local_err =3D NULL; - uint32_t total_msg_len; size_t digest_len =3D 0; - uint32_t sg_addr =3D 0; - uint32_t pad_offset; - int iov_idx =3D 0; - uint32_t len =3D 0; - uint32_t src =3D 0; - void *haddr; - hwaddr plen; + int iov_idx =3D -1; =20 if (acc_mode && s->hash_ctx =3D=3D NULL) { s->hash_ctx =3D qcrypto_hash_new(algo, &local_err); @@ -196,46 +250,7 @@ static void do_hash_operation(AspeedHACEState *s, int = algo, bool sg_mode, =20 /* Prepares the iov for hashing operations based on the selected mode = */ if (sg_mode) { - for (iov_idx =3D 0; !(len & SG_LIST_LEN_LAST); iov_idx++) { - if (iov_idx =3D=3D ASPEED_HACE_MAX_SG) { - qemu_log_mask(LOG_GUEST_ERROR, - "aspeed_hace: guest failed to set end of sg list m= arker\n"); - break; - } - - src =3D s->regs[R_HASH_SRC] + (iov_idx * SG_LIST_ENTRY_SIZE); - - len =3D address_space_ldl_le(&s->dram_as, src, - MEMTXATTRS_UNSPECIFIED, NULL); - - sg_addr =3D address_space_ldl_le(&s->dram_as, src + SG_LIST_LE= N_SIZE, - MEMTXATTRS_UNSPECIFIED, NULL); - sg_addr &=3D SG_LIST_ADDR_MASK; - - plen =3D len & SG_LIST_LEN_MASK; - haddr =3D address_space_map(&s->dram_as, sg_addr, &plen, false, - MEMTXATTRS_UNSPECIFIED); - if (haddr =3D=3D NULL) { - qemu_log_mask(LOG_GUEST_ERROR, - "%s: qcrypto failed\n", __func__); - return; - } - iov[iov_idx].iov_base =3D haddr; - if (acc_mode) { - s->total_req_len +=3D plen; - - if (has_padding(s, &iov[iov_idx], plen, &total_msg_len, - &pad_offset)) { - /* Padding being present indicates the final request */ - acc_final_request =3D true; - iov[iov_idx].iov_len =3D pad_offset; - } else { - iov[iov_idx].iov_len =3D plen; - } - } else { - iov[iov_idx].iov_len =3D plen; - } - } + iov_idx =3D hash_prepare_sg_iov(s, iov, acc_mode, &acc_final_reque= st); } else { iov_idx =3D hash_prepare_direct_iov(s, iov); } --=20 2.49.0