From: "Philippe Mathieu-Daudé" <f4bug@amsat.org> To: Atish Patra <atishp@rivosinc.com>, qemu-devel@nongnu.org Cc: Palmer Dabbelt <palmer@dabbelt.com>, Bin Meng <bin.meng@windriver.com>, Alistair Francis <alistair.francis@wdc.com>, qemu-riscv@nongnu.org Subject: Re: [PATCH v4 11/11] hw/riscv: virt: Add PMU DT node to the device tree Date: Fri, 7 Jan 2022 14:51:58 +0100 [thread overview] Message-ID: <9c8adbbf-e80a-894f-48e5-cf8f35093d4f@amsat.org> (raw) In-Reply-To: <20220107004846.378859-12-atishp@rivosinc.com> On 7/1/22 01:48, Atish Patra wrote: > Qemu virt machine can support few cache events and cycle/instret counters. > It also supports counter overflow for these events. > > Add a DT node so that OpenSBI/Linux kernel is aware of the virt machine > capabilities. There are some dummy nodes added for testing as well. > > Signed-off-by: Atish Patra <atish.patra@wdc.com> > Signed-off-by: Atish Patra <atishp@rivosinc.com> > --- > hw/riscv/virt.c | 38 ++++++++++++++++++++++++++++++++++++++ > target/riscv/pmu.c | 45 +++++++++++++++++++++++++++++++++++++++++++++ > target/riscv/pmu.h | 1 + > 3 files changed, 84 insertions(+) > +static void create_fdt_socket_pmu(RISCVVirtState *s, > + int socket, uint32_t *phandle, > + uint32_t *intc_phandles) > +{ > + int cpu; > + char *pmu_name; > + uint32_t *pmu_cells; > + MachineState *mc = MACHINE(s); > + RISCVCPU hart = s->soc[socket].harts[0]; > + > + pmu_cells = g_new0(uint32_t, s->soc[socket].num_harts * 2); > + > + for (cpu = 0; cpu < s->soc[socket].num_harts; cpu++) { > + pmu_cells[cpu * 2 + 0] = cpu_to_be32(intc_phandles[cpu]); > + pmu_cells[cpu * 2 + 1] = cpu_to_be32(IRQ_PMU_OVF); > + } > + > + pmu_name = g_strdup_printf("/soc/pmu"); > + qemu_fdt_add_subnode(mc->fdt, pmu_name); > + qemu_fdt_setprop_string(mc->fdt, pmu_name, "compatible", "riscv,pmu"); > + riscv_pmu_generate_fdt_node(mc->fdt, hart.cfg.pmu_num, pmu_name); pmu_cells[] is not consumed... > + > + g_free(pmu_name); > + g_free(pmu_cells); > +}
WARNING: multiple messages have this Message-ID (diff)
From: "Philippe Mathieu-Daudé" <f4bug@amsat.org> To: Atish Patra <atishp@rivosinc.com>, qemu-devel@nongnu.org Cc: Alistair Francis <alistair.francis@wdc.com>, Bin Meng <bin.meng@windriver.com>, Palmer Dabbelt <palmer@dabbelt.com>, qemu-riscv@nongnu.org Subject: Re: [PATCH v4 11/11] hw/riscv: virt: Add PMU DT node to the device tree Date: Fri, 7 Jan 2022 14:51:58 +0100 [thread overview] Message-ID: <9c8adbbf-e80a-894f-48e5-cf8f35093d4f@amsat.org> (raw) In-Reply-To: <20220107004846.378859-12-atishp@rivosinc.com> On 7/1/22 01:48, Atish Patra wrote: > Qemu virt machine can support few cache events and cycle/instret counters. > It also supports counter overflow for these events. > > Add a DT node so that OpenSBI/Linux kernel is aware of the virt machine > capabilities. There are some dummy nodes added for testing as well. > > Signed-off-by: Atish Patra <atish.patra@wdc.com> > Signed-off-by: Atish Patra <atishp@rivosinc.com> > --- > hw/riscv/virt.c | 38 ++++++++++++++++++++++++++++++++++++++ > target/riscv/pmu.c | 45 +++++++++++++++++++++++++++++++++++++++++++++ > target/riscv/pmu.h | 1 + > 3 files changed, 84 insertions(+) > +static void create_fdt_socket_pmu(RISCVVirtState *s, > + int socket, uint32_t *phandle, > + uint32_t *intc_phandles) > +{ > + int cpu; > + char *pmu_name; > + uint32_t *pmu_cells; > + MachineState *mc = MACHINE(s); > + RISCVCPU hart = s->soc[socket].harts[0]; > + > + pmu_cells = g_new0(uint32_t, s->soc[socket].num_harts * 2); > + > + for (cpu = 0; cpu < s->soc[socket].num_harts; cpu++) { > + pmu_cells[cpu * 2 + 0] = cpu_to_be32(intc_phandles[cpu]); > + pmu_cells[cpu * 2 + 1] = cpu_to_be32(IRQ_PMU_OVF); > + } > + > + pmu_name = g_strdup_printf("/soc/pmu"); > + qemu_fdt_add_subnode(mc->fdt, pmu_name); > + qemu_fdt_setprop_string(mc->fdt, pmu_name, "compatible", "riscv,pmu"); > + riscv_pmu_generate_fdt_node(mc->fdt, hart.cfg.pmu_num, pmu_name); pmu_cells[] is not consumed... > + > + g_free(pmu_name); > + g_free(pmu_cells); > +}
next prev parent reply other threads:[~2022-01-07 14:48 UTC|newest] Thread overview: 54+ messages / expand[flat|nested] mbox.gz Atom feed top 2022-01-07 0:48 [PATCH v4 00/11] Improve PMU support Atish Patra 2022-01-07 0:48 ` Atish Patra 2022-01-07 0:48 ` [PATCH v4 01/11] target/riscv: Fix PMU CSR predicate function Atish Patra 2022-01-07 0:48 ` Atish Patra 2022-01-07 0:48 ` [PATCH v4 02/11] target/riscv: Implement PMU CSR predicate function for S-mode Atish Patra 2022-01-07 0:48 ` Atish Patra 2022-01-07 7:50 ` Bin Meng 2022-01-07 7:50 ` Bin Meng 2022-01-07 0:48 ` [PATCH v4 03/11] target/riscv: pmu: Rename the counters extension to pmu Atish Patra 2022-01-07 0:48 ` Atish Patra 2022-01-07 0:48 ` [PATCH v4 04/11] target/riscv: pmu: Make number of counters configurable Atish Patra 2022-01-07 0:48 ` Atish Patra 2022-01-07 7:50 ` Bin Meng 2022-01-07 7:50 ` Bin Meng 2022-01-10 6:46 ` Alistair Francis 2022-01-10 6:46 ` Alistair Francis 2022-01-07 0:48 ` [PATCH v4 05/11] target/riscv: Implement mcountinhibit CSR Atish Patra 2022-01-07 0:48 ` Atish Patra 2022-01-07 0:48 ` [PATCH v4 06/11] target/riscv: Add support for hpmcounters/hpmevents Atish Patra 2022-01-07 0:48 ` Atish Patra 2022-01-07 10:52 ` Bin Meng 2022-01-07 10:52 ` Bin Meng 2022-01-07 0:48 ` [PATCH v4 07/11] target/riscv: Support mcycle/minstret write operation Atish Patra 2022-01-07 0:48 ` Atish Patra 2022-01-10 7:25 ` Bin Meng 2022-01-10 7:25 ` Bin Meng 2022-01-11 19:57 ` Atish Patra 2022-01-11 19:57 ` Atish Patra 2022-01-12 14:01 ` Bin Meng 2022-01-12 14:01 ` Bin Meng 2022-01-07 0:48 ` [PATCH v4 08/11] target/riscv: Add sscofpmf extension support Atish Patra 2022-01-07 0:48 ` Atish Patra 2022-01-10 11:34 ` Anup Patel 2022-01-10 11:34 ` Anup Patel 2022-01-10 22:38 ` Atish Kumar Patra 2022-01-10 22:38 ` Atish Kumar Patra 2022-01-07 0:48 ` [PATCH v4 09/11] target/riscv: Simplify counter predicate function Atish Patra 2022-01-07 0:48 ` Atish Patra 2022-01-10 8:26 ` Bin Meng 2022-01-10 8:26 ` Bin Meng 2022-01-10 22:35 ` Atish Kumar Patra 2022-01-10 22:35 ` Atish Kumar Patra 2022-01-07 0:48 ` [PATCH v4 10/11] target/riscv: Add few cache related PMU events Atish Patra 2022-01-07 0:48 ` Atish Patra 2022-01-07 0:48 ` [PATCH v4 11/11] hw/riscv: virt: Add PMU DT node to the device tree Atish Patra 2022-01-07 0:48 ` Atish Patra 2022-01-07 13:51 ` Philippe Mathieu-Daudé [this message] 2022-01-07 13:51 ` Philippe Mathieu-Daudé 2022-01-10 1:23 ` Atish Patra 2022-01-10 1:23 ` Atish Patra 2022-01-10 7:55 ` Bin Meng 2022-01-10 7:55 ` Bin Meng 2022-01-10 22:42 ` Atish Kumar Patra 2022-01-10 22:42 ` Atish Kumar Patra
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