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Thu, 12 Dec 2019 20:25:11 +0000 (GMT) Received: from b01ledav006.gho.pok.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 66DCAAC062; Thu, 12 Dec 2019 20:25:11 +0000 (GMT) Received: from sbct-3.pok.ibm.com (unknown [9.47.158.153]) by b01ledav006.gho.pok.ibm.com (Postfix) with ESMTP; Thu, 12 Dec 2019 20:25:11 +0000 (GMT) From: Stefan Berger To: qemu-ppc@nongnu.org Subject: [PATCH v5 1/5] tpm_spapr: Support TPM for ppc64 using CRQ based interface Date: Thu, 12 Dec 2019 15:24:26 -0500 Message-Id: <20191212202430.1079725-2-stefanb@linux.vnet.ibm.com> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20191212202430.1079725-1-stefanb@linux.vnet.ibm.com> References: <20191212202430.1079725-1-stefanb@linux.vnet.ibm.com> MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.95, 18.0.572 definitions=2019-12-12_06:2019-12-12, 2019-12-12 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 clxscore=1015 impostorscore=0 lowpriorityscore=0 priorityscore=1501 mlxscore=0 phishscore=0 malwarescore=0 suspectscore=4 adultscore=0 mlxlogscore=999 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-1910280000 definitions=main-1912120157 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x [generic] [fuzzy] X-Received-From: 148.163.158.5 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: marcandre.lureau@redhat.com, Stefan Berger , qemu-devel@nongnu.org, david@gibson.dropbear.id.au Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" Implement support for TPM on ppc64 by implementing the vTPM CRQ interface as a frontend. It can use the tpm_emulator driver backend with the external swtpm. The Linux vTPM driver for ppc64 works with this emulation. This TPM emulator also handles the TPM 2 case. Signed-off-by: Stefan Berger Reviewed-by: David Gibson diff --git a/hw/tpm/Kconfig b/hw/tpm/Kconfig index 4c8ee87d67..66a570aac1 100644 --- a/hw/tpm/Kconfig +++ b/hw/tpm/Kconfig @@ -22,3 +22,9 @@ config TPM_EMULATOR bool default y depends on TPMDEV + +config TPM_SPAPR + bool + default n + select TPMDEV + depends on PSERIES diff --git a/hw/tpm/Makefile.objs b/hw/tpm/Makefile.objs index de0b85d02a..85eb99ae05 100644 --- a/hw/tpm/Makefile.objs +++ b/hw/tpm/Makefile.objs @@ -4,3 +4,4 @@ common-obj-$(CONFIG_TPM_TIS) += tpm_tis.o common-obj-$(CONFIG_TPM_CRB) += tpm_crb.o common-obj-$(CONFIG_TPM_PASSTHROUGH) += tpm_passthrough.o common-obj-$(CONFIG_TPM_EMULATOR) += tpm_emulator.o +obj-$(CONFIG_TPM_SPAPR) += tpm_spapr.o diff --git a/hw/tpm/tpm_spapr.c b/hw/tpm/tpm_spapr.c new file mode 100644 index 0000000000..c4a67e2403 --- /dev/null +++ b/hw/tpm/tpm_spapr.c @@ -0,0 +1,405 @@ +/* + * QEMU PowerPC pSeries Logical Partition (aka sPAPR) hardware System Emulator + * + * PAPR Virtual TPM + * + * Copyright (c) 2015, 2017 IBM Corporation. + * + * Authors: + * Stefan Berger + * + * This code is licensed under the GPL version 2 or later. See the + * COPYING file in the top-level directory. + * + */ + +#include "qemu/osdep.h" +#include "qemu/error-report.h" +#include "qapi/error.h" +#include "hw/qdev-properties.h" +#include "migration/vmstate.h" + +#include "sysemu/tpm_backend.h" +#include "tpm_int.h" +#include "tpm_util.h" + +#include "hw/ppc/spapr.h" +#include "hw/ppc/spapr_vio.h" +#include "trace.h" + +#define DEBUG_SPAPR 0 + +#define VIO_SPAPR_VTPM(obj) \ + OBJECT_CHECK(SPAPRvTPMState, (obj), TYPE_TPM_SPAPR) + +typedef struct VioCRQ { + uint8_t valid; /* 0x80: cmd; 0xc0: init crq */ + /* 0x81-0x83: CRQ message response */ + uint8_t msg; /* see below */ + uint16_t len; /* len of TPM request; len of TPM response */ + uint32_t data; /* rtce_dma_handle when sending TPM request */ + uint64_t reserved; +} VioCRQ; + +typedef union TPMSpaprCRQ { + VioCRQ s; + uint8_t raw[sizeof(VioCRQ)]; +} TPMSpaprCRQ; + +#define SPAPR_VTPM_VALID_INIT_CRQ_COMMAND 0xC0 +#define SPAPR_VTPM_VALID_COMMAND 0x80 +#define SPAPR_VTPM_MSG_RESULT 0x80 + +/* msg types for valid = SPAPR_VTPM_VALID_INIT_CRQ */ +#define SPAPR_VTPM_INIT_CRQ_RESULT 0x1 +#define SPAPR_VTPM_INIT_CRQ_COMPLETE_RESULT 0x2 + +/* msg types for valid = SPAPR_VTPM_VALID_CMD */ +#define SPAPR_VTPM_GET_VERSION 0x1 +#define SPAPR_VTPM_TPM_COMMAND 0x2 +#define SPAPR_VTPM_GET_RTCE_BUFFER_SIZE 0x3 +#define SPAPR_VTPM_PREPARE_TO_SUSPEND 0x4 + +/* response error messages */ +#define SPAPR_VTPM_VTPM_ERROR 0xff + +/* error codes */ +#define SPAPR_VTPM_ERR_COPY_IN_FAILED 0x3 +#define SPAPR_VTPM_ERR_COPY_OUT_FAILED 0x4 + +#define MAX_BUFFER_SIZE TARGET_PAGE_SIZE + +typedef struct { + SpaprVioDevice vdev; + + TPMSpaprCRQ crq; /* track single TPM command */ + + uint8_t state; +#define SPAPR_VTPM_STATE_NONE 0 +#define SPAPR_VTPM_STATE_EXECUTION 1 +#define SPAPR_VTPM_STATE_COMPLETION 2 + + unsigned char buffer[MAX_BUFFER_SIZE]; + + TPMBackendCmd cmd; + + TPMBackend *be_driver; + TPMVersion be_tpm_version; + + size_t be_buffer_size; +} SPAPRvTPMState; + +static void tpm_spapr_show_buffer(const unsigned char *buffer, + size_t buffer_size, const char *string) +{ + size_t len, i; + char *line_buffer, *p; + + len = MIN(tpm_cmd_get_size(buffer), buffer_size); + + /* + * allocate enough room for 3 chars per buffer entry plus a + * newline after every 16 chars and a final null terminator. + */ + line_buffer = g_malloc(len * 3 + (len / 16) + 1); + + for (i = 0, p = line_buffer; i < len; i++) { + if (i && !(i % 16)) { + p += sprintf(p, "\n"); + } + p += sprintf(p, "%.2X ", buffer[i]); + } + trace_tpm_spapr_show_buffer(string, len, line_buffer); + + g_free(line_buffer); +} + +/* + * Send a request to the TPM. + */ +static void tpm_spapr_tpm_send(SPAPRvTPMState *s) +{ + if (trace_event_get_state_backends(TRACE_TPM_SPAPR_SHOW_BUFFER)) { + tpm_spapr_show_buffer(s->buffer, sizeof(s->buffer), "To TPM"); + } + + s->state = SPAPR_VTPM_STATE_EXECUTION; + s->cmd = (TPMBackendCmd) { + .locty = 0, + .in = s->buffer, + .in_len = MIN(tpm_cmd_get_size(s->buffer), sizeof(s->buffer)), + .out = s->buffer, + .out_len = sizeof(s->buffer), + }; + + tpm_backend_deliver_request(s->be_driver, &s->cmd); +} + +static int tpm_spapr_process_cmd(SPAPRvTPMState *s, uint64_t dataptr) +{ + long rc; + + /* a max. of be_buffer_size bytes can be transported */ + rc = spapr_vio_dma_read(&s->vdev, dataptr, + s->buffer, s->be_buffer_size); + if (rc) { + error_report("tpm_spapr_got_payload: DMA read failure"); + } + /* let vTPM handle any malformed request */ + tpm_spapr_tpm_send(s); + + return rc; +} + +static int tpm_spapr_do_crq(struct SpaprVioDevice *dev, uint8_t *crq_data) +{ + SPAPRvTPMState *s = VIO_SPAPR_VTPM(dev); + TPMSpaprCRQ local_crq; + TPMSpaprCRQ *crq = &s->crq; /* requests only */ + int rc; + + memcpy(&local_crq.raw, crq_data, sizeof(local_crq.raw)); + + trace_tpm_spapr_do_crq(local_crq.raw[0], local_crq.raw[1]); + + switch (local_crq.s.valid) { + case SPAPR_VTPM_VALID_INIT_CRQ_COMMAND: /* Init command/response */ + + /* Respond to initialization request */ + switch (local_crq.s.msg) { + case SPAPR_VTPM_INIT_CRQ_RESULT: + trace_tpm_spapr_do_crq_crq_result(); + memset(local_crq.raw, 0, sizeof(local_crq.raw)); + local_crq.s.valid = SPAPR_VTPM_VALID_INIT_CRQ_COMMAND; + local_crq.s.msg = SPAPR_VTPM_INIT_CRQ_RESULT; + spapr_vio_send_crq(dev, local_crq.raw); + break; + + case SPAPR_VTPM_INIT_CRQ_COMPLETE_RESULT: + trace_tpm_spapr_do_crq_crq_complete_result(); + memset(local_crq.raw, 0, sizeof(local_crq.raw)); + local_crq.s.valid = SPAPR_VTPM_VALID_INIT_CRQ_COMMAND; + local_crq.s.msg = SPAPR_VTPM_INIT_CRQ_COMPLETE_RESULT; + spapr_vio_send_crq(dev, local_crq.raw); + break; + } + + break; + case SPAPR_VTPM_VALID_COMMAND: /* Payloads */ + switch (local_crq.s.msg) { + case SPAPR_VTPM_TPM_COMMAND: + trace_tpm_spapr_do_crq_tpm_command(); + if (s->state == SPAPR_VTPM_STATE_EXECUTION) { + return H_BUSY; + } + /* this crq is tracked */ + memcpy(crq->raw, crq_data, sizeof(crq->raw)); + + rc = tpm_spapr_process_cmd(s, be32_to_cpu(crq->s.data)); + + if (rc == H_SUCCESS) { + crq->s.valid = be16_to_cpu(0); + } else { + local_crq.s.valid = SPAPR_VTPM_MSG_RESULT; + local_crq.s.msg = SPAPR_VTPM_VTPM_ERROR; + local_crq.s.data = cpu_to_be32(SPAPR_VTPM_ERR_COPY_IN_FAILED); + spapr_vio_send_crq(dev, local_crq.raw); + } + break; + + case SPAPR_VTPM_GET_RTCE_BUFFER_SIZE: + trace_tpm_spapr_do_crq_tpm_get_rtce_buffer_size(s->be_buffer_size); + local_crq.s.msg |= SPAPR_VTPM_MSG_RESULT; + local_crq.s.len = cpu_to_be16(s->be_buffer_size); + spapr_vio_send_crq(dev, local_crq.raw); + break; + + case SPAPR_VTPM_GET_VERSION: + local_crq.s.msg |= SPAPR_VTPM_MSG_RESULT; + local_crq.s.len = cpu_to_be16(0); + switch (s->be_tpm_version) { + case TPM_VERSION_UNSPEC: + local_crq.s.data = cpu_to_be32(0); + break; + case TPM_VERSION_1_2: + local_crq.s.data = cpu_to_be32(1); + break; + case TPM_VERSION_2_0: + local_crq.s.data = cpu_to_be32(2); + break; + } + trace_tpm_spapr_do_crq_get_version(be32_to_cpu(local_crq.s.data)); + spapr_vio_send_crq(dev, local_crq.raw); + break; + + case SPAPR_VTPM_PREPARE_TO_SUSPEND: + trace_tpm_spapr_do_crq_prepare_to_suspend(); + local_crq.s.msg |= SPAPR_VTPM_MSG_RESULT; + spapr_vio_send_crq(dev, local_crq.raw); + break; + + default: + trace_tpm_spapr_do_crq_unknown_msg_type(crq->s.msg); + } + break; + default: + trace_tpm_spapr_do_crq_unknown_crq(local_crq.raw[0], local_crq.raw[1]); + }; + + return H_SUCCESS; +} + +static void tpm_spapr_request_completed(TPMIf *ti, int ret) +{ + SPAPRvTPMState *s = VIO_SPAPR_VTPM(ti); + TPMSpaprCRQ *crq = &s->crq; + uint32_t len; + int rc; + + s->state = SPAPR_VTPM_STATE_COMPLETION; + + /* a max. of be_buffer_size bytes can be transported */ + len = MIN(tpm_cmd_get_size(s->buffer), s->be_buffer_size); + rc = spapr_vio_dma_write(&s->vdev, be32_to_cpu(crq->s.data), + s->buffer, len); + + if (trace_event_get_state_backends(TRACE_TPM_SPAPR_SHOW_BUFFER)) { + tpm_spapr_show_buffer(s->buffer, len, "From TPM"); + } + + crq->s.valid = SPAPR_VTPM_MSG_RESULT; + if (rc == H_SUCCESS) { + crq->s.msg = SPAPR_VTPM_TPM_COMMAND | SPAPR_VTPM_MSG_RESULT; + crq->s.len = cpu_to_be16(len); + } else { + error_report("%s: DMA write failure", __func__); + crq->s.msg = SPAPR_VTPM_VTPM_ERROR; + crq->s.len = cpu_to_be16(0); + crq->s.data = cpu_to_be32(SPAPR_VTPM_ERR_COPY_OUT_FAILED); + } + + rc = spapr_vio_send_crq(&s->vdev, crq->raw); + if (rc) { + error_report("%s: Error sending response", __func__); + } +} + +static int tpm_spapr_do_startup_tpm(SPAPRvTPMState *s, size_t buffersize) +{ + return tpm_backend_startup_tpm(s->be_driver, buffersize); +} + +static void tpm_spapr_update_deviceclass(SpaprVioDevice *dev) +{ + SPAPRvTPMState *s = VIO_SPAPR_VTPM(dev); + SpaprVioDeviceClass *k = VIO_SPAPR_DEVICE_GET_CLASS(dev); + + switch (s->be_tpm_version) { + case TPM_VERSION_UNSPEC: + assert(false); + break; + case TPM_VERSION_1_2: + k->dt_name = "vtpm"; + k->dt_type = "IBM,vtpm"; + k->dt_compatible = "IBM,vtpm"; + break; + case TPM_VERSION_2_0: + k->dt_name = "vtpm"; + k->dt_type = "IBM,vtpm"; + k->dt_compatible = "IBM,vtpm20"; + break; + } +} + +static void tpm_spapr_reset(SpaprVioDevice *dev) +{ + SPAPRvTPMState *s = VIO_SPAPR_VTPM(dev); + + s->state = SPAPR_VTPM_STATE_NONE; + + s->be_tpm_version = tpm_backend_get_tpm_version(s->be_driver); + tpm_spapr_update_deviceclass(dev); + + s->be_buffer_size = MAX(ROUND_UP(tpm_backend_get_buffer_size(s->be_driver), + TARGET_PAGE_SIZE), + sizeof(s->buffer)); + + tpm_backend_reset(s->be_driver); + tpm_spapr_do_startup_tpm(s, s->be_buffer_size); +} + +static enum TPMVersion tpm_spapr_get_version(TPMIf *ti) +{ + SPAPRvTPMState *s = VIO_SPAPR_VTPM(ti); + + if (tpm_backend_had_startup_error(s->be_driver)) { + return TPM_VERSION_UNSPEC; + } + + return tpm_backend_get_tpm_version(s->be_driver); +} + +static const VMStateDescription vmstate_spapr_vtpm = { + .name = "tpm-spapr", + .unmigratable = 1, +}; + +static Property tpm_spapr_properties[] = { + DEFINE_SPAPR_PROPERTIES(SPAPRvTPMState, vdev), + DEFINE_PROP_TPMBE("tpmdev", SPAPRvTPMState, be_driver), + DEFINE_PROP_END_OF_LIST(), +}; + +static void tpm_spapr_realizefn(SpaprVioDevice *dev, Error **errp) +{ + SPAPRvTPMState *s = VIO_SPAPR_VTPM(dev); + + if (!tpm_find()) { + error_setg(errp, "at most one TPM device is permitted"); + return; + } + + dev->crq.SendFunc = tpm_spapr_do_crq; + + if (!s->be_driver) { + error_setg(errp, "'tpmdev' property is required"); + return; + } +} + +static void tpm_spapr_class_init(ObjectClass *klass, void *data) +{ + DeviceClass *dc = DEVICE_CLASS(klass); + SpaprVioDeviceClass *k = VIO_SPAPR_DEVICE_CLASS(klass); + TPMIfClass *tc = TPM_IF_CLASS(klass); + + k->realize = tpm_spapr_realizefn; + k->reset = tpm_spapr_reset; + k->signal_mask = 0x00000001; + set_bit(DEVICE_CATEGORY_MISC, dc->categories); + dc->props = tpm_spapr_properties; + k->rtce_window_size = 0x10000000; + dc->vmsd = &vmstate_spapr_vtpm; + + tc->model = TPM_MODEL_TPM_SPAPR; + tc->get_version = tpm_spapr_get_version; + tc->request_completed = tpm_spapr_request_completed; +} + +static const TypeInfo tpm_spapr_info = { + .name = TYPE_TPM_SPAPR, + .parent = TYPE_VIO_SPAPR_DEVICE, + .instance_size = sizeof(SPAPRvTPMState), + .class_init = tpm_spapr_class_init, + .interfaces = (InterfaceInfo[]) { + { TYPE_TPM_IF }, + { } + } +}; + +static void tpm_spapr_register_types(void) +{ + type_register_static(&tpm_spapr_info); +} + +type_init(tpm_spapr_register_types) diff --git a/hw/tpm/trace-events b/hw/tpm/trace-events index 89804bcd64..6278a39618 100644 --- a/hw/tpm/trace-events +++ b/hw/tpm/trace-events @@ -55,3 +55,15 @@ tpm_tis_pre_save(uint8_t locty, uint32_t rw_offset) "locty: %d, rw_offset = %u" # tpm_ppi.c tpm_ppi_memset(uint8_t *ptr, size_t size) "memset: %p %zu" + +# hw/tpm/tpm_spapr.c +tpm_spapr_show_buffer(const char *direction, size_t len, const char *buf) "direction: %s len: %zu\n%s" +tpm_spapr_do_crq(uint8_t raw1, uint8_t raw2) "1st 2 bytes in CRQ: 0x%02x 0x%02x" +tpm_spapr_do_crq_crq_result(void) "SPAPR_VTPM_INIT_CRQ_RESULT" +tpm_spapr_do_crq_crq_complete_result(void) "SPAPR_VTPM_INIT_CRQ_COMP_RESULT" +tpm_spapr_do_crq_tpm_command(void) "got TPM command payload" +tpm_spapr_do_crq_tpm_get_rtce_buffer_size(size_t buffersize) "response: buffer size is %zu" +tpm_spapr_do_crq_get_version(uint32_t version) "response: version %u" +tpm_spapr_do_crq_prepare_to_suspend(void) "response: preparing to suspend" +tpm_spapr_do_crq_unknown_msg_type(uint8_t type) "Unknown message type 0x%02x" +tpm_spapr_do_crq_unknown_crq(uint8_t raw1, uint8_t raw2) "unknown CRQ 0x%02x 0x%02x ..." diff --git a/include/sysemu/tpm.h b/include/sysemu/tpm.h index 5b541a71c8..15979a3647 100644 --- a/include/sysemu/tpm.h +++ b/include/sysemu/tpm.h @@ -45,11 +45,14 @@ typedef struct TPMIfClass { #define TYPE_TPM_TIS "tpm-tis" #define TYPE_TPM_CRB "tpm-crb" +#define TYPE_TPM_SPAPR "tpm-spapr" #define TPM_IS_TIS(chr) \ object_dynamic_cast(OBJECT(chr), TYPE_TPM_TIS) #define TPM_IS_CRB(chr) \ object_dynamic_cast(OBJECT(chr), TYPE_TPM_CRB) +#define TPM_IS_SPAPR(chr) \ + object_dynamic_cast(OBJECT(chr), TYPE_TPM_SPAPR) /* returns NULL unless there is exactly one TPM device */ static inline TPMIf *tpm_find(void) diff --git a/qapi/tpm.json b/qapi/tpm.json index b30323bb6b..63878aa0f4 100644 --- a/qapi/tpm.json +++ b/qapi/tpm.json @@ -12,11 +12,11 @@ # # @tpm-tis: TPM TIS model # @tpm-crb: TPM CRB model (since 2.12) +# @tpm-spapr: TPM SPAPR model (since 5.0) # # Since: 1.5 ## -{ 'enum': 'TpmModel', 'data': [ 'tpm-tis', 'tpm-crb' ] } - +{ 'enum': 'TpmModel', 'data': [ 'tpm-tis', 'tpm-crb', 'tpm-spapr' ] } ## # @query-tpm-models: # @@ -29,7 +29,7 @@ # Example: # # -> { "execute": "query-tpm-models" } -# <- { "return": [ "tpm-tis", "tpm-crb" ] } +# <- { "return": [ "tpm-tis", "tpm-crb", "tpm-spapr" ] } # ## { 'command': 'query-tpm-models', 'returns': ['TpmModel'] } From patchwork Thu Dec 12 20:24:27 2019 Content-Type: text/plain; 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Thu, 12 Dec 2019 20:25:11 +0000 (GMT) From: Stefan Berger To: qemu-ppc@nongnu.org Subject: [PATCH v5 2/5] tpm: Return bool from tpm_backend_finish_sync Date: Thu, 12 Dec 2019 15:24:27 -0500 Message-Id: <20191212202430.1079725-3-stefanb@linux.vnet.ibm.com> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20191212202430.1079725-1-stefanb@linux.vnet.ibm.com> References: <20191212202430.1079725-1-stefanb@linux.vnet.ibm.com> MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.95, 18.0.572 definitions=2019-12-12_06:2019-12-12, 2019-12-12 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 mlxscore=0 lowpriorityscore=0 malwarescore=0 mlxlogscore=999 impostorscore=0 priorityscore=1501 clxscore=1015 suspectscore=1 bulkscore=0 spamscore=0 adultscore=0 phishscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-1910280000 definitions=main-1912120157 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x [generic] [fuzzy] X-Received-From: 148.163.158.5 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: marcandre.lureau@redhat.com, Stefan Berger , qemu-devel@nongnu.org, david@gibson.dropbear.id.au Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" Return true in case we had to wait for an outstanding response to come back, false otherwise. Signed-off-by: Stefan Berger diff --git a/backends/tpm.c b/backends/tpm.c index 375587e743..1f75883d8a 100644 --- a/backends/tpm.c +++ b/backends/tpm.c @@ -49,11 +49,15 @@ static int tpm_backend_worker_thread(gpointer data) return 0; } -void tpm_backend_finish_sync(TPMBackend *s) +bool tpm_backend_finish_sync(TPMBackend *s) { + bool ret = s->cmd != NULL; + while (s->cmd) { aio_poll(qemu_get_aio_context(), true); } + + return ret; } enum TpmType tpm_backend_get_type(TPMBackend *s) diff --git a/include/sysemu/tpm_backend.h b/include/sysemu/tpm_backend.h index 9e7451fb52..c35fe85c62 100644 --- a/include/sysemu/tpm_backend.h +++ b/include/sysemu/tpm_backend.h @@ -200,8 +200,10 @@ size_t tpm_backend_get_buffer_size(TPMBackend *s); * * Finish the pending command synchronously (this will call aio_poll() * on qemu main AIOContext until it ends) + * + * Returns true in case there was a pending command, false otherwise. */ -void tpm_backend_finish_sync(TPMBackend *s); +bool tpm_backend_finish_sync(TPMBackend *s); /** * tpm_backend_query_tpm: From patchwork Thu Dec 12 20:24:28 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stefan Berger X-Patchwork-Id: 1208839 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=linux.vnet.ibm.com 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 ozlabs.org (Postfix) with ESMTPS id 47YlgF1l2mz9sPK for ; Fri, 13 Dec 2019 07:26:01 +1100 (AEDT) Received: from localhost ([::1]:36990 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1ifV26-0008NA-TJ for incoming@patchwork.ozlabs.org; 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Thu, 12 Dec 2019 20:25:11 +0000 (GMT) Received: from b01ledav006.gho.pok.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id A488DAC062; Thu, 12 Dec 2019 20:25:11 +0000 (GMT) Received: from sbct-3.pok.ibm.com (unknown [9.47.158.153]) by b01ledav006.gho.pok.ibm.com (Postfix) with ESMTP; Thu, 12 Dec 2019 20:25:11 +0000 (GMT) From: Stefan Berger To: qemu-ppc@nongnu.org Subject: [PATCH v5 3/5] tpm_spapr: Support suspend and resume Date: Thu, 12 Dec 2019 15:24:28 -0500 Message-Id: <20191212202430.1079725-4-stefanb@linux.vnet.ibm.com> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20191212202430.1079725-1-stefanb@linux.vnet.ibm.com> References: <20191212202430.1079725-1-stefanb@linux.vnet.ibm.com> MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.95, 18.0.572 definitions=2019-12-12_06:2019-12-12, 2019-12-12 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 mlxscore=0 clxscore=1015 mlxlogscore=999 impostorscore=0 suspectscore=1 bulkscore=0 adultscore=0 lowpriorityscore=0 spamscore=0 priorityscore=1501 malwarescore=0 phishscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-1910280000 definitions=main-1912120157 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x [generic] [fuzzy] X-Received-From: 148.163.156.1 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: marcandre.lureau@redhat.com, Stefan Berger , qemu-devel@nongnu.org, david@gibson.dropbear.id.au Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" Extend the tpm_spapr frontend with VM suspend and resume support. Signed-off-by: Stefan Berger diff --git a/hw/tpm/tpm_spapr.c b/hw/tpm/tpm_spapr.c index c4a67e2403..8f5a142bd4 100644 --- a/hw/tpm/tpm_spapr.c +++ b/hw/tpm/tpm_spapr.c @@ -87,6 +87,8 @@ typedef struct { TPMVersion be_tpm_version; size_t be_buffer_size; + + bool deliver_response; /* whether to deliver response after VM resume */ } SPAPRvTPMState; static void tpm_spapr_show_buffer(const unsigned char *buffer, @@ -256,6 +258,12 @@ static void tpm_spapr_request_completed(TPMIf *ti, int ret) uint32_t len; int rc; + if (runstate_check(RUN_STATE_FINISH_MIGRATE)) { + /* defer delivery of response until .post_load */ + s->deliver_response |= true; + return; + } + s->state = SPAPR_VTPM_STATE_COMPLETION; /* a max. of be_buffer_size bytes can be transported */ @@ -316,6 +324,7 @@ static void tpm_spapr_reset(SpaprVioDevice *dev) SPAPRvTPMState *s = VIO_SPAPR_VTPM(dev); s->state = SPAPR_VTPM_STATE_NONE; + s->deliver_response = false; s->be_tpm_version = tpm_backend_get_tpm_version(s->be_driver); tpm_spapr_update_deviceclass(dev); @@ -339,9 +348,53 @@ static enum TPMVersion tpm_spapr_get_version(TPMIf *ti) return tpm_backend_get_tpm_version(s->be_driver); } +/* persistent state handling */ + +static int tpm_spapr_pre_save(void *opaque) +{ + SPAPRvTPMState *s = opaque; + + s->deliver_response |= tpm_backend_finish_sync(s->be_driver); + + trace_tpm_spapr_pre_save(s->deliver_response); + /* + * we cannot deliver the results to the VM since DMA would touch VM memory + */ + + return 0; +} + +static int tpm_spapr_post_load(void *opaque, int version_id) +{ + SPAPRvTPMState *s = opaque; + + if (s->deliver_response) { + trace_tpm_spapr_post_load(); + /* deliver the results to the VM via DMA */ + tpm_spapr_request_completed(TPM_IF(s), 0); + s->deliver_response = false; + } + + return 0; +} + static const VMStateDescription vmstate_spapr_vtpm = { .name = "tpm-spapr", - .unmigratable = 1, + .version_id = 1, + .minimum_version_id = 0, + .minimum_version_id_old = 0, + .pre_save = tpm_spapr_pre_save, + .post_load = tpm_spapr_post_load, + .fields = (VMStateField[]) { + VMSTATE_SPAPR_VIO(vdev, SPAPRvTPMState), + + VMSTATE_UINT8(state, SPAPRvTPMState), + VMSTATE_BUFFER(buffer, SPAPRvTPMState), + /* remember DMA address */ + VMSTATE_UINT32(crq.s.data, SPAPRvTPMState), + VMSTATE_BOOL(deliver_response, SPAPRvTPMState), + VMSTATE_END_OF_LIST(), + } }; static Property tpm_spapr_properties[] = { diff --git a/hw/tpm/trace-events b/hw/tpm/trace-events index 6278a39618..d109661b96 100644 --- a/hw/tpm/trace-events +++ b/hw/tpm/trace-events @@ -67,3 +67,5 @@ tpm_spapr_do_crq_get_version(uint32_t version) "response: version %u" tpm_spapr_do_crq_prepare_to_suspend(void) "response: preparing to suspend" tpm_spapr_do_crq_unknown_msg_type(uint8_t type) "Unknown message type 0x%02x" tpm_spapr_do_crq_unknown_crq(uint8_t raw1, uint8_t raw2) "unknown CRQ 0x%02x 0x%02x ..." +tpm_spapr_pre_save(bool v) "TPM response to deliver after resume: %d" +tpm_spapr_post_load(void) "Delivering TPM response after resume" From patchwork Thu Dec 12 20:24:29 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stefan Berger X-Patchwork-Id: 1208840 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; 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Thu, 12 Dec 2019 20:25:11 +0000 (GMT) From: Stefan Berger To: qemu-ppc@nongnu.org Subject: [PATCH v5 4/5] hw/ppc/Kconfig: Enable TPM_SPAPR as part of PSERIES config Date: Thu, 12 Dec 2019 15:24:29 -0500 Message-Id: <20191212202430.1079725-5-stefanb@linux.vnet.ibm.com> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20191212202430.1079725-1-stefanb@linux.vnet.ibm.com> References: <20191212202430.1079725-1-stefanb@linux.vnet.ibm.com> MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.95, 18.0.572 definitions=2019-12-12_06:2019-12-12, 2019-12-12 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 suspectscore=1 adultscore=0 priorityscore=1501 mlxscore=0 lowpriorityscore=0 clxscore=1015 mlxlogscore=978 malwarescore=0 phishscore=0 spamscore=0 bulkscore=0 impostorscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-1910280000 definitions=main-1912120157 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x [generic] [fuzzy] X-Received-From: 148.163.156.1 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: marcandre.lureau@redhat.com, Stefan Berger , Stefan Berger , qemu-devel@nongnu.org, david@gibson.dropbear.id.au Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" Signed-off-by: Stefan Berger diff --git a/hw/ppc/Kconfig b/hw/ppc/Kconfig index f927ec9c74..b5b3519158 100644 --- a/hw/ppc/Kconfig +++ b/hw/ppc/Kconfig @@ -10,6 +10,7 @@ config PSERIES select XICS_SPAPR select XIVE_SPAPR select MSI_NONBROKEN + select TPM_SPAPR config SPAPR_RNG bool From patchwork Thu Dec 12 20:24:30 2019 Content-Type: text/plain; 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Thu, 12 Dec 2019 20:25:11 +0000 (GMT) From: Stefan Berger To: qemu-ppc@nongnu.org Subject: [PATCH v5 5/5] docs: tpm: Add example command line for ppc64 and tpm-spapr Date: Thu, 12 Dec 2019 15:24:30 -0500 Message-Id: <20191212202430.1079725-6-stefanb@linux.vnet.ibm.com> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20191212202430.1079725-1-stefanb@linux.vnet.ibm.com> References: <20191212202430.1079725-1-stefanb@linux.vnet.ibm.com> MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.95, 18.0.572 definitions=2019-12-12_06:2019-12-12, 2019-12-12 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 impostorscore=0 priorityscore=1501 malwarescore=0 spamscore=0 mlxscore=0 adultscore=0 lowpriorityscore=0 suspectscore=1 mlxlogscore=999 bulkscore=0 phishscore=0 clxscore=1015 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-1910280000 definitions=main-1912120157 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x [generic] [fuzzy] X-Received-From: 148.163.156.1 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: marcandre.lureau@redhat.com, Stefan Berger , Stefan Berger , qemu-devel@nongnu.org, david@gibson.dropbear.id.au Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" Add an example to the TPM docs for how to add a TPM SPAPR device model to a QEMU VM emulating a pSeries machine. Signed-off-by: Stefan Berger diff --git a/docs/specs/tpm.txt b/docs/specs/tpm.txt index 9c8cca042d..9c3e67d8a7 100644 --- a/docs/specs/tpm.txt +++ b/docs/specs/tpm.txt @@ -34,6 +34,12 @@ The CRB interface makes a memory mapped IO region in the area 0xfed40000 - QEMU files related to TPM CRB interface: - hw/tpm/tpm_crb.c + +pSeries (ppc64) machines offer a tpm-spapr device model. + +QEMU files related to the SPAPR interface: + - hw/tpm/tpm_spapr.c + = fw_cfg interface = The bios/firmware may read the "etc/tpm/config" fw_cfg entry for @@ -281,7 +287,7 @@ swtpm socket --tpmstate dir=/tmp/mytpm1 \ --log level=20 Command line to start QEMU with the TPM emulator device communicating with -the swtpm: +the swtpm (x86): qemu-system-x86_64 -display sdl -accel kvm \ -m 1024 -boot d -bios bios-256k.bin -boot menu=on \ @@ -289,6 +295,18 @@ qemu-system-x86_64 -display sdl -accel kvm \ -tpmdev emulator,id=tpm0,chardev=chrtpm \ -device tpm-tis,tpmdev=tpm0 test.img +In case a pSeries machine is emulated, use the following command line: + +qemu-system-ppc64 -display sdl -machine pseries,accel=kvm \ + -m 1024 -bios slof.bin -boot menu=on \ + -nodefaults -device VGA -device pci-ohci -device usb-kbd \ + -chardev socket,id=chrtpm,path=/tmp/mytpm1/swtpm-sock \ + -tpmdev emulator,id=tpm0,chardev=chrtpm \ + -device tpm-spapr,tpmdev=tpm0 \ + -device spapr-vscsi,id=scsi0,reg=0x00002000 \ + -device virtio-blk-pci,scsi=off,bus=pci.0,addr=0x3,drive=drive-virtio-disk0,id=virtio-disk0 \ + -drive file=test.img,format=raw,if=none,id=drive-virtio-disk0 + In case SeaBIOS is used as firmware, it should show the TPM menu item after entering the menu with 'ESC'.