From patchwork Tue Feb 9 20:35:49 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chris Browy X-Patchwork-Id: 12079133 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=-11.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT 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 4E638C433E0 for ; Tue, 9 Feb 2021 20:49:10 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 524AD64E30 for ; Tue, 9 Feb 2021 20:49:09 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 524AD64E30 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=avery-design.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:58218 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1l9ZwZ-0007x6-Pc for qemu-devel@archiver.kernel.org; Tue, 09 Feb 2021 15:49:07 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:45364) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1l9Zjo-0007pq-MC for qemu-devel@nongnu.org; Tue, 09 Feb 2021 15:35:56 -0500 Received: from static-71-162-116-19.bstnma.fios.verizon.net ([71.162.116.19]:55806 helo=server4.localdomain) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1l9Zjk-0003sn-V9 for qemu-devel@nongnu.org; Tue, 09 Feb 2021 15:35:55 -0500 Received: by server4.localdomain (Postfix, from userid 503) id 82A1D60310050; Tue, 9 Feb 2021 15:35:50 -0500 (EST) From: Chris Browy To: cbrowy@avery-design.com Subject: [RFC PATCH v2 1/2] Basic PCIe DOE support Date: Tue, 9 Feb 2021 15:35:49 -0500 Message-Id: <1612902949-9992-1-git-send-email-cbrowy@avery-design.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1612900760-7361-1-git-send-email-cbrowy@avery-design.com> References: <1612900760-7361-1-git-send-email-cbrowy@avery-design.com> Received-SPF: none client-ip=71.162.116.19; envelope-from=chris@server4.localdomain; helo=server4.localdomain X-Spam_score_int: -11 X-Spam_score: -1.2 X-Spam_bar: - X-Spam_report: (-1.2 / 5.0 requ) BAYES_00=-1.9, HEADER_FROM_DIFFERENT_DOMAINS=0.249, KHOP_HELO_FCRDNS=0.399, NO_DNS_FOR_FROM=0.001, SPF_HELO_NONE=0.001, SPF_NONE=0.001 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: ben.widawsky@intel.com, david@redhat.com, qemu-devel@nongnu.org, vishal.l.verma@intel.com, jgroves@micron.com, armbru@redhat.com, linux-cxl@vger.kernel.org, f4bug@amsat.org, mst@redhat.com, Jonathan.Cameron@huawei.com, imammedo@redhat.com, dan.j.williams@intel.com, ira.weiny@intel.com Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" --- MAINTAINERS | 7 + hw/pci/meson.build | 1 + hw/pci/pcie.c | 2 +- hw/pci/pcie_doe.c | 414 ++++++++++++++++++++++++++++++ include/hw/pci/pci_ids.h | 2 + include/hw/pci/pcie.h | 1 + include/hw/pci/pcie_doe.h | 166 ++++++++++++ include/hw/pci/pcie_regs.h | 4 + include/standard-headers/linux/pci_regs.h | 3 +- 9 files changed, 598 insertions(+), 2 deletions(-) create mode 100644 hw/pci/pcie_doe.c create mode 100644 include/hw/pci/pcie_doe.h diff --git a/MAINTAINERS b/MAINTAINERS index 981dc92..4fb865e 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -1655,6 +1655,13 @@ F: docs/pci* F: docs/specs/*pci* F: default-configs/pci.mak +PCIE DOE +M: Huai-Cheng Kuo +M: Chris Browy +S: Supported +F: include/hw/pci/pcie_doe.h +F: hw/pci/pcie_doe.c + ACPI/SMBIOS M: Michael S. Tsirkin M: Igor Mammedov diff --git a/hw/pci/meson.build b/hw/pci/meson.build index 5c4bbac..115e502 100644 --- a/hw/pci/meson.build +++ b/hw/pci/meson.build @@ -12,6 +12,7 @@ pci_ss.add(files( # allow plugging PCIe devices into PCI buses, include them even if # CONFIG_PCI_EXPRESS=n. pci_ss.add(files('pcie.c', 'pcie_aer.c')) +pci_ss.add(files('pcie_doe.c')) softmmu_ss.add(when: 'CONFIG_PCI_EXPRESS', if_true: files('pcie_port.c', 'pcie_host.c')) softmmu_ss.add_all(when: 'CONFIG_PCI', if_true: pci_ss) diff --git a/hw/pci/pcie.c b/hw/pci/pcie.c index 1ecf6f6..f7516c4 100644 --- a/hw/pci/pcie.c +++ b/hw/pci/pcie.c @@ -735,7 +735,7 @@ void pcie_cap_slot_write_config(PCIDevice *dev, hotplug_event_notify(dev); - /* + /* * 6.7.3.2 Command Completed Events * * Software issues a command to a hot-plug capable Downstream Port by diff --git a/hw/pci/pcie_doe.c b/hw/pci/pcie_doe.c new file mode 100644 index 0000000..df8e92e --- /dev/null +++ b/hw/pci/pcie_doe.c @@ -0,0 +1,414 @@ +#include "qemu/osdep.h" +#include "qemu/log.h" +#include "qemu/error-report.h" +#include "qapi/error.h" +#include "qemu/range.h" +#include "hw/pci/pci.h" +#include "hw/pci/pcie.h" +#include "hw/pci/pcie_doe.h" +#include "hw/pci/msi.h" +#include "hw/pci/msix.h" + +/* + * DOE Default Protocols (Discovery, CMA) + */ +/* Discovery Request Object */ +struct doe_discovery { + DOEHeader header; + uint8_t index; + uint8_t reserved[3]; +} QEMU_PACKED; + +/* Discovery Response Object */ +struct doe_discovery_rsp { + DOEHeader header; + uint16_t vendor_id; + uint8_t doe_type; + uint8_t next_index; +} QEMU_PACKED; + +/* Callback for Discovery */ +static bool pcie_doe_discovery_rsp(DOECap *doe_cap) +{ + PCIEDOE *doe = doe_cap->doe; + struct doe_discovery *req = pcie_doe_get_req(doe_cap); + uint8_t index = req->index; + DOEProtocol *prot = NULL; + + /* Request length mismatch, discard */ + if (req->header.length < dwsizeof(struct doe_discovery)) { + return DOE_DISCARD; + } + + /* Point to the requested protocol */ + if (index < doe->protocol_num) { + prot = &doe->protocols[index]; + } + + struct doe_discovery_rsp rsp = { + .header = { + .vendor_id = PCI_VENDOR_ID_PCI_SIG, + .doe_type = PCI_SIG_DOE_DISCOVERY, + .reserved = 0x0, + .length = dwsizeof(struct doe_discovery_rsp), + }, + .vendor_id = (prot) ? prot->vendor_id : 0xFFFF, + .doe_type = (prot) ? prot->doe_type : 0xFF, + .next_index = (index + 1) < doe->protocol_num ? + (index + 1) : 0, + }; + + pcie_doe_set_rsp(doe_cap, &rsp); + + return DOE_SUCCESS; +} + +/* Callback for CMA */ +static bool pcie_doe_cma_rsp(DOECap *doe_cap) +{ + doe_cap->status.error = 1; + + memset(doe_cap->read_mbox, 0, + PCI_DOE_MAX_DW_SIZE * sizeof(uint32_t)); + + doe_cap->write_mbox_len = 0; + + return DOE_DISCARD; +} + +/* + * DOE Utilities + */ +static void pcie_doe_reset_mbox(DOECap *st) +{ + st->read_mbox_idx = 0; + + st->read_mbox_len = 0; + st->write_mbox_len = 0; + + memset(st->read_mbox, 0, PCI_DOE_MAX_DW_SIZE * sizeof(uint32_t)); + memset(st->write_mbox, 0, PCI_DOE_MAX_DW_SIZE * sizeof(uint32_t)); +} + +/* + * Initialize the list and protocol for a device. + * This function won't add the DOE capabitity to your PCIe device. + */ +void pcie_doe_init(PCIDevice *dev, PCIEDOE *doe) +{ + doe->pdev = dev; + doe->head = NULL; + doe->protocol_num = 0; + + /* Register two default protocol */ + //TODO : LINK LIST + pcie_doe_register_protocol(doe, PCI_VENDOR_ID_PCI_SIG, + PCI_SIG_DOE_DISCOVERY, pcie_doe_discovery_rsp); + pcie_doe_register_protocol(doe, PCI_VENDOR_ID_PCI_SIG, + PCI_SIG_DOE_CMA, pcie_doe_cma_rsp); +} + +int pcie_cap_doe_add(PCIEDOE *doe, uint16_t offset, bool intr, uint16_t vec) { + DOECap *new_cap, **ptr; + PCIDevice *dev = doe->pdev; + + pcie_add_capability(dev, PCI_EXT_CAP_ID_DOE, PCI_DOE_VER, offset, + PCI_DOE_SIZEOF); + + ptr = &doe->head; + /* Insert the new DOE at the end of linked list */ + while (*ptr) { + if (range_covers_byte((*ptr)->offset, PCI_DOE_SIZEOF, offset) || + (*ptr)->cap.vec == vec) { + return -EINVAL; + } + + ptr = &(*ptr)->next; + } + new_cap = g_malloc0(sizeof(DOECap)); + *ptr = new_cap; + + new_cap->doe = doe; + new_cap->offset = offset; + new_cap->next = NULL; + + /* Configure MSI/MSI-X */ + if (intr && (msi_present(dev) || msix_present(dev))) { + new_cap->cap.intr = intr; + new_cap->cap.vec = vec; + } + + /* Set up W/R Mailbox buffer */ + new_cap->write_mbox = g_malloc0(PCI_DOE_MAX_DW_SIZE * sizeof(uint32_t)); + new_cap->read_mbox = g_malloc0(PCI_DOE_MAX_DW_SIZE * sizeof(uint32_t)); + + pcie_doe_reset_mbox(new_cap); + + return 0; +} + +void pcie_doe_uninit(PCIEDOE *doe) { + PCIDevice *dev = doe->pdev; + DOECap *cap; + + pci_del_capability(dev, PCI_EXT_CAP_ID_DOE, PCI_DOE_SIZEOF); + + cap = doe->head; + while (cap) { + doe->head = doe->head->next; + + g_free(cap->read_mbox); + g_free(cap->write_mbox); + cap->read_mbox = NULL; + cap->write_mbox = NULL; + g_free(cap); + cap = doe->head; + } +} + +void pcie_doe_register_protocol(PCIEDOE *doe, uint16_t vendor_id, + uint8_t doe_type, bool (*set_rsp)(DOECap *)) +{ + /* Protocol num should not exceed 256 */ + assert(doe->protocol_num < PCI_DOE_PROTOCOL_MAX); + + doe->protocols[doe->protocol_num].vendor_id = vendor_id; + doe->protocols[doe->protocol_num].doe_type = doe_type; + doe->protocols[doe->protocol_num].set_rsp = set_rsp; + + doe->protocol_num++; +} + +uint32_t pcie_doe_build_protocol(DOEProtocol *p) +{ + return DATA_OBJ_BUILD_HEADER1(p->vendor_id, p->doe_type); +} + +/* Return the pointer of DOE request in write mailbox buffer */ +void *pcie_doe_get_req(DOECap *doe_cap) +{ + return doe_cap->write_mbox; +} + +/* Copy the response to read mailbox buffer */ +void pcie_doe_set_rsp(DOECap *doe_cap, void *rsp) +{ + uint32_t len = pcie_doe_object_len(rsp); + + memcpy(doe_cap->read_mbox + doe_cap->read_mbox_len, + rsp, len * sizeof(uint32_t)); + doe_cap->read_mbox_len += len; +} + +/* Get Data Object length */ +uint32_t pcie_doe_object_len(void *obj) +{ + return (obj)? ((DOEHeader *)obj)->length : 0; +} + +static void pcie_doe_write_mbox(DOECap *doe_cap, uint32_t val) +{ + memcpy(doe_cap->write_mbox + doe_cap->write_mbox_len, &val, sizeof(uint32_t)); + + if (doe_cap->write_mbox_len == 1) { + DOE_DBG(" Capture DOE request DO length = %d\n", val & 0x0003ffff); + } + + doe_cap->write_mbox_len++; +} + +static void pcie_doe_irq_assert(DOECap *doe_cap) +{ + PCIDevice *dev = doe_cap->doe->pdev; + + if (doe_cap->cap.intr && doe_cap->ctrl.intr) { + /* Interrupt notify */ + if (msix_enabled(dev)) { + msix_notify(dev, doe_cap->cap.vec); + } else if (msi_enabled(dev)) { + msi_notify(dev, doe_cap->cap.vec); + } + /* Not support legacy IRQ */ + } +} + +static void pcie_doe_set_ready(DOECap *doe_cap, bool rdy) +{ + doe_cap->status.ready = rdy; + + if (rdy) { + pcie_doe_irq_assert(doe_cap); + } +} + +static void pcie_doe_set_error(DOECap *doe_cap, bool err) +{ + doe_cap->status.error = err; + + if (err) { + pcie_doe_irq_assert(doe_cap); + } +} + +DOECap *pcie_doe_covers_addr(PCIEDOE *doe, uint32_t addr) +{ + DOECap *ptr = doe->head; + + /* If overlaps DOE range. PCIe Capability Header won't be included. */ + while (ptr && + !range_covers_byte(ptr->offset + PCI_EXP_DOE_CAP, PCI_DOE_SIZEOF - 4, addr)) { + ptr = ptr->next; + } + + return ptr; +} + +uint32_t pcie_doe_read_config(DOECap *doe_cap, + uint32_t addr, int size) +{ + uint32_t ret = 0, shift, mask = 0xFFFFFFFF; + uint16_t doe_offset = doe_cap->offset; + + /* If overlaps DOE range. PCIe Capability Header won't be included. */ + if (range_covers_byte(doe_offset + PCI_EXP_DOE_CAP, PCI_DOE_SIZEOF - 4, addr)) { + addr -= doe_offset; + + if (range_covers_byte(PCI_EXP_DOE_CAP, sizeof(uint32_t), addr)) { + ret = FIELD_DP32(ret, PCI_DOE_CAP_REG, INTR_SUPP, + doe_cap->cap.intr); + ret = FIELD_DP32(ret, PCI_DOE_CAP_REG, DOE_INTR_MSG_NUM, + doe_cap->cap.vec); + } else if (range_covers_byte(PCI_EXP_DOE_CTRL, sizeof(uint32_t), addr)) { + /* Must return ABORT=0 and GO=0 */ + ret = FIELD_DP32(ret, PCI_DOE_CAP_CONTROL, DOE_INTR_EN, + doe_cap->ctrl.intr); + DOE_DBG(" CONTROL REG=%x\n", ret); + } else if (range_covers_byte(PCI_EXP_DOE_STATUS, sizeof(uint32_t), addr)) { + ret = FIELD_DP32(ret, PCI_DOE_CAP_STATUS, DOE_BUSY, + doe_cap->status.busy); + ret = FIELD_DP32(ret, PCI_DOE_CAP_STATUS, DOE_INTR_STATUS, + doe_cap->status.intr); + ret = FIELD_DP32(ret, PCI_DOE_CAP_STATUS, DOE_ERROR, + doe_cap->status.error); + ret = FIELD_DP32(ret, PCI_DOE_CAP_STATUS, DATA_OBJ_RDY, + doe_cap->status.ready); + } else if (range_covers_byte(PCI_EXP_DOE_RD_DATA_MBOX, sizeof(uint32_t), addr)) { + /* Check that READY is set */ + if (!doe_cap->status.ready) { + /* Return 0 if not ready */ + DOE_DBG(" RD MBOX RETURN=%x\n", ret); + } else { + /* Deposit next DO DW into read mbox */ + DOE_DBG(" RD MBOX, DATA OBJECT READY," + " CURRENT DO DW OFFSET=%x\n", + doe_cap->read_mbox_idx); + + ret = doe_cap->read_mbox[doe_cap->read_mbox_idx]; + + DOE_DBG(" RD MBOX DW=%x\n", ret); + DOE_DBG(" RD MBOX DW OFFSET=%d, RD MBOX LENGTH=%d\n", + doe_cap->read_mbox_idx, doe_cap->read_mbox_len); + } + } else if (range_covers_byte(PCI_EXP_DOE_WR_DATA_MBOX, sizeof(uint32_t), addr)) { + DOE_DBG(" WR MBOX, local_val =%x\n", ret); + } + } + + /* Alignment */ + shift = addr % sizeof(uint32_t); + if (shift) { + ret >>= shift * 8; + } + mask >>= (sizeof(uint32_t) - size) * 8; + + return ret & mask; +} + +void pcie_doe_write_config(DOECap *doe_cap, + uint32_t addr, uint32_t val, int size) +{ + PCIEDOE *doe = doe_cap->doe; + uint16_t doe_offset = doe_cap->offset; + int p; + bool discard; + uint32_t shift; + + DOE_DBG(" addr=%x, val=%x, size=%x\n", addr, val, size); + + /* If overlaps DOE range. PCIe Capability Header won't be included. */ + if (range_covers_byte(doe_offset + PCI_EXP_DOE_CAP, PCI_DOE_SIZEOF - 4, addr)) { + /* Alignment */ + shift = addr % sizeof(uint32_t); + addr -= (doe_offset - shift); + val <<= shift * 8; + + switch (addr) { + case PCI_EXP_DOE_CTRL: + DOE_DBG(" CONTROL=%x\n", val); + if (FIELD_EX32(val, PCI_DOE_CAP_CONTROL, DOE_ABORT)) { + /* If ABORT, clear status reg DOE Error and DOE Ready */ + DOE_DBG(" Setting ABORT\n"); + pcie_doe_set_ready(doe_cap, 0); + pcie_doe_set_error(doe_cap, 0); + pcie_doe_reset_mbox(doe_cap); + } else if (FIELD_EX32(val, PCI_DOE_CAP_CONTROL, DOE_GO)) { + DOE_DBG(" CONTROL GO=%x\n", val); + /* + * Check protocol the incoming request in write_mbox and + * memcpy the corresponding response to read_mbox. + * + * "discard" should be set up if the response callback + * function could not deal with request (e.g. length + * mismatch) or the protocol of request was not found. + */ + discard = DOE_DISCARD; + for (p = 0; p < doe->protocol_num; p++) { + if (doe_cap->write_mbox[0] == + pcie_doe_build_protocol(&doe->protocols[p])) { + /* Found */ + DOE_DBG(" DOE PROTOCOL=%x\n", doe_cap->write_mbox[0]); + /* + * Spec: + * If the number of DW transferred does not match the + * indicated Length for a data object, then the + * data object must be silently discarded. + */ + if (doe_cap->write_mbox_len == + pcie_doe_object_len(pcie_doe_get_req(doe_cap))) + discard = doe->protocols[p].set_rsp(doe_cap); + break; + } + } + + /* Set DOE Ready */ + if (!discard) { + pcie_doe_set_ready(doe_cap, 1); + } else { + pcie_doe_reset_mbox(doe_cap); + } + } else if (FIELD_EX32(val, PCI_DOE_CAP_CONTROL, DOE_INTR_EN)) { + doe_cap->ctrl.intr = 1; + } + break; + case PCI_EXP_DOE_RD_DATA_MBOX: + /* Read MBOX */ + DOE_DBG(" INCR RD MBOX DO DW OFFSET=%d\n", doe_cap->read_mbox_idx); + doe_cap->read_mbox_idx += 1; + /* Last DW */ + if (doe_cap->read_mbox_idx >= doe_cap->read_mbox_len) { + pcie_doe_reset_mbox(doe_cap); + pcie_doe_set_ready(doe_cap, 0); + } + break; + case PCI_EXP_DOE_WR_DATA_MBOX: + /* Write MBOX */ + DOE_DBG(" WR MBOX=%x, DW OFFSET = %d\n", val, doe_cap->write_mbox_len); + pcie_doe_write_mbox(doe_cap, val); + break; + case PCI_EXP_DOE_STATUS: + case PCI_EXP_DOE_CAP: + default: + break; + } + } +} diff --git a/include/hw/pci/pci_ids.h b/include/hw/pci/pci_ids.h index 76bf3ed..636b2e8 100644 --- a/include/hw/pci/pci_ids.h +++ b/include/hw/pci/pci_ids.h @@ -157,6 +157,8 @@ /* Vendors and devices. Sort key: vendor first, device next. */ +#define PCI_VENDOR_ID_PCI_SIG 0x0001 + #define PCI_VENDOR_ID_LSI_LOGIC 0x1000 #define PCI_DEVICE_ID_LSI_53C810 0x0001 #define PCI_DEVICE_ID_LSI_53C895A 0x0012 diff --git a/include/hw/pci/pcie.h b/include/hw/pci/pcie.h index 14c58eb..47d6f66 100644 --- a/include/hw/pci/pcie.h +++ b/include/hw/pci/pcie.h @@ -25,6 +25,7 @@ #include "hw/pci/pcie_regs.h" #include "hw/pci/pcie_aer.h" #include "hw/hotplug.h" +#include "hw/pci/pcie_doe.h" typedef enum { /* for attention and power indicator */ diff --git a/include/hw/pci/pcie_doe.h b/include/hw/pci/pcie_doe.h new file mode 100644 index 0000000..f497075 --- /dev/null +++ b/include/hw/pci/pcie_doe.h @@ -0,0 +1,166 @@ +#ifndef PCIE_DOE_H +#define PCIE_DOE_H + +#include "qemu/range.h" +#include "qemu/typedefs.h" +#include "hw/register.h" + +/* + * PCI DOE register defines 7.9.xx + */ +/* DOE Capabilities Register */ +#define PCI_EXP_DOE_CAP 0x04 +REG32(PCI_DOE_CAP_REG, 0) + FIELD(PCI_DOE_CAP_REG, INTR_SUPP, 0, 1) + FIELD(PCI_DOE_CAP_REG, DOE_INTR_MSG_NUM, 1, 11) + +/* DOE Control Register */ +#define PCI_EXP_DOE_CTRL 0x08 +REG32(PCI_DOE_CAP_CONTROL, 0) + FIELD(PCI_DOE_CAP_CONTROL, DOE_ABORT, 0, 1) + FIELD(PCI_DOE_CAP_CONTROL, DOE_INTR_EN, 1, 1) + FIELD(PCI_DOE_CAP_CONTROL, DOE_GO, 31, 1) + +/* DOE Status Register */ +#define PCI_EXP_DOE_STATUS 0x0c +REG32(PCI_DOE_CAP_STATUS, 0) + FIELD(PCI_DOE_CAP_STATUS, DOE_BUSY, 0, 1) + FIELD(PCI_DOE_CAP_STATUS, DOE_INTR_STATUS, 1, 1) + FIELD(PCI_DOE_CAP_STATUS, DOE_ERROR, 2, 1) + FIELD(PCI_DOE_CAP_STATUS, DATA_OBJ_RDY, 31, 1) + +/* DOE Write Data Mailbox Register */ +#define PCI_EXP_DOE_WR_DATA_MBOX 0x10 + +/* DOE Read Data Mailbox Register */ +#define PCI_EXP_DOE_RD_DATA_MBOX 0x14 + +/* + * PCI DOE register defines 7.9.xx + */ +/* Table 7-x2 */ +#define PCI_SIG_DOE_DISCOVERY 0x00 +#define PCI_SIG_DOE_CMA 0x01 + +#define DATA_OBJ_BUILD_HEADER1(v, p) ((p << 16) | v) + +/* Figure 6-x1 */ +#define DATA_OBJECT_HEADER1_OFFSET 0 +#define DATA_OBJECT_HEADER2_OFFSET 1 +#define DATA_OBJECT_CONTENT_OFFSET 2 + +#define PCI_DOE_MAX_DW_SIZE (1 << 18) +#define PCI_DOE_PROTOCOL_MAX 256 + +/* + * Self-defined Marco + */ +/* Request/Response State */ +#define DOE_SUCCESS 0 +#define DOE_DISCARD 1 + +/* An invalid vector number for MSI/MSI-x */ +#define DOE_NO_INTR (~0) + +/* + * DOE Protocol - Data Object + */ +typedef struct DOEHeader DOEHeader; +typedef struct DOEProtocol DOEProtocol; +typedef struct PCIEDOE PCIEDOE; +typedef struct DOECap DOECap; + +struct DOEHeader { + uint16_t vendor_id; + uint8_t doe_type; + uint8_t reserved; + struct { + uint32_t length:18; + uint32_t reserved2:14; + }; +} QEMU_PACKED; + +/* Protocol infos and rsp function callback */ +struct DOEProtocol { + uint16_t vendor_id; + uint8_t doe_type; + + bool (*set_rsp)(DOECap *); +}; + +struct PCIEDOE { + PCIDevice *pdev; + DOECap *head; + + /* Protocols and its callback response */ + DOEProtocol protocols[PCI_DOE_PROTOCOL_MAX]; + uint32_t protocol_num; +}; + +struct DOECap { + PCIEDOE *doe; + + /* Capability offset */ + uint16_t offset; + + /* Next DOE capability */ + DOECap *next; + + /* Capability */ + struct { + bool intr; + uint16_t vec; + } cap; + + /* Control */ + struct { + bool abort; + bool intr; + bool go; + } ctrl; + + /* Status */ + struct { + bool busy; + bool intr; + bool error; + bool ready; + } status; + + /* Mailbox buffer for device */ + uint32_t *write_mbox; + uint32_t *read_mbox; + + /* Mailbox position indicator */ + uint32_t read_mbox_idx; + uint32_t read_mbox_len; + uint32_t write_mbox_len; +}; + +void pcie_doe_init(PCIDevice *dev, PCIEDOE *doe); +int pcie_cap_doe_add(PCIEDOE *doe, uint16_t offset, bool intr, uint16_t vec); +void pcie_doe_uninit(PCIEDOE *doe); +void pcie_doe_register_protocol(PCIEDOE *doe, uint16_t vendor_id, + uint8_t doe_type, + bool (*set_rsp)(DOECap *)); +uint32_t pcie_doe_build_protocol(DOEProtocol *p); +DOECap *pcie_doe_covers_addr(PCIEDOE *doe, uint32_t addr); +uint32_t pcie_doe_read_config(DOECap *doe_cap, uint32_t addr, int size); +void pcie_doe_write_config(DOECap *doe_cap, uint32_t addr, + uint32_t val, int size); + +/* Utility functions for set_rsp in DOEProtocol */ +void *pcie_doe_get_req(DOECap *doe_cap); +void pcie_doe_set_rsp(DOECap *doe_cap, void *rsp); +uint32_t pcie_doe_object_len(void *obj); + +#define DOE_DEBUG +#ifdef DOE_DEBUG +#define DOE_DBG(...) printf(__VA_ARGS__) +#else +#define DOE_DBG(...) {} +#endif + +#define dwsizeof(s) ((sizeof(s) + 4 - 1) / 4) + +#endif /* PCIE_DOE_H */ diff --git a/include/hw/pci/pcie_regs.h b/include/hw/pci/pcie_regs.h index 1db86b0..963dc2e 100644 --- a/include/hw/pci/pcie_regs.h +++ b/include/hw/pci/pcie_regs.h @@ -179,4 +179,8 @@ typedef enum PCIExpLinkWidth { #define PCI_ACS_VER 0x1 #define PCI_ACS_SIZEOF 8 +/* DOE Capability Register Fields */ +#define PCI_DOE_VER 0x1 +#define PCI_DOE_SIZEOF 24 + #endif /* QEMU_PCIE_REGS_H */ diff --git a/include/standard-headers/linux/pci_regs.h b/include/standard-headers/linux/pci_regs.h index e709ae8..4a7b7a4 100644 --- a/include/standard-headers/linux/pci_regs.h +++ b/include/standard-headers/linux/pci_regs.h @@ -730,7 +730,8 @@ #define PCI_EXT_CAP_ID_DVSEC 0x23 /* Designated Vendor-Specific */ #define PCI_EXT_CAP_ID_DLF 0x25 /* Data Link Feature */ #define PCI_EXT_CAP_ID_PL_16GT 0x26 /* Physical Layer 16.0 GT/s */ -#define PCI_EXT_CAP_ID_MAX PCI_EXT_CAP_ID_PL_16GT +#define PCI_EXT_CAP_ID_DOE 0x2E /* Data Object Exchange */ +#define PCI_EXT_CAP_ID_MAX PCI_EXT_CAP_ID_DOE #define PCI_EXT_CAP_DSN_SIZEOF 12 #define PCI_EXT_CAP_MCAST_ENDPOINT_SIZEOF 40 From patchwork Tue Feb 9 20:36:03 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chris Browy X-Patchwork-Id: 12079123 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=-11.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,USER_AGENT_GIT 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 B3763C433E0 for ; Tue, 9 Feb 2021 20:43:26 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id E9A4664E6C for ; Tue, 9 Feb 2021 20:43:25 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org E9A4664E6C Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=avery-design.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:48958 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1l9Zr2-0003Jh-KG for qemu-devel@archiver.kernel.org; Tue, 09 Feb 2021 15:43:24 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:45446) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1l9Zk6-00081A-OV for qemu-devel@nongnu.org; Tue, 09 Feb 2021 15:36:14 -0500 Received: from static-71-162-116-19.bstnma.fios.verizon.net ([71.162.116.19]:55816 helo=server4.localdomain) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1l9Zk1-0003yC-Tu for qemu-devel@nongnu.org; Tue, 09 Feb 2021 15:36:13 -0500 Received: by server4.localdomain (Postfix, from userid 503) id F359E60310054; Tue, 9 Feb 2021 15:36:06 -0500 (EST) From: Chris Browy To: cbrowy@avery-design.com Subject: [RFC v2 2/2] Basic CXL DOE for CDAT and Compliance Mode Date: Tue, 9 Feb 2021 15:36:03 -0500 Message-Id: <1612902963-10071-1-git-send-email-cbrowy@avery-design.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1612900760-7361-1-git-send-email-cbrowy@avery-design.com> References: <1612900760-7361-1-git-send-email-cbrowy@avery-design.com> Received-SPF: none client-ip=71.162.116.19; envelope-from=chris@server4.localdomain; helo=server4.localdomain X-Spam_score_int: -11 X-Spam_score: -1.2 X-Spam_bar: - X-Spam_report: (-1.2 / 5.0 requ) BAYES_00=-1.9, HEADER_FROM_DIFFERENT_DOMAINS=0.249, KHOP_HELO_FCRDNS=0.399, NO_DNS_FOR_FROM=0.001, SPF_HELO_NONE=0.001, SPF_NONE=0.001 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: ben.widawsky@intel.com, david@redhat.com, qemu-devel@nongnu.org, vishal.l.verma@intel.com, jgroves@micron.com, armbru@redhat.com, linux-cxl@vger.kernel.org, f4bug@amsat.org, mst@redhat.com, Jonathan.Cameron@huawei.com, imammedo@redhat.com, dan.j.williams@intel.com, ira.weiny@intel.com Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" --- hw/cxl/cxl-component-utils.c | 132 +++++++++++++++++++ hw/mem/cxl_type3.c | 172 ++++++++++++++++++++++++ include/hw/cxl/cxl_cdat.h | 120 +++++++++++++++++ include/hw/cxl/cxl_compl.h | 289 +++++++++++++++++++++++++++++++++++++++++ include/hw/cxl/cxl_component.h | 126 ++++++++++++++++++ include/hw/cxl/cxl_device.h | 3 + include/hw/cxl/cxl_pci.h | 4 + 7 files changed, 846 insertions(+) create mode 100644 include/hw/cxl/cxl_cdat.h create mode 100644 include/hw/cxl/cxl_compl.h diff --git a/hw/cxl/cxl-component-utils.c b/hw/cxl/cxl-component-utils.c index e1bcee5..fc6c538 100644 --- a/hw/cxl/cxl-component-utils.c +++ b/hw/cxl/cxl-component-utils.c @@ -195,3 +195,135 @@ void cxl_component_create_dvsec(CXLComponentState *cxl, uint16_t length, range_init_nofail(&cxl->dvsecs[type], cxl->dvsec_offset, length); cxl->dvsec_offset += length; } + +/* Return the sum of bytes */ +static void cdat_ent_init(CDATStruct *cs, void *base, uint32_t len) +{ + cs->base = base; + cs->length = len; +} + +void cxl_doe_cdat_init(CXLComponentState *cxl_cstate) +{ + uint8_t sum = 0; + uint32_t len = 0; + int i, j; + + cxl_cstate->cdat_ent_len = 7; + cxl_cstate->cdat_ent = + g_malloc0(sizeof(CDATStruct) * cxl_cstate->cdat_ent_len); + + cdat_ent_init(&cxl_cstate->cdat_ent[0], + &cxl_cstate->cdat_header, sizeof(cxl_cstate->cdat_header)); + cdat_ent_init(&cxl_cstate->cdat_ent[1], + &cxl_cstate->dsmas, sizeof(cxl_cstate->dsmas)); + cdat_ent_init(&cxl_cstate->cdat_ent[2], + &cxl_cstate->dslbis, sizeof(cxl_cstate->dslbis)); + cdat_ent_init(&cxl_cstate->cdat_ent[3], + &cxl_cstate->dsmscis, sizeof(cxl_cstate->dsmscis)); + cdat_ent_init(&cxl_cstate->cdat_ent[4], + &cxl_cstate->dsis, sizeof(cxl_cstate->dsis)); + cdat_ent_init(&cxl_cstate->cdat_ent[5], + &cxl_cstate->dsemts, sizeof(cxl_cstate->dsemts)); + cdat_ent_init(&cxl_cstate->cdat_ent[6], + &cxl_cstate->sslbis, sizeof(cxl_cstate->sslbis)); + + /* Set the DSMAS entry, ent = 1 */ + cxl_cstate->dsmas.header.type = CDAT_TYPE_DSMAS; + cxl_cstate->dsmas.header.reserved = 0x0; + cxl_cstate->dsmas.header.length = sizeof(cxl_cstate->dsmas); + cxl_cstate->dsmas.DSMADhandle = 0x0; + cxl_cstate->dsmas.flags = 0x0; + cxl_cstate->dsmas.reserved2 = 0x0; + cxl_cstate->dsmas.DPA_base = 0x0; + cxl_cstate->dsmas.DPA_length = 0x40000; + + /* Set the DSLBIS entry, ent = 2 */ + cxl_cstate->dslbis.header.type = CDAT_TYPE_DSLBIS; + cxl_cstate->dslbis.header.reserved = 0; + cxl_cstate->dslbis.header.length = sizeof(cxl_cstate->dslbis); + cxl_cstate->dslbis.handle = 0; + cxl_cstate->dslbis.flags = 0; + cxl_cstate->dslbis.data_type = 0; + cxl_cstate->dslbis.reserved2 = 0; + cxl_cstate->dslbis.entry_base_unit = 0; + cxl_cstate->dslbis.entry[0] = 0; + cxl_cstate->dslbis.entry[1] = 0; + cxl_cstate->dslbis.entry[2] = 0; + cxl_cstate->dslbis.reserved3 = 0; + + /* Set the DSMSCIS entry, ent = 3 */ + cxl_cstate->dsmscis.header.type = CDAT_TYPE_DSMSCIS; + cxl_cstate->dsmscis.header.reserved = 0; + cxl_cstate->dsmscis.header.length = sizeof(cxl_cstate->dsmscis); + cxl_cstate->dsmscis.DSMASH_handle = 0; + cxl_cstate->dsmscis.reserved2[0] = 0; + cxl_cstate->dsmscis.reserved2[1] = 0; + cxl_cstate->dsmscis.reserved2[2] = 0; + cxl_cstate->dsmscis.memory_side_cache_size = 0; + cxl_cstate->dsmscis.cache_attributes = 0; + + /* Set the DSIS entry, ent = 4 */ + cxl_cstate->dsis.header.type = CDAT_TYPE_DSIS; + cxl_cstate->dsis.header.reserved = 0; + cxl_cstate->dsis.header.length = sizeof(cxl_cstate->dsis); + cxl_cstate->dsis.flags = 0; + cxl_cstate->dsis.handle = 0; + cxl_cstate->dsis.reserved2 = 0; + + /* Set the DSEMTS entry, ent = 5 */ + cxl_cstate->dsemts.header.type = CDAT_TYPE_DSEMTS; + cxl_cstate->dsemts.header.reserved = 0; + cxl_cstate->dsemts.header.length = sizeof(cxl_cstate->dsemts); + cxl_cstate->dsemts.DSMAS_handle = 0; + cxl_cstate->dsemts.EFI_memory_type_attr = 0; + cxl_cstate->dsemts.reserved2 = 0; + cxl_cstate->dsemts.DPA_offset = 0; + cxl_cstate->dsemts.DPA_length = 0; + + /* Set the SSLBIS entry, ent = 6 */ + cxl_cstate->sslbis.sslbis_h.header.type = CDAT_TYPE_SSLBIS; + cxl_cstate->sslbis.sslbis_h.header.reserved = 0; + cxl_cstate->sslbis.sslbis_h.header.length = sizeof(cxl_cstate->sslbis); + cxl_cstate->sslbis.sslbis_h.data_type = 0; + cxl_cstate->sslbis.sslbis_h.reserved2[0] = 0; + cxl_cstate->sslbis.sslbis_h.reserved2[1] = 0; + cxl_cstate->sslbis.sslbis_h.reserved2[2] = 0; + /* Set the SSLBE entry */ + cxl_cstate->sslbis.sslbe[0].port_x_id = 0; + cxl_cstate->sslbis.sslbe[0].port_y_id = 0; + cxl_cstate->sslbis.sslbe[0].latency_bandwidth = 0; + cxl_cstate->sslbis.sslbe[0].reserved = 0; + /* Set the SSLBE entry */ + cxl_cstate->sslbis.sslbe[1].port_x_id = 1; + cxl_cstate->sslbis.sslbe[1].port_y_id = 1; + cxl_cstate->sslbis.sslbe[1].latency_bandwidth = 0; + cxl_cstate->sslbis.sslbe[1].reserved = 0; + /* Set the SSLBE entry */ + cxl_cstate->sslbis.sslbe[2].port_x_id = 2; + cxl_cstate->sslbis.sslbe[2].port_y_id = 2; + cxl_cstate->sslbis.sslbe[2].latency_bandwidth = 0; + cxl_cstate->sslbis.sslbe[2].reserved = 0; + + /* Set CDAT header, ent = 0 */ + cxl_cstate->cdat_header.revision = CXL_CDAT_REV; + cxl_cstate->cdat_header.reserved[0] = 0; + cxl_cstate->cdat_header.reserved[1] = 0; + cxl_cstate->cdat_header.reserved[2] = 0; + cxl_cstate->cdat_header.reserved[3] = 0; + cxl_cstate->cdat_header.reserved[4] = 0; + cxl_cstate->cdat_header.reserved[5] = 0; + cxl_cstate->cdat_header.sequence = 0; + + for (i = cxl_cstate->cdat_ent_len - 1; i >= 0; i--) { + /* Add length of each CDAT struct to total length */ + len = cxl_cstate->cdat_ent[i].length; + cxl_cstate->cdat_header.length += len; + + /* Calculate checksum of each CDAT struct */ + for (j = 0; j < len; j++) { + sum += *(uint8_t *)(cxl_cstate->cdat_ent[i].base + j); + } + } + cxl_cstate->cdat_header.checksum = ~sum + 1; +} diff --git a/hw/mem/cxl_type3.c b/hw/mem/cxl_type3.c index d091e64..86c762f 100644 --- a/hw/mem/cxl_type3.c +++ b/hw/mem/cxl_type3.c @@ -13,6 +13,150 @@ #include "qemu/rcu.h" #include "sysemu/hostmem.h" #include "hw/cxl/cxl.h" +#include "hw/pci/msi.h" +#include "hw/pci/msix.h" + +uint32_t cxl_doe_compliance_init(DOECap *doe_cap) +{ + CXLComponentState *cxl_cstate = &CT3(doe_cap->doe->pdev)->cxl_cstate; + uint32_t req; + uint32_t byte_cnt = 0; + + DOE_DBG(">> %s\n", __func__); + + req = ((struct cxl_compliance_mode_cap *)pcie_doe_get_req(doe_cap)) + ->req_code; + switch (req) { + case CXL_COMP_MODE_CAP: + byte_cnt = sizeof(struct cxl_compliance_mode_cap_rsp); + cxl_cstate->doe_resp.cap_rsp.header.vendor_id = CXL_VENDOR_ID; + cxl_cstate->doe_resp.cap_rsp.header.doe_type = CXL_DOE_COMPLIANCE; + cxl_cstate->doe_resp.cap_rsp.header.reserved = 0x0; + cxl_cstate->doe_resp.cap_rsp.header.length = + dwsizeof(struct cxl_compliance_mode_cap_rsp); + cxl_cstate->doe_resp.cap_rsp.rsp_code = 0x0; + cxl_cstate->doe_resp.cap_rsp.version = 0x1; + cxl_cstate->doe_resp.cap_rsp.length = 0x1c; + cxl_cstate->doe_resp.cap_rsp.status = 0x0; + cxl_cstate->doe_resp.cap_rsp.available_cap_bitmask = 0x3; + cxl_cstate->doe_resp.cap_rsp.enabled_cap_bitmask = 0x3; + break; + case CXL_COMP_MODE_STATUS: + byte_cnt = sizeof(struct cxl_compliance_mode_status_rsp); + cxl_cstate->doe_resp.status_rsp.header.vendor_id = CXL_VENDOR_ID; + cxl_cstate->doe_resp.status_rsp.header.doe_type = CXL_DOE_COMPLIANCE; + cxl_cstate->doe_resp.status_rsp.header.reserved = 0x0; + cxl_cstate->doe_resp.status_rsp.header.length = + dwsizeof(struct cxl_compliance_mode_status_rsp); + cxl_cstate->doe_resp.status_rsp.rsp_code = 0x1; + cxl_cstate->doe_resp.status_rsp.version = 0x1; + cxl_cstate->doe_resp.status_rsp.length = 0x14; + cxl_cstate->doe_resp.status_rsp.cap_bitfield = 0x3; + cxl_cstate->doe_resp.status_rsp.cache_size = 0; + cxl_cstate->doe_resp.status_rsp.cache_size_units = 0; + break; + default: + break; + } + + DOE_DBG(" REQ=%x, RSP BYTE_CNT=%d\n", req, byte_cnt); + DOE_DBG("<< %s\n", __func__); + return byte_cnt; +} + + +bool cxl_doe_compliance_rsp(DOECap *doe_cap) +{ + CXLComponentState *cxl_cstate = &CT3(doe_cap->doe->pdev)->cxl_cstate; + uint32_t byte_cnt; + uint32_t dw_cnt; + + DOE_DBG(">> %s\n", __func__); + + byte_cnt = cxl_doe_compliance_init(doe_cap); + dw_cnt = byte_cnt / 4; + memcpy(doe_cap->read_mbox, + cxl_cstate->doe_resp.data_byte, byte_cnt); + + doe_cap->read_mbox_len += dw_cnt; + + DOE_DBG(" LEN=%x, RD MBOX[%d]=%x\n", dw_cnt - 1, + doe_cap->read_mbox_len, + *(doe_cap->read_mbox + dw_cnt - 1)); + + DOE_DBG("<< %s\n", __func__); + + return DOE_SUCCESS; +} + +bool cxl_doe_cdat_rsp(DOECap *doe_cap) +{ + CXLComponentState *cxl_cstate = &CT3(doe_cap->doe->pdev)->cxl_cstate; + uint16_t ent; + void *base; + uint32_t len; + struct cxl_cdat *req = pcie_doe_get_req(doe_cap); + + ent = req->entry_handle; + base = cxl_cstate->cdat_ent[ent].base; + len = cxl_cstate->cdat_ent[ent].length; + + struct cxl_cdat_rsp rsp = { + .header = { + .vendor_id = CXL_VENDOR_ID, + .doe_type = CXL_DOE_TABLE_ACCESS, + .reserved = 0x0, + .length = (sizeof(struct cxl_cdat_rsp) + len) / 4, + }, + .req_code = CXL_DOE_TAB_RSP, + .table_type = CXL_DOE_TAB_TYPE_CDAT, + .entry_handle = (++ent < cxl_cstate->cdat_ent_len) ? ent : CXL_DOE_TAB_ENT_MAX, + }; + + memcpy(doe_cap->read_mbox, &rsp, sizeof(rsp)); + memcpy(doe_cap->read_mbox + sizeof(rsp) / 4, base, len); + + doe_cap->read_mbox_len += rsp.header.length; + DOE_DBG(" read_mbox_len=%x\n", doe_cap->read_mbox_len); + + for (int i = 0; i < doe_cap->read_mbox_len; i++) { + DOE_DBG(" RD MBOX[%d]=%08x\n", i, doe_cap->read_mbox[i]); + } + + return DOE_SUCCESS; +} + +static uint32_t ct3d_config_read(PCIDevice *pci_dev, + uint32_t addr, int size) +{ + CXLType3Dev *ct3d = CT3(pci_dev); + PCIEDOE *doe = &ct3d->doe; + DOECap *doe_cap; + + doe_cap = pcie_doe_covers_addr(doe, addr); + if (doe_cap) { + DOE_DBG(">> %s addr=%x, size=%x\n", __func__, addr, size); + return pcie_doe_read_config(doe_cap, addr, size); + } else { + return pci_default_read_config(pci_dev, addr, size); + } +} + +static void ct3d_config_write(PCIDevice *pci_dev, + uint32_t addr, uint32_t val, int size) +{ + CXLType3Dev *ct3d = CT3(pci_dev); + PCIEDOE *doe = &ct3d->doe; + DOECap *doe_cap; + + doe_cap = pcie_doe_covers_addr(doe, addr); + if (doe_cap) { + DOE_DBG(">> %s addr=%x, val=%x, size=%x\n", __func__, addr, val, size); + pcie_doe_write_config(doe_cap, addr, val, size); + } else { + pci_default_write_config(pci_dev, addr, val, size); + } +} static void build_dvsecs(CXLType3Dev *ct3d) { @@ -210,6 +354,9 @@ static void ct3_realize(PCIDevice *pci_dev, Error **errp) ComponentRegisters *regs = &cxl_cstate->crb; MemoryRegion *mr = ®s->component_registers; uint8_t *pci_conf = pci_dev->config; + unsigned short msix_num = 2; + int rc; + int i; if (!ct3d->cxl_dstate.pmem) { cxl_setup_memory(ct3d, errp); @@ -239,6 +386,28 @@ static void ct3_realize(PCIDevice *pci_dev, Error **errp) PCI_BASE_ADDRESS_SPACE_MEMORY | PCI_BASE_ADDRESS_MEM_TYPE_64, &ct3d->cxl_dstate.device_registers); + + msix_init_exclusive_bar(pci_dev, msix_num, 4, NULL); + for (i = 0; i < msix_num; i++) { + msix_vector_use(pci_dev, i); + } + + /* msi_init(pci_dev, 0x60, 16, true, false, NULL); */ + + pcie_doe_init(pci_dev, &ct3d->doe); + rc = pcie_cap_doe_add(&ct3d->doe, 0x160, true, 0); + rc = pcie_cap_doe_add(&ct3d->doe, 0x190, true, 1); + if (rc) { + error_setg(errp, "fail to add DOE cap"); + return; + } + + pcie_doe_register_protocol(&ct3d->doe, CXL_VENDOR_ID, CXL_DOE_COMPLIANCE, + cxl_doe_compliance_rsp); + pcie_doe_register_protocol(&ct3d->doe, CXL_VENDOR_ID, CXL_DOE_TABLE_ACCESS, + cxl_doe_cdat_rsp); + + cxl_doe_cdat_init(cxl_cstate); } static uint64_t cxl_md_get_addr(const MemoryDeviceState *md) @@ -357,6 +526,9 @@ static void ct3_class_init(ObjectClass *oc, void *data) DeviceClass *dc = DEVICE_CLASS(oc); PCIDeviceClass *pc = PCI_DEVICE_CLASS(oc); MemoryDeviceClass *mdc = MEMORY_DEVICE_CLASS(oc); + + pc->config_write = ct3d_config_write; + pc->config_read = ct3d_config_read; CXLType3Class *cvc = CXL_TYPE3_DEV_CLASS(oc); pc->realize = ct3_realize; diff --git a/include/hw/cxl/cxl_cdat.h b/include/hw/cxl/cxl_cdat.h new file mode 100644 index 0000000..fbbd494 --- /dev/null +++ b/include/hw/cxl/cxl_cdat.h @@ -0,0 +1,120 @@ +#include "hw/cxl/cxl_pci.h" + + +enum { + CXL_DOE_COMPLIANCE = 0, + CXL_DOE_TABLE_ACCESS = 2, + CXL_DOE_MAX_PROTOCOL +}; + +#define CXL_DOE_PROTOCOL_COMPLIANCE ((CXL_DOE_COMPLIANCE << 16) | CXL_VENDOR_ID) +#define CXL_DOE_PROTOCOL_CDAT ((CXL_DOE_TABLE_ACCESS << 16) | CXL_VENDOR_ID) + +/* + * DOE CDAT Table Protocol (CXL Spec) + */ +#define CXL_DOE_TAB_REQ 0 +#define CXL_DOE_TAB_RSP 0 +#define CXL_DOE_TAB_TYPE_CDAT 0 +#define CXL_DOE_TAB_ENT_MAX 0xFFFF + +/* Read Entry Request, 8.1.11.1 Table 134 */ +struct cxl_cdat { + DOEHeader header; + uint8_t req_code; + uint8_t table_type; + uint16_t entry_handle; +} QEMU_PACKED; + +/* Read Entry Response, 8.1.11.1 Table 135 */ +#define cxl_cdat_rsp cxl_cdat /* Same as request */ + +/* + * CDAT Table Structure (CDAT Spec) + */ +#define CXL_CDAT_REV 1 + +/* Data object header */ +struct cdat_table_header { + uint32_t length; /* Length of table in bytes, including this header */ + uint8_t revision; /* ACPI Specification minor version number */ + uint8_t checksum; /* To make sum of entire table == 0 */ + uint8_t reserved[6]; + uint32_t sequence; /* ASCII table signature */ +} QEMU_PACKED; + +/* Values for subtable type in CDAT structures */ +enum cdat_type { + CDAT_TYPE_DSMAS = 0, + CDAT_TYPE_DSLBIS = 1, + CDAT_TYPE_DSMSCIS = 2, + CDAT_TYPE_DSIS = 3, + CDAT_TYPE_DSEMTS = 4, + CDAT_TYPE_SSLBIS = 5, + CDAT_TYPE_MAX +}; + +struct cdat_sub_header { + uint8_t type; + uint8_t reserved; + uint16_t length; +}; + +/* CDAT Structure Subtables */ +struct cdat_dsmas { + struct cdat_sub_header header; + uint8_t DSMADhandle; + uint8_t flags; + uint16_t reserved2; + uint64_t DPA_base; + uint64_t DPA_length; +} QEMU_PACKED; + +struct cdat_dslbis { + struct cdat_sub_header header; + uint8_t handle; + uint8_t flags; + uint8_t data_type; + uint8_t reserved2; + uint64_t entry_base_unit; + uint16_t entry[3]; + uint16_t reserved3; +} QEMU_PACKED; + +struct cdat_dsmscis { + struct cdat_sub_header header; + uint8_t DSMASH_handle; + uint8_t reserved2[3]; + uint64_t memory_side_cache_size; + uint32_t cache_attributes; +} QEMU_PACKED; + +struct cdat_dsis { + struct cdat_sub_header header; + uint8_t flags; + uint8_t handle; + uint16_t reserved2; +} QEMU_PACKED; + +struct cdat_dsemts { + struct cdat_sub_header header; + uint8_t DSMAS_handle; + uint8_t EFI_memory_type_attr; + uint16_t reserved2; + uint64_t DPA_offset; + uint64_t DPA_length; +} QEMU_PACKED; + +struct cdat_sslbe { + uint16_t port_x_id; + uint16_t port_y_id; + uint16_t latency_bandwidth; + uint16_t reserved; +} QEMU_PACKED; + +struct cdat_sslbis_header { + struct cdat_sub_header header; + uint8_t data_type; + uint8_t reserved2[3]; + uint64_t entry_base_unit; +} QEMU_PACKED; diff --git a/include/hw/cxl/cxl_compl.h b/include/hw/cxl/cxl_compl.h new file mode 100644 index 0000000..ebbe488 --- /dev/null +++ b/include/hw/cxl/cxl_compl.h @@ -0,0 +1,289 @@ +/* + * CXL Compliance Mode Protocol + */ +struct cxl_compliance_mode_cap { + DOEHeader header; + uint8_t req_code; + uint8_t version; + uint16_t reserved; +} QEMU_PACKED; + +struct cxl_compliance_mode_cap_rsp { + DOEHeader header; + uint8_t rsp_code; + uint8_t version; + uint8_t length; + uint8_t status; + uint64_t available_cap_bitmask; + uint64_t enabled_cap_bitmask; +} QEMU_PACKED; + +struct cxl_compliance_mode_status { + DOEHeader header; + uint8_t req_code; + uint8_t version; + uint16_t reserved; +} QEMU_PACKED; + +struct cxl_compliance_mode_status_rsp { + DOEHeader header; + uint8_t rsp_code; + uint8_t version; + uint8_t length; + uint32_t cap_bitfield; + uint16_t cache_size; + uint8_t cache_size_units; +} QEMU_PACKED; + +struct cxl_compliance_mode_halt { + DOEHeader header; + uint8_t req_code; + uint8_t version; + uint16_t reserved; +} QEMU_PACKED; + +struct cxl_compliance_mode_halt_rsp { + DOEHeader header; + uint8_t rsp_code; + uint8_t version; + uint8_t length; + uint8_t status; +} QEMU_PACKED; + +struct cxl_compliance_mode_multiple_write_streaming { + DOEHeader header; + uint8_t req_code; + uint8_t version; + uint16_t reserved; + uint8_t protocol; + uint8_t virtual_addr; + uint8_t self_checking; + uint8_t verify_read_semantics; + uint8_t num_inc; + uint8_t num_sets; + uint8_t num_loops; + uint8_t reserved2; + uint64_t start_addr; + uint64_t write_addr; + uint64_t writeback_addr; + uint64_t byte_mask; + uint32_t addr_incr; + uint32_t set_offset; + uint32_t pattern_p; + uint32_t inc_pattern_b; +} QEMU_PACKED; + +struct cxl_compliance_mode_multiple_write_streaming_rsp { + DOEHeader header; + uint8_t rsp_code; + uint8_t version; + uint8_t length; + uint8_t status; +} QEMU_PACKED; + +struct cxl_compliance_mode_producer_consumer { + DOEHeader header; + uint8_t req_code; + uint8_t version; + uint16_t reserved; + uint8_t protocol; + uint8_t num_inc; + uint8_t num_sets; + uint8_t num_loops; + uint8_t write_semantics; + char reserved2[3]; + uint64_t start_addr; + uint64_t byte_mask; + uint32_t addr_incr; + uint32_t set_offset; + uint32_t pattern; +} QEMU_PACKED; + +struct cxl_compliance_mode_producer_consumer_rsp { + DOEHeader header; + uint8_t rsp_code; + uint8_t version; + uint8_t length; + uint8_t status; +} QEMU_PACKED; + +struct cxl_compliance_mode_inject_bogus_writes { + DOEHeader header; + uint8_t req_code; + uint8_t version; + uint16_t reserved; + uint8_t count; + uint8_t reserved2; + uint32_t pattern; +} QEMU_PACKED; + +struct cxl_compliance_mode_inject_bogus_writes_rsp { + DOEHeader header; + uint8_t rsp_code; + uint8_t version; + uint8_t length; + uint8_t status; +} QEMU_PACKED; + +struct cxl_compliance_mode_inject_poison { + DOEHeader header; + uint8_t req_code; + uint8_t version; + uint16_t reserved; + uint8_t protocol; +} QEMU_PACKED; + +struct cxl_compliance_mode_inject_poison_rsp { + DOEHeader header; + uint8_t rsp_code; + uint8_t version; + uint8_t length; + uint8_t status; +} QEMU_PACKED; + +struct cxl_compliance_mode_inject_crc { + DOEHeader header; + uint8_t req_code; + uint8_t version; + uint16_t reserved; + uint8_t num_bits_flip; + uint8_t num_flits_inj; +} QEMU_PACKED; + +struct cxl_compliance_mode_inject_crc_rsp { + DOEHeader header; + uint8_t rsp_code; + uint8_t version; + uint8_t length; + uint8_t status; +} QEMU_PACKED; + +struct cxl_compliance_mode_inject_flow_control { + DOEHeader header; + uint8_t req_code; + uint8_t version; + uint16_t reserved; + uint8_t inj_flow_control; +} QEMU_PACKED; + +struct cxl_compliance_mode_inject_flow_control_rsp { + DOEHeader header; + uint8_t rsp_code; + uint8_t version; + uint8_t length; + uint8_t status; +} QEMU_PACKED; + +struct cxl_compliance_mode_toggle_cache_flush { + DOEHeader header; + uint8_t req_code; + uint8_t version; + uint16_t reserved; + uint8_t inj_flow_control; +} QEMU_PACKED; + +struct cxl_compliance_mode_toggle_cache_flush_rsp { + DOEHeader header; + uint8_t rsp_code; + uint8_t version; + uint8_t length; + uint8_t status; +} QEMU_PACKED; + +struct cxl_compliance_mode_inject_mac_delay { + DOEHeader header; + uint8_t req_code; + uint8_t version; + uint16_t reserved; + uint8_t enable; + uint8_t mode; + uint8_t delay; +} QEMU_PACKED; + +struct cxl_compliance_mode_inject_mac_delay_rsp { + DOEHeader header; + uint8_t rsp_code; + uint8_t version; + uint8_t length; + uint8_t status; +} QEMU_PACKED; + +struct cxl_compliance_mode_insert_unexp_mac { + DOEHeader header; + uint8_t req_code; + uint8_t version; + uint16_t reserved; + uint8_t opcode; + uint8_t mode; +} QEMU_PACKED; + +struct cxl_compliance_mode_insert_unexp_mac_rsp { + DOEHeader header; + uint8_t rsp_code; + uint8_t version; + uint8_t length; + uint8_t status; +} QEMU_PACKED; + +struct cxl_compliance_mode_inject_viral { + DOEHeader header; + uint8_t req_code; + uint8_t version; + uint16_t reserved; + uint8_t protocol; +} QEMU_PACKED; + +struct cxl_compliance_mode_inject_viral_rsp { + DOEHeader header; + uint8_t rsp_code; + uint8_t version; + uint8_t length; + uint8_t status; +} QEMU_PACKED; + +struct cxl_compliance_mode_inject_almp { + DOEHeader header; + uint8_t req_code; + uint8_t version; + uint16_t reserved; + uint8_t opcode; + char reserved2[3]; +} QEMU_PACKED; + +struct cxl_compliance_mode_inject_almp_rsp { + DOEHeader header; + uint8_t rsp_code; + uint8_t version; + uint8_t reserved[6]; +} QEMU_PACKED; + +struct cxl_compliance_mode_ignore_almp { + DOEHeader header; + uint8_t req_code; + uint8_t version; + uint16_t reserved; + uint8_t opcode; + uint8_t reserved2[3]; +} QEMU_PACKED; + +struct cxl_compliance_mode_ignore_almp_rsp { + DOEHeader header; + uint8_t rsp_code; + uint8_t version; + uint8_t reserved[6]; +} QEMU_PACKED; + +struct cxl_compliance_mode_ignore_bit_error { + DOEHeader header; + uint8_t req_code; + uint8_t version; + uint16_t reserved; + uint8_t opcode; +} QEMU_PACKED; + +struct cxl_compliance_mode_ignore_bit_error_rsp { + DOEHeader header; + uint8_t rsp_code; + uint8_t version; + uint8_t reserved[6]; +} QEMU_PACKED; diff --git a/include/hw/cxl/cxl_component.h b/include/hw/cxl/cxl_component.h index 762feb5..23923df 100644 --- a/include/hw/cxl/cxl_component.h +++ b/include/hw/cxl/cxl_component.h @@ -132,6 +132,23 @@ HDM_DECODER_INIT(0); _Static_assert((CXL_SNOOP_REGISTERS_OFFSET + CXL_SNOOP_REGISTERS_SIZE) < 0x1000, "No space for registers"); +/* 14.16.4 - Compliance Mode */ +#define CXL_COMP_MODE_CAP 0x0 +#define CXL_COMP_MODE_STATUS 0x1 +#define CXL_COMP_MODE_HALT 0x2 +#define CXL_COMP_MODE_MULT_WR_STREAM 0x3 +#define CXL_COMP_MODE_PRO_CON 0x4 +#define CXL_COMP_MODE_BOGUS 0x5 +#define CXL_COMP_MODE_INJ_POISON 0x6 +#define CXL_COMP_MODE_INJ_CRC 0x7 +#define CXL_COMP_MODE_INJ_FC 0x8 +#define CXL_COMP_MODE_TOGGLE_CACHE 0x9 +#define CXL_COMP_MODE_INJ_MAC 0xa +#define CXL_COMP_MODE_INS_UNEXP_MAC 0xb +#define CXL_COMP_MODE_INJ_VIRAL 0xc +#define CXL_COMP_MODE_INJ_ALMP 0xd +#define CXL_COMP_MODE_IGN_ALMP 0xe + typedef struct component_registers { /* * Main memory region to be registered with QEMU core. @@ -160,6 +177,10 @@ typedef struct component_registers { MemoryRegionOps *special_ops; } ComponentRegisters; +typedef struct cdat_struct { + void *base; + uint32_t length; +} CDATStruct; /* * A CXL component represents all entities in a CXL hierarchy. This includes, * host bridges, root ports, upstream/downstream switch ports, and devices @@ -173,6 +194,104 @@ typedef struct cxl_component { struct PCIDevice *pdev; }; }; + + /* + * SW write write mailbox and GO on last DW + * device sets READY of offset DW in DO types to copy + * to read mailbox register on subsequent cfg_read + * of read mailbox register and then on cfg_write to + * denote success read increments offset to next DW + */ + + union doe_request_u { + /* Compliance DOE Data Objects Type=0*/ + struct cxl_compliance_mode_cap + mode_cap; + struct cxl_compliance_mode_status + mode_status; + struct cxl_compliance_mode_halt + mode_halt; + struct cxl_compliance_mode_multiple_write_streaming + multiple_write_streaming; + struct cxl_compliance_mode_producer_consumer + producer_consumer; + struct cxl_compliance_mode_inject_bogus_writes + inject_bogus_writes; + struct cxl_compliance_mode_inject_poison + inject_poison; + struct cxl_compliance_mode_inject_crc + inject_crc; + struct cxl_compliance_mode_inject_flow_control + inject_flow_control; + struct cxl_compliance_mode_toggle_cache_flush + toggle_cache_flush; + struct cxl_compliance_mode_inject_mac_delay + inject_mac_delay; + struct cxl_compliance_mode_insert_unexp_mac + insert_unexp_mac; + struct cxl_compliance_mode_inject_viral + inject_viral; + struct cxl_compliance_mode_inject_almp + inject_almp; + struct cxl_compliance_mode_ignore_almp + ignore_almp; + struct cxl_compliance_mode_ignore_bit_error + ignore_bit_error; + char data_byte[128]; + } doe_request; + + union doe_resp_u { + /* Compliance DOE Data Objects Type=0*/ + struct cxl_compliance_mode_cap_rsp + cap_rsp; + struct cxl_compliance_mode_status_rsp + status_rsp; + struct cxl_compliance_mode_halt_rsp + halt_rsp; + struct cxl_compliance_mode_multiple_write_streaming_rsp + multiple_write_streaming_rsp; + struct cxl_compliance_mode_producer_consumer_rsp + producer_consumer_rsp; + struct cxl_compliance_mode_inject_bogus_writes_rsp + inject_bogus_writes_rsp; + struct cxl_compliance_mode_inject_poison_rsp + inject_poison_rsp; + struct cxl_compliance_mode_inject_crc_rsp + inject_crc_rsp; + struct cxl_compliance_mode_inject_flow_control_rsp + inject_flow_control_rsp; + struct cxl_compliance_mode_toggle_cache_flush_rsp + toggle_cache_flush_rsp; + struct cxl_compliance_mode_inject_mac_delay_rsp + inject_mac_delay_rsp; + struct cxl_compliance_mode_insert_unexp_mac_rsp + insert_unexp_mac_rsp; + struct cxl_compliance_mode_inject_viral + inject_viral_rsp; + struct cxl_compliance_mode_inject_almp_rsp + inject_almp_rsp; + struct cxl_compliance_mode_ignore_almp_rsp + ignore_almp_rsp; + struct cxl_compliance_mode_ignore_bit_error_rsp + ignore_bit_error_rsp; + char data_byte[520 * 4]; + uint32_t data_dword[520]; + } doe_resp; + + /* Table entry types */ + struct cdat_table_header cdat_header; + struct cdat_dsmas dsmas; + struct cdat_dslbis dslbis; + struct cdat_dsmscis dsmscis; + struct cdat_dsis dsis; + struct cdat_dsemts dsemts; + struct { + struct cdat_sslbis_header sslbis_h; + struct cdat_sslbe sslbe[3]; + } sslbis; + + CDATStruct *cdat_ent; + int cdat_ent_len; } CXLComponentState; void cxl_component_register_block_init(Object *obj, @@ -184,4 +303,11 @@ void cxl_component_register_init_common(uint32_t *reg_state, void cxl_component_create_dvsec(CXLComponentState *cxl_cstate, uint16_t length, uint16_t type, uint8_t rev, uint8_t *body); +void cxl_component_create_doe(CXLComponentState *cxl_cstate, + uint16_t offset, unsigned vec); +uint32_t cxl_doe_compliance_init(DOECap *doe_cap); +bool cxl_doe_compliance_rsp(DOECap *doe_cap); +void cxl_doe_cdat_init(CXLComponentState *cxl_cstate); +bool cxl_doe_cdat_rsp(DOECap *doe_cap); +uint32_t cdat_zero_checksum(uint32_t *mbox, uint32_t dw_cnt); #endif diff --git a/include/hw/cxl/cxl_device.h b/include/hw/cxl/cxl_device.h index c608ced..08bf646 100644 --- a/include/hw/cxl/cxl_device.h +++ b/include/hw/cxl/cxl_device.h @@ -223,6 +223,9 @@ typedef struct cxl_type3_dev { /* State */ CXLComponentState cxl_cstate; CXLDeviceState cxl_dstate; + + /* DOE */ + PCIEDOE doe; } CXLType3Dev; #ifndef TYPE_CXL_TYPE3_DEV diff --git a/include/hw/cxl/cxl_pci.h b/include/hw/cxl/cxl_pci.h index 9ec28c9..5cab197 100644 --- a/include/hw/cxl/cxl_pci.h +++ b/include/hw/cxl/cxl_pci.h @@ -12,6 +12,8 @@ #include "hw/pci/pci.h" #include "hw/pci/pcie.h" +#include "hw/cxl/cxl_cdat.h" +#include "hw/cxl/cxl_compl.h" #define CXL_VENDOR_ID 0x1e98 @@ -54,6 +56,8 @@ struct dvsec_header { _Static_assert(sizeof(struct dvsec_header) == 10, "dvsec header size incorrect"); +/* CXL 2.0 - 8.1.11 */ + /* * CXL 2.0 devices must implement certain DVSEC IDs, and can [optionally] * implement others.