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tpm-tis: fold TPMTISEmuState in TPMState

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Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Stefan Berger <stefanb@linux.vnet.ibm.com>
Signed-off-by: Stefan Berger <stefanb@linux.vnet.ibm.com>
This commit is contained in:
Marc-André Lureau 2017-10-10 00:56:00 +02:00 committed by Stefan Berger
parent 732cd5877e
commit 3d4960c7ad
1 changed files with 156 additions and 178 deletions
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334
hw/tpm/tpm_tis.c
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@ -72,7 +72,10 @@ typedef struct TPMLocality {
TPMSizedBuffer r_buffer;
} TPMLocality;
typedef struct TPMTISEmuState {
struct TPMState {
ISADevice busdev;
MemoryRegion mmio;
QEMUBH *bh;
uint32_t offset;
uint8_t buf[TPM_TIS_BUFFER_MAX];
@ -85,15 +88,6 @@ typedef struct TPMTISEmuState {
qemu_irq irq;
uint32_t irq_num;
} TPMTISEmuState;
struct TPMState {
ISADevice busdev;
MemoryRegion mmio;
union {
TPMTISEmuState tis;
} s;
uint8_t locty_number;
TPMBackendCmd cmd;
@ -272,16 +266,15 @@ static void tpm_tis_sts_set(TPMLocality *l, uint32_t flags)
*/
static void tpm_tis_tpm_send(TPMState *s, uint8_t locty)
{
TPMTISEmuState *tis = &s->s.tis;
TPMLocality *locty_data = &tis->loc[locty];
TPMLocality *locty_data = &s->loc[locty];
tpm_tis_show_buffer(&tis->loc[locty].w_buffer, "tpm_tis: To TPM");
tpm_tis_show_buffer(&s->loc[locty].w_buffer, "tpm_tis: To TPM");
/*
* w_offset serves as length indicator for length of data;
* it's reset when the response comes back
*/
tis->loc[locty].state = TPM_TIS_STATE_EXECUTION;
s->loc[locty].state = TPM_TIS_STATE_EXECUTION;
s->cmd = (TPMBackendCmd) {
.locty = locty,
@ -297,17 +290,15 @@ static void tpm_tis_tpm_send(TPMState *s, uint8_t locty)
/* raise an interrupt if allowed */
static void tpm_tis_raise_irq(TPMState *s, uint8_t locty, uint32_t irqmask)
{
TPMTISEmuState *tis = &s->s.tis;
if (!TPM_TIS_IS_VALID_LOCTY(locty)) {
return;
}
if ((tis->loc[locty].inte & TPM_TIS_INT_ENABLED) &&
(tis->loc[locty].inte & irqmask)) {
if ((s->loc[locty].inte & TPM_TIS_INT_ENABLED) &&
(s->loc[locty].inte & irqmask)) {
DPRINTF("tpm_tis: Raising IRQ for flag %08x\n", irqmask);
qemu_irq_raise(s->s.tis.irq);
tis->loc[locty].ints |= irqmask;
qemu_irq_raise(s->irq);
s->loc[locty].ints |= irqmask;
}
}
@ -319,7 +310,7 @@ static uint32_t tpm_tis_check_request_use_except(TPMState *s, uint8_t locty)
if (l == locty) {
continue;
}
if ((s->s.tis.loc[l].access & TPM_TIS_ACCESS_REQUEST_USE)) {
if ((s->loc[l].access & TPM_TIS_ACCESS_REQUEST_USE)) {
return 1;
}
}
@ -329,14 +320,13 @@ static uint32_t tpm_tis_check_request_use_except(TPMState *s, uint8_t locty)
static void tpm_tis_new_active_locality(TPMState *s, uint8_t new_active_locty)
{
TPMTISEmuState *tis = &s->s.tis;
bool change = (s->s.tis.active_locty != new_active_locty);
bool change = (s->active_locty != new_active_locty);
bool is_seize;
uint8_t mask;
if (change && TPM_TIS_IS_VALID_LOCTY(s->s.tis.active_locty)) {
if (change && TPM_TIS_IS_VALID_LOCTY(s->active_locty)) {
is_seize = TPM_TIS_IS_VALID_LOCTY(new_active_locty) &&
tis->loc[new_active_locty].access & TPM_TIS_ACCESS_SEIZE;
s->loc[new_active_locty].access & TPM_TIS_ACCESS_SEIZE;
if (is_seize) {
mask = ~(TPM_TIS_ACCESS_ACTIVE_LOCALITY);
@ -345,73 +335,70 @@ static void tpm_tis_new_active_locality(TPMState *s, uint8_t new_active_locty)
TPM_TIS_ACCESS_REQUEST_USE);
}
/* reset flags on the old active locality */
tis->loc[s->s.tis.active_locty].access &= mask;
s->loc[s->active_locty].access &= mask;
if (is_seize) {
tis->loc[tis->active_locty].access |= TPM_TIS_ACCESS_BEEN_SEIZED;
s->loc[s->active_locty].access |= TPM_TIS_ACCESS_BEEN_SEIZED;
}
}
tis->active_locty = new_active_locty;
s->active_locty = new_active_locty;
DPRINTF("tpm_tis: Active locality is now %d\n", s->s.tis.active_locty);
DPRINTF("tpm_tis: Active locality is now %d\n", s->active_locty);
if (TPM_TIS_IS_VALID_LOCTY(new_active_locty)) {
/* set flags on the new active locality */
tis->loc[new_active_locty].access |= TPM_TIS_ACCESS_ACTIVE_LOCALITY;
tis->loc[new_active_locty].access &= ~(TPM_TIS_ACCESS_REQUEST_USE |
s->loc[new_active_locty].access |= TPM_TIS_ACCESS_ACTIVE_LOCALITY;
s->loc[new_active_locty].access &= ~(TPM_TIS_ACCESS_REQUEST_USE |
TPM_TIS_ACCESS_SEIZE);
}
if (change) {
tpm_tis_raise_irq(s, tis->active_locty, TPM_TIS_INT_LOCALITY_CHANGED);
tpm_tis_raise_irq(s, s->active_locty, TPM_TIS_INT_LOCALITY_CHANGED);
}
}
/* abort -- this function switches the locality */
static void tpm_tis_abort(TPMState *s, uint8_t locty)
{
TPMTISEmuState *tis = &s->s.tis;
s->loc[locty].r_offset = 0;
s->loc[locty].w_offset = 0;
tis->loc[locty].r_offset = 0;
tis->loc[locty].w_offset = 0;
DPRINTF("tpm_tis: tis_abort: new active locality is %d\n", tis->next_locty);
DPRINTF("tpm_tis: tis_abort: new active locality is %d\n", s->next_locty);
/*
* Need to react differently depending on who's aborting now and
* which locality will become active afterwards.
*/
if (tis->aborting_locty == tis->next_locty) {
tis->loc[tis->aborting_locty].state = TPM_TIS_STATE_READY;
tpm_tis_sts_set(&tis->loc[tis->aborting_locty],
if (s->aborting_locty == s->next_locty) {
s->loc[s->aborting_locty].state = TPM_TIS_STATE_READY;
tpm_tis_sts_set(&s->loc[s->aborting_locty],
TPM_TIS_STS_COMMAND_READY);
tpm_tis_raise_irq(s, tis->aborting_locty, TPM_TIS_INT_COMMAND_READY);
tpm_tis_raise_irq(s, s->aborting_locty, TPM_TIS_INT_COMMAND_READY);
}
/* locality after abort is another one than the current one */
tpm_tis_new_active_locality(s, tis->next_locty);
tpm_tis_new_active_locality(s, s->next_locty);
tis->next_locty = TPM_TIS_NO_LOCALITY;
s->next_locty = TPM_TIS_NO_LOCALITY;
/* nobody's aborting a command anymore */
tis->aborting_locty = TPM_TIS_NO_LOCALITY;
s->aborting_locty = TPM_TIS_NO_LOCALITY;
}
/* prepare aborting current command */
static void tpm_tis_prep_abort(TPMState *s, uint8_t locty, uint8_t newlocty)
{
TPMTISEmuState *tis = &s->s.tis;
uint8_t busy_locty;
tis->aborting_locty = locty;
tis->next_locty = newlocty; /* locality after successful abort */
s->aborting_locty = locty;
s->next_locty = newlocty; /* locality after successful abort */
/*
* only abort a command using an interrupt if currently executing
* a command AND if there's a valid connection to the vTPM.
*/
for (busy_locty = 0; busy_locty < TPM_TIS_NUM_LOCALITIES; busy_locty++) {
if (tis->loc[busy_locty].state == TPM_TIS_STATE_EXECUTION) {
if (s->loc[busy_locty].state == TPM_TIS_STATE_EXECUTION) {
/*
* request the backend to cancel. Some backends may not
* support it
@ -427,16 +414,15 @@ static void tpm_tis_prep_abort(TPMState *s, uint8_t locty, uint8_t newlocty)
static void tpm_tis_receive_bh(void *opaque)
{
TPMState *s = opaque;
TPMTISEmuState *tis = &s->s.tis;
uint8_t locty = s->cmd.locty;
tpm_tis_sts_set(&tis->loc[locty],
tpm_tis_sts_set(&s->loc[locty],
TPM_TIS_STS_VALID | TPM_TIS_STS_DATA_AVAILABLE);
tis->loc[locty].state = TPM_TIS_STATE_COMPLETION;
tis->loc[locty].r_offset = 0;
tis->loc[locty].w_offset = 0;
s->loc[locty].state = TPM_TIS_STATE_COMPLETION;
s->loc[locty].r_offset = 0;
s->loc[locty].w_offset = 0;
if (TPM_TIS_IS_VALID_LOCTY(tis->next_locty)) {
if (TPM_TIS_IS_VALID_LOCTY(s->next_locty)) {
tpm_tis_abort(s, locty);
}
@ -449,18 +435,17 @@ static void tpm_tis_receive_bh(void *opaque)
*/
static void tpm_tis_receive_cb(TPMState *s)
{
TPMTISEmuState *tis = &s->s.tis;
bool is_selftest_done = s->cmd.selftest_done;
uint8_t locty = s->cmd.locty;
uint8_t l;
if (is_selftest_done) {
for (l = 0; l < TPM_TIS_NUM_LOCALITIES; l++) {
tis->loc[locty].sts |= TPM_TIS_STS_SELFTEST_DONE;
s->loc[locty].sts |= TPM_TIS_STS_SELFTEST_DONE;
}
}
qemu_bh_schedule(tis->bh);
qemu_bh_schedule(s->bh);
}
/*
@ -468,21 +453,20 @@ static void tpm_tis_receive_cb(TPMState *s)
*/
static uint32_t tpm_tis_data_read(TPMState *s, uint8_t locty)
{
TPMTISEmuState *tis = &s->s.tis;
uint32_t ret = TPM_TIS_NO_DATA_BYTE;
uint16_t len;
if ((tis->loc[locty].sts & TPM_TIS_STS_DATA_AVAILABLE)) {
len = tpm_tis_get_size_from_buffer(&tis->loc[locty].r_buffer);
if ((s->loc[locty].sts & TPM_TIS_STS_DATA_AVAILABLE)) {
len = tpm_tis_get_size_from_buffer(&s->loc[locty].r_buffer);
ret = tis->loc[locty].r_buffer.buffer[tis->loc[locty].r_offset++];
if (tis->loc[locty].r_offset >= len) {
ret = s->loc[locty].r_buffer.buffer[s->loc[locty].r_offset++];
if (s->loc[locty].r_offset >= len) {
/* got last byte */
tpm_tis_sts_set(&tis->loc[locty], TPM_TIS_STS_VALID);
tpm_tis_sts_set(&s->loc[locty], TPM_TIS_STS_VALID);
tpm_tis_raise_irq(s, locty, TPM_TIS_INT_STS_VALID);
}
DPRINTF("tpm_tis: tpm_tis_data_read byte 0x%02x [%d]\n",
ret, tis->loc[locty].r_offset-1);
ret, s->loc[locty].r_offset - 1);
}
return ret;
@ -505,13 +489,12 @@ static void tpm_tis_dump_state(void *opaque, hwaddr addr)
uint8_t locty = tpm_tis_locality_from_addr(addr);
hwaddr base = addr & ~0xfff;
TPMState *s = opaque;
TPMTISEmuState *tis = &s->s.tis;
DPRINTF("tpm_tis: active locality : %d\n"
"tpm_tis: state of locality %d : %d\n"
"tpm_tis: register dump:\n",
tis->active_locty,
locty, tis->loc[locty].state);
s->active_locty,
locty, s->loc[locty].state);
for (idx = 0; regs[idx] != 0xfff; idx++) {
DPRINTF("tpm_tis: 0x%04x : 0x%08x\n", regs[idx],
@ -520,25 +503,25 @@ static void tpm_tis_dump_state(void *opaque, hwaddr addr)
DPRINTF("tpm_tis: read offset : %d\n"
"tpm_tis: result buffer : ",
tis->loc[locty].r_offset);
s->loc[locty].r_offset);
for (idx = 0;
idx < tpm_tis_get_size_from_buffer(&tis->loc[locty].r_buffer);
idx < tpm_tis_get_size_from_buffer(&s->loc[locty].r_buffer);
idx++) {
DPRINTF("%c%02x%s",
tis->loc[locty].r_offset == idx ? '>' : ' ',
tis->loc[locty].r_buffer.buffer[idx],
s->loc[locty].r_offset == idx ? '>' : ' ',
s->loc[locty].r_buffer.buffer[idx],
((idx & 0xf) == 0xf) ? "\ntpm_tis: " : "");
}
DPRINTF("\n"
"tpm_tis: write offset : %d\n"
"tpm_tis: request buffer: ",
tis->loc[locty].w_offset);
s->loc[locty].w_offset);
for (idx = 0;
idx < tpm_tis_get_size_from_buffer(&tis->loc[locty].w_buffer);
idx < tpm_tis_get_size_from_buffer(&s->loc[locty].w_buffer);
idx++) {
DPRINTF("%c%02x%s",
tis->loc[locty].w_offset == idx ? '>' : ' ',
tis->loc[locty].w_buffer.buffer[idx],
s->loc[locty].w_offset == idx ? '>' : ' ',
s->loc[locty].w_buffer.buffer[idx],
((idx & 0xf) == 0xf) ? "\ntpm_tis: " : "");
}
DPRINTF("\n");
@ -553,7 +536,6 @@ static uint64_t tpm_tis_mmio_read(void *opaque, hwaddr addr,
unsigned size)
{
TPMState *s = opaque;
TPMTISEmuState *tis = &s->s.tis;
uint16_t offset = addr & 0xffc;
uint8_t shift = (addr & 0x3) * 8;
uint32_t val = 0xffffffff;
@ -568,7 +550,7 @@ static uint64_t tpm_tis_mmio_read(void *opaque, hwaddr addr,
switch (offset) {
case TPM_TIS_REG_ACCESS:
/* never show the SEIZE flag even though we use it internally */
val = tis->loc[locty].access & ~TPM_TIS_ACCESS_SEIZE;
val = s->loc[locty].access & ~TPM_TIS_ACCESS_SEIZE;
/* the pending flag is always calculated */
if (tpm_tis_check_request_use_except(s, locty)) {
val |= TPM_TIS_ACCESS_PENDING_REQUEST;
@ -576,13 +558,13 @@ static uint64_t tpm_tis_mmio_read(void *opaque, hwaddr addr,
val |= !tpm_backend_get_tpm_established_flag(s->be_driver);
break;
case TPM_TIS_REG_INT_ENABLE:
val = tis->loc[locty].inte;
val = s->loc[locty].inte;
break;
case TPM_TIS_REG_INT_VECTOR:
val = tis->irq_num;
val = s->irq_num;
break;
case TPM_TIS_REG_INT_STATUS:
val = tis->loc[locty].ints;
val = s->loc[locty].ints;
break;
case TPM_TIS_REG_INTF_CAPABILITY:
switch (s->be_tpm_version) {
@ -598,14 +580,14 @@ static uint64_t tpm_tis_mmio_read(void *opaque, hwaddr addr,
}
break;
case TPM_TIS_REG_STS:
if (tis->active_locty == locty) {
if ((tis->loc[locty].sts & TPM_TIS_STS_DATA_AVAILABLE)) {
if (s->active_locty == locty) {
if ((s->loc[locty].sts & TPM_TIS_STS_DATA_AVAILABLE)) {
val = TPM_TIS_BURST_COUNT(
tpm_tis_get_size_from_buffer(&tis->loc[locty].r_buffer)
- tis->loc[locty].r_offset) | tis->loc[locty].sts;
tpm_tis_get_size_from_buffer(&s->loc[locty].r_buffer)
- s->loc[locty].r_offset) | s->loc[locty].sts;
} else {
avail = tis->loc[locty].w_buffer.size
- tis->loc[locty].w_offset;
avail = s->loc[locty].w_buffer.size
- s->loc[locty].w_offset;
/*
* byte-sized reads should not return 0x00 for 0x100
* available bytes.
@ -613,13 +595,13 @@ static uint64_t tpm_tis_mmio_read(void *opaque, hwaddr addr,
if (size == 1 && avail > 0xff) {
avail = 0xff;
}
val = TPM_TIS_BURST_COUNT(avail) | tis->loc[locty].sts;
val = TPM_TIS_BURST_COUNT(avail) | s->loc[locty].sts;
}
}
break;
case TPM_TIS_REG_DATA_FIFO:
case TPM_TIS_REG_DATA_XFIFO ... TPM_TIS_REG_DATA_XFIFO_END:
if (tis->active_locty == locty) {
if (s->active_locty == locty) {
if (size > 4 - (addr & 0x3)) {
/* prevent access beyond FIFO */
size = 4 - (addr & 0x3);
@ -627,7 +609,7 @@ static uint64_t tpm_tis_mmio_read(void *opaque, hwaddr addr,
val = 0;
shift = 0;
while (size > 0) {
switch (tis->loc[locty].state) {
switch (s->loc[locty].state) {
case TPM_TIS_STATE_COMPLETION:
v = tpm_tis_data_read(s, locty);
break;
@ -643,7 +625,7 @@ static uint64_t tpm_tis_mmio_read(void *opaque, hwaddr addr,
}
break;
case TPM_TIS_REG_INTERFACE_ID:
val = tis->loc[locty].iface_id;
val = s->loc[locty].iface_id;
break;
case TPM_TIS_REG_DID_VID:
val = (TPM_TIS_TPM_DID << 16) | TPM_TIS_TPM_VID;
@ -675,7 +657,6 @@ static void tpm_tis_mmio_write(void *opaque, hwaddr addr,
uint64_t val, unsigned size)
{
TPMState *s = opaque;
TPMTISEmuState *tis = &s->s.tis;
uint16_t off = addr & 0xffc;
uint8_t shift = (addr & 0x3) * 8;
uint8_t locty = tpm_tis_locality_from_addr(addr);
@ -712,17 +693,17 @@ static void tpm_tis_mmio_write(void *opaque, hwaddr addr,
TPM_TIS_ACCESS_ACTIVE_LOCALITY);
}
active_locty = tis->active_locty;
active_locty = s->active_locty;
if ((val & TPM_TIS_ACCESS_ACTIVE_LOCALITY)) {
/* give up locality if currently owned */
if (tis->active_locty == locty) {
if (s->active_locty == locty) {
DPRINTF("tpm_tis: Releasing locality %d\n", locty);
uint8_t newlocty = TPM_TIS_NO_LOCALITY;
/* anybody wants the locality ? */
for (c = TPM_TIS_NUM_LOCALITIES - 1; c >= 0; c--) {
if ((tis->loc[c].access & TPM_TIS_ACCESS_REQUEST_USE)) {
if ((s->loc[c].access & TPM_TIS_ACCESS_REQUEST_USE)) {
DPRINTF("tpm_tis: Locality %d requests use.\n", c);
newlocty = c;
break;
@ -740,12 +721,12 @@ static void tpm_tis_mmio_write(void *opaque, hwaddr addr,
}
} else {
/* not currently the owner; clear a pending request */
tis->loc[locty].access &= ~TPM_TIS_ACCESS_REQUEST_USE;
s->loc[locty].access &= ~TPM_TIS_ACCESS_REQUEST_USE;
}
}
if ((val & TPM_TIS_ACCESS_BEEN_SEIZED)) {
tis->loc[locty].access &= ~TPM_TIS_ACCESS_BEEN_SEIZED;
s->loc[locty].access &= ~TPM_TIS_ACCESS_BEEN_SEIZED;
}
if ((val & TPM_TIS_ACCESS_SEIZE)) {
@ -756,19 +737,19 @@ static void tpm_tis_mmio_write(void *opaque, hwaddr addr,
* allow seize for requesting locality if no locality is
* active
*/
while ((TPM_TIS_IS_VALID_LOCTY(tis->active_locty) &&
locty > tis->active_locty) ||
!TPM_TIS_IS_VALID_LOCTY(tis->active_locty)) {
while ((TPM_TIS_IS_VALID_LOCTY(s->active_locty) &&
locty > s->active_locty) ||
!TPM_TIS_IS_VALID_LOCTY(s->active_locty)) {
bool higher_seize = FALSE;
/* already a pending SEIZE ? */
if ((tis->loc[locty].access & TPM_TIS_ACCESS_SEIZE)) {
if ((s->loc[locty].access & TPM_TIS_ACCESS_SEIZE)) {
break;
}
/* check for ongoing seize by a higher locality */
for (l = locty + 1; l < TPM_TIS_NUM_LOCALITIES; l++) {
if ((tis->loc[l].access & TPM_TIS_ACCESS_SEIZE)) {
if ((s->loc[l].access & TPM_TIS_ACCESS_SEIZE)) {
higher_seize = TRUE;
break;
}
@ -780,24 +761,24 @@ static void tpm_tis_mmio_write(void *opaque, hwaddr addr,
/* cancel any seize by a lower locality */
for (l = 0; l < locty - 1; l++) {
tis->loc[l].access &= ~TPM_TIS_ACCESS_SEIZE;
s->loc[l].access &= ~TPM_TIS_ACCESS_SEIZE;
}
tis->loc[locty].access |= TPM_TIS_ACCESS_SEIZE;
s->loc[locty].access |= TPM_TIS_ACCESS_SEIZE;
DPRINTF("tpm_tis: TPM_TIS_ACCESS_SEIZE: "
"Locality %d seized from locality %d\n",
locty, tis->active_locty);
locty, s->active_locty);
DPRINTF("tpm_tis: TPM_TIS_ACCESS_SEIZE: Initiating abort.\n");
set_new_locty = 0;
tpm_tis_prep_abort(s, tis->active_locty, locty);
tpm_tis_prep_abort(s, s->active_locty, locty);
break;
}
}
if ((val & TPM_TIS_ACCESS_REQUEST_USE)) {
if (tis->active_locty != locty) {
if (TPM_TIS_IS_VALID_LOCTY(tis->active_locty)) {
tis->loc[locty].access |= TPM_TIS_ACCESS_REQUEST_USE;
if (s->active_locty != locty) {
if (TPM_TIS_IS_VALID_LOCTY(s->active_locty)) {
s->loc[locty].access |= TPM_TIS_ACCESS_REQUEST_USE;
} else {
/* no locality active -> make this one active now */
active_locty = locty;
@ -811,12 +792,12 @@ static void tpm_tis_mmio_write(void *opaque, hwaddr addr,
break;
case TPM_TIS_REG_INT_ENABLE:
if (tis->active_locty != locty) {
if (s->active_locty != locty) {
break;
}
tis->loc[locty].inte &= mask;
tis->loc[locty].inte |= (val & (TPM_TIS_INT_ENABLED |
s->loc[locty].inte &= mask;
s->loc[locty].inte |= (val & (TPM_TIS_INT_ENABLED |
TPM_TIS_INT_POLARITY_MASK |
TPM_TIS_INTERRUPTS_SUPPORTED));
break;
@ -824,30 +805,30 @@ static void tpm_tis_mmio_write(void *opaque, hwaddr addr,
/* hard wired -- ignore */
break;
case TPM_TIS_REG_INT_STATUS:
if (tis->active_locty != locty) {
if (s->active_locty != locty) {
break;
}
/* clearing of interrupt flags */
if (((val & TPM_TIS_INTERRUPTS_SUPPORTED)) &&
(tis->loc[locty].ints & TPM_TIS_INTERRUPTS_SUPPORTED)) {
tis->loc[locty].ints &= ~val;
if (tis->loc[locty].ints == 0) {
qemu_irq_lower(tis->irq);
(s->loc[locty].ints & TPM_TIS_INTERRUPTS_SUPPORTED)) {
s->loc[locty].ints &= ~val;
if (s->loc[locty].ints == 0) {
qemu_irq_lower(s->irq);
DPRINTF("tpm_tis: Lowering IRQ\n");
}
}
tis->loc[locty].ints &= ~(val & TPM_TIS_INTERRUPTS_SUPPORTED);
s->loc[locty].ints &= ~(val & TPM_TIS_INTERRUPTS_SUPPORTED);
break;
case TPM_TIS_REG_STS:
if (tis->active_locty != locty) {
if (s->active_locty != locty) {
break;
}
if (s->be_tpm_version == TPM_VERSION_2_0) {
/* some flags that are only supported for TPM 2 */
if (val & TPM_TIS_STS_COMMAND_CANCEL) {
if (tis->loc[locty].state == TPM_TIS_STATE_EXECUTION) {
if (s->loc[locty].state == TPM_TIS_STATE_EXECUTION) {
/*
* request the backend to cancel. Some backends may not
* support it
@ -867,16 +848,16 @@ static void tpm_tis_mmio_write(void *opaque, hwaddr addr,
TPM_TIS_STS_RESPONSE_RETRY);
if (val == TPM_TIS_STS_COMMAND_READY) {
switch (tis->loc[locty].state) {
switch (s->loc[locty].state) {
case TPM_TIS_STATE_READY:
tis->loc[locty].w_offset = 0;
tis->loc[locty].r_offset = 0;
s->loc[locty].w_offset = 0;
s->loc[locty].r_offset = 0;
break;
case TPM_TIS_STATE_IDLE:
tpm_tis_sts_set(&tis->loc[locty], TPM_TIS_STS_COMMAND_READY);
tis->loc[locty].state = TPM_TIS_STATE_READY;
tpm_tis_sts_set(&s->loc[locty], TPM_TIS_STS_COMMAND_READY);
s->loc[locty].state = TPM_TIS_STATE_READY;
tpm_tis_raise_irq(s, locty, TPM_TIS_INT_COMMAND_READY);
break;
@ -889,23 +870,23 @@ static void tpm_tis_mmio_write(void *opaque, hwaddr addr,
break;
case TPM_TIS_STATE_COMPLETION:
tis->loc[locty].w_offset = 0;
tis->loc[locty].r_offset = 0;
s->loc[locty].w_offset = 0;
s->loc[locty].r_offset = 0;
/* shortcut to ready state with C/R set */
tis->loc[locty].state = TPM_TIS_STATE_READY;
if (!(tis->loc[locty].sts & TPM_TIS_STS_COMMAND_READY)) {
tpm_tis_sts_set(&tis->loc[locty],
s->loc[locty].state = TPM_TIS_STATE_READY;
if (!(s->loc[locty].sts & TPM_TIS_STS_COMMAND_READY)) {
tpm_tis_sts_set(&s->loc[locty],
TPM_TIS_STS_COMMAND_READY);
tpm_tis_raise_irq(s, locty, TPM_TIS_INT_COMMAND_READY);
}
tis->loc[locty].sts &= ~(TPM_TIS_STS_DATA_AVAILABLE);
s->loc[locty].sts &= ~(TPM_TIS_STS_DATA_AVAILABLE);
break;
}
} else if (val == TPM_TIS_STS_TPM_GO) {
switch (tis->loc[locty].state) {
switch (s->loc[locty].state) {
case TPM_TIS_STATE_RECEPTION:
if ((tis->loc[locty].sts & TPM_TIS_STS_EXPECT) == 0) {
if ((s->loc[locty].sts & TPM_TIS_STS_EXPECT) == 0) {
tpm_tis_tpm_send(s, locty);
}
break;
@ -914,10 +895,10 @@ static void tpm_tis_mmio_write(void *opaque, hwaddr addr,
break;
}
} else if (val == TPM_TIS_STS_RESPONSE_RETRY) {
switch (tis->loc[locty].state) {
switch (s->loc[locty].state) {
case TPM_TIS_STATE_COMPLETION:
tis->loc[locty].r_offset = 0;
tpm_tis_sts_set(&tis->loc[locty],
s->loc[locty].r_offset = 0;
tpm_tis_sts_set(&s->loc[locty],
TPM_TIS_STS_VALID|
TPM_TIS_STS_DATA_AVAILABLE);
break;
@ -930,20 +911,20 @@ static void tpm_tis_mmio_write(void *opaque, hwaddr addr,
case TPM_TIS_REG_DATA_FIFO:
case TPM_TIS_REG_DATA_XFIFO ... TPM_TIS_REG_DATA_XFIFO_END:
/* data fifo */
if (tis->active_locty != locty) {
if (s->active_locty != locty) {
break;
}
if (tis->loc[locty].state == TPM_TIS_STATE_IDLE ||
tis->loc[locty].state == TPM_TIS_STATE_EXECUTION ||
tis->loc[locty].state == TPM_TIS_STATE_COMPLETION) {
if (s->loc[locty].state == TPM_TIS_STATE_IDLE ||
s->loc[locty].state == TPM_TIS_STATE_EXECUTION ||
s->loc[locty].state == TPM_TIS_STATE_COMPLETION) {
/* drop the byte */
} else {
DPRINTF("tpm_tis: Data to send to TPM: %08x (size=%d)\n",
(int)val, size);
if (tis->loc[locty].state == TPM_TIS_STATE_READY) {
tis->loc[locty].state = TPM_TIS_STATE_RECEPTION;
tpm_tis_sts_set(&tis->loc[locty],
if (s->loc[locty].state == TPM_TIS_STATE_READY) {
s->loc[locty].state = TPM_TIS_STATE_RECEPTION;
tpm_tis_sts_set(&s->loc[locty],
TPM_TIS_STS_EXPECT | TPM_TIS_STS_VALID);
}
@ -953,30 +934,30 @@ static void tpm_tis_mmio_write(void *opaque, hwaddr addr,
size = 4 - (addr & 0x3);
}
while ((tis->loc[locty].sts & TPM_TIS_STS_EXPECT) && size > 0) {
if (tis->loc[locty].w_offset < tis->loc[locty].w_buffer.size) {
tis->loc[locty].w_buffer.
buffer[tis->loc[locty].w_offset++] = (uint8_t)val;
while ((s->loc[locty].sts & TPM_TIS_STS_EXPECT) && size > 0) {
if (s->loc[locty].w_offset < s->loc[locty].w_buffer.size) {
s->loc[locty].w_buffer.
buffer[s->loc[locty].w_offset++] = (uint8_t)val;
val >>= 8;
size--;
} else {
tpm_tis_sts_set(&tis->loc[locty], TPM_TIS_STS_VALID);
tpm_tis_sts_set(&s->loc[locty], TPM_TIS_STS_VALID);
}
}
/* check for complete packet */
if (tis->loc[locty].w_offset > 5 &&
(tis->loc[locty].sts & TPM_TIS_STS_EXPECT)) {
if (s->loc[locty].w_offset > 5 &&
(s->loc[locty].sts & TPM_TIS_STS_EXPECT)) {
/* we have a packet length - see if we have all of it */
bool need_irq = !(tis->loc[locty].sts & TPM_TIS_STS_VALID);
bool need_irq = !(s->loc[locty].sts & TPM_TIS_STS_VALID);
len = tpm_tis_get_size_from_buffer(&tis->loc[locty].w_buffer);
if (len > tis->loc[locty].w_offset) {
tpm_tis_sts_set(&tis->loc[locty],
len = tpm_tis_get_size_from_buffer(&s->loc[locty].w_buffer);
if (len > s->loc[locty].w_offset) {
tpm_tis_sts_set(&s->loc[locty],
TPM_TIS_STS_EXPECT | TPM_TIS_STS_VALID);
} else {
/* packet complete */
tpm_tis_sts_set(&tis->loc[locty], TPM_TIS_STS_VALID);
tpm_tis_sts_set(&s->loc[locty], TPM_TIS_STS_VALID);
}
if (need_irq) {
tpm_tis_raise_irq(s, locty, TPM_TIS_INT_STS_VALID);
@ -987,7 +968,7 @@ static void tpm_tis_mmio_write(void *opaque, hwaddr addr,
case TPM_TIS_REG_INTERFACE_ID:
if (val & TPM_TIS_IFACE_ID_INT_SEL_LOCK) {
for (l = 0; l < TPM_TIS_NUM_LOCALITIES; l++) {
tis->loc[l].iface_id |= TPM_TIS_IFACE_ID_INT_SEL_LOCK;
s->loc[l].iface_id |= TPM_TIS_IFACE_ID_INT_SEL_LOCK;
}
}
break;
@ -1036,39 +1017,38 @@ TPMVersion tpm_tis_get_tpm_version(Object *obj)
static void tpm_tis_reset(DeviceState *dev)
{
TPMState *s = TPM(dev);
TPMTISEmuState *tis = &s->s.tis;
int c;
s->be_tpm_version = tpm_backend_get_tpm_version(s->be_driver);
tpm_backend_reset(s->be_driver);
tis->active_locty = TPM_TIS_NO_LOCALITY;
tis->next_locty = TPM_TIS_NO_LOCALITY;
tis->aborting_locty = TPM_TIS_NO_LOCALITY;
s->active_locty = TPM_TIS_NO_LOCALITY;
s->next_locty = TPM_TIS_NO_LOCALITY;
s->aborting_locty = TPM_TIS_NO_LOCALITY;
for (c = 0; c < TPM_TIS_NUM_LOCALITIES; c++) {
tis->loc[c].access = TPM_TIS_ACCESS_TPM_REG_VALID_STS;
s->loc[c].access = TPM_TIS_ACCESS_TPM_REG_VALID_STS;
switch (s->be_tpm_version) {
case TPM_VERSION_UNSPEC:
break;
case TPM_VERSION_1_2:
tis->loc[c].sts = TPM_TIS_STS_TPM_FAMILY1_2;
tis->loc[c].iface_id = TPM_TIS_IFACE_ID_SUPPORTED_FLAGS1_3;
s->loc[c].sts = TPM_TIS_STS_TPM_FAMILY1_2;
s->loc[c].iface_id = TPM_TIS_IFACE_ID_SUPPORTED_FLAGS1_3;
break;
case TPM_VERSION_2_0:
tis->loc[c].sts = TPM_TIS_STS_TPM_FAMILY2_0;
tis->loc[c].iface_id = TPM_TIS_IFACE_ID_SUPPORTED_FLAGS2_0;
s->loc[c].sts = TPM_TIS_STS_TPM_FAMILY2_0;
s->loc[c].iface_id = TPM_TIS_IFACE_ID_SUPPORTED_FLAGS2_0;
break;
}
tis->loc[c].inte = TPM_TIS_INT_POLARITY_LOW_LEVEL;
tis->loc[c].ints = 0;
tis->loc[c].state = TPM_TIS_STATE_IDLE;
s->loc[c].inte = TPM_TIS_INT_POLARITY_LOW_LEVEL;
s->loc[c].ints = 0;
s->loc[c].state = TPM_TIS_STATE_IDLE;
tis->loc[c].w_offset = 0;
tpm_tis_realloc_buffer(&tis->loc[c].w_buffer);
tis->loc[c].r_offset = 0;
tpm_tis_realloc_buffer(&tis->loc[c].r_buffer);
s->loc[c].w_offset = 0;
tpm_tis_realloc_buffer(&s->loc[c].w_buffer);
s->loc[c].r_offset = 0;
tpm_tis_realloc_buffer(&s->loc[c].r_buffer);
}
tpm_tis_do_startup_tpm(s);
@ -1080,8 +1060,7 @@ static const VMStateDescription vmstate_tpm_tis = {
};
static Property tpm_tis_properties[] = {
DEFINE_PROP_UINT32("irq", TPMState,
s.tis.irq_num, TPM_TIS_IRQ),
DEFINE_PROP_UINT32("irq", TPMState, irq_num, TPM_TIS_IRQ),
DEFINE_PROP_STRING("tpmdev", TPMState, backend),
DEFINE_PROP_END_OF_LIST(),
};
@ -1089,7 +1068,6 @@ static Property tpm_tis_properties[] = {
static void tpm_tis_realizefn(DeviceState *dev, Error **errp)
{
TPMState *s = TPM(dev);
TPMTISEmuState *tis = &s->s.tis;
s->be_driver = qemu_find_tpm(s->backend);
if (!s->be_driver) {
@ -1106,15 +1084,15 @@ static void tpm_tis_realizefn(DeviceState *dev, Error **errp)
return;
}
if (tis->irq_num > 15) {
if (s->irq_num > 15) {
error_setg(errp, "tpm_tis: IRQ %d for TPM TIS is outside valid range "
"of 0 to 15", tis->irq_num);
"of 0 to 15", s->irq_num);
return;
}
tis->bh = qemu_bh_new(tpm_tis_receive_bh, s);
s->bh = qemu_bh_new(tpm_tis_receive_bh, s);
isa_init_irq(&s->busdev, &tis->irq, tis->irq_num);
isa_init_irq(&s->busdev, &s->irq, s->irq_num);
memory_region_add_subregion(isa_address_space(ISA_DEVICE(dev)),
TPM_TIS_ADDR_BASE, &s->mmio);