aboutsummaryrefslogtreecommitdiff
path: root/hw/intc/xive.c
diff options
context:
space:
mode:
Diffstat (limited to 'hw/intc/xive.c')
-rw-r--r--hw/intc/xive.c398
1 files changed, 214 insertions, 184 deletions
diff --git a/hw/intc/xive.c b/hw/intc/xive.c
index 75dce82..d4c6e21 100644
--- a/hw/intc/xive.c
+++ b/hw/intc/xive.c
@@ -47,12 +47,6 @@ static uint8_t ipb_to_pipr(uint8_t ibp)
return ibp ? clz32((uint32_t)ibp << 24) : 0xff;
}
-static void ipb_update(uint8_t *regs, uint8_t priority)
-{
- regs[TM_IPB] |= priority_to_ipb(priority);
- regs[TM_PIPR] = ipb_to_pipr(regs[TM_IPB]);
-}
-
static uint8_t exception_mask(uint8_t ring)
{
switch (ring) {
@@ -135,6 +129,15 @@ static void xive_tctx_set_cppr(XiveTCTX *tctx, uint8_t ring, uint8_t cppr)
xive_tctx_notify(tctx, ring);
}
+void xive_tctx_ipb_update(XiveTCTX *tctx, uint8_t ring, uint8_t ipb)
+{
+ uint8_t *regs = &tctx->regs[ring];
+
+ regs[TM_IPB] |= ipb;
+ regs[TM_PIPR] = ipb_to_pipr(regs[TM_IPB]);
+ xive_tctx_notify(tctx, ring);
+}
+
static inline uint32_t xive_tctx_word2(uint8_t *ring)
{
return *((uint32_t *) &ring[TM_WORD2]);
@@ -144,19 +147,20 @@ static inline uint32_t xive_tctx_word2(uint8_t *ring)
* XIVE Thread Interrupt Management Area (TIMA)
*/
-static void xive_tm_set_hv_cppr(XiveTCTX *tctx, hwaddr offset,
- uint64_t value, unsigned size)
+static void xive_tm_set_hv_cppr(XivePresenter *xptr, XiveTCTX *tctx,
+ hwaddr offset, uint64_t value, unsigned size)
{
xive_tctx_set_cppr(tctx, TM_QW3_HV_PHYS, value & 0xff);
}
-static uint64_t xive_tm_ack_hv_reg(XiveTCTX *tctx, hwaddr offset, unsigned size)
+static uint64_t xive_tm_ack_hv_reg(XivePresenter *xptr, XiveTCTX *tctx,
+ hwaddr offset, unsigned size)
{
return xive_tctx_accept(tctx, TM_QW3_HV_PHYS);
}
-static uint64_t xive_tm_pull_pool_ctx(XiveTCTX *tctx, hwaddr offset,
- unsigned size)
+static uint64_t xive_tm_pull_pool_ctx(XivePresenter *xptr, XiveTCTX *tctx,
+ hwaddr offset, unsigned size)
{
uint32_t qw2w2_prev = xive_tctx_word2(&tctx->regs[TM_QW2_HV_POOL]);
uint32_t qw2w2;
@@ -166,13 +170,14 @@ static uint64_t xive_tm_pull_pool_ctx(XiveTCTX *tctx, hwaddr offset,
return qw2w2;
}
-static void xive_tm_vt_push(XiveTCTX *tctx, hwaddr offset,
+static void xive_tm_vt_push(XivePresenter *xptr, XiveTCTX *tctx, hwaddr offset,
uint64_t value, unsigned size)
{
tctx->regs[TM_QW3_HV_PHYS + TM_WORD2] = value & 0xff;
}
-static uint64_t xive_tm_vt_poll(XiveTCTX *tctx, hwaddr offset, unsigned size)
+static uint64_t xive_tm_vt_poll(XivePresenter *xptr, XiveTCTX *tctx,
+ hwaddr offset, unsigned size)
{
return tctx->regs[TM_QW3_HV_PHYS + TM_WORD2] & 0xff;
}
@@ -315,13 +320,14 @@ static uint64_t xive_tm_raw_read(XiveTCTX *tctx, hwaddr offset, unsigned size)
* state changes (side effects) in addition to setting/returning the
* interrupt management area context of the processor thread.
*/
-static uint64_t xive_tm_ack_os_reg(XiveTCTX *tctx, hwaddr offset, unsigned size)
+static uint64_t xive_tm_ack_os_reg(XivePresenter *xptr, XiveTCTX *tctx,
+ hwaddr offset, unsigned size)
{
return xive_tctx_accept(tctx, TM_QW1_OS);
}
-static void xive_tm_set_os_cppr(XiveTCTX *tctx, hwaddr offset,
- uint64_t value, unsigned size)
+static void xive_tm_set_os_cppr(XivePresenter *xptr, XiveTCTX *tctx,
+ hwaddr offset, uint64_t value, unsigned size)
{
xive_tctx_set_cppr(tctx, TM_QW1_OS, value & 0xff);
}
@@ -330,24 +336,114 @@ static void xive_tm_set_os_cppr(XiveTCTX *tctx, hwaddr offset,
* Adjust the IPB to allow a CPU to process event queues of other
* priorities during one physical interrupt cycle.
*/
-static void xive_tm_set_os_pending(XiveTCTX *tctx, hwaddr offset,
- uint64_t value, unsigned size)
+static void xive_tm_set_os_pending(XivePresenter *xptr, XiveTCTX *tctx,
+ hwaddr offset, uint64_t value, unsigned size)
{
- ipb_update(&tctx->regs[TM_QW1_OS], value & 0xff);
- xive_tctx_notify(tctx, TM_QW1_OS);
+ xive_tctx_ipb_update(tctx, TM_QW1_OS, priority_to_ipb(value & 0xff));
}
-static uint64_t xive_tm_pull_os_ctx(XiveTCTX *tctx, hwaddr offset,
- unsigned size)
+static void xive_os_cam_decode(uint32_t cam, uint8_t *nvt_blk,
+ uint32_t *nvt_idx, bool *vo)
{
- uint32_t qw1w2_prev = xive_tctx_word2(&tctx->regs[TM_QW1_OS]);
- uint32_t qw1w2;
+ if (nvt_blk) {
+ *nvt_blk = xive_nvt_blk(cam);
+ }
+ if (nvt_idx) {
+ *nvt_idx = xive_nvt_idx(cam);
+ }
+ if (vo) {
+ *vo = !!(cam & TM_QW1W2_VO);
+ }
+}
+
+static uint32_t xive_tctx_get_os_cam(XiveTCTX *tctx, uint8_t *nvt_blk,
+ uint32_t *nvt_idx, bool *vo)
+{
+ uint32_t qw1w2 = xive_tctx_word2(&tctx->regs[TM_QW1_OS]);
+ uint32_t cam = be32_to_cpu(qw1w2);
- qw1w2 = xive_set_field32(TM_QW1W2_VO, qw1w2_prev, 0);
+ xive_os_cam_decode(cam, nvt_blk, nvt_idx, vo);
+ return qw1w2;
+}
+
+static void xive_tctx_set_os_cam(XiveTCTX *tctx, uint32_t qw1w2)
+{
memcpy(&tctx->regs[TM_QW1_OS + TM_WORD2], &qw1w2, 4);
+}
+
+static uint64_t xive_tm_pull_os_ctx(XivePresenter *xptr, XiveTCTX *tctx,
+ hwaddr offset, unsigned size)
+{
+ uint32_t qw1w2;
+ uint32_t qw1w2_new;
+ uint8_t nvt_blk;
+ uint32_t nvt_idx;
+ bool vo;
+
+ qw1w2 = xive_tctx_get_os_cam(tctx, &nvt_blk, &nvt_idx, &vo);
+
+ if (!vo) {
+ qemu_log_mask(LOG_GUEST_ERROR, "XIVE: pulling invalid NVT %x/%x !?\n",
+ nvt_blk, nvt_idx);
+ }
+
+ /* Invalidate CAM line */
+ qw1w2_new = xive_set_field32(TM_QW1W2_VO, qw1w2, 0);
+ xive_tctx_set_os_cam(tctx, qw1w2_new);
return qw1w2;
}
+static void xive_tctx_need_resend(XiveRouter *xrtr, XiveTCTX *tctx,
+ uint8_t nvt_blk, uint32_t nvt_idx)
+{
+ XiveNVT nvt;
+ uint8_t ipb;
+
+ /*
+ * Grab the associated NVT to pull the pending bits, and merge
+ * them with the IPB of the thread interrupt context registers
+ */
+ if (xive_router_get_nvt(xrtr, nvt_blk, nvt_idx, &nvt)) {
+ qemu_log_mask(LOG_GUEST_ERROR, "XIVE: invalid NVT %x/%x\n",
+ nvt_blk, nvt_idx);
+ return;
+ }
+
+ ipb = xive_get_field32(NVT_W4_IPB, nvt.w4);
+
+ if (ipb) {
+ /* Reset the NVT value */
+ nvt.w4 = xive_set_field32(NVT_W4_IPB, nvt.w4, 0);
+ xive_router_write_nvt(xrtr, nvt_blk, nvt_idx, &nvt, 4);
+
+ /* Merge in current context */
+ xive_tctx_ipb_update(tctx, TM_QW1_OS, ipb);
+ }
+}
+
+/*
+ * Updating the OS CAM line can trigger a resend of interrupt
+ */
+static void xive_tm_push_os_ctx(XivePresenter *xptr, XiveTCTX *tctx,
+ hwaddr offset, uint64_t value, unsigned size)
+{
+ uint32_t cam = value;
+ uint32_t qw1w2 = cpu_to_be32(cam);
+ uint8_t nvt_blk;
+ uint32_t nvt_idx;
+ bool vo;
+
+ xive_os_cam_decode(cam, &nvt_blk, &nvt_idx, &vo);
+
+ /* First update the registers */
+ xive_tctx_set_os_cam(tctx, qw1w2);
+
+ /* Check the interrupt pending bits */
+ if (vo) {
+ xive_tctx_need_resend(XIVE_ROUTER(xptr), tctx, nvt_blk, nvt_idx);
+ }
+}
+
/*
* Define a mapping of "special" operations depending on the TIMA page
* offset and the size of the operation.
@@ -356,9 +452,11 @@ typedef struct XiveTmOp {
uint8_t page_offset;
uint32_t op_offset;
unsigned size;
- void (*write_handler)(XiveTCTX *tctx, hwaddr offset, uint64_t value,
- unsigned size);
- uint64_t (*read_handler)(XiveTCTX *tctx, hwaddr offset, unsigned size);
+ void (*write_handler)(XivePresenter *xptr, XiveTCTX *tctx,
+ hwaddr offset,
+ uint64_t value, unsigned size);
+ uint64_t (*read_handler)(XivePresenter *xptr, XiveTCTX *tctx, hwaddr offset,
+ unsigned size);
} XiveTmOp;
static const XiveTmOp xive_tm_operations[] = {
@@ -367,6 +465,7 @@ static const XiveTmOp xive_tm_operations[] = {
* effects
*/
{ XIVE_TM_OS_PAGE, TM_QW1_OS + TM_CPPR, 1, xive_tm_set_os_cppr, NULL },
+ { XIVE_TM_HV_PAGE, TM_QW1_OS + TM_WORD2, 4, xive_tm_push_os_ctx, NULL },
{ XIVE_TM_HV_PAGE, TM_QW3_HV_PHYS + TM_CPPR, 1, xive_tm_set_hv_cppr, NULL },
{ XIVE_TM_HV_PAGE, TM_QW3_HV_PHYS + TM_WORD2, 1, xive_tm_vt_push, NULL },
{ XIVE_TM_HV_PAGE, TM_QW3_HV_PHYS + TM_WORD2, 1, NULL, xive_tm_vt_poll },
@@ -404,8 +503,8 @@ static const XiveTmOp *xive_tm_find_op(hwaddr offset, unsigned size, bool write)
/*
* TIMA MMIO handlers
*/
-void xive_tctx_tm_write(XiveTCTX *tctx, hwaddr offset, uint64_t value,
- unsigned size)
+void xive_tctx_tm_write(XivePresenter *xptr, XiveTCTX *tctx, hwaddr offset,
+ uint64_t value, unsigned size)
{
const XiveTmOp *xto;
@@ -422,7 +521,7 @@ void xive_tctx_tm_write(XiveTCTX *tctx, hwaddr offset, uint64_t value,
qemu_log_mask(LOG_GUEST_ERROR, "XIVE: invalid write access at TIMA "
"@%"HWADDR_PRIx"\n", offset);
} else {
- xto->write_handler(tctx, offset, value, size);
+ xto->write_handler(xptr, tctx, offset, value, size);
}
return;
}
@@ -432,7 +531,7 @@ void xive_tctx_tm_write(XiveTCTX *tctx, hwaddr offset, uint64_t value,
*/
xto = xive_tm_find_op(offset, size, true);
if (xto) {
- xto->write_handler(tctx, offset, value, size);
+ xto->write_handler(xptr, tctx, offset, value, size);
return;
}
@@ -442,7 +541,8 @@ void xive_tctx_tm_write(XiveTCTX *tctx, hwaddr offset, uint64_t value,
xive_tm_raw_write(tctx, offset, value, size);
}
-uint64_t xive_tctx_tm_read(XiveTCTX *tctx, hwaddr offset, unsigned size)
+uint64_t xive_tctx_tm_read(XivePresenter *xptr, XiveTCTX *tctx, hwaddr offset,
+ unsigned size)
{
const XiveTmOp *xto;
@@ -460,7 +560,7 @@ uint64_t xive_tctx_tm_read(XiveTCTX *tctx, hwaddr offset, unsigned size)
"@%"HWADDR_PRIx"\n", offset);
return -1;
}
- return xto->read_handler(tctx, offset, size);
+ return xto->read_handler(xptr, tctx, offset, size);
}
/*
@@ -468,7 +568,7 @@ uint64_t xive_tctx_tm_read(XiveTCTX *tctx, hwaddr offset, unsigned size)
*/
xto = xive_tm_find_op(offset, size, false);
if (xto) {
- return xto->read_handler(tctx, offset, size);
+ return xto->read_handler(xptr, tctx, offset, size);
}
/*
@@ -477,35 +577,6 @@ uint64_t xive_tctx_tm_read(XiveTCTX *tctx, hwaddr offset, unsigned size)
return xive_tm_raw_read(tctx, offset, size);
}
-static void xive_tm_write(void *opaque, hwaddr offset,
- uint64_t value, unsigned size)
-{
- XiveTCTX *tctx = xive_router_get_tctx(XIVE_ROUTER(opaque), current_cpu);
-
- xive_tctx_tm_write(tctx, offset, value, size);
-}
-
-static uint64_t xive_tm_read(void *opaque, hwaddr offset, unsigned size)
-{
- XiveTCTX *tctx = xive_router_get_tctx(XIVE_ROUTER(opaque), current_cpu);
-
- return xive_tctx_tm_read(tctx, offset, size);
-}
-
-const MemoryRegionOps xive_tm_ops = {
- .read = xive_tm_read,
- .write = xive_tm_write,
- .endianness = DEVICE_BIG_ENDIAN,
- .valid = {
- .min_access_size = 1,
- .max_access_size = 8,
- },
- .impl = {
- .min_access_size = 1,
- .max_access_size = 8,
- },
-};
-
static char *xive_tctx_ring_print(uint8_t *ring)
{
uint32_t w2 = xive_tctx_word2(ring);
@@ -580,19 +651,11 @@ static void xive_tctx_realize(DeviceState *dev, Error **errp)
XiveTCTX *tctx = XIVE_TCTX(dev);
PowerPCCPU *cpu;
CPUPPCState *env;
- Object *obj;
Error *local_err = NULL;
- obj = object_property_get_link(OBJECT(dev), "cpu", &local_err);
- if (!obj) {
- error_propagate(errp, local_err);
- error_prepend(errp, "required link 'cpu' not found: ");
- return;
- }
-
- cpu = POWERPC_CPU(obj);
- tctx->cs = CPU(obj);
+ assert(tctx->cs);
+ cpu = POWERPC_CPU(tctx->cs);
env = &cpu->env;
switch (PPC_INPUT(env)) {
case PPC_FLAGS_INPUT_POWER9:
@@ -662,6 +725,11 @@ static const VMStateDescription vmstate_xive_tctx = {
},
};
+static Property xive_tctx_properties[] = {
+ DEFINE_PROP_LINK("cpu", XiveTCTX, cs, TYPE_CPU, CPUState *),
+ DEFINE_PROP_END_OF_LIST(),
+};
+
static void xive_tctx_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
@@ -669,6 +737,7 @@ static void xive_tctx_class_init(ObjectClass *klass, void *data)
dc->desc = "XIVE Interrupt Thread Context";
dc->realize = xive_tctx_realize;
dc->vmsd = &vmstate_xive_tctx;
+ dc->props = xive_tctx_properties;
/*
* Reason: part of XIVE interrupt controller, needs to be wired up
* by xive_tctx_create().
@@ -691,8 +760,7 @@ Object *xive_tctx_create(Object *cpu, XiveRouter *xrtr, Error **errp)
obj = object_new(TYPE_XIVE_TCTX);
object_property_add_child(cpu, TYPE_XIVE_TCTX, obj, &error_abort);
object_unref(obj);
- object_ref(cpu);
- object_property_add_const_link(obj, "cpu", cpu, &error_abort);
+ object_property_set_link(obj, cpu, "cpu", &error_abort);
object_property_set_bool(obj, true, "realized", &local_err);
if (local_err) {
goto error;
@@ -710,7 +778,6 @@ void xive_tctx_destroy(XiveTCTX *tctx)
{
Object *obj = OBJECT(tctx);
- object_unref(object_property_get_link(obj, "cpu", &error_abort));
object_unparent(obj);
}
@@ -1064,17 +1131,8 @@ static void xive_source_reset(void *dev)
static void xive_source_realize(DeviceState *dev, Error **errp)
{
XiveSource *xsrc = XIVE_SOURCE(dev);
- Object *obj;
- Error *local_err = NULL;
- obj = object_property_get_link(OBJECT(dev), "xive", &local_err);
- if (!obj) {
- error_propagate(errp, local_err);
- error_prepend(errp, "required link 'xive' not found: ");
- return;
- }
-
- xsrc->xive = XIVE_NOTIFIER(obj);
+ assert(xsrc->xive);
if (!xsrc->nr_irqs) {
error_setg(errp, "Number of interrupt needs to be greater than 0");
@@ -1120,6 +1178,8 @@ static Property xive_source_properties[] = {
DEFINE_PROP_UINT64("flags", XiveSource, esb_flags, 0),
DEFINE_PROP_UINT32("nr-irqs", XiveSource, nr_irqs, 0),
DEFINE_PROP_UINT32("shift", XiveSource, esb_shift, XIVE_ESB_64K_2PAGE),
+ DEFINE_PROP_LINK("xive", XiveSource, xive, TYPE_XIVE_NOTIFIER,
+ XiveNotifier *),
DEFINE_PROP_END_OF_LIST(),
};
@@ -1311,11 +1371,11 @@ int xive_router_write_nvt(XiveRouter *xrtr, uint8_t nvt_blk, uint32_t nvt_idx,
return xrc->write_nvt(xrtr, nvt_blk, nvt_idx, nvt, word_number);
}
-XiveTCTX *xive_router_get_tctx(XiveRouter *xrtr, CPUState *cs)
+static int xive_router_get_block_id(XiveRouter *xrtr)
{
- XiveRouterClass *xrc = XIVE_ROUTER_GET_CLASS(xrtr);
+ XiveRouterClass *xrc = XIVE_ROUTER_GET_CLASS(xrtr);
- return xrc->get_tctx(xrtr, cs);
+ return xrc->get_block_id(xrtr);
}
/*
@@ -1323,20 +1383,22 @@ XiveTCTX *xive_router_get_tctx(XiveRouter *xrtr, CPUState *cs)
*
* chip << 19 | 0000000 0 0001 thread (7Bit)
*/
-static uint32_t xive_tctx_hw_cam_line(XiveTCTX *tctx)
+static uint32_t xive_tctx_hw_cam_line(XivePresenter *xptr, XiveTCTX *tctx)
{
CPUPPCState *env = &POWERPC_CPU(tctx->cs)->env;
uint32_t pir = env->spr_cb[SPR_PIR].default_value;
+ uint8_t blk = xive_router_get_block_id(XIVE_ROUTER(xptr));
- return xive_nvt_cam_line((pir >> 8) & 0xf, 1 << 7 | (pir & 0x7f));
+ return xive_nvt_cam_line(blk, 1 << 7 | (pir & 0x7f));
}
/*
* The thread context register words are in big-endian format.
*/
-static int xive_presenter_tctx_match(XiveTCTX *tctx, uint8_t format,
- uint8_t nvt_blk, uint32_t nvt_idx,
- bool cam_ignore, uint32_t logic_serv)
+int xive_presenter_tctx_match(XivePresenter *xptr, XiveTCTX *tctx,
+ uint8_t format,
+ uint8_t nvt_blk, uint32_t nvt_idx,
+ bool cam_ignore, uint32_t logic_serv)
{
uint32_t cam = xive_nvt_cam_line(nvt_blk, nvt_idx);
uint32_t qw3w2 = xive_tctx_word2(&tctx->regs[TM_QW3_HV_PHYS]);
@@ -1364,7 +1426,7 @@ static int xive_presenter_tctx_match(XiveTCTX *tctx, uint8_t format,
/* PHYS ring */
if ((be32_to_cpu(qw3w2) & TM_QW3W2_VT) &&
- cam == xive_tctx_hw_cam_line(tctx)) {
+ cam == xive_tctx_hw_cam_line(xptr, tctx)) {
return TM_QW3_HV_PHYS;
}
@@ -1393,71 +1455,6 @@ static int xive_presenter_tctx_match(XiveTCTX *tctx, uint8_t format,
return -1;
}
-typedef struct XiveTCTXMatch {
- XiveTCTX *tctx;
- uint8_t ring;
-} XiveTCTXMatch;
-
-static bool xive_presenter_match(XiveRouter *xrtr, uint8_t format,
- uint8_t nvt_blk, uint32_t nvt_idx,
- bool cam_ignore, uint8_t priority,
- uint32_t logic_serv, XiveTCTXMatch *match)
-{
- CPUState *cs;
-
- /*
- * TODO (PowerNV): handle chip_id overwrite of block field for
- * hardwired CAM compares
- */
-
- CPU_FOREACH(cs) {
- XiveTCTX *tctx = xive_router_get_tctx(xrtr, cs);
- int ring;
-
- /*
- * Skip partially initialized vCPUs. This can happen when
- * vCPUs are hotplugged.
- */
- if (!tctx) {
- continue;
- }
-
- /*
- * HW checks that the CPU is enabled in the Physical Thread
- * Enable Register (PTER).
- */
-
- /*
- * Check the thread context CAM lines and record matches. We
- * will handle CPU exception delivery later
- */
- ring = xive_presenter_tctx_match(tctx, format, nvt_blk, nvt_idx,
- cam_ignore, logic_serv);
- /*
- * Save the context and follow on to catch duplicates, that we
- * don't support yet.
- */
- if (ring != -1) {
- if (match->tctx) {
- qemu_log_mask(LOG_GUEST_ERROR, "XIVE: already found a thread "
- "context NVT %x/%x\n", nvt_blk, nvt_idx);
- return false;
- }
-
- match->ring = ring;
- match->tctx = tctx;
- }
- }
-
- if (!match->tctx) {
- qemu_log_mask(LOG_UNIMP, "XIVE: NVT %x/%x is not dispatched\n",
- nvt_blk, nvt_idx);
- return false;
- }
-
- return true;
-}
-
/*
* This is our simple Xive Presenter Engine model. It is merged in the
* Router as it does not require an extra object.
@@ -1473,22 +1470,31 @@ static bool xive_presenter_match(XiveRouter *xrtr, uint8_t format,
*
* The parameters represent what is sent on the PowerBus
*/
-static bool xive_presenter_notify(XiveRouter *xrtr, uint8_t format,
+static bool xive_presenter_notify(uint8_t format,
uint8_t nvt_blk, uint32_t nvt_idx,
bool cam_ignore, uint8_t priority,
uint32_t logic_serv)
{
+ XiveFabric *xfb = XIVE_FABRIC(qdev_get_machine());
+ XiveFabricClass *xfc = XIVE_FABRIC_GET_CLASS(xfb);
XiveTCTXMatch match = { .tctx = NULL, .ring = 0 };
- bool found;
+ int count;
- found = xive_presenter_match(xrtr, format, nvt_blk, nvt_idx, cam_ignore,
- priority, logic_serv, &match);
- if (found) {
- ipb_update(&match.tctx->regs[match.ring], priority);
- xive_tctx_notify(match.tctx, match.ring);
+ /*
+ * Ask the machine to scan the interrupt controllers for a match
+ */
+ count = xfc->match_nvt(xfb, format, nvt_blk, nvt_idx, cam_ignore,
+ priority, logic_serv, &match);
+ if (count < 0) {
+ return false;
}
- return found;
+ /* handle CPU exception delivery */
+ if (count) {
+ xive_tctx_ipb_update(match.tctx, match.ring, priority_to_ipb(priority));
+ }
+
+ return !!count;
}
/*
@@ -1601,7 +1607,7 @@ static void xive_router_end_notify(XiveRouter *xrtr, uint8_t end_blk,
return;
}
- found = xive_presenter_notify(xrtr, format, nvt_blk, nvt_idx,
+ found = xive_presenter_notify(format, nvt_blk, nvt_idx,
xive_get_field32(END_W7_F0_IGNORE, end.w7),
priority,
xive_get_field32(END_W7_F1_LOG_SERVER_ID, end.w7));
@@ -1618,14 +1624,21 @@ static void xive_router_end_notify(XiveRouter *xrtr, uint8_t end_blk,
* - logical server : forward request to IVPE (not supported)
*/
if (xive_end_is_backlog(&end)) {
+ uint8_t ipb;
+
if (format == 1) {
qemu_log_mask(LOG_GUEST_ERROR,
"XIVE: END %x/%x invalid config: F1 & backlog\n",
end_blk, end_idx);
return;
}
- /* Record the IPB in the associated NVT structure */
- ipb_update((uint8_t *) &nvt.w4, priority);
+ /*
+ * Record the IPB in the associated NVT structure for later
+ * use. The presenter will resend the interrupt when the vCPU
+ * is dispatched again on a HW thread.
+ */
+ ipb = xive_get_field32(NVT_W4_IPB, nvt.w4) | priority_to_ipb(priority);
+ nvt.w4 = xive_set_field32(NVT_W4_IPB, nvt.w4, ipb);
xive_router_write_nvt(xrtr, nvt_blk, nvt_idx, &nvt, 4);
/*
@@ -1718,6 +1731,7 @@ static const TypeInfo xive_router_info = {
.class_init = xive_router_class_init,
.interfaces = (InterfaceInfo[]) {
{ TYPE_XIVE_NOTIFIER },
+ { TYPE_XIVE_PRESENTER },
{ }
}
};
@@ -1749,7 +1763,11 @@ static uint64_t xive_end_source_read(void *opaque, hwaddr addr, unsigned size)
uint8_t pq;
uint64_t ret = -1;
- end_blk = xsrc->block_id;
+ /*
+ * The block id should be deduced from the load address on the END
+ * ESB MMIO but our model only supports a single block per XIVE chip.
+ */
+ end_blk = xive_router_get_block_id(xsrc->xrtr);
end_idx = addr >> (xsrc->esb_shift + 1);
if (xive_router_get_end(xsrc->xrtr, end_blk, end_idx, &end)) {
@@ -1825,17 +1843,8 @@ static const MemoryRegionOps xive_end_source_ops = {
static void xive_end_source_realize(DeviceState *dev, Error **errp)
{
XiveENDSource *xsrc = XIVE_END_SOURCE(dev);
- Object *obj;
- Error *local_err = NULL;
- obj = object_property_get_link(OBJECT(dev), "xive", &local_err);
- if (!obj) {
- error_propagate(errp, local_err);
- error_prepend(errp, "required link 'xive' not found: ");
- return;
- }
-
- xsrc->xrtr = XIVE_ROUTER(obj);
+ assert(xsrc->xrtr);
if (!xsrc->nr_ends) {
error_setg(errp, "Number of interrupt needs to be greater than 0");
@@ -1858,9 +1867,10 @@ static void xive_end_source_realize(DeviceState *dev, Error **errp)
}
static Property xive_end_source_properties[] = {
- DEFINE_PROP_UINT8("block-id", XiveENDSource, block_id, 0),
DEFINE_PROP_UINT32("nr-ends", XiveENDSource, nr_ends, 0),
DEFINE_PROP_UINT32("shift", XiveENDSource, esb_shift, XIVE_ESB_64K),
+ DEFINE_PROP_LINK("xive", XiveENDSource, xrtr, TYPE_XIVE_ROUTER,
+ XiveRouter *),
DEFINE_PROP_END_OF_LIST(),
};
@@ -1894,10 +1904,30 @@ static const TypeInfo xive_notifier_info = {
.class_size = sizeof(XiveNotifierClass),
};
+/*
+ * XIVE Presenter
+ */
+static const TypeInfo xive_presenter_info = {
+ .name = TYPE_XIVE_PRESENTER,
+ .parent = TYPE_INTERFACE,
+ .class_size = sizeof(XivePresenterClass),
+};
+
+/*
+ * XIVE Fabric
+ */
+static const TypeInfo xive_fabric_info = {
+ .name = TYPE_XIVE_FABRIC,
+ .parent = TYPE_INTERFACE,
+ .class_size = sizeof(XiveFabricClass),
+};
+
static void xive_register_types(void)
{
+ type_register_static(&xive_fabric_info);
type_register_static(&xive_source_info);
type_register_static(&xive_notifier_info);
+ type_register_static(&xive_presenter_info);
type_register_static(&xive_router_info);
type_register_static(&xive_end_source_info);
type_register_static(&xive_tctx_info);
generated by cgit v1.1 at 2025-03-31 19:32:19 +0000