From: Nathan Fontenot <nf...@linux.vnet.ibm.com>
This add entries to the root OF node to advertise our PHBs as being
DR-capable in according with PAPR specification.
Each PHB is given a name of PHB<bus#>, advertised as a PHB type,
and associated with a power domain of -1 (indicating to guests that
power management is handled automatically by hardware).
We currently allocate entries for up to 32 DR-capable PHBs, though
this limit can be increased later.
DrcEntry objects to track the state of the DR-connector associated
with each PHB are stored in a 32-entry array, and each DrcEntry has
in turn have a dynamically-sized number of child DR-connectors,
which we will use later to track the state of DR-connectors
associated with a PHB's physical slots.
Signed-off-by: Nathan Fontenot <nf...@linux.vnet.ibm.com>
Signed-off-by: Michael Roth <mdr...@linux.vnet.ibm.com>
---
hw/ppc/spapr.c | 132 ++++++++++++++++++++++++++++++++++++++++++++++++
include/hw/ppc/spapr.h | 34 +++++++++++++
2 files changed, 166 insertions(+)
diff --git a/hw/ppc/spapr.c b/hw/ppc/spapr.c
index 7e53a5f..ec3ba43 100644
--- a/hw/ppc/spapr.c
+++ b/hw/ppc/spapr.c
@@ -81,6 +81,7 @@
#define HTAB_SIZE(spapr) (1ULL << ((spapr)->htab_shift))
sPAPREnvironment *spapr;
+DrcEntry drc_table[SPAPR_DRC_TABLE_SIZE];
int spapr_allocate_irq(int hint, bool lsi)
{
@@ -276,6 +277,130 @@ static size_t create_page_sizes_prop(CPUPPCState *env,
uint32_t *prop,
return (p - prop) * sizeof(uint32_t);
}
+static void spapr_init_drc_table(void)
+{
+ int i;
+
+ memset(drc_table, 0, sizeof(drc_table));
+
+ /* For now we only care about PHB entries */
+ for (i = 0; i < SPAPR_DRC_TABLE_SIZE; i++) {
+ drc_table[i].drc_index = 0x2000001 + i;
+ }
+}
+
+DrcEntry *spapr_add_phb_to_drc_table(uint64_t buid, uint32_t state)
+{
+ DrcEntry *empty_drc = NULL;
+ DrcEntry *found_drc = NULL;
+ int i, phb_index;
+
+ for (i = 0; i < SPAPR_DRC_TABLE_SIZE; i++) {
+ if (drc_table[i].phb_buid == 0) {
+ empty_drc = &drc_table[i];
+ }
+
+ if (drc_table[i].phb_buid == buid) {
+ found_drc = &drc_table[i];
+ break;
+ }
+ }
+
+ if (found_drc) {
+ return found_drc;
+ }
+
+ if (empty_drc) {
+ empty_drc->phb_buid = buid;
+ empty_drc->state = state;
+ empty_drc->cc_state.fdt = NULL;
+ empty_drc->cc_state.offset = 0;
+ empty_drc->cc_state.depth = 0;
+ empty_drc->cc_state.state = CC_STATE_IDLE;
+ empty_drc->child_entries =
+ g_malloc0(sizeof(DrcEntry) * SPAPR_DRC_PHB_SLOT_MAX);
+ phb_index = buid - SPAPR_PCI_BASE_BUID;
+ for (i = 0; i < SPAPR_DRC_PHB_SLOT_MAX; i++) {
+ empty_drc->child_entries[i].drc_index =
+ SPAPR_DRC_DEV_ID_BASE + (phb_index << 8) + (i << 3);
+ }
+ return empty_drc;
+ }
+
+ return NULL;
+}
+
+static void spapr_create_drc_dt_entries(void *fdt)
+{
+ char char_buf[1024];
+ uint32_t int_buf[SPAPR_DRC_TABLE_SIZE + 1];
+ uint32_t *entries;
+ int offset, fdt_offset;
+ int i, ret;
+
+ fdt_offset = fdt_path_offset(fdt, "/");
+
+ /* ibm,drc-indexes */
+ memset(int_buf, 0, sizeof(int_buf));
+ int_buf[0] = SPAPR_DRC_TABLE_SIZE;
+
+ for (i = 1; i <= SPAPR_DRC_TABLE_SIZE; i++) {
+ int_buf[i] = drc_table[i-1].drc_index;
+ }
+
+ ret = fdt_setprop(fdt, fdt_offset, "ibm,drc-indexes", int_buf,
+ sizeof(int_buf));
+ if (ret) {
+ fprintf(stderr, "Couldn't finalize ibm,drc-indexes property\n");
+ }
+
+ /* ibm,drc-power-domains */
+ memset(int_buf, 0, sizeof(int_buf));
+ int_buf[0] = SPAPR_DRC_TABLE_SIZE;
+
+ for (i = 1; i <= SPAPR_DRC_TABLE_SIZE; i++) {
+ int_buf[i] = 0xffffffff;
+ }
+
+ ret = fdt_setprop(fdt, fdt_offset, "ibm,drc-power-domains", int_buf,
+ sizeof(int_buf));
+ if (ret) {
+ fprintf(stderr, "Couldn't finalize ibm,drc-power-domains property\n");
+ }
+
+ /* ibm,drc-names */
+ memset(char_buf, 0, sizeof(char_buf));
+ entries = (uint32_t *)&char_buf[0];
+ *entries = SPAPR_DRC_TABLE_SIZE;
+ offset = sizeof(*entries);
+
+ for (i = 0; i < SPAPR_DRC_TABLE_SIZE; i++) {
+ offset += sprintf(char_buf + offset, "PHB %d", i + 1);
+ char_buf[offset++] = '\0';
+ }
+
+ ret = fdt_setprop(fdt, fdt_offset, "ibm,drc-names", char_buf, offset);
+ if (ret) {
+ fprintf(stderr, "Couldn't finalize ibm,drc-names property\n");
+ }
+
+ /* ibm,drc-types */
+ memset(char_buf, 0, sizeof(char_buf));
+ entries = (uint32_t *)&char_buf[0];
+ *entries = SPAPR_DRC_TABLE_SIZE;
+ offset = sizeof(*entries);
+
+ for (i = 0; i < SPAPR_DRC_TABLE_SIZE; i++) {
+ offset += sprintf(char_buf + offset, "PHB");
+ char_buf[offset++] = '\0';
+ }
+
+ ret = fdt_setprop(fdt, fdt_offset, "ibm,drc-types", char_buf, offset);
+ if (ret) {
+ fprintf(stderr, "Couldn't finalize ibm,drc-types property\n");
+ }
+}
+
#define _FDT(exp) \
do { \
int ret = (exp); \
@@ -307,6 +432,8 @@ static void *spapr_create_fdt_skel(hwaddr initrd_base,
int i, smt = kvmppc_smt_threads();
unsigned char vec5[] = {0x0, 0x0, 0x0, 0x0, 0x0, 0x80};
+ spapr_init_drc_table();
+
fdt = g_malloc0(FDT_MAX_SIZE);
_FDT((fdt_create(fdt, FDT_MAX_SIZE)));
@@ -590,6 +717,7 @@ static void spapr_finalize_fdt(sPAPREnvironment *spapr,
int ret;
void *fdt;
sPAPRPHBState *phb;
+ DrcEntry *drc_entry;
fdt = g_malloc(FDT_MAX_SIZE);
@@ -609,6 +737,8 @@ static void spapr_finalize_fdt(sPAPREnvironment *spapr,
}
QLIST_FOREACH(phb, &spapr->phbs, list) {
+ drc_entry = spapr_add_phb_to_drc_table(phb->buid, 2 /* Unusable */);
+ g_assert(drc_entry);
ret = spapr_populate_pci_dt(phb, PHANDLE_XICP, fdt);
}
@@ -633,6 +763,8 @@ static void spapr_finalize_fdt(sPAPREnvironment *spapr,
spapr_populate_chosen_stdout(fdt, spapr->vio_bus);
}
+ spapr_create_drc_dt_entries(fdt);
+
_FDT((fdt_pack(fdt)));
if (fdt_totalsize(fdt) > FDT_MAX_SIZE) {
diff --git a/include/hw/ppc/spapr.h b/include/hw/ppc/spapr.h
index cadf95f..55304c5 100644
--- a/include/hw/ppc/spapr.h
+++ b/include/hw/ppc/spapr.h
@@ -333,6 +333,40 @@ typedef struct sPAPREnvironment {
#define ENCODE_DRC_STATE(val, m, s) \
(((uint32_t)(val) << (s)) & (uint32_t)(m))
+/* For dlparable/hotpluggable slots */
+#define SPAPR_DRC_TABLE_SIZE 32
+#define SPAPR_DRC_PHB_SLOT_MAX 32
+#define SPAPR_DRC_DEV_ID_BASE 0x40000000
+
+typedef struct ConfigureConnectorState {
+ void *fdt;
+ int offset_start;
+ int offset;
+ int depth;
+ PCIDevice *dev;
+ enum {
+ CC_STATE_IDLE = 0,
+ CC_STATE_PENDING = 1,
+ CC_STATE_ACTIVE,
+ } state;
+} ConfigureConnectorState;
+
+typedef struct DrcEntry DrcEntry;
+
+struct DrcEntry {
+ uint32_t drc_index;
+ uint64_t phb_buid;
+ void *fdt;
+ int fdt_offset;
+ uint32_t state;
+ ConfigureConnectorState cc_state;
+ DrcEntry *child_entries;
+};
+
+extern DrcEntry drc_table[SPAPR_DRC_TABLE_SIZE];
+DrcEntry *spapr_add_phb_to_drc_table(uint64_t buid, uint32_t state);
+
+
extern sPAPREnvironment *spapr;
/*#define DEBUG_SPAPR_HCALLS*/
--
1.7.9.5
