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[PULL 70/87] pnv/xive2: Add support XIVE2 P9-compat mode (or Gen1)
From: |
Cédric Le Goater |
Subject: |
[PULL 70/87] pnv/xive2: Add support XIVE2 P9-compat mode (or Gen1) |
Date: |
Wed, 2 Mar 2022 12:07:46 +0100 |
The thread interrupt management area (TIMA) is a set of pages mapped
in the Hypervisor and in the guest OS address space giving access to
the interrupt thread context registers for interrupt management, ACK,
EOI, CPPR, etc.
XIVE2 changes slightly the TIMA layout with extra bits for the new
features, larger CAM lines and the controller provides configuration
switches for backward compatibility. This is called the XIVE2
P9-compat mode, of Gen1 TIMA. It impacts the layout of the TIMA and
the availability of the internal features associated with it,
Automatic Save & Restore for instance. Using a P9 layout also means
setting the controller in such a mode at init time.
As the OPAL driver initializes the XIVE2 controller with a XIVE2/P10
TIMA directly, the XIVE2 model only has a simple support for the
compat mode in the OS TIMA.
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
---
hw/intc/pnv_xive2_regs.h | 6 ++++++
hw/intc/pnv_xive2.c | 22 +++++++++++++++++-----
2 files changed, 23 insertions(+), 5 deletions(-)
diff --git a/hw/intc/pnv_xive2_regs.h b/hw/intc/pnv_xive2_regs.h
index a46e5133b560..d261766cf5fb 100644
--- a/hw/intc/pnv_xive2_regs.h
+++ b/hw/intc/pnv_xive2_regs.h
@@ -60,6 +60,12 @@
#define CQ_XIVE_CFG_HYP_HARD_BLKID_OVERRIDE PPC_BIT(16)
#define CQ_XIVE_CFG_HYP_HARD_BLOCK_ID PPC_BITMASK(17, 23)
+#define CQ_XIVE_CFG_GEN1_TIMA_OS PPC_BIT(24)
+#define CQ_XIVE_CFG_GEN1_TIMA_HYP PPC_BIT(25)
+#define CQ_XIVE_CFG_GEN1_TIMA_HYP_BLK0 PPC_BIT(26) /* 0 if bit[25]=0
*/
+#define CQ_XIVE_CFG_GEN1_TIMA_CROWD_DIS PPC_BIT(27) /* 0 if bit[25]=0
*/
+#define CQ_XIVE_CFG_GEN1_END_ESX PPC_BIT(28)
+
/* Interrupt Controller Base Address Register - 512 pages (32M) */
#define X_CQ_IC_BAR 0x08
#define CQ_IC_BAR 0x040
diff --git a/hw/intc/pnv_xive2.c b/hw/intc/pnv_xive2.c
index 012b238fd037..5df378dde4b6 100644
--- a/hw/intc/pnv_xive2.c
+++ b/hw/intc/pnv_xive2.c
@@ -445,6 +445,8 @@ static int pnv_xive2_match_nvt(XivePresenter *xptr, uint8_t
format,
PnvChip *chip = xive->chip;
int count = 0;
int i, j;
+ bool gen1_tima_os =
+ xive->cq_regs[CQ_XIVE_CFG >> 3] & CQ_XIVE_CFG_GEN1_TIMA_OS;
for (i = 0; i < chip->nr_cores; i++) {
PnvCore *pc = chip->cores[i];
@@ -461,9 +463,15 @@ static int pnv_xive2_match_nvt(XivePresenter *xptr,
uint8_t format,
tctx = XIVE_TCTX(pnv_cpu_state(cpu)->intc);
- ring = xive2_presenter_tctx_match(xptr, tctx, format, nvt_blk,
- nvt_idx, cam_ignore,
- logic_serv);
+ if (gen1_tima_os) {
+ ring = xive_presenter_tctx_match(xptr, tctx, format, nvt_blk,
+ nvt_idx, cam_ignore,
+ logic_serv);
+ } else {
+ ring = xive2_presenter_tctx_match(xptr, tctx, format, nvt_blk,
+ nvt_idx, cam_ignore,
+ logic_serv);
+ }
/*
* Save the context and follow on to catch duplicates,
@@ -1628,9 +1636,11 @@ static void pnv_xive2_tm_write(void *opaque, hwaddr
offset,
PnvXive2 *xive = pnv_xive2_tm_get_xive(cpu);
XiveTCTX *tctx = XIVE_TCTX(pnv_cpu_state(cpu)->intc);
XivePresenter *xptr = XIVE_PRESENTER(xive);
+ bool gen1_tima_os =
+ xive->cq_regs[CQ_XIVE_CFG >> 3] & CQ_XIVE_CFG_GEN1_TIMA_OS;
/* TODO: should we switch the TM ops table instead ? */
- if (offset == HV_PUSH_OS_CTX_OFFSET) {
+ if (!gen1_tima_os && offset == HV_PUSH_OS_CTX_OFFSET) {
xive2_tm_push_os_ctx(xptr, tctx, offset, value, size);
return;
}
@@ -1645,9 +1655,11 @@ static uint64_t pnv_xive2_tm_read(void *opaque, hwaddr
offset, unsigned size)
PnvXive2 *xive = pnv_xive2_tm_get_xive(cpu);
XiveTCTX *tctx = XIVE_TCTX(pnv_cpu_state(cpu)->intc);
XivePresenter *xptr = XIVE_PRESENTER(xive);
+ bool gen1_tima_os =
+ xive->cq_regs[CQ_XIVE_CFG >> 3] & CQ_XIVE_CFG_GEN1_TIMA_OS;
/* TODO: should we switch the TM ops table instead ? */
- if (offset == HV_PULL_OS_CTX_OFFSET) {
+ if (!gen1_tima_os && offset == HV_PULL_OS_CTX_OFFSET) {
return xive2_tm_pull_os_ctx(xptr, tctx, offset, size);
}
--
2.34.1
- [PULL 51/87] target/ppc: Implement xs{max,min}cqp, (continued)
- [PULL 51/87] target/ppc: Implement xs{max,min}cqp, Cédric Le Goater, 2022/03/02
- [PULL 43/87] target/ppc: implement xs[n]maddqp[o]/xs[n]msubqp[o], Cédric Le Goater, 2022/03/02
- [PULL 16/87] target/ppc: Move Vector Compare Not Equal or Zero to decodetree, Cédric Le Goater, 2022/03/02
- [PULL 33/87] target/ppc: implement vrlqmi, Cédric Le Goater, 2022/03/02
- [PULL 39/87] tcg/tcg-op-gvec.c: Introduce tcg_gen_gvec_4i, Cédric Le Goater, 2022/03/02
- [PULL 35/87] target/ppc: Move xxsel to decodetree, Cédric Le Goater, 2022/03/02
- [PULL 42/87] target/ppc: move xs[n]madd[am][ds]p/xs[n]msub[am][ds]p to decodetree, Cédric Le Goater, 2022/03/02
- [PULL 48/87] target/ppc: Move xscmp{eq,ge,gt}dp to decodetree, Cédric Le Goater, 2022/03/02
- [PULL 63/87] ppc/psi: Add support for StoreEOI and 64k ESB pages (POWER10), Cédric Le Goater, 2022/03/02
- [PULL 69/87] ppc/pnv: add XIVE Gen2 TIMA support, Cédric Le Goater, 2022/03/02
- [PULL 70/87] pnv/xive2: Add support XIVE2 P9-compat mode (or Gen1),
Cédric Le Goater <=
- [PULL 67/87] ppc/pnv: Add support for PHB5 "Address-based trigger" mode, Cédric Le Goater, 2022/03/02
- [PULL 66/87] ppc/pnv: Add support for PQ offload on PHB5, Cédric Le Goater, 2022/03/02
- [PULL 59/87] ppc/pnv: Add a OCC model for POWER10, Cédric Le Goater, 2022/03/02
- [PULL 73/87] pnv/xive2: Add support for 8bits thread id, Cédric Le Goater, 2022/03/02
- [PULL 84/87] hw/ppc/spapr_numa.c: simplify spapr_numa_write_assoc_lookup_arrays(), Cédric Le Goater, 2022/03/02
- [PULL 82/87] hw/ppc/spapr_drc.c: use g_autofree in spapr_dr_connector_new(), Cédric Le Goater, 2022/03/02
- [PULL 86/87] hw/ppc/spapr_rtas.c: use g_autofree in rtas_ibm_get_system_parameter(), Cédric Le Goater, 2022/03/02
- [PULL 61/87] ppc/pnv: Add model for POWER10 PHB5 PCIe Host bridge, Cédric Le Goater, 2022/03/02
- [PULL 54/87] target/ppc: implement plxssp/pstxssp, Cédric Le Goater, 2022/03/02
- [PULL 64/87] ppc/xive2: Add support for notification injection on ESB pages, Cédric Le Goater, 2022/03/02