Re: [PATCH 04/13] powerpc/powernv: Add platform-specific services for opencapi
From: Andrew Donnellan <hidden>
Date: 2018-01-03 07:32:06
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On 19/12/17 02:21, Frederic Barrat wrote:
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Implement a few platform-specific calls which can be used by drivers: - provide the Transaction Layer capabilities of the host, so that the driver can find some common ground and configure the device and host appropriately. - provide the hw interrupt to be used for translation faults raised by the NPU - map/unmap some NPU mmio registers to get the fault context when the NPU raises an address translation fault The rest are wrappers around the previously-introduced opal calls. Signed-off-by: Frederic Barrat <redacted> --- arch/powerpc/include/asm/pnv-ocxl.h | 36 ++++++ arch/powerpc/platforms/powernv/Makefile | 1 + arch/powerpc/platforms/powernv/ocxl.c | 187 ++++++++++++++++++++++++++++++++ 3 files changed, 224 insertions(+) create mode 100644 arch/powerpc/include/asm/pnv-ocxl.h create mode 100644 arch/powerpc/platforms/powernv/ocxl.cdiff --git a/arch/powerpc/include/asm/pnv-ocxl.h b/arch/powerpc/include/asm/pnv-ocxl.h new file mode 100644 index 000000000000..b9ab3f0a9634 --- /dev/null +++ b/arch/powerpc/include/asm/pnv-ocxl.h@@ -0,0 +1,36 @@ +/* + * Copyright 2017 IBM Corp. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + */ + +#ifndef _ASM_PVN_OCXL_H +#define _ASM_PVN_OCXL_H
I assume you meant "PNV" here.
+ +#include <linux/pci.h> + +#define PNV_OCXL_TL_MAX_TEMPLATE 63 +#define PNV_OCXL_TL_BITS_PER_RATE 4 +#define PNV_OCXL_TL_RATE_BUF_SIZE ((PNV_OCXL_TL_MAX_TEMPLATE+1) * PNV_OCXL_TL_BITS_PER_RATE / 8) + +extern int pnv_ocxl_get_tl_cap(struct pci_dev *dev, long *cap, + char *rate_buf, int rate_buf_size); +extern int pnv_ocxl_set_tl_conf(struct pci_dev *dev, long cap, + uint64_t rate_buf_phys, int rate_buf_size); + +extern int pnv_ocxl_get_xsl_irq(struct pci_dev *dev, int *hwirq); +extern void pnv_ocxl_unmap_xsl_regs(void __iomem *dsisr, void __iomem *dar, + void __iomem *tfc, void __iomem *pe_handle); +extern int pnv_ocxl_map_xsl_regs(struct pci_dev *dev, void __iomem **dsisr, + void __iomem **dar, void __iomem **tfc, + void __iomem **pe_handle); + +extern int pnv_ocxl_spa_setup(struct pci_dev *dev, void *spa_mem, int PE_mask, + void **platform_data); +extern void pnv_ocxl_spa_release(void *platform_data); +extern int pnv_ocxl_spa_remove_pe(void *platform_data, int pe_handle); + +#endif /* _ASM_PVN_OCXL_H */
And here
quoted hunk ↗ jump to hunk
diff --git a/arch/powerpc/platforms/powernv/Makefile b/arch/powerpc/platforms/powernv/Makefile index 3732118a0482..6c9d5199a7e2 100644 --- a/arch/powerpc/platforms/powernv/Makefile +++ b/arch/powerpc/platforms/powernv/Makefile@@ -17,3 +17,4 @@ obj-$(CONFIG_PERF_EVENTS) += opal-imc.o obj-$(CONFIG_PPC_MEMTRACE) += memtrace.o obj-$(CONFIG_PPC_VAS) += vas.o vas-window.o vas-debug.o obj-$(CONFIG_PPC_FTW) += nx-ftw.o +obj-$(CONFIG_OCXL_BASE) += ocxl.odiff --git a/arch/powerpc/platforms/powernv/ocxl.c b/arch/powerpc/platforms/powernv/ocxl.c new file mode 100644 index 000000000000..3378b75cf5e5 --- /dev/null +++ b/arch/powerpc/platforms/powernv/ocxl.c +int pnv_ocxl_get_xsl_irq(struct pci_dev *dev, int *hwirq) +{ + int rc; + + rc = of_property_read_u32(dev->dev.of_node, "ibm,opal-xsl-irq", hwirq); + if (rc) { + dev_err(&dev->dev, + "Can't translation xsl interrupt for device\n");
Can't get? -- Andrew Donnellan OzLabs, ADL Canberra andrew.donnellan@au1.ibm.com IBM Australia Limited