From ace9429bb58fd418f0c81d4c2835699bddf6bde6 Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Thu, 11 Apr 2024 10:27:49 +0200
Subject: Adding upstream version 6.6.15.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 arch/sparc/kernel/pci_sun4v_asm.S | 431 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 431 insertions(+)
 create mode 100644 arch/sparc/kernel/pci_sun4v_asm.S

(limited to 'arch/sparc/kernel/pci_sun4v_asm.S')

diff --git a/arch/sparc/kernel/pci_sun4v_asm.S b/arch/sparc/kernel/pci_sun4v_asm.S
new file mode 100644
index 0000000000..2b8051871a
--- /dev/null
+++ b/arch/sparc/kernel/pci_sun4v_asm.S
@@ -0,0 +1,431 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* pci_sun4v_asm: Hypervisor calls for PCI support.
+ *
+ * Copyright (C) 2006, 2008 David S. Miller <davem@davemloft.net>
+ */
+
+#include <linux/linkage.h>
+#include <asm/hypervisor.h>
+
+	/* %o0: devhandle
+	 * %o1:	tsbid
+	 * %o2:	num ttes
+	 * %o3:	io_attributes
+	 * %o4:	io_page_list phys address
+	 *
+	 * returns %o0:	-status if status was non-zero, else
+	 *         %o0:	num pages mapped
+	 */
+ENTRY(pci_sun4v_iommu_map)
+	mov	%o5, %g1
+	mov	HV_FAST_PCI_IOMMU_MAP, %o5
+	ta	HV_FAST_TRAP
+	brnz,pn %o0, 1f
+	 sub	%g0, %o0, %o0
+	mov	%o1, %o0
+1:	retl
+	 nop
+ENDPROC(pci_sun4v_iommu_map)
+
+	/* %o0: devhandle
+	 * %o1:	tsbid
+	 * %o2:	num ttes
+	 *
+	 * returns %o0:	num ttes demapped
+	 */
+ENTRY(pci_sun4v_iommu_demap)
+	mov	HV_FAST_PCI_IOMMU_DEMAP, %o5
+	ta	HV_FAST_TRAP
+	retl
+	 mov	%o1, %o0
+ENDPROC(pci_sun4v_iommu_demap)
+
+	/* %o0: devhandle
+	 * %o1:	tsbid
+	 * %o2:	&io_attributes
+	 * %o3:	&real_address
+	 *
+	 * returns %o0:	status
+	 */
+ENTRY(pci_sun4v_iommu_getmap)
+	mov	%o2, %o4
+	mov	HV_FAST_PCI_IOMMU_GETMAP, %o5
+	ta	HV_FAST_TRAP
+	stx	%o1, [%o4]
+	stx	%o2, [%o3]
+	retl
+	 mov	%o0, %o0
+ENDPROC(pci_sun4v_iommu_getmap)
+
+	/* %o0: devhandle
+	 * %o1:	pci_device
+	 * %o2:	pci_config_offset
+	 * %o3:	size
+	 *
+	 * returns %o0:	data
+	 *
+	 * If there is an error, the data will be returned
+	 * as all 1's.
+	 */
+ENTRY(pci_sun4v_config_get)
+	mov	HV_FAST_PCI_CONFIG_GET, %o5
+	ta	HV_FAST_TRAP
+	brnz,a,pn %o1, 1f
+	 mov	-1, %o2
+1:	retl
+	 mov	%o2, %o0
+ENDPROC(pci_sun4v_config_get)
+
+	/* %o0: devhandle
+	 * %o1:	pci_device
+	 * %o2:	pci_config_offset
+	 * %o3:	size
+	 * %o4:	data
+	 *
+	 * returns %o0:	status
+	 *
+	 * status will be zero if the operation completed
+	 * successfully, else -1 if not
+	 */
+ENTRY(pci_sun4v_config_put)
+	mov	HV_FAST_PCI_CONFIG_PUT, %o5
+	ta	HV_FAST_TRAP
+	brnz,a,pn %o1, 1f
+	 mov	-1, %o1
+1:	retl
+	 mov	%o1, %o0
+ENDPROC(pci_sun4v_config_put)
+
+	/* %o0: devhandle
+	 * %o1: msiqid
+	 * %o2: msiq phys address
+	 * %o3: num entries
+	 *
+	 * returns %o0: status
+	 *
+	 * status will be zero if the operation completed
+	 * successfully, else -1 if not
+	 */
+ENTRY(pci_sun4v_msiq_conf)
+	mov	HV_FAST_PCI_MSIQ_CONF, %o5
+	ta	HV_FAST_TRAP
+	retl
+	 mov	%o0, %o0
+ENDPROC(pci_sun4v_msiq_conf)
+
+	/* %o0: devhandle
+	 * %o1: msiqid
+	 * %o2:	&msiq_phys_addr
+	 * %o3:	&msiq_num_entries
+	 *
+	 * returns %o0: status
+	 */
+ENTRY(pci_sun4v_msiq_info)
+	mov	%o2, %o4
+	mov	HV_FAST_PCI_MSIQ_INFO, %o5
+	ta	HV_FAST_TRAP
+	stx	%o1, [%o4]
+	stx	%o2, [%o3]
+	retl
+	 mov	%o0, %o0
+ENDPROC(pci_sun4v_msiq_info)
+
+	/* %o0: devhandle
+	 * %o1: msiqid
+	 * %o2:	&valid
+	 *
+	 * returns %o0: status
+	 */
+ENTRY(pci_sun4v_msiq_getvalid)
+	mov	HV_FAST_PCI_MSIQ_GETVALID, %o5
+	ta	HV_FAST_TRAP
+	stx	%o1, [%o2]
+	retl
+	 mov	%o0, %o0
+ENDPROC(pci_sun4v_msiq_getvalid)
+
+	/* %o0: devhandle
+	 * %o1: msiqid
+	 * %o2:	valid
+	 *
+	 * returns %o0: status
+	 */
+ENTRY(pci_sun4v_msiq_setvalid)
+	mov	HV_FAST_PCI_MSIQ_SETVALID, %o5
+	ta	HV_FAST_TRAP
+	retl
+	 mov	%o0, %o0
+ENDPROC(pci_sun4v_msiq_setvalid)
+
+	/* %o0: devhandle
+	 * %o1: msiqid
+	 * %o2:	&state
+	 *
+	 * returns %o0: status
+	 */
+ENTRY(pci_sun4v_msiq_getstate)
+	mov	HV_FAST_PCI_MSIQ_GETSTATE, %o5
+	ta	HV_FAST_TRAP
+	stx	%o1, [%o2]
+	retl
+	 mov	%o0, %o0
+ENDPROC(pci_sun4v_msiq_getstate)
+
+	/* %o0: devhandle
+	 * %o1: msiqid
+	 * %o2:	state
+	 *
+	 * returns %o0: status
+	 */
+ENTRY(pci_sun4v_msiq_setstate)
+	mov	HV_FAST_PCI_MSIQ_SETSTATE, %o5
+	ta	HV_FAST_TRAP
+	retl
+	 mov	%o0, %o0
+ENDPROC(pci_sun4v_msiq_setstate)
+
+	/* %o0: devhandle
+	 * %o1: msiqid
+	 * %o2:	&head
+	 *
+	 * returns %o0: status
+	 */
+ENTRY(pci_sun4v_msiq_gethead)
+	mov	HV_FAST_PCI_MSIQ_GETHEAD, %o5
+	ta	HV_FAST_TRAP
+	stx	%o1, [%o2]
+	retl
+	 mov	%o0, %o0
+ENDPROC(pci_sun4v_msiq_gethead)
+
+	/* %o0: devhandle
+	 * %o1: msiqid
+	 * %o2:	head
+	 *
+	 * returns %o0: status
+	 */
+ENTRY(pci_sun4v_msiq_sethead)
+	mov	HV_FAST_PCI_MSIQ_SETHEAD, %o5
+	ta	HV_FAST_TRAP
+	retl
+	 mov	%o0, %o0
+ENDPROC(pci_sun4v_msiq_sethead)
+
+	/* %o0: devhandle
+	 * %o1: msiqid
+	 * %o2:	&tail
+	 *
+	 * returns %o0: status
+	 */
+ENTRY(pci_sun4v_msiq_gettail)
+	mov	HV_FAST_PCI_MSIQ_GETTAIL, %o5
+	ta	HV_FAST_TRAP
+	stx	%o1, [%o2]
+	retl
+	 mov	%o0, %o0
+ENDPROC(pci_sun4v_msiq_gettail)
+
+	/* %o0: devhandle
+	 * %o1: msinum
+	 * %o2:	&valid
+	 *
+	 * returns %o0: status
+	 */
+ENTRY(pci_sun4v_msi_getvalid)
+	mov	HV_FAST_PCI_MSI_GETVALID, %o5
+	ta	HV_FAST_TRAP
+	stx	%o1, [%o2]
+	retl
+	 mov	%o0, %o0
+ENDPROC(pci_sun4v_msi_getvalid)
+
+	/* %o0: devhandle
+	 * %o1: msinum
+	 * %o2:	valid
+	 *
+	 * returns %o0: status
+	 */
+ENTRY(pci_sun4v_msi_setvalid)
+	mov	HV_FAST_PCI_MSI_SETVALID, %o5
+	ta	HV_FAST_TRAP
+	retl
+	 mov	%o0, %o0
+ENDPROC(pci_sun4v_msi_setvalid)
+
+	/* %o0: devhandle
+	 * %o1: msinum
+	 * %o2:	&msiq
+	 *
+	 * returns %o0: status
+	 */
+ENTRY(pci_sun4v_msi_getmsiq)
+	mov	HV_FAST_PCI_MSI_GETMSIQ, %o5
+	ta	HV_FAST_TRAP
+	stx	%o1, [%o2]
+	retl
+	 mov	%o0, %o0
+ENDPROC(pci_sun4v_msi_getmsiq)
+
+	/* %o0: devhandle
+	 * %o1: msinum
+	 * %o2:	msitype
+	 * %o3:	msiq
+	 *
+	 * returns %o0: status
+	 */
+ENTRY(pci_sun4v_msi_setmsiq)
+	mov	HV_FAST_PCI_MSI_SETMSIQ, %o5
+	ta	HV_FAST_TRAP
+	retl
+	 mov	%o0, %o0
+ENDPROC(pci_sun4v_msi_setmsiq)
+
+	/* %o0: devhandle
+	 * %o1: msinum
+	 * %o2:	&state
+	 *
+	 * returns %o0: status
+	 */
+ENTRY(pci_sun4v_msi_getstate)
+	mov	HV_FAST_PCI_MSI_GETSTATE, %o5
+	ta	HV_FAST_TRAP
+	stx	%o1, [%o2]
+	retl
+	 mov	%o0, %o0
+ENDPROC(pci_sun4v_msi_getstate)
+
+	/* %o0: devhandle
+	 * %o1: msinum
+	 * %o2:	state
+	 *
+	 * returns %o0: status
+	 */
+ENTRY(pci_sun4v_msi_setstate)
+	mov	HV_FAST_PCI_MSI_SETSTATE, %o5
+	ta	HV_FAST_TRAP
+	retl
+	 mov	%o0, %o0
+ENDPROC(pci_sun4v_msi_setstate)
+
+	/* %o0: devhandle
+	 * %o1: msinum
+	 * %o2:	&msiq
+	 *
+	 * returns %o0: status
+	 */
+ENTRY(pci_sun4v_msg_getmsiq)
+	mov	HV_FAST_PCI_MSG_GETMSIQ, %o5
+	ta	HV_FAST_TRAP
+	stx	%o1, [%o2]
+	retl
+	 mov	%o0, %o0
+ENDPROC(pci_sun4v_msg_getmsiq)
+
+	/* %o0: devhandle
+	 * %o1: msinum
+	 * %o2:	msiq
+	 *
+	 * returns %o0: status
+	 */
+ENTRY(pci_sun4v_msg_setmsiq)
+	mov	HV_FAST_PCI_MSG_SETMSIQ, %o5
+	ta	HV_FAST_TRAP
+	retl
+	 mov	%o0, %o0
+ENDPROC(pci_sun4v_msg_setmsiq)
+
+	/* %o0: devhandle
+	 * %o1: msinum
+	 * %o2:	&valid
+	 *
+	 * returns %o0: status
+	 */
+ENTRY(pci_sun4v_msg_getvalid)
+	mov	HV_FAST_PCI_MSG_GETVALID, %o5
+	ta	HV_FAST_TRAP
+	stx	%o1, [%o2]
+	retl
+	 mov	%o0, %o0
+ENDPROC(pci_sun4v_msg_getvalid)
+
+	/* %o0: devhandle
+	 * %o1: msinum
+	 * %o2:	valid
+	 *
+	 * returns %o0: status
+	 */
+ENTRY(pci_sun4v_msg_setvalid)
+	mov	HV_FAST_PCI_MSG_SETVALID, %o5
+	ta	HV_FAST_TRAP
+	retl
+	 mov	%o0, %o0
+ENDPROC(pci_sun4v_msg_setvalid)
+
+	/*
+	 * %o0:	devhandle
+	 * %o1:	r_addr
+	 * %o2:	size
+	 * %o3:	pagesize
+	 * %o4:	virt
+	 * %o5: &iotsb_num/&iotsb_handle
+	 *
+	 * returns %o0:	status
+	 *         %o1:	iotsb_num/iotsb_handle
+	 */
+ENTRY(pci_sun4v_iotsb_conf)
+	mov	%o5, %g1
+	mov	HV_FAST_PCI_IOTSB_CONF, %o5
+	ta	HV_FAST_TRAP
+	retl
+	 stx	%o1, [%g1]
+ENDPROC(pci_sun4v_iotsb_conf)
+
+	/*
+	 * %o0:	devhandle
+	 * %o1:	iotsb_num/iotsb_handle
+	 * %o2:	pci_device
+	 *
+	 * returns %o0:	status
+	 */
+ENTRY(pci_sun4v_iotsb_bind)
+	mov	HV_FAST_PCI_IOTSB_BIND, %o5
+	ta	HV_FAST_TRAP
+	retl
+	 nop
+ENDPROC(pci_sun4v_iotsb_bind)
+
+	/*
+	 * %o0:	devhandle
+	 * %o1:	iotsb_num/iotsb_handle
+	 * %o2:	index_count
+	 * %o3:	iotte_attributes
+	 * %o4:	io_page_list_p
+	 * %o5: &mapped
+	 *
+	 * returns %o0:	status
+	 *         %o1:	#mapped
+	 */
+ENTRY(pci_sun4v_iotsb_map)
+	mov	%o5, %g1
+	mov	HV_FAST_PCI_IOTSB_MAP, %o5
+	ta	HV_FAST_TRAP
+	retl
+	 stx	%o1, [%g1]
+ENDPROC(pci_sun4v_iotsb_map)
+
+	/*
+	 * %o0:	devhandle
+	 * %o1:	iotsb_num/iotsb_handle
+	 * %o2:	iotsb_index
+	 * %o3:	#iottes
+	 * %o4: &demapped
+	 *
+	 * returns %o0:	status
+	 *         %o1:	#demapped
+	 */
+ENTRY(pci_sun4v_iotsb_demap)
+	mov	HV_FAST_PCI_IOTSB_DEMAP, %o5
+	ta	HV_FAST_TRAP
+	retl
+	 stx	%o1, [%o4]
+ENDPROC(pci_sun4v_iotsb_demap)
-- 
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