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o Move the buswide_ctxs bitmap to iommu_unit and rename related functions.

Browse Source 
o Rename bus_dma_dmar_load_ident() as well.

Reviewed by:	kib
Sponsored by:	DARPA/AFRL
Differential Revision:	https://reviews.freebsd.org/D25852
This commit is contained in:
Ruslan Bukin 2020-07-28 16:08:14 +00:00
parent c7f893a42b
commit ea4c01156a
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=363650
9 changed files with 33 additions and 33 deletions
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8
sys/dev/iommu/busdma_iommu.c
View File

@ -299,7 +299,7 @@ acpi_iommu_get_dma_tag(device_t dev, device_t child)
}
bool
bus_dma_dmar_set_buswide(device_t dev)
bus_dma_iommu_set_buswide(device_t dev)
{
struct iommu_unit *unit;
device_t parent;
@ -317,12 +317,12 @@ bus_dma_dmar_set_buswide(device_t dev)
if (slot != 0 || func != 0) {
if (bootverbose) {
device_printf(dev,
"dmar%d pci%d:%d:%d requested buswide busdma\n",
"iommu%d pci%d:%d:%d requested buswide busdma\n",
unit->unit, busno, slot, func);
}
return (false);
}
dmar_set_buswide_ctx(unit, busno);
iommu_set_buswide_ctx(unit, busno);
return (true);
}
@ -987,7 +987,7 @@ iommu_fini_busdma(struct iommu_unit *unit)
}
int
bus_dma_dmar_load_ident(bus_dma_tag_t dmat, bus_dmamap_t map1,
bus_dma_iommu_load_ident(bus_dma_tag_t dmat, bus_dmamap_t map1,
vm_paddr_t start, vm_size_t length, int flags)
{
struct bus_dma_tag_common *tc;

12
sys/dev/iommu/iommu.h
View File

@ -34,11 +34,13 @@
#ifndef _SYS_IOMMU_H_
#define _SYS_IOMMU_H_
#include <sys/types.h>
#include <sys/queue.h>
#include <sys/sysctl.h>
#include <sys/taskqueue.h>
#include <sys/tree.h>
#include <sys/types.h>
#include <dev/pci/pcireg.h>
/* Host or physical memory address, after translation. */
typedef uint64_t iommu_haddr_t;
@ -96,6 +98,14 @@ struct iommu_unit {
struct task dmamap_load_task;
TAILQ_HEAD(, bus_dmamap_iommu) delayed_maps;
struct taskqueue *delayed_taskqueue;
/*
* Bitmap of buses for which context must ignore slot:func,
* duplicating the page table pointer into all context table
* entries. This is a client-controlled quirk to support some
* NTBs.
*/
uint32_t buswide_ctxs[(PCI_BUSMAX + 1) / NBBY / sizeof(uint32_t)];
};
/*

2
sys/dev/ntb/ntb_hw/ntb_hw_intel.c
View File

@ -811,7 +811,7 @@ intel_ntb_map_pci_bars(struct ntb_softc *ntb)
device_printf(ntb->device, "Unable to create BAR0 map\n");
return (ENOMEM);
}
if (bus_dma_dmar_load_ident(ntb->bar0_dma_tag, ntb->bar0_dma_map,
if (bus_dma_iommu_load_ident(ntb->bar0_dma_tag, ntb->bar0_dma_map,
bar->pbase, bar->size, 0)) {
device_printf(ntb->device, "Unable to load BAR0 map\n");
return (ENOMEM);

2
sys/dev/ntb/ntb_hw/ntb_hw_plx.c
View File

@ -343,7 +343,7 @@ ntb_plx_attach(device_t dev)
* The device occupies whole bus. In translated TLP slot field
* keeps LUT index (original bus/slot), function is passed through.
*/
bus_dma_dmar_set_buswide(dev);
bus_dma_iommu_set_buswide(dev);
/* Identify chip port we are connected to. */
val = bus_read_4(sc->conf_res, 0x360);

4
sys/x86/include/bus_dma.h
View File

@ -192,8 +192,8 @@ _bus_dmamap_complete(bus_dma_tag_t dmat, bus_dmamap_t map,
}
#ifdef _KERNEL
bool bus_dma_dmar_set_buswide(device_t dev);
int bus_dma_dmar_load_ident(bus_dma_tag_t dmat, bus_dmamap_t map,
bool bus_dma_iommu_set_buswide(device_t dev);
int bus_dma_iommu_load_ident(bus_dma_tag_t dmat, bus_dmamap_t map,
vm_paddr_t start, vm_size_t length, int flags);
#endif

8
sys/x86/iommu/intel_ctx.c
View File

@ -196,7 +196,7 @@ ctx_id_entry_init(struct dmar_ctx *ctx, dmar_ctx_entry_t *ctxp, bool move,
IOMMU_PGF_NOALLOC);
}
if (dmar_is_buswide_ctx(unit, busno)) {
if (iommu_is_buswide_ctx((struct iommu_unit *)unit, busno)) {
MPASS(!move);
for (i = 0; i <= PCI_BUSMAX; i++) {
ctx_id_entry_init_one(&ctxp[i], domain, ctx_root);
@ -464,6 +464,7 @@ dmar_get_ctx_for_dev1(struct dmar_unit *dmar, device_t dev, uint16_t rid,
{
struct dmar_domain *domain, *domain1;
struct dmar_ctx *ctx, *ctx1;
struct iommu_unit *unit;
dmar_ctx_entry_t *ctxp;
struct sf_buf *sf;
int bus, slot, func, error;
@ -480,9 +481,10 @@ dmar_get_ctx_for_dev1(struct dmar_unit *dmar, device_t dev, uint16_t rid,
}
enable = false;
TD_PREP_PINNED_ASSERT;
unit = (struct iommu_unit *)dmar;
DMAR_LOCK(dmar);
KASSERT(!dmar_is_buswide_ctx(dmar, bus) || (slot == 0 && func == 0),
("dmar%d pci%d:%d:%d get_ctx for buswide", dmar->iommu.unit, bus,
KASSERT(!iommu_is_buswide_ctx(unit, bus) || (slot == 0 && func == 0),
("iommu%d pci%d:%d:%d get_ctx for buswide", dmar->iommu.unit, bus,
slot, func));
ctx = dmar_find_ctx_locked(dmar, rid);
error = 0;

13
sys/x86/iommu/intel_dmar.h
View File

@ -167,15 +167,6 @@ struct dmar_unit {
struct iommu_map_entries_tailq tlb_flush_entries;
struct task qi_task;
struct taskqueue *qi_taskqueue;
/*
* Bitmap of buses for which context must ignore slot:func,
* duplicating the page table pointer into all context table
* entries. This is a client-controlled quirk to support some
* NTBs.
*/
uint32_t buswide_ctxs[(PCI_BUSMAX + 1) / NBBY / sizeof(uint32_t)];
};
#define DMAR_LOCK(dmar) mtx_lock(&(dmar)->iommu.lock)
@ -290,8 +281,8 @@ void dmar_quirks_pre_use(struct iommu_unit *dmar);
int dmar_init_irt(struct dmar_unit *unit);
void dmar_fini_irt(struct dmar_unit *unit);
void dmar_set_buswide_ctx(struct iommu_unit *unit, u_int busno);
bool dmar_is_buswide_ctx(struct dmar_unit *unit, u_int busno);
void iommu_set_buswide_ctx(struct iommu_unit *unit, u_int busno);
bool iommu_is_buswide_ctx(struct iommu_unit *unit, u_int busno);
extern iommu_haddr_t dmar_high;
extern int haw;

13
sys/x86/iommu/intel_drv.c
View File

@ -593,21 +593,18 @@ DRIVER_MODULE(dmar, acpi, dmar_driver, dmar_devclass, 0, 0);
MODULE_DEPEND(dmar, acpi, 1, 1, 1);
void
dmar_set_buswide_ctx(struct iommu_unit *unit, u_int busno)
iommu_set_buswide_ctx(struct iommu_unit *unit, u_int busno)
{
struct dmar_unit *dmar;
dmar = (struct dmar_unit *)unit;
MPASS(busno <= PCI_BUSMAX);
DMAR_LOCK(dmar);
dmar->buswide_ctxs[busno / NBBY / sizeof(uint32_t)] |=
IOMMU_LOCK(unit);
unit->buswide_ctxs[busno / NBBY / sizeof(uint32_t)] |=
1 << (busno % (NBBY * sizeof(uint32_t)));
DMAR_UNLOCK(dmar);
IOMMU_UNLOCK(unit);
}
bool
dmar_is_buswide_ctx(struct dmar_unit *unit, u_int busno)
iommu_is_buswide_ctx(struct iommu_unit *unit, u_int busno)
{
MPASS(busno <= PCI_BUSMAX);

4
sys/x86/x86/busdma_machdep.c
View File

@ -301,13 +301,13 @@ bus_dma_tag_destroy(bus_dma_tag_t dmat)
#ifndef ACPI_DMAR
bool
bus_dma_dmar_set_buswide(device_t dev)
bus_dma_iommu_set_buswide(device_t dev)
{
return (false);
}
int
bus_dma_dmar_load_ident(bus_dma_tag_t dmat, bus_dmamap_t map,
bus_dma_iommu_load_ident(bus_dma_tag_t dmat, bus_dmamap_t map,
vm_paddr_t start, vm_size_t length, int flags)
{
return (0);