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dmaengine updates for v6.4 

New support:
  - Apple admac t8112 device support
  - StarFive JH7110 DMA controller
 
  Updates:
  - Big pile of idxd updates to support IAA 2.0 device capabilities, DSA
    2.0 Event Log and completion record faulting features and new DSA
    operations
  - at_xdmac supend & resume updates and driver code cleanup
  - k3-udma supend & resume support
  - k3-psil thread support for J784s4
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Merge tag 'dmaengine-6.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine

Pull dmaengine updates from Vinod Koul:
 "New support:

   - Apple admac t8112 device support

   - StarFive JH7110 DMA controller

  Updates:

   - Big pile of idxd updates to support IAA 2.0 device capabilities,
     DSA 2.0 Event Log and completion record faulting features and
     new DSA operations

   - at_xdmac supend & resume updates and driver code cleanup

   - k3-udma supend & resume support

   - k3-psil thread support for J784s4"

* tag 'dmaengine-6.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine: (57 commits)
  dmaengine: idxd: add per wq PRS disable
  dmaengine: idxd: add pid to exported sysfs attribute for opened file
  dmaengine: idxd: expose fault counters to sysfs
  dmaengine: idxd: add a device to represent the file opened
  dmaengine: idxd: add per file user counters for completion record faults
  dmaengine: idxd: process batch descriptor completion record faults
  dmaengine: idxd: add descs_completed field for completion record
  dmaengine: idxd: process user page faults for completion record
  dmaengine: idxd: add idxd_copy_cr() to copy user completion record during page fault handling
  dmaengine: idxd: create kmem cache for event log fault items
  dmaengine: idxd: add per DSA wq workqueue for processing cr faults
  dmanegine: idxd: add debugfs for event log dump
  dmaengine: idxd: add interrupt handling for event log
  dmaengine: idxd: setup event log configuration
  dmaengine: idxd: add event log size sysfs attribute
  dmaengine: idxd: make misc interrupt one shot
  dt-bindings: dma: snps,dw-axi-dmac: constrain the items of resets for JH7110 dma
  dt-bindings: dma: Drop unneeded quotes
  dmaengine: at_xdmac: align declaration of ret with the rest of variables
  dmaengine: at_xdmac: add a warning message regarding for unpaused channels
  ...
This commit is contained in:
Linus Torvalds 2023-05-03 11:11:56 -07:00
parent 29ee463d6f f2dc327131
commit 7994beabfb
42 changed files with 1863 additions and 260 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

51
Documentation/ABI/stable/sysfs-driver-dma-idxd
View File

@ -136,6 +136,22 @@ Description: The last executed device administrative command's status/error.
Also last configuration error overloaded.
Writing to it will clear the status.
What: /sys/bus/dsa/devices/dsa<m>/iaa_cap
Date: Sept 14, 2022
KernelVersion: 6.0.0
Contact: dmaengine@vger.kernel.org
Description: IAA (IAX) capability mask. Exported to user space for application
consumption. This attribute should only be visible on IAA devices
that are version 2 or later.
What: /sys/bus/dsa/devices/dsa<m>/event_log_size
Date: Sept 14, 2022
KernelVersion: 6.4.0
Contact: dmaengine@vger.kernel.org
Description: The event log size to be configured. Default is 64 entries and
occupies 4k size if the evl entry is 64 bytes. It's visible
only on platforms that support the capability.
What: /sys/bus/dsa/devices/wq<m>.<n>/block_on_fault
Date: Oct 27, 2020
KernelVersion: 5.11.0
@ -219,6 +235,16 @@ Contact: dmaengine@vger.kernel.org
Description: Indicate whether ATS disable is turned on for the workqueue.
0 indicates ATS is on, and 1 indicates ATS is off for the workqueue.
What: /sys/bus/dsa/devices/wq<m>.<n>/prs_disable
Date: Sept 14, 2022
KernelVersion: 6.4.0
Contact: dmaengine@vger.kernel.org
Description: Controls whether PRS disable is turned on for the workqueue.
0 indicates PRS is on, and 1 indicates PRS is off for the
workqueue. This option overrides block_on_fault attribute
if set. It's visible only on platforms that support the
capability.
What: /sys/bus/dsa/devices/wq<m>.<n>/occupancy
Date May 25, 2021
KernelVersion: 5.14.0
@ -302,3 +328,28 @@ Description: Allows control of the number of batch descriptors that can be
1 (1/2 of max value), 2 (1/4 of the max value), and 3 (1/8 of
the max value). It's visible only on platforms that support
the capability.
What: /sys/bus/dsa/devices/wq<m>.<n>/dsa<x>\!wq<m>.<n>/file<y>/cr_faults
Date: Sept 14, 2022
KernelVersion: 6.4.0
Contact: dmaengine@vger.kernel.org
Description: Show the number of Completion Record (CR) faults this application
has caused.
What: /sys/bus/dsa/devices/wq<m>.<n>/dsa<x>\!wq<m>.<n>/file<y>/cr_fault_failures
Date: Sept 14, 2022
KernelVersion: 6.4.0
Contact: dmaengine@vger.kernel.org
Description: Show the number of Completion Record (CR) faults failures that this
application has caused. The failure counter is incremented when the
driver cannot fault in the address for the CR. Typically this is caused
by a bad address programmed in the submitted descriptor or a malicious
submitter is using bad CR address on purpose.
What: /sys/bus/dsa/devices/wq<m>.<n>/dsa<x>\!wq<m>.<n>/file<y>/pid
Date: Sept 14, 2022
KernelVersion: 6.4.0
Contact: dmaengine@vger.kernel.org
Description: Show the process id of the application that opened the file. This is
helpful information for a monitor daemon that wants to kill the
application that opened the file.

1
Documentation/devicetree/bindings/dma/apple,admac.yaml
View File

@ -26,6 +26,7 @@ properties:
- enum:
- apple,t6000-admac
- apple,t8103-admac
- apple,t8112-admac
- const: apple,admac
reg:

1
Documentation/devicetree/bindings/dma/qcom,gpi.yaml
View File

@ -24,6 +24,7 @@ properties:
- qcom,sm6350-gpi-dma
- items:
- enum:
- qcom,qcm2290-gpi-dma
- qcom,qdu1000-gpi-dma
- qcom,sc7280-gpi-dma
- qcom,sm6115-gpi-dma

14
Documentation/devicetree/bindings/dma/renesas,rz-dmac.yaml
View File

@ -54,6 +54,11 @@ properties:
- description: DMA main clock
- description: DMA register access clock
clock-names:
items:
- const: main
- const: register
'#dma-cells':
const: 1
description:
@ -77,16 +82,23 @@ properties:
- description: Reset for DMA ARESETN reset terminal
- description: Reset for DMA RST_ASYNC reset terminal
reset-names:
items:
- const: arst
- const: rst_async
required:
- compatible
- reg
- interrupts
- interrupt-names
- clocks
- clock-names
- '#dma-cells'
- dma-channels
- power-domains
- resets
- reset-names
additionalProperties: false
@ -124,9 +136,11 @@ examples:
"ch12", "ch13", "ch14", "ch15";
clocks = <&cpg CPG_MOD R9A07G044_DMAC_ACLK>,
<&cpg CPG_MOD R9A07G044_DMAC_PCLK>;
clock-names = "main", "register";
power-domains = <&cpg>;
resets = <&cpg R9A07G044_DMAC_ARESETN>,
<&cpg R9A07G044_DMAC_RST_ASYNC>;
reset-names = "arst", "rst_async";
#dma-cells = <1>;
dma-channels = <16>;
};

23
Documentation/devicetree/bindings/dma/snps,dw-axi-dmac.yaml
View File

@ -20,6 +20,7 @@ properties:
enum:
- snps,axi-dma-1.01a
- intel,kmb-axi-dma
- starfive,jh7110-axi-dma
reg:
minItems: 1
@ -58,7 +59,8 @@ properties:
maximum: 8
resets:
maxItems: 1
minItems: 1
maxItems: 2
snps,dma-masters:
description: |
@ -109,6 +111,25 @@ required:
- snps,priority
- snps,block-size
if:
properties:
compatible:
contains:
enum:
- starfive,jh7110-axi-dma
then:
properties:
resets:
minItems: 2
items:
- description: AXI reset line
- description: AHB reset line
- description: module reset
else:
properties:
resets:
maxItems: 1
additionalProperties: false
examples:

2
Documentation/devicetree/bindings/dma/ti/k3-udma.yaml
View File

@ -43,7 +43,7 @@ description: |
configuration of the legacy peripheral.
allOf:
- $ref: "../dma-controller.yaml#"
- $ref: ../dma-controller.yaml#
- $ref: /schemas/arm/keystone/ti,k3-sci-common.yaml#
properties:

2
Documentation/devicetree/bindings/dma/xilinx/xlnx,zynqmp-dma-1.0.yaml
View File

@ -15,7 +15,7 @@ maintainers:
- Michael Tretter <m.tretter@pengutronix.de>
allOf:
- $ref: "../dma-controller.yaml#"
- $ref: ../dma-controller.yaml#
properties:
"#dma-cells":

2
Documentation/devicetree/bindings/dma/xilinx/xlnx,zynqmp-dpdma.yaml
View File

@ -16,7 +16,7 @@ maintainers:
- Laurent Pinchart <laurent.pinchart@ideasonboard.com>
allOf:
- $ref: "../dma-controller.yaml#"
- $ref: ../dma-controller.yaml#
properties:
"#dma-cells":

1
drivers/dma/Kconfig
View File

@ -623,6 +623,7 @@ config TEGRA186_GPC_DMA
depends on (ARCH_TEGRA || COMPILE_TEST) && ARCH_DMA_ADDR_T_64BIT
depends on IOMMU_API
select DMA_ENGINE
select DMA_VIRTUAL_CHANNELS
help
Support for the NVIDIA Tegra General Purpose Central DMA controller.
The DMA controller has multiple DMA channels which can be configured

107
drivers/dma/at_xdmac.c
View File

@ -187,6 +187,7 @@
enum atc_status {
AT_XDMAC_CHAN_IS_CYCLIC = 0,
AT_XDMAC_CHAN_IS_PAUSED,
AT_XDMAC_CHAN_IS_PAUSED_INTERNAL,
};
struct at_xdmac_layout {
@ -245,6 +246,7 @@ struct at_xdmac {
int irq;
struct clk *clk;
u32 save_gim;
u32 save_gs;
struct dma_pool *at_xdmac_desc_pool;
const struct at_xdmac_layout *layout;
struct at_xdmac_chan chan[];
@ -347,6 +349,11 @@ static inline int at_xdmac_chan_is_paused(struct at_xdmac_chan *atchan)
return test_bit(AT_XDMAC_CHAN_IS_PAUSED, &atchan->status);
}
static inline int at_xdmac_chan_is_paused_internal(struct at_xdmac_chan *atchan)
{
return test_bit(AT_XDMAC_CHAN_IS_PAUSED_INTERNAL, &atchan->status);
}
static inline bool at_xdmac_chan_is_peripheral_xfer(u32 cfg)
{
return cfg & AT_XDMAC_CC_TYPE_PER_TRAN;
@ -412,7 +419,7 @@ static bool at_xdmac_chan_is_enabled(struct at_xdmac_chan *atchan)
return ret;
}
static void at_xdmac_off(struct at_xdmac *atxdmac)
static void at_xdmac_off(struct at_xdmac *atxdmac, bool suspend_descriptors)
{
struct dma_chan *chan, *_chan;
struct at_xdmac_chan *atchan;
@ -431,7 +438,7 @@ static void at_xdmac_off(struct at_xdmac *atxdmac)
at_xdmac_write(atxdmac, AT_XDMAC_GID, -1L);
/* Decrement runtime PM ref counter for each active descriptor. */
if (!list_empty(&atxdmac->dma.channels)) {
if (!list_empty(&atxdmac->dma.channels) && suspend_descriptors) {
list_for_each_entry_safe(chan, _chan, &atxdmac->dma.channels,
device_node) {
atchan = to_at_xdmac_chan(chan);
@ -1898,6 +1905,26 @@ static int at_xdmac_device_config(struct dma_chan *chan,
return ret;
}
static void at_xdmac_device_pause_set(struct at_xdmac *atxdmac,
struct at_xdmac_chan *atchan)
{
at_xdmac_write(atxdmac, atxdmac->layout->grws, atchan->mask);
while (at_xdmac_chan_read(atchan, AT_XDMAC_CC) &
(AT_XDMAC_CC_WRIP | AT_XDMAC_CC_RDIP))
cpu_relax();
}
static void at_xdmac_device_pause_internal(struct at_xdmac_chan *atchan)
{
struct at_xdmac *atxdmac = to_at_xdmac(atchan->chan.device);
unsigned long flags;
spin_lock_irqsave(&atchan->lock, flags);
set_bit(AT_XDMAC_CHAN_IS_PAUSED_INTERNAL, &atchan->status);
at_xdmac_device_pause_set(atxdmac, atchan);
spin_unlock_irqrestore(&atchan->lock, flags);
}
static int at_xdmac_device_pause(struct dma_chan *chan)
{
struct at_xdmac_chan *atchan = to_at_xdmac_chan(chan);
@ -1915,11 +1942,8 @@ static int at_xdmac_device_pause(struct dma_chan *chan)
return ret;
spin_lock_irqsave(&atchan->lock, flags);
at_xdmac_write(atxdmac, atxdmac->layout->grws, atchan->mask);
while (at_xdmac_chan_read(atchan, AT_XDMAC_CC)
& (AT_XDMAC_CC_WRIP | AT_XDMAC_CC_RDIP))
cpu_relax();
at_xdmac_device_pause_set(atxdmac, atchan);
/* Decrement runtime PM ref counter for each active descriptor. */
at_xdmac_runtime_suspend_descriptors(atchan);
@ -1931,6 +1955,17 @@ static int at_xdmac_device_pause(struct dma_chan *chan)
return 0;
}
static void at_xdmac_device_resume_internal(struct at_xdmac_chan *atchan)
{
struct at_xdmac *atxdmac = to_at_xdmac(atchan->chan.device);
unsigned long flags;
spin_lock_irqsave(&atchan->lock, flags);
at_xdmac_write(atxdmac, atxdmac->layout->grwr, atchan->mask);
clear_bit(AT_XDMAC_CHAN_IS_PAUSED_INTERNAL, &atchan->status);
spin_unlock_irqrestore(&atchan->lock, flags);
}
static int at_xdmac_device_resume(struct dma_chan *chan)
{
struct at_xdmac_chan *atchan = to_at_xdmac_chan(chan);
@ -2118,19 +2153,26 @@ static int __maybe_unused atmel_xdmac_suspend(struct device *dev)
atchan->save_cc = at_xdmac_chan_read(atchan, AT_XDMAC_CC);
if (at_xdmac_chan_is_cyclic(atchan)) {
if (!at_xdmac_chan_is_paused(atchan))
at_xdmac_device_pause(chan);
if (!at_xdmac_chan_is_paused(atchan)) {
dev_warn(chan2dev(chan), "%s: channel %d not paused\n",
__func__, chan->chan_id);
at_xdmac_device_pause_internal(atchan);
at_xdmac_runtime_suspend_descriptors(atchan);
}
atchan->save_cim = at_xdmac_chan_read(atchan, AT_XDMAC_CIM);
atchan->save_cnda = at_xdmac_chan_read(atchan, AT_XDMAC_CNDA);
atchan->save_cndc = at_xdmac_chan_read(atchan, AT_XDMAC_CNDC);
}
at_xdmac_runtime_suspend_descriptors(atchan);
}
atxdmac->save_gim = at_xdmac_read(atxdmac, AT_XDMAC_GIM);
atxdmac->save_gs = at_xdmac_read(atxdmac, AT_XDMAC_GS);
at_xdmac_off(atxdmac);
return pm_runtime_force_suspend(atxdmac->dev);
at_xdmac_off(atxdmac, false);
pm_runtime_mark_last_busy(atxdmac->dev);
pm_runtime_put_noidle(atxdmac->dev);
clk_disable_unprepare(atxdmac->clk);
return 0;
}
static int __maybe_unused atmel_xdmac_resume(struct device *dev)
@ -2139,13 +2181,14 @@ static int __maybe_unused atmel_xdmac_resume(struct device *dev)
struct at_xdmac_chan *atchan;
struct dma_chan *chan, *_chan;
struct platform_device *pdev = container_of(dev, struct platform_device, dev);
int i;
int ret;
int i, ret;
ret = pm_runtime_force_resume(atxdmac->dev);
if (ret < 0)
ret = clk_prepare_enable(atxdmac->clk);
if (ret)
return ret;
pm_runtime_get_noresume(atxdmac->dev);
at_xdmac_axi_config(pdev);
/* Clear pending interrupts. */
@ -2159,19 +2202,33 @@ static int __maybe_unused atmel_xdmac_resume(struct device *dev)
list_for_each_entry_safe(chan, _chan, &atxdmac->dma.channels, device_node) {
atchan = to_at_xdmac_chan(chan);
ret = at_xdmac_runtime_resume_descriptors(atchan);
if (ret < 0)
return ret;
at_xdmac_chan_write(atchan, AT_XDMAC_CC, atchan->save_cc);
if (at_xdmac_chan_is_cyclic(atchan)) {
if (at_xdmac_chan_is_paused(atchan))
at_xdmac_device_resume(chan);
/*
* Resume only channels not explicitly paused by
* consumers.
*/
if (at_xdmac_chan_is_paused_internal(atchan)) {
ret = at_xdmac_runtime_resume_descriptors(atchan);
if (ret < 0)
return ret;
at_xdmac_device_resume_internal(atchan);
}
/*
* We may resume from a deep sleep state where power
* to DMA controller is cut-off. Thus, restore the
* suspend state of channels set though dmaengine API.
*/
else if (at_xdmac_chan_is_paused(atchan))
at_xdmac_device_pause_set(atxdmac, atchan);
at_xdmac_chan_write(atchan, AT_XDMAC_CNDA, atchan->save_cnda);
at_xdmac_chan_write(atchan, AT_XDMAC_CNDC, atchan->save_cndc);
at_xdmac_chan_write(atchan, AT_XDMAC_CIE, atchan->save_cim);
wmb();
at_xdmac_write(atxdmac, AT_XDMAC_GE, atchan->mask);
if (atxdmac->save_gs & atchan->mask)
at_xdmac_write(atxdmac, AT_XDMAC_GE, atchan->mask);
}
}
@ -2312,7 +2369,7 @@ static int at_xdmac_probe(struct platform_device *pdev)
INIT_LIST_HEAD(&atxdmac->dma.channels);
/* Disable all chans and interrupts. */
at_xdmac_off(atxdmac);
at_xdmac_off(atxdmac, true);
for (i = 0; i < nr_channels; i++) {
struct at_xdmac_chan *atchan = &atxdmac->chan[i];
@ -2376,7 +2433,7 @@ static int at_xdmac_remove(struct platform_device *pdev)
struct at_xdmac *atxdmac = (struct at_xdmac *)platform_get_drvdata(pdev);
int i;
at_xdmac_off(atxdmac);
at_xdmac_off(atxdmac, true);
of_dma_controller_free(pdev->dev.of_node);
dma_async_device_unregister(&atxdmac->dma);
pm_runtime_disable(atxdmac->dev);

19
drivers/dma/bestcomm/sram.c
View File

@ -38,7 +38,7 @@ int bcom_sram_init(struct device_node *sram_node, char *owner)
{
int rv;
const u32 *regaddr_p;
u64 regaddr64, size64;
struct resource res;
unsigned int psize;
/* Create our state struct */
@ -56,21 +56,18 @@ int bcom_sram_init(struct device_node *sram_node, char *owner)
}
/* Get address and size of the sram */
regaddr_p = of_get_address(sram_node, 0, &size64, NULL);
if (!regaddr_p) {
rv = of_address_to_resource(sram_node, 0, &res);
if (rv) {
printk(KERN_ERR "%s: bcom_sram_init: "
"Invalid device node !\n", owner);
rv = -EINVAL;
goto error_free;
}
regaddr64 = of_translate_address(sram_node, regaddr_p);
bcom_sram->base_phys = (phys_addr_t) regaddr64;
bcom_sram->size = (unsigned int) size64;
bcom_sram->base_phys = res.start;
bcom_sram->size = resource_size(&res);
/* Request region */
if (!request_mem_region(bcom_sram->base_phys, bcom_sram->size, owner)) {
if (!request_mem_region(res.start, resource_size(&res), owner)) {
printk(KERN_ERR "%s: bcom_sram_init: "
"Couldn't request region !\n", owner);
rv = -EBUSY;
@ -79,7 +76,7 @@ int bcom_sram_init(struct device_node *sram_node, char *owner)
/* Map SRAM */
/* sram is not really __iomem */
bcom_sram->base_virt = (void*) ioremap(bcom_sram->base_phys, bcom_sram->size);
bcom_sram->base_virt = (void *)ioremap(res.start, resource_size(&res));
if (!bcom_sram->base_virt) {
printk(KERN_ERR "%s: bcom_sram_init: "
@ -120,7 +117,7 @@ int bcom_sram_init(struct device_node *sram_node, char *owner)
return 0;
error_release:
release_mem_region(bcom_sram->base_phys, bcom_sram->size);
release_mem_region(res.start, resource_size(&res));
error_free:
kfree(bcom_sram);
bcom_sram = NULL;

40
drivers/dma/dw-axi-dmac/dw-axi-dmac-platform.c
View File

@ -21,10 +21,12 @@
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/of_device.h>
#include <linux/of_dma.h>
#include <linux/platform_device.h>
#include <linux/pm_runtime.h>
#include <linux/property.h>
#include <linux/reset.h>
#include <linux/slab.h>
#include <linux/types.h>
@ -46,6 +48,10 @@
DMA_SLAVE_BUSWIDTH_32_BYTES | \
DMA_SLAVE_BUSWIDTH_64_BYTES)
#define AXI_DMA_FLAG_HAS_APB_REGS BIT(0)
#define AXI_DMA_FLAG_HAS_RESETS BIT(1)
#define AXI_DMA_FLAG_USE_CFG2 BIT(2)
static inline void
axi_dma_iowrite32(struct axi_dma_chip *chip, u32 reg, u32 val)
{
@ -86,7 +92,8 @@ static inline void axi_chan_config_write(struct axi_dma_chan *chan,
cfg_lo = (config->dst_multblk_type << CH_CFG_L_DST_MULTBLK_TYPE_POS |
config->src_multblk_type << CH_CFG_L_SRC_MULTBLK_TYPE_POS);
if (chan->chip->dw->hdata->reg_map_8_channels) {
if (chan->chip->dw->hdata->reg_map_8_channels &&
!chan->chip->dw->hdata->use_cfg2) {
cfg_hi = config->tt_fc << CH_CFG_H_TT_FC_POS |
config->hs_sel_src << CH_CFG_H_HS_SEL_SRC_POS |
config->hs_sel_dst << CH_CFG_H_HS_SEL_DST_POS |
@ -1140,7 +1147,7 @@ static int dma_chan_terminate_all(struct dma_chan *dchan)
axi_chan_disable(chan);
ret = readl_poll_timeout_atomic(chan->chip->regs + DMAC_CHEN, val,
!(val & chan_active), 1000, 10000);
!(val & chan_active), 1000, 50000);
if (ret == -ETIMEDOUT)
dev_warn(dchan2dev(dchan),
"%s failed to stop\n", axi_chan_name(chan));
@ -1367,10 +1374,11 @@ static int parse_device_properties(struct axi_dma_chip *chip)
static int dw_probe(struct platform_device *pdev)
{
struct device_node *node = pdev->dev.of_node;
struct axi_dma_chip *chip;
struct dw_axi_dma *dw;
struct dw_axi_dma_hcfg *hdata;
struct reset_control *resets;
unsigned int flags;
u32 i;
int ret;
@ -1398,12 +1406,25 @@ static int dw_probe(struct platform_device *pdev)
if (IS_ERR(chip->regs))
return PTR_ERR(chip->regs);
if (of_device_is_compatible(node, "intel,kmb-axi-dma")) {
flags = (uintptr_t)of_device_get_match_data(&pdev->dev);
if (flags & AXI_DMA_FLAG_HAS_APB_REGS) {
chip->apb_regs = devm_platform_ioremap_resource(pdev, 1);
if (IS_ERR(chip->apb_regs))
return PTR_ERR(chip->apb_regs);
}
if (flags & AXI_DMA_FLAG_HAS_RESETS) {
resets = devm_reset_control_array_get_exclusive(&pdev->dev);
if (IS_ERR(resets))
return PTR_ERR(resets);
ret = reset_control_deassert(resets);
if (ret)
return ret;
}
chip->dw->hdata->use_cfg2 = !!(flags & AXI_DMA_FLAG_USE_CFG2);
chip->core_clk = devm_clk_get(chip->dev, "core-clk");
if (IS_ERR(chip->core_clk))
return PTR_ERR(chip->core_clk);
@ -1554,8 +1575,15 @@ static const struct dev_pm_ops dw_axi_dma_pm_ops = {
};
static const struct of_device_id dw_dma_of_id_table[] = {
{ .compatible = "snps,axi-dma-1.01a" },
{ .compatible = "intel,kmb-axi-dma" },
{
.compatible = "snps,axi-dma-1.01a"
}, {
.compatible = "intel,kmb-axi-dma",
.data = (void *)AXI_DMA_FLAG_HAS_APB_REGS,
}, {
.compatible = "starfive,jh7110-axi-dma",
.data = (void *)(AXI_DMA_FLAG_HAS_RESETS | AXI_DMA_FLAG_USE_CFG2),
},
{}
};
MODULE_DEVICE_TABLE(of, dw_dma_of_id_table);

1
drivers/dma/dw-axi-dmac/dw-axi-dmac.h
View File

@ -33,6 +33,7 @@ struct dw_axi_dma_hcfg {
/* Register map for DMAX_NUM_CHANNELS <= 8 */
bool reg_map_8_channels;
bool restrict_axi_burst_len;
bool use_cfg2;
};
struct axi_dma_chan {

27
drivers/dma/dw-edma/dw-edma-core.c
View File

@ -181,7 +181,7 @@ static void vchan_free_desc(struct virt_dma_desc *vdesc)
dw_edma_free_desc(vd2dw_edma_desc(vdesc));
}
static void dw_edma_start_transfer(struct dw_edma_chan *chan)
static int dw_edma_start_transfer(struct dw_edma_chan *chan)
{
struct dw_edma_chunk *child;
struct dw_edma_desc *desc;
@ -189,16 +189,16 @@ static void dw_edma_start_transfer(struct dw_edma_chan *chan)
vd = vchan_next_desc(&chan->vc);
if (!vd)
return;
return 0;
desc = vd2dw_edma_desc(vd);
if (!desc)
return;
return 0;
child = list_first_entry_or_null(&desc->chunk->list,
struct dw_edma_chunk, list);
if (!child)
return;
return 0;
dw_edma_v0_core_start(child, !desc->xfer_sz);
desc->xfer_sz += child->ll_region.sz;
@ -206,6 +206,8 @@ static void dw_edma_start_transfer(struct dw_edma_chan *chan)
list_del(&child->list);
kfree(child);
desc->chunks_alloc--;
return 1;
}
static void dw_edma_device_caps(struct dma_chan *dchan,
@ -306,9 +308,12 @@ static void dw_edma_device_issue_pending(struct dma_chan *dchan)
struct dw_edma_chan *chan = dchan2dw_edma_chan(dchan);
unsigned long flags;
if (!chan->configured)
return;
spin_lock_irqsave(&chan->vc.lock, flags);
if (chan->configured && chan->request == EDMA_REQ_NONE &&
chan->status == EDMA_ST_IDLE && vchan_issue_pending(&chan->vc)) {
if (vchan_issue_pending(&chan->vc) && chan->request == EDMA_REQ_NONE &&
chan->status == EDMA_ST_IDLE) {
chan->status = EDMA_ST_BUSY;
dw_edma_start_transfer(chan);
}
@ -602,14 +607,14 @@ static void dw_edma_done_interrupt(struct dw_edma_chan *chan)
switch (chan->request) {
case EDMA_REQ_NONE:
desc = vd2dw_edma_desc(vd);
if (desc->chunks_alloc) {
chan->status = EDMA_ST_BUSY;
dw_edma_start_transfer(chan);
} else {
if (!desc->chunks_alloc) {
list_del(&vd->node);
vchan_cookie_complete(vd);
chan->status = EDMA_ST_IDLE;
}
/* Continue transferring if there are remaining chunks or issued requests.
*/
chan->status = dw_edma_start_transfer(chan) ? EDMA_ST_BUSY : EDMA_ST_IDLE;
break;
case EDMA_REQ_STOP:

56
drivers/dma/dw-edma/dw-edma-v0-core.c
View File

@ -159,62 +159,6 @@ static inline u32 readl_ch(struct dw_edma *dw, enum dw_edma_dir dir, u16 ch,
#define GET_CH_32(dw, dir, ch, name) \
readl_ch(dw, dir, ch, &(__dw_ch_regs(dw, dir, ch)->name))
static inline void writeq_ch(struct dw_edma *dw, enum dw_edma_dir dir, u16 ch,
u64 value, void __iomem *addr)
{
if (dw->chip->mf == EDMA_MF_EDMA_LEGACY) {
u32 viewport_sel;
unsigned long flags;
raw_spin_lock_irqsave(&dw->lock, flags);
viewport_sel = FIELD_PREP(EDMA_V0_VIEWPORT_MASK, ch);
if (dir == EDMA_DIR_READ)
viewport_sel |= BIT(31);
writel(viewport_sel,
&(__dw_regs(dw)->type.legacy.viewport_sel));
writeq(value, addr);
raw_spin_unlock_irqrestore(&dw->lock, flags);
} else {
writeq(value, addr);
}
}
static inline u64 readq_ch(struct dw_edma *dw, enum dw_edma_dir dir, u16 ch,
const void __iomem *addr)
{
u64 value;
if (dw->chip->mf == EDMA_MF_EDMA_LEGACY) {
u32 viewport_sel;
unsigned long flags;
raw_spin_lock_irqsave(&dw->lock, flags);
viewport_sel = FIELD_PREP(EDMA_V0_VIEWPORT_MASK, ch);
if (dir == EDMA_DIR_READ)
viewport_sel |= BIT(31);
writel(viewport_sel,
&(__dw_regs(dw)->type.legacy.viewport_sel));
value = readq(addr);
raw_spin_unlock_irqrestore(&dw->lock, flags);
} else {
value = readq(addr);
}
return value;
}
#define SET_CH_64(dw, dir, ch, name, value) \
writeq_ch(dw, dir, ch, value, &(__dw_ch_regs(dw, dir, ch)->name))
#define GET_CH_64(dw, dir, ch, name) \
readq_ch(dw, dir, ch, &(__dw_ch_regs(dw, dir, ch)->name))
/* eDMA management callbacks */
void dw_edma_v0_core_off(struct dw_edma *dw)
{

2
drivers/dma/idxd/Makefile
View File

@ -1,7 +1,7 @@
ccflags-y += -DDEFAULT_SYMBOL_NAMESPACE=IDXD
obj-$(CONFIG_INTEL_IDXD) += idxd.o
idxd-y := init.o irq.o device.o sysfs.o submit.o dma.o cdev.o
idxd-y := init.o irq.o device.o sysfs.o submit.o dma.o cdev.o debugfs.o
idxd-$(CONFIG_INTEL_IDXD_PERFMON) += perfmon.o

334
drivers/dma/idxd/cdev.c
View File

@ -11,7 +11,9 @@
#include <linux/fs.h>
#include <linux/poll.h>
#include <linux/iommu.h>
#include <linux/highmem.h>
#include <uapi/linux/idxd.h>
#include <linux/xarray.h>
#include "registers.h"
#include "idxd.h"
@ -21,6 +23,13 @@ struct idxd_cdev_context {
struct ida minor_ida;
};
/*
* Since user file names are global in DSA devices, define their ida's as
* global to avoid conflict file names.
*/
static DEFINE_IDA(file_ida);
static DEFINE_MUTEX(ida_lock);
/*
* ictx is an array based off of accelerator types. enum idxd_type
* is used as index
@ -34,8 +43,119 @@ struct idxd_user_context {
struct idxd_wq *wq;
struct task_struct *task;
unsigned int pasid;
struct mm_struct *mm;
unsigned int flags;
struct iommu_sva *sva;
struct idxd_dev idxd_dev;
u64 counters[COUNTER_MAX];
int id;
pid_t pid;
};
static void idxd_cdev_evl_drain_pasid(struct idxd_wq *wq, u32 pasid);
static void idxd_xa_pasid_remove(struct idxd_user_context *ctx);
static inline struct idxd_user_context *dev_to_uctx(struct device *dev)
{
struct idxd_dev *idxd_dev = confdev_to_idxd_dev(dev);
return container_of(idxd_dev, struct idxd_user_context, idxd_dev);
}
static ssize_t cr_faults_show(struct device *dev, struct device_attribute *attr, char *buf)
{
struct idxd_user_context *ctx = dev_to_uctx(dev);
return sysfs_emit(buf, "%llu\n", ctx->counters[COUNTER_FAULTS]);
}
static DEVICE_ATTR_RO(cr_faults);
static ssize_t cr_fault_failures_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct idxd_user_context *ctx = dev_to_uctx(dev);
return sysfs_emit(buf, "%llu\n", ctx->counters[COUNTER_FAULT_FAILS]);
}
static DEVICE_ATTR_RO(cr_fault_failures);
static ssize_t pid_show(struct device *dev, struct device_attribute *attr, char *buf)
{
struct idxd_user_context *ctx = dev_to_uctx(dev);
return sysfs_emit(buf, "%u\n", ctx->pid);
}
static DEVICE_ATTR_RO(pid);
static struct attribute *cdev_file_attributes[] = {
&dev_attr_cr_faults.attr,
&dev_attr_cr_fault_failures.attr,
&dev_attr_pid.attr,
NULL
};
static umode_t cdev_file_attr_visible(struct kobject *kobj, struct attribute *a, int n)
{
struct device *dev = container_of(kobj, typeof(*dev), kobj);
struct idxd_user_context *ctx = dev_to_uctx(dev);
struct idxd_wq *wq = ctx->wq;
if (!wq_pasid_enabled(wq))
return 0;
return a->mode;
}
static const struct attribute_group cdev_file_attribute_group = {
.attrs = cdev_file_attributes,
.is_visible = cdev_file_attr_visible,
};
static const struct attribute_group *cdev_file_attribute_groups[] = {
&cdev_file_attribute_group,
NULL
};
static void idxd_file_dev_release(struct device *dev)
{
struct idxd_user_context *ctx = dev_to_uctx(dev);
struct idxd_wq *wq = ctx->wq;
struct idxd_device *idxd = wq->idxd;
int rc;
mutex_lock(&ida_lock);
ida_free(&file_ida, ctx->id);
mutex_unlock(&ida_lock);
/* Wait for in-flight operations to complete. */
if (wq_shared(wq)) {
idxd_device_drain_pasid(idxd, ctx->pasid);
} else {
if (device_user_pasid_enabled(idxd)) {
/* The wq disable in the disable pasid function will drain the wq */
rc = idxd_wq_disable_pasid(wq);
if (rc < 0)
dev_err(dev, "wq disable pasid failed.\n");
} else {
idxd_wq_drain(wq);
}
}
if (ctx->sva) {
idxd_cdev_evl_drain_pasid(wq, ctx->pasid);
iommu_sva_unbind_device(ctx->sva);
idxd_xa_pasid_remove(ctx);
}
kfree(ctx);
mutex_lock(&wq->wq_lock);
idxd_wq_put(wq);
mutex_unlock(&wq->wq_lock);
}
static struct device_type idxd_cdev_file_type = {
.name = "idxd_file",
.release = idxd_file_dev_release,
.groups = cdev_file_attribute_groups,
};
static void idxd_cdev_dev_release(struct device *dev)
@ -68,15 +188,46 @@ static inline struct idxd_wq *inode_wq(struct inode *inode)
return idxd_cdev->wq;
}
static void idxd_xa_pasid_remove(struct idxd_user_context *ctx)
{
struct idxd_wq *wq = ctx->wq;
void *ptr;
mutex_lock(&wq->uc_lock);
ptr = xa_cmpxchg(&wq->upasid_xa, ctx->pasid, ctx, NULL, GFP_KERNEL);
if (ptr != (void *)ctx)
dev_warn(&wq->idxd->pdev->dev, "xarray cmpxchg failed for pasid %u\n",
ctx->pasid);
mutex_unlock(&wq->uc_lock);
}
void idxd_user_counter_increment(struct idxd_wq *wq, u32 pasid, int index)
{
struct idxd_user_context *ctx;
if (index >= COUNTER_MAX)
return;
mutex_lock(&wq->uc_lock);
ctx = xa_load(&wq->upasid_xa, pasid);
if (!ctx) {
mutex_unlock(&wq->uc_lock);
return;
}
ctx->counters[index]++;
mutex_unlock(&wq->uc_lock);
}
static int idxd_cdev_open(struct inode *inode, struct file *filp)
{
struct idxd_user_context *ctx;
struct idxd_device *idxd;
struct idxd_wq *wq;
struct device *dev;
struct device *dev, *fdev;
int rc = 0;
struct iommu_sva *sva;
unsigned int pasid;
struct idxd_cdev *idxd_cdev;
wq = inode_wq(inode);
idxd = wq->idxd;
@ -97,6 +248,7 @@ static int idxd_cdev_open(struct inode *inode, struct file *filp)
ctx->wq = wq;
filp->private_data = ctx;
ctx->pid = current->pid;
if (device_user_pasid_enabled(idxd)) {
sva = iommu_sva_bind_device(dev, current->mm);
@ -108,65 +260,118 @@ static int idxd_cdev_open(struct inode *inode, struct file *filp)
pasid = iommu_sva_get_pasid(sva);
if (pasid == IOMMU_PASID_INVALID) {
iommu_sva_unbind_device(sva);
rc = -EINVAL;
goto failed;
goto failed_get_pasid;
}
ctx->sva = sva;
ctx->pasid = pasid;
ctx->mm = current->mm;
mutex_lock(&wq->uc_lock);
rc = xa_insert(&wq->upasid_xa, pasid, ctx, GFP_KERNEL);
mutex_unlock(&wq->uc_lock);
if (rc < 0)
dev_warn(dev, "PASID entry already exist in xarray.\n");
if (wq_dedicated(wq)) {
rc = idxd_wq_set_pasid(wq, pasid);
if (rc < 0) {
iommu_sva_unbind_device(sva);
dev_err(dev, "wq set pasid failed: %d\n", rc);
goto failed;
goto failed_set_pasid;
}
}
}
idxd_cdev = wq->idxd_cdev;
mutex_lock(&ida_lock);
ctx->id = ida_alloc(&file_ida, GFP_KERNEL);
mutex_unlock(&ida_lock);
if (ctx->id < 0) {
dev_warn(dev, "ida alloc failure\n");
goto failed_ida;
}
ctx->idxd_dev.type = IDXD_DEV_CDEV_FILE;
fdev = user_ctx_dev(ctx);
device_initialize(fdev);
fdev->parent = cdev_dev(idxd_cdev);
fdev->bus = &dsa_bus_type;
fdev->type = &idxd_cdev_file_type;
rc = dev_set_name(fdev, "file%d", ctx->id);
if (rc < 0) {
dev_warn(dev, "set name failure\n");
goto failed_dev_name;
}
rc = device_add(fdev);
if (rc < 0) {
dev_warn(dev, "file device add failure\n");
goto failed_dev_add;
}
idxd_wq_get(wq);
mutex_unlock(&wq->wq_lock);
return 0;
failed:
failed_dev_add:
failed_dev_name:
put_device(fdev);
failed_ida:
failed_set_pasid:
if (device_user_pasid_enabled(idxd))
idxd_xa_pasid_remove(ctx);
failed_get_pasid:
if (device_user_pasid_enabled(idxd))
iommu_sva_unbind_device(sva);
failed:
mutex_unlock(&wq->wq_lock);
kfree(ctx);
return rc;
}
static void idxd_cdev_evl_drain_pasid(struct idxd_wq *wq, u32 pasid)
{
struct idxd_device *idxd = wq->idxd;
struct idxd_evl *evl = idxd->evl;
union evl_status_reg status;
u16 h, t, size;
int ent_size = evl_ent_size(idxd);
struct __evl_entry *entry_head;
if (!evl)
return;
spin_lock(&evl->lock);
status.bits = ioread64(idxd->reg_base + IDXD_EVLSTATUS_OFFSET);
t = status.tail;
h = evl->head;
size = evl->size;
while (h != t) {
entry_head = (struct __evl_entry *)(evl->log + (h * ent_size));
if (entry_head->pasid == pasid && entry_head->wq_idx == wq->id)
set_bit(h, evl->bmap);
h = (h + 1) % size;
}
spin_unlock(&evl->lock);
drain_workqueue(wq->wq);
}
static int idxd_cdev_release(struct inode *node, struct file *filep)
{
struct idxd_user_context *ctx = filep->private_data;
struct idxd_wq *wq = ctx->wq;
struct idxd_device *idxd = wq->idxd;
struct device *dev = &idxd->pdev->dev;
int rc;
dev_dbg(dev, "%s called\n", __func__);
filep->private_data = NULL;
/* Wait for in-flight operations to complete. */
if (wq_shared(wq)) {
idxd_device_drain_pasid(idxd, ctx->pasid);
} else {
if (device_user_pasid_enabled(idxd)) {
/* The wq disable in the disable pasid function will drain the wq */
rc = idxd_wq_disable_pasid(wq);
if (rc < 0)
dev_err(dev, "wq disable pasid failed.\n");
} else {
idxd_wq_drain(wq);
}
}
device_unregister(user_ctx_dev(ctx));
if (ctx->sva)
iommu_sva_unbind_device(ctx->sva);
kfree(ctx);
mutex_lock(&wq->wq_lock);
idxd_wq_put(wq);
mutex_unlock(&wq->wq_lock);
return 0;
}
@ -297,6 +502,7 @@ void idxd_wq_del_cdev(struct idxd_wq *wq)
struct idxd_cdev *idxd_cdev;
idxd_cdev = wq->idxd_cdev;
ida_destroy(&file_ida);
wq->idxd_cdev = NULL;
cdev_device_del(&idxd_cdev->cdev, cdev_dev(idxd_cdev));
put_device(cdev_dev(idxd_cdev));
@ -330,6 +536,13 @@ static int idxd_user_drv_probe(struct idxd_dev *idxd_dev)
}
mutex_lock(&wq->wq_lock);
wq->wq = create_workqueue(dev_name(wq_confdev(wq)));
if (!wq->wq) {
rc = -ENOMEM;
goto wq_err;
}
wq->type = IDXD_WQT_USER;
rc = drv_enable_wq(wq);
if (rc < 0)
@ -348,7 +561,9 @@ static int idxd_user_drv_probe(struct idxd_dev *idxd_dev)
err_cdev:
drv_disable_wq(wq);
err:
destroy_workqueue(wq->wq);
wq->type = IDXD_WQT_NONE;
wq_err:
mutex_unlock(&wq->wq_lock);
return rc;
}
@ -361,6 +576,8 @@ static void idxd_user_drv_remove(struct idxd_dev *idxd_dev)
idxd_wq_del_cdev(wq);
drv_disable_wq(wq);
wq->type = IDXD_WQT_NONE;
destroy_workqueue(wq->wq);
wq->wq = NULL;
mutex_unlock(&wq->wq_lock);
}
@ -407,3 +624,70 @@ void idxd_cdev_remove(void)
ida_destroy(&ictx[i].minor_ida);
}
}
/**
* idxd_copy_cr - copy completion record to user address space found by wq and
* PASID
* @wq: work queue
* @pasid: PASID
* @addr: user fault address to write
* @cr: completion record
* @len: number of bytes to copy
*
* This is called by a work that handles completion record fault.
*
* Return: number of bytes copied.
*/
int idxd_copy_cr(struct idxd_wq *wq, ioasid_t pasid, unsigned long addr,
void *cr, int len)
{
struct device *dev = &wq->idxd->pdev->dev;
int left = len, status_size = 1;
struct idxd_user_context *ctx;
struct mm_struct *mm;
mutex_lock(&wq->uc_lock);
ctx = xa_load(&wq->upasid_xa, pasid);
if (!ctx) {
dev_warn(dev, "No user context\n");
goto out;
}
mm = ctx->mm;
/*
* The completion record fault handling work is running in kernel
* thread context. It temporarily switches to the mm to copy cr
* to addr in the mm.
*/
kthread_use_mm(mm);
left = copy_to_user((void __user *)addr + status_size, cr + status_size,
len - status_size);
/*
* Copy status only after the rest of completion record is copied
* successfully so that the user gets the complete completion record
* when a non-zero status is polled.
*/
if (!left) {
u8 status;
/*
* Ensure that the completion record's status field is written
* after the rest of the completion record has been written.
* This ensures that the user receives the correct completion
* record information once polling for a non-zero status.
*/
wmb();
status = *(u8 *)cr;
if (put_user(status, (u8 __user *)addr))
left += status_size;
} else {
left += status_size;
}
kthread_unuse_mm(mm);
out:
mutex_unlock(&wq->uc_lock);
return len - left;
}

138
drivers/dma/idxd/debugfs.c Normal file
View File

@ -0,0 +1,138 @@
// SPDX-License-Identifier: GPL-2.0
/* Copyright(c) 2021 Intel Corporation. All rights rsvd. */
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/pci.h>
#include <linux/debugfs.h>
#include <linux/io-64-nonatomic-lo-hi.h>
#include <uapi/linux/idxd.h>
#include "idxd.h"
#include "registers.h"
static struct dentry *idxd_debugfs_dir;
static void dump_event_entry(struct idxd_device *idxd, struct seq_file *s,
u16 index, int *count, bool processed)
{
struct idxd_evl *evl = idxd->evl;
struct dsa_evl_entry *entry;
struct dsa_completion_record *cr;
u64 *raw;
int i;
int evl_strides = evl_ent_size(idxd) / sizeof(u64);
entry = (struct dsa_evl_entry *)evl->log + index;
if (!entry->e.desc_valid)
return;
seq_printf(s, "Event Log entry %d (real index %u) processed: %u\n",
*count, index, processed);
seq_printf(s, "desc valid %u wq idx valid %u\n"
"batch %u fault rw %u priv %u error 0x%x\n"
"wq idx %u op %#x pasid %u batch idx %u\n"
"fault addr %#llx\n",
entry->e.desc_valid, entry->e.wq_idx_valid,
entry->e.batch, entry->e.fault_rw, entry->e.priv,
entry->e.error, entry->e.wq_idx, entry->e.operation,
entry->e.pasid, entry->e.batch_idx, entry->e.fault_addr);
cr = &entry->cr;
seq_printf(s, "status %#x result %#x fault_info %#x bytes_completed %u\n"
"fault addr %#llx inv flags %#x\n\n",
cr->status, cr->result, cr->fault_info, cr->bytes_completed,
cr->fault_addr, cr->invalid_flags);
raw = (u64 *)entry;
for (i = 0; i < evl_strides; i++)
seq_printf(s, "entry[%d] = %#llx\n", i, raw[i]);
seq_puts(s, "\n");
*count += 1;
}
static int debugfs_evl_show(struct seq_file *s, void *d)
{
struct idxd_device *idxd = s->private;
struct idxd_evl *evl = idxd->evl;
union evl_status_reg evl_status;
u16 h, t, evl_size, i;
int count = 0;
bool processed = true;
if (!evl || !evl->log)
return 0;
spin_lock(&evl->lock);
h = evl->head;
evl_status.bits = ioread64(idxd->reg_base + IDXD_EVLSTATUS_OFFSET);
t = evl_status.tail;
evl_size = evl->size;
seq_printf(s, "Event Log head %u tail %u interrupt pending %u\n\n",
evl_status.head, evl_status.tail, evl_status.int_pending);
i = t;
while (1) {
i = (i + 1) % evl_size;
if (i == t)
break;
if (processed && i == h)
processed = false;
dump_event_entry(idxd, s, i, &count, processed);
}
spin_unlock(&evl->lock);
return 0;
}
DEFINE_SHOW_ATTRIBUTE(debugfs_evl);
int idxd_device_init_debugfs(struct idxd_device *idxd)
{
if (IS_ERR_OR_NULL(idxd_debugfs_dir))
return 0;
idxd->dbgfs_dir = debugfs_create_dir(dev_name(idxd_confdev(idxd)), idxd_debugfs_dir);
if (IS_ERR(idxd->dbgfs_dir))
return PTR_ERR(idxd->dbgfs_dir);
if (idxd->evl) {
idxd->dbgfs_evl_file = debugfs_create_file("event_log", 0400,
idxd->dbgfs_dir, idxd,
&debugfs_evl_fops);
if (IS_ERR(idxd->dbgfs_evl_file)) {
debugfs_remove_recursive(idxd->dbgfs_dir);
idxd->dbgfs_dir = NULL;
return PTR_ERR(idxd->dbgfs_evl_file);
}
}
return 0;
}
void idxd_device_remove_debugfs(struct idxd_device *idxd)
{
debugfs_remove_recursive(idxd->dbgfs_dir);
}
int idxd_init_debugfs(void)
{
if (!debugfs_initialized())
return 0;
idxd_debugfs_dir = debugfs_create_dir(KBUILD_MODNAME, NULL);
if (IS_ERR(idxd_debugfs_dir))
return PTR_ERR(idxd_debugfs_dir);
return 0;
}
void idxd_remove_debugfs(void)
{
debugfs_remove_recursive(idxd_debugfs_dir);
}

113
drivers/dma/idxd/device.c
View File

@ -752,6 +752,101 @@ void idxd_device_clear_state(struct idxd_device *idxd)
spin_unlock(&idxd->dev_lock);
}
static int idxd_device_evl_setup(struct idxd_device *idxd)
{
union gencfg_reg gencfg;
union evlcfg_reg evlcfg;
union genctrl_reg genctrl;
struct device *dev = &idxd->pdev->dev;
void *addr;
dma_addr_t dma_addr;
int size;
struct idxd_evl *evl = idxd->evl;
unsigned long *bmap;
int rc;
if (!evl)
return 0;
size = evl_size(idxd);
bmap = bitmap_zalloc(size, GFP_KERNEL);
if (!bmap) {
rc = -ENOMEM;
goto err_bmap;
}
/*
* Address needs to be page aligned. However, dma_alloc_coherent() provides
* at minimal page size aligned address. No manual alignment required.
*/
addr = dma_alloc_coherent(dev, size, &dma_addr, GFP_KERNEL);
if (!addr) {
rc = -ENOMEM;
goto err_alloc;
}
memset(addr, 0, size);
spin_lock(&evl->lock);
evl->log = addr;
evl->dma = dma_addr;
evl->log_size = size;
evl->bmap = bmap;
memset(&evlcfg, 0, sizeof(evlcfg));
evlcfg.bits[0] = dma_addr & GENMASK(63, 12);
evlcfg.size = evl->size;
iowrite64(evlcfg.bits[0], idxd->reg_base + IDXD_EVLCFG_OFFSET);
iowrite64(evlcfg.bits[1], idxd->reg_base + IDXD_EVLCFG_OFFSET + 8);
genctrl.bits = ioread32(idxd->reg_base + IDXD_GENCTRL_OFFSET);
genctrl.evl_int_en = 1;
iowrite32(genctrl.bits, idxd->reg_base + IDXD_GENCTRL_OFFSET);
gencfg.bits = ioread32(idxd->reg_base + IDXD_GENCFG_OFFSET);
gencfg.evl_en = 1;
iowrite32(gencfg.bits, idxd->reg_base + IDXD_GENCFG_OFFSET);
spin_unlock(&evl->lock);
return 0;
err_alloc:
bitmap_free(bmap);
err_bmap:
return rc;
}
static void idxd_device_evl_free(struct idxd_device *idxd)
{
union gencfg_reg gencfg;
union genctrl_reg genctrl;
struct device *dev = &idxd->pdev->dev;
struct idxd_evl *evl = idxd->evl;
gencfg.bits = ioread32(idxd->reg_base + IDXD_GENCFG_OFFSET);
if (!gencfg.evl_en)
return;
spin_lock(&evl->lock);
gencfg.evl_en = 0;
iowrite32(gencfg.bits, idxd->reg_base + IDXD_GENCFG_OFFSET);
genctrl.bits = ioread32(idxd->reg_base + IDXD_GENCTRL_OFFSET);
genctrl.evl_int_en = 0;
iowrite32(genctrl.bits, idxd->reg_base + IDXD_GENCTRL_OFFSET);
iowrite64(0, idxd->reg_base + IDXD_EVLCFG_OFFSET);
iowrite64(0, idxd->reg_base + IDXD_EVLCFG_OFFSET + 8);
dma_free_coherent(dev, evl->log_size, evl->log, evl->dma);
bitmap_free(evl->bmap);
evl->log = NULL;
evl->size = IDXD_EVL_SIZE_MIN;
spin_unlock(&evl->lock);
}
static void idxd_group_config_write(struct idxd_group *group)
{
struct idxd_device *idxd = group->idxd;
@ -872,12 +967,16 @@ static int idxd_wq_config_write(struct idxd_wq *wq)
wq->wqcfg->priority = wq->priority;
if (idxd->hw.gen_cap.block_on_fault &&
test_bit(WQ_FLAG_BLOCK_ON_FAULT, &wq->flags))
test_bit(WQ_FLAG_BLOCK_ON_FAULT, &wq->flags) &&
!test_bit(WQ_FLAG_PRS_DISABLE, &wq->flags))
wq->wqcfg->bof = 1;
if (idxd->hw.wq_cap.wq_ats_support)
wq->wqcfg->wq_ats_disable = test_bit(WQ_FLAG_ATS_DISABLE, &wq->flags);
if (idxd->hw.wq_cap.wq_prs_support)
wq->wqcfg->wq_prs_disable = test_bit(WQ_FLAG_PRS_DISABLE, &wq->flags);
/* bytes 12-15 */
wq->wqcfg->max_xfer_shift = ilog2(wq->max_xfer_bytes);
idxd_wqcfg_set_max_batch_shift(idxd->data->type, wq->wqcfg, ilog2(wq->max_batch_size));
@ -1451,15 +1550,24 @@ int idxd_device_drv_probe(struct idxd_dev *idxd_dev)
if (rc < 0)
return -ENXIO;
rc = idxd_device_evl_setup(idxd);
if (rc < 0) {
idxd->cmd_status = IDXD_SCMD_DEV_EVL_ERR;
return rc;
}
/* Start device */
rc = idxd_device_enable(idxd);
if (rc < 0)
if (rc < 0) {
idxd_device_evl_free(idxd);
return rc;
}
/* Setup DMA device without channels */
rc = idxd_register_dma_device(idxd);
if (rc < 0) {
idxd_device_disable(idxd);
idxd_device_evl_free(idxd);
idxd->cmd_status = IDXD_SCMD_DEV_DMA_ERR;
return rc;
}
@ -1488,6 +1596,7 @@ void idxd_device_drv_remove(struct idxd_dev *idxd_dev)
idxd_device_disable(idxd);
if (test_bit(IDXD_FLAG_CONFIGURABLE, &idxd->flags))
idxd_device_reset(idxd);
idxd_device_evl_free(idxd);
}
static enum idxd_dev_type dev_types[] = {

67
drivers/dma/idxd/idxd.h
View File

@ -32,6 +32,7 @@ enum idxd_dev_type {
IDXD_DEV_GROUP,
IDXD_DEV_ENGINE,
IDXD_DEV_CDEV,
IDXD_DEV_CDEV_FILE,
IDXD_DEV_MAX_TYPE,
};
@ -127,6 +128,12 @@ struct idxd_pmu {
#define IDXD_MAX_PRIORITY 0xf
enum {
COUNTER_FAULTS = 0,
COUNTER_FAULT_FAILS,
COUNTER_MAX
};
enum idxd_wq_state {
IDXD_WQ_DISABLED = 0,
IDXD_WQ_ENABLED,
@ -136,6 +143,7 @@ enum idxd_wq_flag {
WQ_FLAG_DEDICATED = 0,
WQ_FLAG_BLOCK_ON_FAULT,
WQ_FLAG_ATS_DISABLE,
WQ_FLAG_PRS_DISABLE,
};
enum idxd_wq_type {
@ -185,6 +193,7 @@ struct idxd_wq {
struct idxd_dev idxd_dev;
struct idxd_cdev *idxd_cdev;
struct wait_queue_head err_queue;
struct workqueue_struct *wq;
struct idxd_device *idxd;
int id;
struct idxd_irq_entry ie;
@ -214,6 +223,10 @@ struct idxd_wq {
char name[WQ_NAME_SIZE + 1];
u64 max_xfer_bytes;
u32 max_batch_size;
/* Lock to protect upasid_xa access. */
struct mutex uc_lock;
struct xarray upasid_xa;
};
struct idxd_engine {
@ -232,6 +245,7 @@ struct idxd_hw {
union engine_cap_reg engine_cap;
struct opcap opcap;
u32 cmd_cap;
union iaa_cap_reg iaa_cap;
};
enum idxd_device_state {
@ -258,6 +272,32 @@ struct idxd_driver_data {
struct device_type *dev_type;
int compl_size;
int align;
int evl_cr_off;
int cr_status_off;
int cr_result_off;
};
struct idxd_evl {
/* Lock to protect event log access. */
spinlock_t lock;
void *log;
dma_addr_t dma;
/* Total size of event log = number of entries * entry size. */
unsigned int log_size;
/* The number of entries in the event log. */
u16 size;
u16 head;
unsigned long *bmap;
bool batch_fail[IDXD_MAX_BATCH_IDENT];
};
struct idxd_evl_fault {
struct work_struct work;
struct idxd_wq *wq;
u8 status;
/* make this last member always */
struct __evl_entry entry[];
};
struct idxd_device {
@ -316,8 +356,24 @@ struct idxd_device {
struct idxd_pmu *idxd_pmu;
unsigned long *opcap_bmap;
struct idxd_evl *evl;
struct kmem_cache *evl_cache;
struct dentry *dbgfs_dir;
struct dentry *dbgfs_evl_file;
};
static inline unsigned int evl_ent_size(struct idxd_device *idxd)
{
return idxd->hw.gen_cap.evl_support ?
(32 * (1 << idxd->hw.gen_cap.evl_support)) : 0;
}
static inline unsigned int evl_size(struct idxd_device *idxd)
{
return idxd->evl->size * evl_ent_size(idxd);
}
/* IDXD software descriptor */
struct idxd_desc {
union {
@ -351,6 +407,7 @@ enum idxd_completion_status {
#define engine_confdev(engine) &engine->idxd_dev.conf_dev
#define group_confdev(group) &group->idxd_dev.conf_dev
#define cdev_dev(cdev) &cdev->idxd_dev.conf_dev
#define user_ctx_dev(ctx) (&(ctx)->idxd_dev.conf_dev)
#define confdev_to_idxd_dev(dev) container_of(dev, struct idxd_dev, conf_dev)
#define idxd_dev_to_idxd(idxd_dev) container_of(idxd_dev, struct idxd_device, idxd_dev)
@ -598,6 +655,7 @@ int idxd_register_driver(void);
void idxd_unregister_driver(void);
void idxd_wqs_quiesce(struct idxd_device *idxd);
bool idxd_queue_int_handle_resubmit(struct idxd_desc *desc);
void multi_u64_to_bmap(unsigned long *bmap, u64 *val, int count);
/* device interrupt control */
irqreturn_t idxd_misc_thread(int vec, void *data);
@ -662,6 +720,9 @@ void idxd_cdev_remove(void);
int idxd_cdev_get_major(struct idxd_device *idxd);
int idxd_wq_add_cdev(struct idxd_wq *wq);
void idxd_wq_del_cdev(struct idxd_wq *wq);
int idxd_copy_cr(struct idxd_wq *wq, ioasid_t pasid, unsigned long addr,
void *buf, int len);
void idxd_user_counter_increment(struct idxd_wq *wq, u32 pasid, int index);
/* perfmon */
#if IS_ENABLED(CONFIG_INTEL_IDXD_PERFMON)
@ -678,4 +739,10 @@ static inline void perfmon_init(void) {}
static inline void perfmon_exit(void) {}
#endif
/* debugfs */
int idxd_device_init_debugfs(struct idxd_device *idxd);
void idxd_device_remove_debugfs(struct idxd_device *idxd);
int idxd_init_debugfs(void);
void idxd_remove_debugfs(void);
#endif

60
drivers/dma/idxd/init.c
View File

@ -9,7 +9,6 @@
#include <linux/delay.h>
#include <linux/dma-mapping.h>
#include <linux/workqueue.h>
#include <linux/aer.h>
#include <linux/fs.h>
#include <linux/io-64-nonatomic-lo-hi.h>
#include <linux/device.h>
@ -47,6 +46,9 @@ static struct idxd_driver_data idxd_driver_data[] = {
.compl_size = sizeof(struct dsa_completion_record),
.align = 32,
.dev_type = &dsa_device_type,
.evl_cr_off = offsetof(struct dsa_evl_entry, cr),
.cr_status_off = offsetof(struct dsa_completion_record, status),
.cr_result_off = offsetof(struct dsa_completion_record, result),
},
[IDXD_TYPE_IAX] = {
.name_prefix = "iax",
@ -54,6 +56,9 @@ static struct idxd_driver_data idxd_driver_data[] = {
.compl_size = sizeof(struct iax_completion_record),
.align = 64,
.dev_type = &iax_device_type,
.evl_cr_off = offsetof(struct iax_evl_entry, cr),
.cr_status_off = offsetof(struct iax_completion_record, status),
.cr_result_off = offsetof(struct iax_completion_record, error_code),
},
};
@ -200,6 +205,8 @@ static int idxd_setup_wqs(struct idxd_device *idxd)
}
bitmap_copy(wq->opcap_bmap, idxd->opcap_bmap, IDXD_MAX_OPCAP_BITS);
}
mutex_init(&wq->uc_lock);
xa_init(&wq->upasid_xa);
idxd->wqs[i] = wq;
}
@ -332,6 +339,33 @@ static void idxd_cleanup_internals(struct idxd_device *idxd)
destroy_workqueue(idxd->wq);
}
static int idxd_init_evl(struct idxd_device *idxd)
{
struct device *dev = &idxd->pdev->dev;
struct idxd_evl *evl;
if (idxd->hw.gen_cap.evl_support == 0)
return 0;
evl = kzalloc_node(sizeof(*evl), GFP_KERNEL, dev_to_node(dev));
if (!evl)
return -ENOMEM;
spin_lock_init(&evl->lock);
evl->size = IDXD_EVL_SIZE_MIN;
idxd->evl_cache = kmem_cache_create(dev_name(idxd_confdev(idxd)),
sizeof(struct idxd_evl_fault) + evl_ent_size(idxd),
0, 0, NULL);
if (!idxd->evl_cache) {
kfree(evl);
return -ENOMEM;
}
idxd->evl = evl;
return 0;
}
static int idxd_setup_internals(struct idxd_device *idxd)
{
struct device *dev = &idxd->pdev->dev;
@ -357,8 +391,14 @@ static int idxd_setup_internals(struct idxd_device *idxd)
goto err_wkq_create;
}
rc = idxd_init_evl(idxd);
if (rc < 0)
goto err_evl;
return 0;
err_evl:
destroy_workqueue(idxd->wq);
err_wkq_create:
for (i = 0; i < idxd->max_groups; i++)
put_device(group_confdev(idxd->groups[i]));
@ -389,7 +429,7 @@ static void idxd_read_table_offsets(struct idxd_device *idxd)
dev_dbg(dev, "IDXD Perfmon Offset: %#x\n", idxd->perfmon_offset);
}
static void multi_u64_to_bmap(unsigned long *bmap, u64 *val, int count)
void multi_u64_to_bmap(unsigned long *bmap, u64 *val, int count)
{
int i, j, nr;
@ -461,6 +501,10 @@ static void idxd_read_caps(struct idxd_device *idxd)
dev_dbg(dev, "opcap[%d]: %#llx\n", i, idxd->hw.opcap.bits[i]);
}
multi_u64_to_bmap(idxd->opcap_bmap, &idxd->hw.opcap.bits[0], 4);
/* read iaa cap */
if (idxd->data->type == IDXD_TYPE_IAX && idxd->hw.version >= DEVICE_VERSION_2)
idxd->hw.iaa_cap.bits = ioread64(idxd->reg_base + IDXD_IAACAP_OFFSET);
}
static struct idxd_device *idxd_alloc(struct pci_dev *pdev, struct idxd_driver_data *data)
@ -661,6 +705,10 @@ static int idxd_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
goto err_dev_register;
}
rc = idxd_device_init_debugfs(idxd);
if (rc)
dev_warn(dev, "IDXD debugfs failed to setup\n");
dev_info(&pdev->dev, "Intel(R) Accelerator Device (v%x)\n",
idxd->hw.version);
@ -723,6 +771,7 @@ static void idxd_remove(struct pci_dev *pdev)
idxd_shutdown(pdev);
if (device_pasid_enabled(idxd))
idxd_disable_system_pasid(idxd);
idxd_device_remove_debugfs(idxd);
irq_entry = idxd_get_ie(idxd, 0);
free_irq(irq_entry->vector, irq_entry);
@ -780,6 +829,10 @@ static int __init idxd_init_module(void)
if (err)
goto err_cdev_register;
err = idxd_init_debugfs();
if (err)
goto err_debugfs;
err = pci_register_driver(&idxd_pci_driver);
if (err)
goto err_pci_register;
@ -787,6 +840,8 @@ static int __init idxd_init_module(void)
return 0;
err_pci_register:
idxd_remove_debugfs();
err_debugfs:
idxd_cdev_remove();
err_cdev_register:
idxd_driver_unregister(&idxd_user_drv);
@ -807,5 +862,6 @@ static void __exit idxd_exit_module(void)
pci_unregister_driver(&idxd_pci_driver);
idxd_cdev_remove();
perfmon_exit();
idxd_remove_debugfs();
}
module_exit(idxd_exit_module);

210
drivers/dma/idxd/irq.c
View File

@ -7,6 +7,8 @@
#include <linux/io-64-nonatomic-lo-hi.h>
#include <linux/dmaengine.h>
#include <linux/delay.h>
#include <linux/iommu.h>
#include <linux/sched/mm.h>
#include <uapi/linux/idxd.h>
#include "../dmaengine.h"
#include "idxd.h"
@ -217,13 +219,187 @@ static void idxd_int_handle_revoke(struct work_struct *work)
kfree(revoke);
}
static int process_misc_interrupts(struct idxd_device *idxd, u32 cause)
static void idxd_evl_fault_work(struct work_struct *work)
{
struct idxd_evl_fault *fault = container_of(work, struct idxd_evl_fault, work);
struct idxd_wq *wq = fault->wq;
struct idxd_device *idxd = wq->idxd;
struct device *dev = &idxd->pdev->dev;
struct idxd_evl *evl = idxd->evl;
struct __evl_entry *entry_head = fault->entry;
void *cr = (void *)entry_head + idxd->data->evl_cr_off;
int cr_size = idxd->data->compl_size;
u8 *status = (u8 *)cr + idxd->data->cr_status_off;
u8 *result = (u8 *)cr + idxd->data->cr_result_off;
int copied, copy_size;
bool *bf;
switch (fault->status) {
case DSA_COMP_CRA_XLAT:
if (entry_head->batch && entry_head->first_err_in_batch)
evl->batch_fail[entry_head->batch_id] = false;
copy_size = cr_size;
idxd_user_counter_increment(wq, entry_head->pasid, COUNTER_FAULTS);
break;
case DSA_COMP_BATCH_EVL_ERR:
bf = &evl->batch_fail[entry_head->batch_id];
copy_size = entry_head->rcr || *bf ? cr_size : 0;
if (*bf) {
if (*status == DSA_COMP_SUCCESS)
*status = DSA_COMP_BATCH_FAIL;
*result = 1;
*bf = false;
}
idxd_user_counter_increment(wq, entry_head->pasid, COUNTER_FAULTS);
break;
case DSA_COMP_DRAIN_EVL:
copy_size = cr_size;
break;
default:
copy_size = 0;
dev_dbg_ratelimited(dev, "Unrecognized error code: %#x\n", fault->status);
break;
}
if (copy_size == 0)
return;
/*
* Copy completion record to fault_addr in user address space
* that is found by wq and PASID.
*/
copied = idxd_copy_cr(wq, entry_head->pasid, entry_head->fault_addr,
cr, copy_size);
/*
* The task that triggered the page fault is unknown currently
* because multiple threads may share the user address
* space or the task exits already before this fault.
* So if the copy fails, SIGSEGV can not be sent to the task.
* Just print an error for the failure. The user application
* waiting for the completion record will time out on this
* failure.
*/
switch (fault->status) {
case DSA_COMP_CRA_XLAT:
if (copied != copy_size) {
idxd_user_counter_increment(wq, entry_head->pasid, COUNTER_FAULT_FAILS);
dev_dbg_ratelimited(dev, "Failed to write to completion record: (%d:%d)\n",
copy_size, copied);
if (entry_head->batch)
evl->batch_fail[entry_head->batch_id] = true;
}
break;
case DSA_COMP_BATCH_EVL_ERR:
if (copied != copy_size) {
idxd_user_counter_increment(wq, entry_head->pasid, COUNTER_FAULT_FAILS);
dev_dbg_ratelimited(dev, "Failed to write to batch completion record: (%d:%d)\n",
copy_size, copied);
}
break;
case DSA_COMP_DRAIN_EVL:
if (copied != copy_size)
dev_dbg_ratelimited(dev, "Failed to write to drain completion record: (%d:%d)\n",
copy_size, copied);
break;
}
kmem_cache_free(idxd->evl_cache, fault);
}
static void process_evl_entry(struct idxd_device *idxd,
struct __evl_entry *entry_head, unsigned int index)
{
struct device *dev = &idxd->pdev->dev;
struct idxd_evl *evl = idxd->evl;
u8 status;
if (test_bit(index, evl->bmap)) {
clear_bit(index, evl->bmap);
} else {
status = DSA_COMP_STATUS(entry_head->error);
if (status == DSA_COMP_CRA_XLAT || status == DSA_COMP_DRAIN_EVL ||
status == DSA_COMP_BATCH_EVL_ERR) {
struct idxd_evl_fault *fault;
int ent_size = evl_ent_size(idxd);
if (entry_head->rci)
dev_dbg(dev, "Completion Int Req set, ignoring!\n");
if (!entry_head->rcr && status == DSA_COMP_DRAIN_EVL)
return;
fault = kmem_cache_alloc(idxd->evl_cache, GFP_ATOMIC);
if (fault) {
struct idxd_wq *wq = idxd->wqs[entry_head->wq_idx];
fault->wq = wq;
fault->status = status;
memcpy(&fault->entry, entry_head, ent_size);
INIT_WORK(&fault->work, idxd_evl_fault_work);
queue_work(wq->wq, &fault->work);
} else {
dev_warn(dev, "Failed to service fault work.\n");
}
} else {
dev_warn_ratelimited(dev, "Device error %#x operation: %#x fault addr: %#llx\n",
status, entry_head->operation,
entry_head->fault_addr);
}
}
}
static void process_evl_entries(struct idxd_device *idxd)
{
union evl_status_reg evl_status;
unsigned int h, t;
struct idxd_evl *evl = idxd->evl;
struct __evl_entry *entry_head;
unsigned int ent_size = evl_ent_size(idxd);
u32 size;
evl_status.bits = 0;
evl_status.int_pending = 1;
spin_lock(&evl->lock);
/* Clear interrupt pending bit */
iowrite32(evl_status.bits_upper32,
idxd->reg_base + IDXD_EVLSTATUS_OFFSET + sizeof(u32));
h = evl->head;
evl_status.bits = ioread64(idxd->reg_base + IDXD_EVLSTATUS_OFFSET);
t = evl_status.tail;
size = idxd->evl->size;
while (h != t) {
entry_head = (struct __evl_entry *)(evl->log + (h * ent_size));
process_evl_entry(idxd, entry_head, h);
h = (h + 1) % size;
}
evl->head = h;
evl_status.head = h;
iowrite32(evl_status.bits_lower32, idxd->reg_base + IDXD_EVLSTATUS_OFFSET);
spin_unlock(&evl->lock);
}
irqreturn_t idxd_misc_thread(int vec, void *data)
{
struct idxd_irq_entry *irq_entry = data;
struct idxd_device *idxd = ie_to_idxd(irq_entry);
struct device *dev = &idxd->pdev->dev;
union gensts_reg gensts;
u32 val = 0;
int i;
bool err = false;
u32 cause;
cause = ioread32(idxd->reg_base + IDXD_INTCAUSE_OFFSET);
if (!cause)
return IRQ_NONE;
iowrite32(cause, idxd->reg_base + IDXD_INTCAUSE_OFFSET);
if (cause & IDXD_INTC_HALT_STATE)
goto halt;
@ -295,13 +471,18 @@ static int process_misc_interrupts(struct idxd_device *idxd, u32 cause)
perfmon_counter_overflow(idxd);
}
if (cause & IDXD_INTC_EVL) {
val |= IDXD_INTC_EVL;
process_evl_entries(idxd);
}
val ^= cause;
if (val)
dev_warn_once(dev, "Unexpected interrupt cause bits set: %#x\n",
val);
if (!err)
return 0;
goto out;
halt:
gensts.bits = ioread32(idxd->reg_base + IDXD_GENSTATS_OFFSET);
@ -324,33 +505,10 @@ halt:
"idxd halted, need %s.\n",
gensts.reset_type == IDXD_DEVICE_RESET_FLR ?
"FLR" : "system reset");
return -ENXIO;
}
}
return 0;
}
irqreturn_t idxd_misc_thread(int vec, void *data)
{
struct idxd_irq_entry *irq_entry = data;
struct idxd_device *idxd = ie_to_idxd(irq_entry);
int rc;
u32 cause;
cause = ioread32(idxd->reg_base + IDXD_INTCAUSE_OFFSET);
if (cause)
iowrite32(cause, idxd->reg_base + IDXD_INTCAUSE_OFFSET);
while (cause) {
rc = process_misc_interrupts(idxd, cause);
if (rc < 0)
break;
cause = ioread32(idxd->reg_base + IDXD_INTCAUSE_OFFSET);
if (cause)
iowrite32(cause, idxd->reg_base + IDXD_INTCAUSE_OFFSET);
}
out:
return IRQ_HANDLED;
}

126
drivers/dma/idxd/registers.h
View File

@ -3,6 +3,8 @@
#ifndef _IDXD_REGISTERS_H_
#define _IDXD_REGISTERS_H_
#include <uapi/linux/idxd.h>
/* PCI Config */
#define PCI_DEVICE_ID_INTEL_DSA_SPR0 0x0b25
#define PCI_DEVICE_ID_INTEL_IAX_SPR0 0x0cfe
@ -31,7 +33,9 @@ union gen_cap_reg {
u64 rsvd:3;
u64 dest_readback:1;
u64 drain_readback:1;
u64 rsvd2:6;
u64 rsvd2:3;
u64 evl_support:2;
u64 batch_continuation:1;
u64 max_xfer_shift:5;
u64 max_batch_shift:4;
u64 max_ims_mult:6;
@ -55,7 +59,8 @@ union wq_cap_reg {
u64 occupancy:1;
u64 occupancy_int:1;
u64 op_config:1;
u64 rsvd3:9;
u64 wq_prs_support:1;
u64 rsvd4:8;
};
u64 bits;
} __packed;
@ -117,7 +122,8 @@ union gencfg_reg {
u32 rdbuf_limit:8;
u32 rsvd:4;
u32 user_int_en:1;
u32 rsvd2:19;
u32 evl_en:1;
u32 rsvd2:18;
};
u32 bits;
} __packed;
@ -127,7 +133,8 @@ union genctrl_reg {
struct {
u32 softerr_int_en:1;
u32 halt_int_en:1;
u32 rsvd:30;
u32 evl_int_en:1;
u32 rsvd:29;
};
u32 bits;
} __packed;
@ -162,6 +169,7 @@ enum idxd_device_reset_type {
#define IDXD_INTC_OCCUPY 0x04
#define IDXD_INTC_PERFMON_OVFL 0x08
#define IDXD_INTC_HALT_STATE 0x10
#define IDXD_INTC_EVL 0x20
#define IDXD_INTC_INT_HANDLE_REVOKED 0x80000000
#define IDXD_CMD_OFFSET 0xa0
@ -276,6 +284,45 @@ union sw_err_reg {
u64 bits[4];
} __packed;
union iaa_cap_reg {
struct {
u64 dec_aecs_format_ver:1;
u64 drop_init_bits:1;
u64 chaining:1;
u64 force_array_output_mod:1;
u64 load_part_aecs:1;
u64 comp_early_abort:1;
u64 nested_comp:1;
u64 diction_comp:1;
u64 header_gen:1;
u64 crypto_gcm:1;
u64 crypto_cfb:1;
u64 crypto_xts:1;
u64 rsvd:52;
};
u64 bits;
} __packed;
#define IDXD_IAACAP_OFFSET 0x180
#define IDXD_EVLCFG_OFFSET 0xe0
union evlcfg_reg {
struct {
u64 pasid_en:1;
u64 priv:1;
u64 rsvd:10;
u64 base_addr:52;
u64 size:16;
u64 pasid:20;
u64 rsvd2:28;
};
u64 bits[2];
} __packed;
#define IDXD_EVL_SIZE_MIN 0x0040
#define IDXD_EVL_SIZE_MAX 0xffff
union msix_perm {
struct {
u32 rsvd:2;
@ -325,7 +372,7 @@ union wqcfg {
u32 mode:1; /* shared or dedicated */
u32 bof:1; /* block on fault */
u32 wq_ats_disable:1;
u32 rsvd2:1;
u32 wq_prs_disable:1;
u32 priority:4;
u32 pasid:20;
u32 pasid_en:1;
@ -513,4 +560,73 @@ union filter_cfg {
u64 val;
} __packed;
#define IDXD_EVLSTATUS_OFFSET 0xf0
union evl_status_reg {
struct {
u32 head:16;
u32 rsvd:16;
u32 tail:16;
u32 rsvd2:14;
u32 int_pending:1;
u32 rsvd3:1;
};
struct {
u32 bits_lower32;
u32 bits_upper32;
};
u64 bits;
} __packed;
#define IDXD_MAX_BATCH_IDENT 256
struct __evl_entry {
u64 rsvd:2;
u64 desc_valid:1;
u64 wq_idx_valid:1;
u64 batch:1;
u64 fault_rw:1;
u64 priv:1;
u64 err_info_valid:1;
u64 error:8;
u64 wq_idx:8;
u64 batch_id:8;
u64 operation:8;
u64 pasid:20;
u64 rsvd2:4;
u16 batch_idx;
u16 rsvd3;
union {
/* Invalid Flags 0x11 */
u32 invalid_flags;
/* Invalid Int Handle 0x19 */
/* Page fault 0x1a */
/* Page fault 0x06, 0x1f, only operand_id */
/* Page fault before drain or in batch, 0x26, 0x27 */
struct {
u16 int_handle;
u16 rci:1;
u16 ims:1;
u16 rcr:1;
u16 first_err_in_batch:1;
u16 rsvd4_2:9;
u16 operand_id:3;
};
};
u64 fault_addr;
u64 rsvd5;
} __packed;
struct dsa_evl_entry {
struct __evl_entry e;
struct dsa_completion_record cr;
} __packed;
struct iax_evl_entry {
struct __evl_entry e;
u64 rsvd[4];
struct iax_completion_record cr;
} __packed;
#endif

146
drivers/dma/idxd/sysfs.c
View File

@ -822,10 +822,14 @@ static ssize_t wq_block_on_fault_store(struct device *dev,
if (rc < 0)
return rc;
if (bof)
if (bof) {
if (test_bit(WQ_FLAG_PRS_DISABLE, &wq->flags))
return -EOPNOTSUPP;
set_bit(WQ_FLAG_BLOCK_ON_FAULT, &wq->flags);
else
} else {
clear_bit(WQ_FLAG_BLOCK_ON_FAULT, &wq->flags);
}
return count;
}
@ -1109,6 +1113,44 @@ static ssize_t wq_ats_disable_store(struct device *dev, struct device_attribute
static struct device_attribute dev_attr_wq_ats_disable =
__ATTR(ats_disable, 0644, wq_ats_disable_show, wq_ats_disable_store);
static ssize_t wq_prs_disable_show(struct device *dev, struct device_attribute *attr, char *buf)
{
struct idxd_wq *wq = confdev_to_wq(dev);
return sysfs_emit(buf, "%u\n", test_bit(WQ_FLAG_PRS_DISABLE, &wq->flags));
}
static ssize_t wq_prs_disable_store(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
struct idxd_wq *wq = confdev_to_wq(dev);
struct idxd_device *idxd = wq->idxd;
bool prs_dis;
int rc;
if (wq->state != IDXD_WQ_DISABLED)
return -EPERM;
if (!idxd->hw.wq_cap.wq_prs_support)
return -EOPNOTSUPP;
rc = kstrtobool(buf, &prs_dis);
if (rc < 0)
return rc;
if (prs_dis) {
set_bit(WQ_FLAG_PRS_DISABLE, &wq->flags);
/* when PRS is disabled, BOF needs to be off as well */
clear_bit(WQ_FLAG_BLOCK_ON_FAULT, &wq->flags);
} else {
clear_bit(WQ_FLAG_PRS_DISABLE, &wq->flags);
}
return count;
}
static struct device_attribute dev_attr_wq_prs_disable =
__ATTR(prs_disable, 0644, wq_prs_disable_show, wq_prs_disable_store);
static ssize_t wq_occupancy_show(struct device *dev, struct device_attribute *attr, char *buf)
{
struct idxd_wq *wq = confdev_to_wq(dev);
@ -1239,6 +1281,7 @@ static struct attribute *idxd_wq_attributes[] = {
&dev_attr_wq_max_transfer_size.attr,
&dev_attr_wq_max_batch_size.attr,
&dev_attr_wq_ats_disable.attr,
&dev_attr_wq_prs_disable.attr,
&dev_attr_wq_occupancy.attr,
&dev_attr_wq_enqcmds_retries.attr,
&dev_attr_wq_op_config.attr,
@ -1260,6 +1303,13 @@ static bool idxd_wq_attr_max_batch_size_invisible(struct attribute *attr,
idxd->data->type == IDXD_TYPE_IAX;
}
static bool idxd_wq_attr_wq_prs_disable_invisible(struct attribute *attr,
struct idxd_device *idxd)
{
return attr == &dev_attr_wq_prs_disable.attr &&
!idxd->hw.wq_cap.wq_prs_support;
}
static umode_t idxd_wq_attr_visible(struct kobject *kobj,
struct attribute *attr, int n)
{
@ -1273,6 +1323,9 @@ static umode_t idxd_wq_attr_visible(struct kobject *kobj,
if (idxd_wq_attr_max_batch_size_invisible(attr, idxd))
return 0;
if (idxd_wq_attr_wq_prs_disable_invisible(attr, idxd))
return 0;
return attr->mode;
}
@ -1292,6 +1345,7 @@ static void idxd_conf_wq_release(struct device *dev)
bitmap_free(wq->opcap_bmap);
kfree(wq->wqcfg);
xa_destroy(&wq->upasid_xa);
kfree(wq);
}
@ -1452,15 +1506,13 @@ static ssize_t errors_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct idxd_device *idxd = confdev_to_idxd(dev);
int i, out = 0;
DECLARE_BITMAP(swerr_bmap, 256);
bitmap_zero(swerr_bmap, 256);
spin_lock(&idxd->dev_lock);
for (i = 0; i < 4; i++)
out += sysfs_emit_at(buf, out, "%#018llx ", idxd->sw_err.bits[i]);
multi_u64_to_bmap(swerr_bmap, &idxd->sw_err.bits[0], 4);
spin_unlock(&idxd->dev_lock);
out--;
out += sysfs_emit_at(buf, out, "\n");
return out;
return sysfs_emit(buf, "%*pb\n", 256, swerr_bmap);
}
static DEVICE_ATTR_RO(errors);
@ -1563,6 +1615,59 @@ static ssize_t cmd_status_store(struct device *dev, struct device_attribute *att
}
static DEVICE_ATTR_RW(cmd_status);
static ssize_t iaa_cap_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct idxd_device *idxd = confdev_to_idxd(dev);
if (idxd->hw.version < DEVICE_VERSION_2)
return -EOPNOTSUPP;
return sysfs_emit(buf, "%#llx\n", idxd->hw.iaa_cap.bits);
}
static DEVICE_ATTR_RO(iaa_cap);
static ssize_t event_log_size_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct idxd_device *idxd = confdev_to_idxd(dev);
if (!idxd->evl)
return -EOPNOTSUPP;
return sysfs_emit(buf, "%u\n", idxd->evl->size);
}
static ssize_t event_log_size_store(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
struct idxd_device *idxd = confdev_to_idxd(dev);
unsigned long val;
int rc;
if (!idxd->evl)
return -EOPNOTSUPP;
rc = kstrtoul(buf, 10, &val);
if (rc < 0)
return -EINVAL;
if (idxd->state == IDXD_DEV_ENABLED)
return -EPERM;
if (!test_bit(IDXD_FLAG_CONFIGURABLE, &idxd->flags))
return -EPERM;
if (val < IDXD_EVL_SIZE_MIN || val > IDXD_EVL_SIZE_MAX ||
(val * evl_ent_size(idxd) > ULONG_MAX - idxd->evl->dma))
return -EINVAL;
idxd->evl->size = val;
return count;
}
static DEVICE_ATTR_RW(event_log_size);
static bool idxd_device_attr_max_batch_size_invisible(struct attribute *attr,
struct idxd_device *idxd)
{
@ -1585,6 +1690,21 @@ static bool idxd_device_attr_read_buffers_invisible(struct attribute *attr,
idxd->data->type == IDXD_TYPE_IAX;
}
static bool idxd_device_attr_iaa_cap_invisible(struct attribute *attr,
struct idxd_device *idxd)
{
return attr == &dev_attr_iaa_cap.attr &&
(idxd->data->type != IDXD_TYPE_IAX ||
idxd->hw.version < DEVICE_VERSION_2);
}
static bool idxd_device_attr_event_log_size_invisible(struct attribute *attr,
struct idxd_device *idxd)
{
return (attr == &dev_attr_event_log_size.attr &&
!idxd->hw.gen_cap.evl_support);
}
static umode_t idxd_device_attr_visible(struct kobject *kobj,
struct attribute *attr, int n)
{
@ -1597,6 +1717,12 @@ static umode_t idxd_device_attr_visible(struct kobject *kobj,
if (idxd_device_attr_read_buffers_invisible(attr, idxd))
return 0;
if (idxd_device_attr_iaa_cap_invisible(attr, idxd))
return 0;
if (idxd_device_attr_event_log_size_invisible(attr, idxd))
return 0;
return attr->mode;
}
@ -1622,6 +1748,8 @@ static struct attribute *idxd_device_attributes[] = {
&dev_attr_read_buffer_limit.attr,
&dev_attr_cdev_major.attr,
&dev_attr_cmd_status.attr,
&dev_attr_iaa_cap.attr,
&dev_attr_event_log_size.attr,
NULL,
};
@ -1643,6 +1771,8 @@ static void idxd_conf_device_release(struct device *dev)
bitmap_free(idxd->wq_enable_map);
kfree(idxd->wqs);
kfree(idxd->engines);
kfree(idxd->evl);
kmem_cache_destroy(idxd->evl_cache);
ida_free(&idxd_ida, idxd->id);
bitmap_free(idxd->opcap_bmap);
kfree(idxd);

1
drivers/dma/imx-dma.c
View File

@ -750,7 +750,6 @@ static int imxdma_alloc_chan_resources(struct dma_chan *chan)
desc = kzalloc(sizeof(*desc), GFP_KERNEL);
if (!desc)
break;
memset(&desc->desc, 0, sizeof(struct dma_async_tx_descriptor));
dma_async_tx_descriptor_init(&desc->desc, chan);
desc->desc.tx_submit = imxdma_tx_submit;
/* txd.flags will be overwritten in prep funcs */

12
drivers/dma/ioat/init.c
View File

@ -15,7 +15,6 @@
#include <linux/workqueue.h>
#include <linux/prefetch.h>
#include <linux/dca.h>
#include <linux/aer.h>
#include <linux/sizes.h>
#include "dma.h"
#include "registers.h"
@ -1191,13 +1190,13 @@ static int ioat3_dma_probe(struct ioatdma_device *ioat_dma, int dca)
ioat_dma->dca = ioat_dca_init(pdev, ioat_dma->reg_base);
/* disable relaxed ordering */
err = pcie_capability_read_word(pdev, IOAT_DEVCTRL_OFFSET, &val16);
err = pcie_capability_read_word(pdev, PCI_EXP_DEVCTL, &val16);
if (err)
return pcibios_err_to_errno(err);
/* clear relaxed ordering enable */
val16 &= ~IOAT_DEVCTRL_ROE;
err = pcie_capability_write_word(pdev, IOAT_DEVCTRL_OFFSET, val16);
val16 &= ~PCI_EXP_DEVCTL_RELAX_EN;
err = pcie_capability_write_word(pdev, PCI_EXP_DEVCTL, val16);
if (err)
return pcibios_err_to_errno(err);
@ -1380,15 +1379,11 @@ static int ioat_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
if (is_skx_ioat(pdev))
device->version = IOAT_VER_3_2;
err = ioat3_dma_probe(device, ioat_dca_enabled);
if (device->version >= IOAT_VER_3_3)
pci_enable_pcie_error_reporting(pdev);
} else
return -ENODEV;
if (err) {
dev_err(dev, "Intel(R) I/OAT DMA Engine init failed\n");
pci_disable_pcie_error_reporting(pdev);
return -ENODEV;
}
@ -1411,7 +1406,6 @@ static void ioat_remove(struct pci_dev *pdev)
device->dca = NULL;
}
pci_disable_pcie_error_reporting(pdev);
ioat_dma_remove(device);
}

7
drivers/dma/ioat/registers.h
View File

@ -14,13 +14,6 @@
#define IOAT_PCI_CHANERR_INT_OFFSET 0x180
#define IOAT_PCI_CHANERRMASK_INT_OFFSET 0x184
/* PCIe config registers */
/* EXPCAPID + N */
#define IOAT_DEVCTRL_OFFSET 0x8
/* relaxed ordering enable */
#define IOAT_DEVCTRL_ROE 0x10
/* MMIO Device Registers */
#define IOAT_CHANCNT_OFFSET 0x00 /* 8-bit */

35
drivers/dma/mv_xor_v2.c
View File

@ -739,32 +739,18 @@ static int mv_xor_v2_probe(struct platform_device *pdev)
if (ret)
return ret;
xor_dev->reg_clk = devm_clk_get(&pdev->dev, "reg");
if (PTR_ERR(xor_dev->reg_clk) != -ENOENT) {
if (!IS_ERR(xor_dev->reg_clk)) {
ret = clk_prepare_enable(xor_dev->reg_clk);
if (ret)
return ret;
} else {
return PTR_ERR(xor_dev->reg_clk);
}
}
xor_dev->reg_clk = devm_clk_get_optional_enabled(&pdev->dev, "reg");
if (IS_ERR(xor_dev->reg_clk))
return PTR_ERR(xor_dev->reg_clk);
xor_dev->clk = devm_clk_get(&pdev->dev, NULL);
if (PTR_ERR(xor_dev->clk) == -EPROBE_DEFER) {
ret = EPROBE_DEFER;
goto disable_reg_clk;
}
if (!IS_ERR(xor_dev->clk)) {
ret = clk_prepare_enable(xor_dev->clk);
if (ret)
goto disable_reg_clk;
}
xor_dev->clk = devm_clk_get_enabled(&pdev->dev, NULL);
if (IS_ERR(xor_dev->clk))
return PTR_ERR(xor_dev->clk);
ret = platform_msi_domain_alloc_irqs(&pdev->dev, 1,
mv_xor_v2_set_msi_msg);
if (ret)
goto disable_clk;
return ret;
xor_dev->irq = msi_get_virq(&pdev->dev, 0);
@ -866,10 +852,6 @@ free_hw_desq:
xor_dev->hw_desq_virt, xor_dev->hw_desq);
free_msi_irqs:
platform_msi_domain_free_irqs(&pdev->dev);
disable_clk:
clk_disable_unprepare(xor_dev->clk);
disable_reg_clk:
clk_disable_unprepare(xor_dev->reg_clk);
return ret;
}
@ -889,9 +871,6 @@ static int mv_xor_v2_remove(struct platform_device *pdev)
tasklet_kill(&xor_dev->irq_tasklet);
clk_disable_unprepare(xor_dev->clk);
clk_disable_unprepare(xor_dev->reg_clk);
return 0;
}

2
drivers/dma/of-dma.c
View File

@ -264,7 +264,7 @@ struct dma_chan *of_dma_request_slave_channel(struct device_node *np,
}
/* Silently fail if there is not even the "dmas" property */
if (!of_find_property(np, "dmas", NULL))
if (!of_property_present(np, "dmas"))
return ERR_PTR(-ENODEV);
count = of_property_count_strings(np, "dma-names");

1
drivers/dma/qcom/gpi.c
View File

@ -1966,7 +1966,6 @@ error_alloc_ev_ring:
error_config_int:
gpi_free_ring(&gpii->ev_ring, gpii);
exit_gpi_init:
mutex_unlock(&gpii->ctrl_lock);
return ret;
}

2
drivers/dma/qcom/hidma_mgmt.c
View File

@ -12,6 +12,8 @@
#include <linux/of_address.h>
#include <linux/of_irq.h>
#include <linux/of_platform.h>
#include <linux/of_device.h>
#include <linux/platform_device.h>
#include <linux/module.h>
#include <linux/uaccess.h>
#include <linux/slab.h>

18
drivers/dma/sh/rz-dmac.c
View File

@ -20,6 +20,7 @@
#include <linux/of_platform.h>
#include <linux/platform_device.h>
#include <linux/pm_runtime.h>
#include <linux/reset.h>
#include <linux/slab.h>
#include <linux/spinlock.h>
@ -66,8 +67,6 @@ struct rz_dmac_chan {
struct rz_dmac_desc *desc;
int descs_allocated;
enum dma_slave_buswidth src_word_size;
enum dma_slave_buswidth dst_word_size;
dma_addr_t src_per_address;
dma_addr_t dst_per_address;
@ -92,6 +91,7 @@ struct rz_dmac_chan {
struct rz_dmac {
struct dma_device engine;
struct device *dev;
struct reset_control *rstc;
void __iomem *base;
void __iomem *ext_base;
@ -601,9 +601,7 @@ static int rz_dmac_config(struct dma_chan *chan,
u32 val;
channel->src_per_address = config->src_addr;
channel->src_word_size = config->src_addr_width;
channel->dst_per_address = config->dst_addr;
channel->dst_word_size = config->dst_addr_width;
val = rz_dmac_ds_to_val_mapping(config->dst_addr_width);
if (val == CHCFG_DS_INVALID)
@ -889,6 +887,11 @@ static int rz_dmac_probe(struct platform_device *pdev)
/* Initialize the channels. */
INIT_LIST_HEAD(&dmac->engine.channels);
dmac->rstc = devm_reset_control_array_get_exclusive(&pdev->dev);
if (IS_ERR(dmac->rstc))
return dev_err_probe(&pdev->dev, PTR_ERR(dmac->rstc),
"failed to get resets\n");
pm_runtime_enable(&pdev->dev);
ret = pm_runtime_resume_and_get(&pdev->dev);
if (ret < 0) {
@ -896,6 +899,10 @@ static int rz_dmac_probe(struct platform_device *pdev)
goto err_pm_disable;
}
ret = reset_control_deassert(dmac->rstc);
if (ret)
goto err_pm_runtime_put;
for (i = 0; i < dmac->n_channels; i++) {
ret = rz_dmac_chan_probe(dmac, &dmac->channels[i], i);
if (ret < 0)
@ -940,6 +947,7 @@ static int rz_dmac_probe(struct platform_device *pdev)
dma_register_err:
of_dma_controller_free(pdev->dev.of_node);
err:
reset_control_assert(dmac->rstc);
channel_num = i ? i - 1 : 0;
for (i = 0; i < channel_num; i++) {
struct rz_dmac_chan *channel = &dmac->channels[i];
@ -950,6 +958,7 @@ err:
channel->lmdesc.base_dma);
}
err_pm_runtime_put:
pm_runtime_put(&pdev->dev);
err_pm_disable:
pm_runtime_disable(&pdev->dev);
@ -972,6 +981,7 @@ static int rz_dmac_remove(struct platform_device *pdev)
}
of_dma_controller_free(pdev->dev.of_node);
dma_async_device_unregister(&dmac->engine);
reset_control_assert(dmac->rstc);
pm_runtime_put(&pdev->dev);
pm_runtime_disable(&pdev->dev);

5
drivers/dma/tegra20-apb-dma.c
View File

@ -233,11 +233,6 @@ static inline void tdma_write(struct tegra_dma *tdma, u32 reg, u32 val)
writel(val, tdma->base_addr + reg);
}
static inline u32 tdma_read(struct tegra_dma *tdma, u32 reg)
{
return readl(tdma->base_addr + reg);
}
static inline void tdc_write(struct tegra_dma_channel *tdc,
u32 reg, u32 val)
{

3
drivers/dma/ti/Makefile
View File

@ -11,6 +11,7 @@ k3-psil-lib-objs := k3-psil.o \
k3-psil-am64.o \
k3-psil-j721s2.o \
k3-psil-am62.o \
k3-psil-am62a.o
k3-psil-am62a.o \
k3-psil-j784s4.o
obj-$(CONFIG_TI_K3_PSIL) += k3-psil-lib.o
obj-$(CONFIG_TI_DMA_CROSSBAR) += dma-crossbar.o

8
drivers/dma/ti/edma.c
View File

@ -318,14 +318,6 @@ static inline void edma_modify(struct edma_cc *ecc, int offset, unsigned and,
edma_write(ecc, offset, val);
}
static inline void edma_and(struct edma_cc *ecc, int offset, unsigned and)
{
unsigned val = edma_read(ecc, offset);
val &= and;
edma_write(ecc, offset, val);
}
static inline void edma_or(struct edma_cc *ecc, int offset, unsigned or)
{
unsigned val = edma_read(ecc, offset);

354
drivers/dma/ti/k3-psil-j784s4.c Normal file
View File

@ -0,0 +1,354 @@
// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (C) 2021 Texas Instruments Incorporated - https://www.ti.com
*/
#include <linux/kernel.h>
#include "k3-psil-priv.h"
#define PSIL_PDMA_XY_TR(x) \
{ \
.thread_id = x, \
.ep_config = { \
.ep_type = PSIL_EP_PDMA_XY, \
}, \
}
#define PSIL_PDMA_XY_PKT(x) \
{ \
.thread_id = x, \
.ep_config = { \
.ep_type = PSIL_EP_PDMA_XY, \
.pkt_mode = 1, \
}, \
}
#define PSIL_PDMA_MCASP(x) \
{ \
.thread_id = x, \
.ep_config = { \
.ep_type = PSIL_EP_PDMA_XY, \
.pdma_acc32 = 1, \
.pdma_burst = 1, \
}, \
}
#define PSIL_ETHERNET(x) \
{ \
.thread_id = x, \
.ep_config = { \
.ep_type = PSIL_EP_NATIVE, \
.pkt_mode = 1, \
.needs_epib = 1, \
.psd_size = 16, \
}, \
}
#define PSIL_SA2UL(x, tx) \
{ \
.thread_id = x, \
.ep_config = { \
.ep_type = PSIL_EP_NATIVE, \
.pkt_mode = 1, \
.needs_epib = 1, \
.psd_size = 64, \
.notdpkt = tx, \
}, \
}
#define PSIL_CSI2RX(x) \
{ \
.thread_id = x, \
.ep_config = { \
.ep_type = PSIL_EP_NATIVE, \
}, \
}
/* PSI-L source thread IDs, used for RX (DMA_DEV_TO_MEM) */
static struct psil_ep j784s4_src_ep_map[] = {
/* PDMA_MCASP - McASP0-4 */
PSIL_PDMA_MCASP(0x4400),
PSIL_PDMA_MCASP(0x4401),
PSIL_PDMA_MCASP(0x4402),
PSIL_PDMA_MCASP(0x4403),
PSIL_PDMA_MCASP(0x4404),
/* PDMA_SPI_G0 - SPI0-3 */
PSIL_PDMA_XY_PKT(0x4600),
PSIL_PDMA_XY_PKT(0x4601),
PSIL_PDMA_XY_PKT(0x4602),
PSIL_PDMA_XY_PKT(0x4603),
PSIL_PDMA_XY_PKT(0x4604),
PSIL_PDMA_XY_PKT(0x4605),
PSIL_PDMA_XY_PKT(0x4606),
PSIL_PDMA_XY_PKT(0x4607),
PSIL_PDMA_XY_PKT(0x4608),
PSIL_PDMA_XY_PKT(0x4609),
PSIL_PDMA_XY_PKT(0x460a),
PSIL_PDMA_XY_PKT(0x460b),
PSIL_PDMA_XY_PKT(0x460c),
PSIL_PDMA_XY_PKT(0x460d),
PSIL_PDMA_XY_PKT(0x460e),
PSIL_PDMA_XY_PKT(0x460f),
/* PDMA_SPI_G1 - SPI4-7 */
PSIL_PDMA_XY_PKT(0x4620),
PSIL_PDMA_XY_PKT(0x4621),
PSIL_PDMA_XY_PKT(0x4622),
PSIL_PDMA_XY_PKT(0x4623),
PSIL_PDMA_XY_PKT(0x4624),
PSIL_PDMA_XY_PKT(0x4625),
PSIL_PDMA_XY_PKT(0x4626),
PSIL_PDMA_XY_PKT(0x4627),
PSIL_PDMA_XY_PKT(0x4628),
PSIL_PDMA_XY_PKT(0x4629),
PSIL_PDMA_XY_PKT(0x462a),
PSIL_PDMA_XY_PKT(0x462b),
PSIL_PDMA_XY_PKT(0x462c),
PSIL_PDMA_XY_PKT(0x462d),
PSIL_PDMA_XY_PKT(0x462e),
PSIL_PDMA_XY_PKT(0x462f),
/* MAIN_CPSW2G */
PSIL_ETHERNET(0x4640),
/* PDMA_USART_G0 - UART0-1 */
PSIL_PDMA_XY_PKT(0x4700),
PSIL_PDMA_XY_PKT(0x4701),
/* PDMA_USART_G1 - UART2-3 */
PSIL_PDMA_XY_PKT(0x4702),
PSIL_PDMA_XY_PKT(0x4703),
/* PDMA_USART_G2 - UART4-9 */
PSIL_PDMA_XY_PKT(0x4704),
PSIL_PDMA_XY_PKT(0x4705),
PSIL_PDMA_XY_PKT(0x4706),
PSIL_PDMA_XY_PKT(0x4707),
PSIL_PDMA_XY_PKT(0x4708),
PSIL_PDMA_XY_PKT(0x4709),
/* CSI2RX */
PSIL_CSI2RX(0x4900),
PSIL_CSI2RX(0x4901),
PSIL_CSI2RX(0x4902),
PSIL_CSI2RX(0x4903),
PSIL_CSI2RX(0x4940),
PSIL_CSI2RX(0x4941),
PSIL_CSI2RX(0x4942),
PSIL_CSI2RX(0x4943),
PSIL_CSI2RX(0x4944),
PSIL_CSI2RX(0x4945),
PSIL_CSI2RX(0x4946),
PSIL_CSI2RX(0x4947),
PSIL_CSI2RX(0x4948),
PSIL_CSI2RX(0x4949),
PSIL_CSI2RX(0x494a),
PSIL_CSI2RX(0x494b),
PSIL_CSI2RX(0x494c),
PSIL_CSI2RX(0x494d),
PSIL_CSI2RX(0x494e),
PSIL_CSI2RX(0x494f),
PSIL_CSI2RX(0x4950),
PSIL_CSI2RX(0x4951),
PSIL_CSI2RX(0x4952),
PSIL_CSI2RX(0x4953),
PSIL_CSI2RX(0x4954),
PSIL_CSI2RX(0x4955),
PSIL_CSI2RX(0x4956),
PSIL_CSI2RX(0x4957),
PSIL_CSI2RX(0x4958),
PSIL_CSI2RX(0x4959),
PSIL_CSI2RX(0x495a),
PSIL_CSI2RX(0x495b),
PSIL_CSI2RX(0x495c),
PSIL_CSI2RX(0x495d),
PSIL_CSI2RX(0x495e),
PSIL_CSI2RX(0x495f),
PSIL_CSI2RX(0x4960),
PSIL_CSI2RX(0x4961),
PSIL_CSI2RX(0x4962),
PSIL_CSI2RX(0x4963),
PSIL_CSI2RX(0x4964),
PSIL_CSI2RX(0x4965),
PSIL_CSI2RX(0x4966),
PSIL_CSI2RX(0x4967),
PSIL_CSI2RX(0x4968),
PSIL_CSI2RX(0x4969),
PSIL_CSI2RX(0x496a),
PSIL_CSI2RX(0x496b),
PSIL_CSI2RX(0x496c),
PSIL_CSI2RX(0x496d),
PSIL_CSI2RX(0x496e),
PSIL_CSI2RX(0x496f),
PSIL_CSI2RX(0x4970),
PSIL_CSI2RX(0x4971),
PSIL_CSI2RX(0x4972),
PSIL_CSI2RX(0x4973),
PSIL_CSI2RX(0x4974),
PSIL_CSI2RX(0x4975),
PSIL_CSI2RX(0x4976),
PSIL_CSI2RX(0x4977),
PSIL_CSI2RX(0x4978),
PSIL_CSI2RX(0x4979),
PSIL_CSI2RX(0x497a),
PSIL_CSI2RX(0x497b),
PSIL_CSI2RX(0x497c),
PSIL_CSI2RX(0x497d),
PSIL_CSI2RX(0x497e),
PSIL_CSI2RX(0x497f),
PSIL_CSI2RX(0x4980),
PSIL_CSI2RX(0x4981),
PSIL_CSI2RX(0x4982),
PSIL_CSI2RX(0x4983),
PSIL_CSI2RX(0x4984),
PSIL_CSI2RX(0x4985),
PSIL_CSI2RX(0x4986),
PSIL_CSI2RX(0x4987),
PSIL_CSI2RX(0x4988),
PSIL_CSI2RX(0x4989),
PSIL_CSI2RX(0x498a),
PSIL_CSI2RX(0x498b),
PSIL_CSI2RX(0x498c),
PSIL_CSI2RX(0x498d),
PSIL_CSI2RX(0x498e),
PSIL_CSI2RX(0x498f),
PSIL_CSI2RX(0x4990),
PSIL_CSI2RX(0x4991),
PSIL_CSI2RX(0x4992),
PSIL_CSI2RX(0x4993),
PSIL_CSI2RX(0x4994),
PSIL_CSI2RX(0x4995),
PSIL_CSI2RX(0x4996),
PSIL_CSI2RX(0x4997),
PSIL_CSI2RX(0x4998),
PSIL_CSI2RX(0x4999),
PSIL_CSI2RX(0x499a),
PSIL_CSI2RX(0x499b),
PSIL_CSI2RX(0x499c),
PSIL_CSI2RX(0x499d),
PSIL_CSI2RX(0x499e),
PSIL_CSI2RX(0x499f),
/* MAIN_CPSW9G */
PSIL_ETHERNET(0x4a00),
/* MAIN-SA2UL */
PSIL_SA2UL(0x4a40, 0),
PSIL_SA2UL(0x4a41, 0),
PSIL_SA2UL(0x4a42, 0),
PSIL_SA2UL(0x4a43, 0),
/* MCU_CPSW0 */
PSIL_ETHERNET(0x7000),
/* MCU_PDMA0 (MCU_PDMA_MISC_G0) - SPI0 */
PSIL_PDMA_XY_PKT(0x7100),
PSIL_PDMA_XY_PKT(0x7101),
PSIL_PDMA_XY_PKT(0x7102),
PSIL_PDMA_XY_PKT(0x7103),
/* MCU_PDMA1 (MCU_PDMA_MISC_G1) - SPI1-2 */
PSIL_PDMA_XY_PKT(0x7200),
PSIL_PDMA_XY_PKT(0x7201),
PSIL_PDMA_XY_PKT(0x7202),
PSIL_PDMA_XY_PKT(0x7203),
PSIL_PDMA_XY_PKT(0x7204),
PSIL_PDMA_XY_PKT(0x7205),
PSIL_PDMA_XY_PKT(0x7206),
PSIL_PDMA_XY_PKT(0x7207),
/* MCU_PDMA2 (MCU_PDMA_MISC_G2) - UART0 */
PSIL_PDMA_XY_PKT(0x7300),
/* MCU_PDMA_ADC - ADC0-1 */
PSIL_PDMA_XY_TR(0x7400),
PSIL_PDMA_XY_TR(0x7401),
PSIL_PDMA_XY_TR(0x7402),
PSIL_PDMA_XY_TR(0x7403),
/* MCU_SA2UL */
PSIL_SA2UL(0x7500, 0),
PSIL_SA2UL(0x7501, 0),
PSIL_SA2UL(0x7502, 0),
PSIL_SA2UL(0x7503, 0),
};
/* PSI-L destination thread IDs, used for TX (DMA_MEM_TO_DEV) */
static struct psil_ep j784s4_dst_ep_map[] = {
/* MAIN_CPSW2G */
PSIL_ETHERNET(0xc640),
PSIL_ETHERNET(0xc641),
PSIL_ETHERNET(0xc642),
PSIL_ETHERNET(0xc643),
PSIL_ETHERNET(0xc644),
PSIL_ETHERNET(0xc645),
PSIL_ETHERNET(0xc646),
PSIL_ETHERNET(0xc647),
/* MAIN_CPSW9G */
PSIL_ETHERNET(0xca00),
PSIL_ETHERNET(0xca01),
PSIL_ETHERNET(0xca02),
PSIL_ETHERNET(0xca03),
PSIL_ETHERNET(0xca04),
PSIL_ETHERNET(0xca05),
PSIL_ETHERNET(0xca06),
PSIL_ETHERNET(0xca07),
/* MAIN-SA2UL */
PSIL_SA2UL(0xca40, 1),
PSIL_SA2UL(0xca41, 1),
/* PDMA_SPI_G0 - SPI0-3 */
PSIL_PDMA_XY_PKT(0xc600),
PSIL_PDMA_XY_PKT(0xc601),
PSIL_PDMA_XY_PKT(0xc602),
PSIL_PDMA_XY_PKT(0xc603),
PSIL_PDMA_XY_PKT(0xc604),
PSIL_PDMA_XY_PKT(0xc605),
PSIL_PDMA_XY_PKT(0xc606),
PSIL_PDMA_XY_PKT(0xc607),
PSIL_PDMA_XY_PKT(0xc608),
PSIL_PDMA_XY_PKT(0xc609),
PSIL_PDMA_XY_PKT(0xc60a),
PSIL_PDMA_XY_PKT(0xc60b),
PSIL_PDMA_XY_PKT(0xc60c),
PSIL_PDMA_XY_PKT(0xc60d),
PSIL_PDMA_XY_PKT(0xc60e),
PSIL_PDMA_XY_PKT(0xc60f),
/* PDMA_SPI_G1 - SPI4-7 */
PSIL_PDMA_XY_PKT(0xc620),
PSIL_PDMA_XY_PKT(0xc621),
PSIL_PDMA_XY_PKT(0xc622),
PSIL_PDMA_XY_PKT(0xc623),
PSIL_PDMA_XY_PKT(0xc624),
PSIL_PDMA_XY_PKT(0xc625),
PSIL_PDMA_XY_PKT(0xc626),
PSIL_PDMA_XY_PKT(0xc627),
PSIL_PDMA_XY_PKT(0xc628),
PSIL_PDMA_XY_PKT(0xc629),
PSIL_PDMA_XY_PKT(0xc62a),
PSIL_PDMA_XY_PKT(0xc62b),
PSIL_PDMA_XY_PKT(0xc62c),
PSIL_PDMA_XY_PKT(0xc62d),
PSIL_PDMA_XY_PKT(0xc62e),
PSIL_PDMA_XY_PKT(0xc62f),
/* MCU_CPSW0 */
PSIL_ETHERNET(0xf000),
PSIL_ETHERNET(0xf001),
PSIL_ETHERNET(0xf002),
PSIL_ETHERNET(0xf003),
PSIL_ETHERNET(0xf004),
PSIL_ETHERNET(0xf005),
PSIL_ETHERNET(0xf006),
PSIL_ETHERNET(0xf007),
/* MCU_PDMA_MISC_G0 - SPI0 */
PSIL_PDMA_XY_PKT(0xf100),
PSIL_PDMA_XY_PKT(0xf101),
PSIL_PDMA_XY_PKT(0xf102),
PSIL_PDMA_XY_PKT(0xf103),
/* MCU_PDMA_MISC_G1 - SPI1-2 */
PSIL_PDMA_XY_PKT(0xf200),
PSIL_PDMA_XY_PKT(0xf201),
PSIL_PDMA_XY_PKT(0xf202),
PSIL_PDMA_XY_PKT(0xf203),
PSIL_PDMA_XY_PKT(0xf204),
PSIL_PDMA_XY_PKT(0xf205),
PSIL_PDMA_XY_PKT(0xf206),
PSIL_PDMA_XY_PKT(0xf207),
/* MCU_SA2UL */
PSIL_SA2UL(0xf500, 1),
PSIL_SA2UL(0xf501, 1),
};
struct psil_ep_map j784s4_ep_map = {
.name = "j784s4",
.src = j784s4_src_ep_map,
.src_count = ARRAY_SIZE(j784s4_src_ep_map),
.dst = j784s4_dst_ep_map,
.dst_count = ARRAY_SIZE(j784s4_dst_ep_map),
};

1
drivers/dma/ti/k3-psil-priv.h
View File

@ -44,5 +44,6 @@ extern struct psil_ep_map am64_ep_map;
extern struct psil_ep_map j721s2_ep_map;
extern struct psil_ep_map am62_ep_map;
extern struct psil_ep_map am62a_ep_map;
extern struct psil_ep_map j784s4_ep_map;
#endif /* K3_PSIL_PRIV_H_ */

1
drivers/dma/ti/k3-psil.c
View File

@ -25,6 +25,7 @@ static const struct soc_device_attribute k3_soc_devices[] = {
{ .family = "J721S2", .data = &j721s2_ep_map },
{ .family = "AM62X", .data = &am62_ep_map },
{ .family = "AM62AX", .data = &am62a_ep_map },
{ .family = "J784S4", .data = &j784s4_ep_map },
{ /* sentinel */ }
};

75
drivers/dma/ti/k3-udma.c
View File

@ -305,6 +305,8 @@ struct udma_chan {
/* Channel configuration parameters */
struct udma_chan_config config;
/* Channel configuration parameters (backup) */
struct udma_chan_config backup_config;
/* dmapool for packet mode descriptors */
bool use_dma_pool;
@ -2964,6 +2966,7 @@ udma_prep_slave_sg_triggered_tr(struct udma_chan *uc, struct scatterlist *sgl,
struct scatterlist *sgent;
struct cppi5_tr_type15_t *tr_req = NULL;
enum dma_slave_buswidth dev_width;
u32 csf = CPPI5_TR_CSF_SUPR_EVT;
u16 tr_cnt0, tr_cnt1;
dma_addr_t dev_addr;
struct udma_desc *d;
@ -3034,6 +3037,7 @@ udma_prep_slave_sg_triggered_tr(struct udma_chan *uc, struct scatterlist *sgl,
if (uc->ud->match_data->type == DMA_TYPE_UDMA) {
asel = 0;
csf |= CPPI5_TR_CSF_EOL_ICNT0;
} else {
asel = (u64)uc->config.asel << K3_ADDRESS_ASEL_SHIFT;
dev_addr |= asel;
@ -3057,7 +3061,7 @@ udma_prep_slave_sg_triggered_tr(struct udma_chan *uc, struct scatterlist *sgl,
cppi5_tr_init(&tr_req[tr_idx].flags, CPPI5_TR_TYPE15, false,
true, CPPI5_TR_EVENT_SIZE_COMPLETION, 0);
cppi5_tr_csf_set(&tr_req[tr_idx].flags, CPPI5_TR_CSF_SUPR_EVT);
cppi5_tr_csf_set(&tr_req[tr_idx].flags, csf);
cppi5_tr_set_trigger(&tr_req[tr_idx].flags,
uc->config.tr_trigger_type,
CPPI5_TR_TRIGGER_TYPE_ICNT2_DEC, 0, 0);
@ -3103,8 +3107,7 @@ udma_prep_slave_sg_triggered_tr(struct udma_chan *uc, struct scatterlist *sgl,
cppi5_tr_init(&tr_req[tr_idx].flags, CPPI5_TR_TYPE15,
false, true,
CPPI5_TR_EVENT_SIZE_COMPLETION, 0);
cppi5_tr_csf_set(&tr_req[tr_idx].flags,
CPPI5_TR_CSF_SUPR_EVT);
cppi5_tr_csf_set(&tr_req[tr_idx].flags, csf);
cppi5_tr_set_trigger(&tr_req[tr_idx].flags,
uc->config.tr_trigger_type,
CPPI5_TR_TRIGGER_TYPE_ICNT2_DEC,
@ -3148,8 +3151,7 @@ udma_prep_slave_sg_triggered_tr(struct udma_chan *uc, struct scatterlist *sgl,
d->residue += sg_len;
}
cppi5_tr_csf_set(&tr_req[tr_idx - 1].flags,
CPPI5_TR_CSF_SUPR_EVT | CPPI5_TR_CSF_EOP);
cppi5_tr_csf_set(&tr_req[tr_idx - 1].flags, csf | CPPI5_TR_CSF_EOP);
return d;
}
@ -3678,6 +3680,7 @@ udma_prep_dma_memcpy(struct dma_chan *chan, dma_addr_t dest, dma_addr_t src,
int num_tr;
size_t tr_size = sizeof(struct cppi5_tr_type15_t);
u16 tr0_cnt0, tr0_cnt1, tr1_cnt0;
u32 csf = CPPI5_TR_CSF_SUPR_EVT;
if (uc->config.dir != DMA_MEM_TO_MEM) {
dev_err(chan->device->dev,
@ -3708,13 +3711,15 @@ udma_prep_dma_memcpy(struct dma_chan *chan, dma_addr_t dest, dma_addr_t src,
if (uc->ud->match_data->type != DMA_TYPE_UDMA) {
src |= (u64)uc->ud->asel << K3_ADDRESS_ASEL_SHIFT;
dest |= (u64)uc->ud->asel << K3_ADDRESS_ASEL_SHIFT;
} else {
csf |= CPPI5_TR_CSF_EOL_ICNT0;
}
tr_req = d->hwdesc[0].tr_req_base;
cppi5_tr_init(&tr_req[0].flags, CPPI5_TR_TYPE15, false, true,
CPPI5_TR_EVENT_SIZE_COMPLETION, 0);
cppi5_tr_csf_set(&tr_req[0].flags, CPPI5_TR_CSF_SUPR_EVT);
cppi5_tr_csf_set(&tr_req[0].flags, csf);
tr_req[0].addr = src;
tr_req[0].icnt0 = tr0_cnt0;
@ -3733,7 +3738,7 @@ udma_prep_dma_memcpy(struct dma_chan *chan, dma_addr_t dest, dma_addr_t src,
if (num_tr == 2) {
cppi5_tr_init(&tr_req[1].flags, CPPI5_TR_TYPE15, false, true,
CPPI5_TR_EVENT_SIZE_COMPLETION, 0);
cppi5_tr_csf_set(&tr_req[1].flags, CPPI5_TR_CSF_SUPR_EVT);
cppi5_tr_csf_set(&tr_req[1].flags, csf);
tr_req[1].addr = src + tr0_cnt1 * tr0_cnt0;
tr_req[1].icnt0 = tr1_cnt0;
@ -3748,8 +3753,7 @@ udma_prep_dma_memcpy(struct dma_chan *chan, dma_addr_t dest, dma_addr_t src,
tr_req[1].dicnt3 = 1;
}
cppi5_tr_csf_set(&tr_req[num_tr - 1].flags,
CPPI5_TR_CSF_SUPR_EVT | CPPI5_TR_CSF_EOP);
cppi5_tr_csf_set(&tr_req[num_tr - 1].flags, csf | CPPI5_TR_CSF_EOP);
if (uc->config.metadata_size)
d->vd.tx.metadata_ops = &metadata_ops;
@ -4412,6 +4416,7 @@ static const struct soc_device_attribute k3_soc_devices[] = {
{ .family = "J721S2", .data = &j721e_soc_data},
{ .family = "AM62X", .data = &am64_soc_data },
{ .family = "AM62AX", .data = &am64_soc_data },
{ .family = "J784S4", .data = &j721e_soc_data },
{ /* sentinel */ }
};
@ -5522,11 +5527,63 @@ static int udma_probe(struct platform_device *pdev)
return ret;
}
static int udma_pm_suspend(struct device *dev)
{
struct udma_dev *ud = dev_get_drvdata(dev);
struct dma_device *dma_dev = &ud->ddev;
struct dma_chan *chan;
struct udma_chan *uc;
list_for_each_entry(chan, &dma_dev->channels, device_node) {
if (chan->client_count) {
uc = to_udma_chan(chan);
/* backup the channel configuration */
memcpy(&uc->backup_config, &uc->config,
sizeof(struct udma_chan_config));
dev_dbg(dev, "Suspending channel %s\n",
dma_chan_name(chan));
ud->ddev.device_free_chan_resources(chan);
}
}
return 0;
}
static int udma_pm_resume(struct device *dev)
{
struct udma_dev *ud = dev_get_drvdata(dev);
struct dma_device *dma_dev = &ud->ddev;
struct dma_chan *chan;
struct udma_chan *uc;
int ret;
list_for_each_entry(chan, &dma_dev->channels, device_node) {
if (chan->client_count) {
uc = to_udma_chan(chan);
/* restore the channel configuration */
memcpy(&uc->config, &uc->backup_config,
sizeof(struct udma_chan_config));
dev_dbg(dev, "Resuming channel %s\n",
dma_chan_name(chan));
ret = ud->ddev.device_alloc_chan_resources(chan);
if (ret)
return ret;
}
}
return 0;
}
static const struct dev_pm_ops udma_pm_ops = {
SET_LATE_SYSTEM_SLEEP_PM_OPS(udma_pm_suspend, udma_pm_resume)
};
static struct platform_driver udma_driver = {
.driver = {
.name = "ti-udma",
.of_match_table = udma_of_match,
.suppress_bind_attrs = true,
.pm = &udma_pm_ops,
},
.probe = udma_probe,
};

6
drivers/dma/xilinx/zynqmp_dma.c
View File

@ -1060,7 +1060,11 @@ static int zynqmp_dma_probe(struct platform_device *pdev)
zdev->dev = &pdev->dev;
INIT_LIST_HEAD(&zdev->common.channels);
dma_set_mask(&pdev->dev, DMA_BIT_MASK(44));
ret = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(44));
if (ret) {
dev_err(&pdev->dev, "DMA not available for address range\n");
return ret;
}
dma_cap_set(DMA_MEMCPY, zdev->common.cap_mask);
p = &zdev->common;

1
include/linux/dma/ti-cppi5.h
View File

@ -616,6 +616,7 @@ static inline void *cppi5_hdesc_get_swdata(struct cppi5_host_desc_t *desc)
#define CPPI5_TR_CSF_SUPR_EVT BIT(2)
#define CPPI5_TR_CSF_EOL_ADV_SHIFT (4U)
#define CPPI5_TR_CSF_EOL_ADV_MASK GENMASK(6, 4)
#define CPPI5_TR_CSF_EOL_ICNT0 BIT(4)
#define CPPI5_TR_CSF_EOP BIT(7)
/**

48
include/uapi/linux/idxd.h
View File

@ -30,6 +30,7 @@ enum idxd_scmd_stat {
IDXD_SCMD_WQ_NO_PRIV = 0x800f0000,
IDXD_SCMD_WQ_IRQ_ERR = 0x80100000,
IDXD_SCMD_WQ_USER_NO_IOMMU = 0x80110000,
IDXD_SCMD_DEV_EVL_ERR = 0x80120000,
};
#define IDXD_SCMD_SOFTERR_MASK 0x80000000
@ -72,12 +73,14 @@ enum dsa_opcode {
DSA_OPCODE_CR_DELTA,
DSA_OPCODE_AP_DELTA,
DSA_OPCODE_DUALCAST,
DSA_OPCODE_TRANSL_FETCH,
DSA_OPCODE_CRCGEN = 0x10,
DSA_OPCODE_COPY_CRC,
DSA_OPCODE_DIF_CHECK,
DSA_OPCODE_DIF_INS,
DSA_OPCODE_DIF_STRP,
DSA_OPCODE_DIF_UPDT,
DSA_OPCODE_DIX_GEN = 0x17,
DSA_OPCODE_CFLUSH = 0x20,
};
@ -132,6 +135,8 @@ enum dsa_completion_status {
DSA_COMP_HW_ERR1,
DSA_COMP_HW_ERR_DRB,
DSA_COMP_TRANSLATION_FAIL,
DSA_COMP_DRAIN_EVL = 0x26,
DSA_COMP_BATCH_EVL_ERR,
};
enum iax_completion_status {
@ -167,6 +172,7 @@ enum iax_completion_status {
#define DSA_COMP_STATUS_MASK 0x7f
#define DSA_COMP_STATUS_WRITE 0x80
#define DSA_COMP_STATUS(status) ((status) & DSA_COMP_STATUS_MASK)
struct dsa_hw_desc {
uint32_t pasid:20;
@ -180,6 +186,8 @@ struct dsa_hw_desc {
uint64_t rdback_addr;
uint64_t pattern;
uint64_t desc_list_addr;
uint64_t pattern_lower;
uint64_t transl_fetch_addr;
};
union {
uint64_t dst_addr;
@ -190,6 +198,7 @@ struct dsa_hw_desc {
union {
uint32_t xfer_size;
uint32_t desc_count;
uint32_t region_size;
};
uint16_t int_handle;
uint16_t rsvd1;
@ -244,6 +253,26 @@ struct dsa_hw_desc {
uint16_t dest_app_tag_seed;
};
/* Fill */
uint64_t pattern_upper;
/* Translation fetch */
struct {
uint64_t transl_fetch_res;
uint32_t region_stride;
};
/* DIX generate */
struct {
uint8_t dix_gen_res;
uint8_t dest_dif_flags;
uint8_t dif_flags;
uint8_t dix_gen_res2[13];
uint32_t ref_tag_seed;
uint16_t app_tag_mask;
uint16_t app_tag_seed;
};
uint8_t op_specific[24];
};
} __attribute__((packed));
@ -284,8 +313,12 @@ struct dsa_completion_record {
uint8_t result;
uint8_t dif_status;
};
uint16_t rsvd;
uint32_t bytes_completed;
uint8_t fault_info;
uint8_t rsvd;
union {
uint32_t bytes_completed;
uint32_t descs_completed;
};
uint64_t fault_addr;
union {
/* common record */
@ -322,6 +355,14 @@ struct dsa_completion_record {
uint16_t dif_upd_dest_app_tag;
};
/* DIX generate */
struct {
uint64_t dix_gen_res;
uint32_t dix_ref_tag;
uint16_t dix_app_tag_mask;
uint16_t dix_app_tag;
};
uint8_t op_specific[16];
};
} __attribute__((packed));
@ -333,7 +374,8 @@ struct dsa_raw_completion_record {
struct iax_completion_record {
volatile uint8_t status;
uint8_t error_code;
uint16_t rsvd;
uint8_t fault_info;
uint8_t rsvd;
uint32_t bytes_completed;
uint64_t fault_addr;
uint32_t invalid_flags;