tpm: Separate tpm_tis common functions from isa code

Move the device agnostic code into tpm_tis_common.c and
put the ISA device specific code into tpm_tis_isa.c

Signed-off-by: Eric Auger <eric.auger@redhat.com>
Reviewed-by: Stefan Berger <stefanb@linux.ibm.com>
Tested-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Acked-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Message-id: 20200305165149.618-4-eric.auger@redhat.com
Signed-off-by: Stefan Berger <stefanb@linux.ibm.com>

1 files changed, 91 insertions, 0 deletions

diff --git a/hw/tpm/tpm_tis.h b/hw/tpm/tpm_tis.h
new file mode 100644
index 0000000..5554989
--- /dev/null
+++ b/hw/tpm/tpm_tis.h
@@ -0,0 +1,91 @@
+/*
+ * tpm_tis.h - QEMU's TPM TIS common header
+ *
+ * Copyright (C) 2006,2010-2013 IBM Corporation
+ *
+ * Authors:
+ *  Stefan Berger <stefanb@us.ibm.com>
+ *  David Safford <safford@us.ibm.com>
+ *
+ * Xen 4 support: Andrease Niederl <andreas.niederl@iaik.tugraz.at>
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or later.
+ * See the COPYING file in the top-level directory.
+ *
+ * Implementation of the TIS interface according to specs found at
+ * http://www.trustedcomputinggroup.org. This implementation currently
+ * supports version 1.3, 21 March 2013
+ * In the developers menu choose the PC Client section then find the TIS
+ * specification.
+ *
+ * TPM TIS for TPM 2 implementation following TCG PC Client Platform
+ * TPM Profile (PTP) Specification, Familiy 2.0, Revision 00.43
+ */
+#ifndef TPM_TPM_TIS_H
+#define TPM_TPM_TIS_H
+
+#include "qemu/osdep.h"
+#include "sysemu/tpm_backend.h"
+#include "tpm_ppi.h"
+
+#define TPM_TIS_NUM_LOCALITIES      5     /* per spec */
+#define TPM_TIS_LOCALITY_SHIFT      12
+#define TPM_TIS_NO_LOCALITY         0xff
+
+#define TPM_TIS_IS_VALID_LOCTY(x)   ((x) < TPM_TIS_NUM_LOCALITIES)
+
+#define TPM_TIS_BUFFER_MAX          4096
+
+typedef enum {
+    TPM_TIS_STATE_IDLE = 0,
+    TPM_TIS_STATE_READY,
+    TPM_TIS_STATE_COMPLETION,
+    TPM_TIS_STATE_EXECUTION,
+    TPM_TIS_STATE_RECEPTION,
+} TPMTISState;
+
+/* locality data  -- all fields are persisted */
+typedef struct TPMLocality {
+    TPMTISState state;
+    uint8_t access;
+    uint32_t sts;
+    uint32_t iface_id;
+    uint32_t inte;
+    uint32_t ints;
+} TPMLocality;
+
+typedef struct TPMState {
+    MemoryRegion mmio;
+
+    unsigned char buffer[TPM_TIS_BUFFER_MAX];
+    uint16_t rw_offset;
+
+    uint8_t active_locty;
+    uint8_t aborting_locty;
+    uint8_t next_locty;
+
+    TPMLocality loc[TPM_TIS_NUM_LOCALITIES];
+
+    qemu_irq irq;
+    uint32_t irq_num;
+
+    TPMBackendCmd cmd;
+
+    TPMBackend *be_driver;
+    TPMVersion be_tpm_version;
+
+    size_t be_buffer_size;
+
+    bool ppi_enabled;
+    TPMPPI ppi;
+} TPMState;
+
+extern const VMStateDescription vmstate_locty;
+extern const MemoryRegionOps tpm_tis_memory_ops;
+
+int tpm_tis_pre_save(TPMState *s);
+void tpm_tis_reset(TPMState *s);
+enum TPMVersion tpm_tis_get_tpm_version(TPMState *s);
+void tpm_tis_request_completed(TPMState *s, int ret);
+
+#endif /* TPM_TPM_TIS_H */