This patch adds a basic support for the Goya device. The code initializes
the device's PCI controller and PCI bars. It also initializes various S/W
structures and adds some basic helper functions.
Signed-off-by: Oded Gabbay <oded.gab...@gmail.com>
---
drivers/misc/habanalabs/Makefile | 4 +
drivers/misc/habanalabs/device.c | 71 +++
drivers/misc/habanalabs/goya/Makefile | 3 +
drivers/misc/habanalabs/goya/goya.c | 639 ++++++++++++++++++++
drivers/misc/habanalabs/goya/goyaP.h | 155 +++++
drivers/misc/habanalabs/habanalabs.h | 137 +++++
drivers/misc/habanalabs/habanalabs_drv.c | 3 +
drivers/misc/habanalabs/include/goya/goya.h | 41 ++
include/uapi/misc/habanalabs.h | 20 +
9 files changed, 1073 insertions(+)
create mode 100644 drivers/misc/habanalabs/goya/Makefile
create mode 100644 drivers/misc/habanalabs/goya/goya.c
create mode 100644 drivers/misc/habanalabs/goya/goyaP.h
create mode 100644 drivers/misc/habanalabs/include/goya/goya.h
create mode 100644 include/uapi/misc/habanalabs.h
diff --git a/drivers/misc/habanalabs/Makefile b/drivers/misc/habanalabs/Makefile
index 0910f7fa34ec..64bad3ca21c6 100644
--- a/drivers/misc/habanalabs/Makefile
+++ b/drivers/misc/habanalabs/Makefile
@@ -5,3 +5,7 @@
obj-m := habanalabs.o
habanalabs-y := habanalabs_drv.o device.o
+
+include $(src)/goya/Makefile
+habanalabs-y += $(HL_GOYA_FILES)
+
diff --git a/drivers/misc/habanalabs/device.c b/drivers/misc/habanalabs/device.c
index 3797a4281974..d77e070ae389 100644
--- a/drivers/misc/habanalabs/device.c
+++ b/drivers/misc/habanalabs/device.c
@@ -121,8 +121,11 @@ static int device_setup_cdev(struct hl_device *hdev,
struct class *hclass,
*/
static int device_early_init(struct hl_device *hdev)
{
+ int rc;
+
switch (hdev->asic_type) {
case ASIC_GOYA:
+ goya_set_asic_funcs(hdev);
strlcpy(hdev->asic_name, "GOYA", sizeof(hdev->asic_name));
break;
default:
@@ -131,6 +134,10 @@ static int device_early_init(struct hl_device *hdev)
return -EINVAL;
}
+ rc = hdev->asic_funcs->early_init(hdev);
+ if (rc)
+ return rc;
+
return 0;
}
@@ -142,6 +149,10 @@ static int device_early_init(struct hl_device *hdev)
*/
static void device_early_fini(struct hl_device *hdev)
{
+
+ if (hdev->asic_funcs->early_fini)
+ hdev->asic_funcs->early_fini(hdev);
+
}
/*
@@ -155,8 +166,15 @@ static void device_early_fini(struct hl_device *hdev)
*/
int hl_device_suspend(struct hl_device *hdev)
{
+ int rc;
+
pci_save_state(hdev->pdev);
+ rc = hdev->asic_funcs->suspend(hdev);
+ if (rc)
+ dev_err(hdev->dev,
+ "Failed to disable PCI access of device CPU\n");
+
/* Shut down the device */
pci_disable_device(hdev->pdev);
pci_set_power_state(hdev->pdev, PCI_D3hot);
@@ -186,6 +204,13 @@ int hl_device_resume(struct hl_device *hdev)
return rc;
}
+ rc = hdev->asic_funcs->resume(hdev);
+ if (rc) {
+ dev_err(hdev->dev,
+ "Failed to enable PCI access from device CPU\n");
+ return rc;
+ }
+
return 0;
}
@@ -213,11 +238,21 @@ int hl_device_init(struct hl_device *hdev, struct class
*hclass)
if (rc)
goto release_device;
+ /*
+ * Start calling ASIC initialization. First S/W then H/W and finally
+ * late init
+ */
+ rc = hdev->asic_funcs->sw_init(hdev);
+ if (rc)
+ goto early_fini;
+
dev_notice(hdev->dev,
"Successfully added device to habanalabs driver\n");
return 0;
+early_fini:
+ device_early_fini(hdev);
release_device:
device_destroy(hclass, hdev->dev->devt);
cdev_del(&hdev->cdev);
@@ -248,6 +283,9 @@ void hl_device_fini(struct hl_device *hdev)
/* Mark device as disabled */
hdev->disabled = true;
+ /* Call ASIC S/W finalize function */
+ hdev->asic_funcs->sw_fini(hdev);
+
device_early_fini(hdev);
/* Hide device from user */
@@ -334,3 +372,36 @@ int hl_poll_timeout_device_memory(struct hl_device *hdev,
void __iomem *addr,
return *val ? 0 : -ETIMEDOUT;
}
+
+/*
+ * MMIO register access helper functions.
+ */
+
+/*
+ * hl_rreg - Read an MMIO register
+ *
+ * @hdev: pointer to habanalabs device structure
+ * @reg: MMIO register offset (in bytes)
+ *
+ * Returns the value of the MMIO register we are asked to read
+ *
+ */
+inline u32 hl_rreg(struct hl_device *hdev, u32 reg)
+{
+ return readl(hdev->rmmio + reg);
+}
+
+/*
+ * hl_wreg - Write to an MMIO register
+ *
+ * @hdev: pointer to habanalabs device structure
+ * @reg: MMIO register offset (in bytes)
+ * @val: 32-bit value
+ *
+ * Writes the 32-bit value into the MMIO register
+ *
+ */
+inline void hl_wreg(struct hl_device *hdev, u32 reg, u32 val)
+{
+ writel(val, hdev->rmmio + reg);
+}
diff --git a/drivers/misc/habanalabs/goya/Makefile
b/drivers/misc/habanalabs/goya/Makefile
new file mode 100644
index 000000000000..38d43006386d
--- /dev/null
+++ b/drivers/misc/habanalabs/goya/Makefile
@@ -0,0 +1,3 @@
+subdir-ccflags-y += -I$(src)
+
+HL_GOYA_FILES := goya/goya.o
diff --git a/drivers/misc/habanalabs/goya/goya.c
b/drivers/misc/habanalabs/goya/goya.c
new file mode 100644
index 000000000000..47e7472b7472
--- /dev/null
+++ b/drivers/misc/habanalabs/goya/goya.c
@@ -0,0 +1,639 @@
+// SPDX-License-Identifier: GPL-2.0
+
+/*
+ * Copyright 2016-2018 HabanaLabs, Ltd.
+ * All Rights Reserved.
+ */
+
+#include "goyaP.h"
+#include "include/goya/asic_reg/goya_masks.h"
+
+#include <linux/fs.h>
+#include <linux/delay.h>
+#include <linux/vmalloc.h>
+#include <linux/sched.h>
+#include <linux/genalloc.h>
+#include <linux/sysfs.h>
+#include <linux/kfifo.h>
+#include <linux/dma-mapping.h>
+#include <linux/firmware.h>
+#include <linux/log2.h>
+#include <linux/hwmon.h>
+#include <linux/string.h>
+#include <linux/io.h>
+
+/*
+ * GOYA security scheme:
+ *
+ * 1. Host is protected by:
+ * - Range registers (When MMU is enabled, DMA RR does NOT protect host)
+ * - MMU
+ *
+ * 2. DRAM is protected by:
+ * - Range registers (protect the first 512MB)
+ * - MMU (isolation between users)
+ *
+ * 3. Configuration is protected by:
+ * - Range registers
+ * - Protection bits
+ *
+ * When MMU is disabled:
+ *
+ * QMAN DMA: PQ, CQ, CP, DMA are secured.
+ * PQ, CB and the data are on the host.
+ *
+ * QMAN TPC/MME:
+ * PQ, CQ and CP are not secured.
+ * PQ, CB and the data are on the SRAM/DRAM.
+ *
+ * Since QMAN DMA is secured, KMD is parsing the DMA CB:
+ * - KMD checks DMA pointer
+ * - WREG, MSG_PROT are not allowed.
+ * - MSG_LONG/SHORT are allowed.
+ *
+ * A read/write transaction by the QMAN to a protected area will succeed if
+ * and only if the QMAN's CP is secured and MSG_PROT is used
+ *
+ *
+ * When MMU is enabled:
+ *
+ * QMAN DMA: PQ, CQ and CP are secured.
+ * MMU is set to bypass on the Secure props register of the QMAN.
+ * The reasons we don't enable MMU for PQ, CQ and CP are:
+ * - PQ entry is in kernel address space and KMD doesn't map it.
+ * - CP writes to MSIX register and to kernel address space (completion
+ * queue).
+ *
+ * DMA is not secured but because CP is secured, KMD still needs to parse the
+ * CB, but doesn't need to check the DMA addresses.
+ *
+ * For QMAN DMA 0, DMA is also secured because only KMD uses this DMA and KMD
+ * doesn't map memory in MMU.
+ *
+ * QMAN TPC/MME: PQ, CQ and CP aren't secured (no change from MMU disabled
mode)
+ *
+ * DMA RR does NOT protect host because DMA is not secured
+ *
+ */
+
+#define GOYA_MMU_REGS_NUM 61
+
+#define GOYA_DMA_POOL_BLK_SIZE 0x100 /* 256 bytes */
+
+#define GOYA_RESET_TIMEOUT_MSEC 500 /* 500ms */
+#define GOYA_PLDM_RESET_TIMEOUT_MSEC 20000 /* 20s */
+#define GOYA_RESET_WAIT_MSEC 1 /* 1ms */
+#define GOYA_CPU_RESET_WAIT_MSEC 100 /* 100ms */
+#define GOYA_PLDM_RESET_WAIT_MSEC 1000 /* 1s */
+#define GOYA_CPU_TIMEOUT_USEC 10000000 /* 10s */
+#define GOYA_TEST_QUEUE_WAIT_USEC 100000 /* 100ms */
+
+#define GOYA_QMAN0_FENCE_VAL 0xD169B243
+
+#define GOYA_MAX_INITIATORS 20
+
+static void goya_get_fixed_properties(struct hl_device *hdev)
+{
+ struct asic_fixed_properties *prop = &hdev->asic_prop;
+
+ prop->completion_queues_count = NUMBER_OF_CMPLT_QUEUES;
+
+ prop->dram_base_address = DRAM_PHYS_BASE;
+ prop->dram_size = DRAM_PHYS_DEFAULT_SIZE;
+ prop->dram_end_address = prop->dram_base_address + prop->dram_size;
+ prop->dram_user_base_address = DRAM_BASE_ADDR_USER;
+
+ prop->sram_base_address = SRAM_BASE_ADDR;
+ prop->sram_size = SRAM_SIZE;
+ prop->sram_end_address = prop->sram_base_address + prop->sram_size;
+ prop->sram_user_base_address = prop->sram_base_address +
+ SRAM_USER_BASE_OFFSET;
+
+ prop->host_phys_base_address = HOST_PHYS_BASE;
+ prop->va_space_host_start_address = VA_HOST_SPACE_START;
+ prop->va_space_host_end_address = VA_HOST_SPACE_END;
+ prop->va_space_dram_start_address = VA_DDR_SPACE_START;
+ prop->va_space_dram_end_address = VA_DDR_SPACE_END;
+ prop->cfg_size = CFG_SIZE;
+ prop->max_asid = MAX_ASID;
+ prop->tpc_enabled_mask = TPC_ENABLED_MASK;
+
+ prop->high_pll = PLL_HIGH_DEFAULT;
+}
+
+/*
+ * goya_pci_bars_map - Map PCI BARS of Goya device
+ *
+ * @hdev: pointer to hl_device structure
+ *
+ * Request PCI regions and map them to kernel virtual addresses.
+ * Returns 0 on success
+ *
+ */
+int goya_pci_bars_map(struct hl_device *hdev)
+{
+ struct pci_dev *pdev = hdev->pdev;
+ int rc;
+
+ rc = pci_request_regions(pdev, HL_NAME);
+ if (rc) {
+ dev_err(hdev->dev, "Cannot obtain PCI resources\n");
+ return rc;
+ }
+
+ hdev->pcie_bar[SRAM_CFG_BAR_ID] =
+ pci_ioremap_bar(pdev, SRAM_CFG_BAR_ID);
+ if (!hdev->pcie_bar[SRAM_CFG_BAR_ID]) {
+ dev_err(hdev->dev, "pci_ioremap_bar failed for CFG\n");
+ rc = -ENODEV;
+ goto err_release_regions;
+ }
+
+ hdev->pcie_bar[MSIX_BAR_ID] = pci_ioremap_bar(pdev, MSIX_BAR_ID);
+ if (!hdev->pcie_bar[MSIX_BAR_ID]) {
+ dev_err(hdev->dev, "pci_ioremap_bar failed for MSIX\n");
+ rc = -ENODEV;
+ goto err_unmap_sram_cfg;
+ }
+
+ hdev->pcie_bar[DDR_BAR_ID] = pci_ioremap_wc_bar(pdev, DDR_BAR_ID);
+ if (!hdev->pcie_bar[DDR_BAR_ID]) {
+ dev_err(hdev->dev, "pci_ioremap_bar failed for DDR\n");
+ rc = -ENODEV;
+ goto err_unmap_msix;
+ }
+
+ hdev->rmmio = hdev->pcie_bar[SRAM_CFG_BAR_ID] +
+ (CFG_BASE - SRAM_BASE_ADDR);
+
+ return 0;
+
+err_unmap_msix:
+ iounmap(hdev->pcie_bar[MSIX_BAR_ID]);
+err_unmap_sram_cfg:
+ iounmap(hdev->pcie_bar[SRAM_CFG_BAR_ID]);
+err_release_regions:
+ pci_release_regions(pdev);
+
+ return rc;
+}
+
+/*
+ * goya_pci_bars_unmap - Unmap PCI BARS of Goya device
+ *
+ * @hdev: pointer to hl_device structure
+ *
+ * Release all PCI BARS and unmap their virtual addresses
+ *
+ */
+static void goya_pci_bars_unmap(struct hl_device *hdev)
+{
+ struct pci_dev *pdev = hdev->pdev;
+
+ iounmap(hdev->pcie_bar[DDR_BAR_ID]);
+ iounmap(hdev->pcie_bar[MSIX_BAR_ID]);
+ iounmap(hdev->pcie_bar[SRAM_CFG_BAR_ID]);
+ pci_release_regions(pdev);
+}
+
+/*
+ * goya_elbi_write - Write through the ELBI interface
+ *
+ * @hdev: pointer to hl_device structure
+ *
+ * return 0 on success, -1 on failure
+ *
+ */
+static int goya_elbi_write(struct hl_device *hdev, u64 addr, u32 data)
+{
+ struct pci_dev *pdev = hdev->pdev;
+ ktime_t timeout;
+ u32 val;
+
+ /* Clear previous status */
+ pci_write_config_dword(pdev, mmPCI_CONFIG_ELBI_STS, 0);
+
+ pci_write_config_dword(pdev, mmPCI_CONFIG_ELBI_ADDR, (u32) addr);
+ pci_write_config_dword(pdev, mmPCI_CONFIG_ELBI_DATA, data);
+ pci_write_config_dword(pdev, mmPCI_CONFIG_ELBI_CTRL,
+ PCI_CONFIG_ELBI_CTRL_WRITE);
+
+ timeout = ktime_add_ms(ktime_get(), 10);
+ for (;;) {
+ pci_read_config_dword(pdev, mmPCI_CONFIG_ELBI_STS, &val);
+ if (val & PCI_CONFIG_ELBI_STS_MASK)
+ break;
+ if (ktime_compare(ktime_get(), timeout) > 0) {
+ pci_read_config_dword(pdev, mmPCI_CONFIG_ELBI_STS,
+ &val);
+ break;
+ }
+ usleep_range(300, 500);
+ }
+
+ if ((val & PCI_CONFIG_ELBI_STS_MASK) == PCI_CONFIG_ELBI_STS_DONE)
+ return 0;
+
+ if (val & PCI_CONFIG_ELBI_STS_ERR) {
+ dev_err(hdev->dev, "Error writing to ELBI\n");
+ return -EIO;
+ }
+
+ if (!(val & PCI_CONFIG_ELBI_STS_MASK)) {
+ dev_err(hdev->dev, "ELBI write didn't finish in time\n");
+ return -EIO;
+ }
+
+ dev_err(hdev->dev, "ELBI write has undefined bits in status\n");
+ return -EIO;
+}
+
+/*
+ * goya_iatu_write - iatu write routine
+ *
+ * @hdev: pointer to hl_device structure
+ *
+ */
+static int goya_iatu_write(struct hl_device *hdev, u32 addr, u32 data)
+{
+ u32 dbi_offset;
+ int rc;
+
+ dbi_offset = addr & 0xFFF;
+
+ rc = goya_elbi_write(hdev, CFG_BASE + mmPCIE_AUX_DBI, 0x00300000);
+ rc |= goya_elbi_write(hdev, mmPCIE_DBI_BASE + dbi_offset, data);
+
+ if (rc)
+ return -EIO;
+
+ return 0;
+}
+
+void goya_reset_link_through_bridge(struct hl_device *hdev)
+{
+ struct pci_dev *pdev = hdev->pdev;
+ struct pci_dev *parent_port;
+ u16 val;
+
+ parent_port = pdev->bus->self;
+ pci_read_config_word(parent_port, PCI_BRIDGE_CONTROL, &val);
+ val |= PCI_BRIDGE_CTL_BUS_RESET;
+ pci_write_config_word(parent_port, PCI_BRIDGE_CONTROL, val);
+ ssleep(1);
+
+ val &= ~(PCI_BRIDGE_CTL_BUS_RESET);
+ pci_write_config_word(parent_port, PCI_BRIDGE_CONTROL, val);
+ ssleep(3);
+}
+
+/*
+ * goya_set_ddr_bar_base - set DDR bar to map specific device address
+ *
+ * @hdev: pointer to hl_device structure
+ * @addr: address in DDR. Must be aligned to DDR bar size
+ *
+ * This function configures the iATU so that the DDR bar will start at the
+ * specified addr.
+ *
+ */
+static int goya_set_ddr_bar_base(struct hl_device *hdev, u64 addr)
+{
+ struct goya_device *goya = hdev->asic_specific;
+ int rc;
+
+ if ((goya) && (goya->ddr_bar_cur_addr == addr))
+ return 0;
+
+ /* Inbound Region 1 - Bar 4 - Point to DDR */
+ rc = goya_iatu_write(hdev, 0x314, lower_32_bits(addr));
+ rc |= goya_iatu_write(hdev, 0x318, upper_32_bits(addr));
+ rc |= goya_iatu_write(hdev, 0x300, 0);
+ /* Enable + Bar match + match enable + Bar 4 */
+ rc |= goya_iatu_write(hdev, 0x304, 0xC0080400);
+
+ /* Return the DBI window to the default location */
+ rc |= goya_elbi_write(hdev, CFG_BASE + mmPCIE_AUX_DBI, 0);
+ rc |= goya_elbi_write(hdev, CFG_BASE + mmPCIE_AUX_DBI_32, 0);
+
+ if (rc) {
+ dev_err(hdev->dev, "failed to map DDR bar to 0x%08llx\n", addr);
+ return -EIO;
+ }
+
+ if (goya)
+ goya->ddr_bar_cur_addr = addr;
+
+ return 0;
+}
+
+/*
+ * goya_init_iatu - Initialize the iATU unit inside the PCI controller
+ *
+ * @hdev: pointer to hl_device structure
+ *
+ * This is needed in case the firmware doesn't initialize the iATU
+ *
+ */
+static int goya_init_iatu(struct hl_device *hdev)
+{
+ int rc;
+
+ /* Inbound Region 0 - Bar 0 - Point to SRAM_BASE_ADDR */
+ rc = goya_iatu_write(hdev, 0x114, lower_32_bits(SRAM_BASE_ADDR));
+ rc |= goya_iatu_write(hdev, 0x118, upper_32_bits(SRAM_BASE_ADDR));
+ rc |= goya_iatu_write(hdev, 0x100, 0);
+ /* Enable + Bar match + match enable */
+ rc |= goya_iatu_write(hdev, 0x104, 0xC0080000);
+
+ /* Inbound Region 1 - Bar 4 - Point to DDR */
+ rc |= goya_set_ddr_bar_base(hdev, DRAM_PHYS_BASE);
+
+ /* Outbound Region 0 - Point to Host */
+ rc |= goya_iatu_write(hdev, 0x008, lower_32_bits(HOST_PHYS_BASE));
+ rc |= goya_iatu_write(hdev, 0x00C, upper_32_bits(HOST_PHYS_BASE));
+ rc |= goya_iatu_write(hdev, 0x010,
+ lower_32_bits(HOST_PHYS_BASE + HOST_PHYS_SIZE - 1));
+ rc |= goya_iatu_write(hdev, 0x014, 0);
+ rc |= goya_iatu_write(hdev, 0x018, 0);
+ rc |= goya_iatu_write(hdev, 0x020,
+ upper_32_bits(HOST_PHYS_BASE + HOST_PHYS_SIZE - 1));
+ /* Increase region size */
+ rc |= goya_iatu_write(hdev, 0x000, 0x00002000);
+ /* Enable */
+ rc |= goya_iatu_write(hdev, 0x004, 0x80000000);
+
+ /* Return the DBI window to the default location */
+ rc |= goya_elbi_write(hdev, CFG_BASE + mmPCIE_AUX_DBI, 0);
+ rc |= goya_elbi_write(hdev, CFG_BASE + mmPCIE_AUX_DBI_32, 0);
+
+ if (rc)
+ return -EIO;
+
+ return 0;
+}
+
+/*
+ * goya_early_init - GOYA early initialization code
+ *
+ * @hdev: pointer to hl_device structure
+ *
+ * Verify PCI bars
+ * Set DMA masks
+ * PCI controller initialization
+ * Map PCI bars
+ *
+ */
+static int goya_early_init(struct hl_device *hdev)
+{
+ struct asic_fixed_properties *prop = &hdev->asic_prop;
+ struct pci_dev *pdev = hdev->pdev;
+ u32 val;
+ int rc;
+
+ goya_get_fixed_properties(hdev);
+
+ /* Check BAR sizes */
+ if (pci_resource_len(pdev, SRAM_CFG_BAR_ID) != CFG_BAR_SIZE) {
+ dev_err(hdev->dev,
+ "Not " HL_NAME "? BAR %d size %llu, expecting %llu\n",
+ SRAM_CFG_BAR_ID,
+ pci_resource_len(pdev, SRAM_CFG_BAR_ID),
+ CFG_BAR_SIZE);
+ return -ENODEV;
+ }
+
+ if (pci_resource_len(pdev, MSIX_BAR_ID) != MSIX_BAR_SIZE) {
+ dev_err(hdev->dev,
+ "Not " HL_NAME "? BAR %d size %llu, expecting %llu\n",
+ MSIX_BAR_ID, pci_resource_len(pdev, MSIX_BAR_ID),
+ MSIX_BAR_SIZE);
+ return -ENODEV;
+ }
+
+ prop->dram_pci_bar_size = pci_resource_len(pdev, DDR_BAR_ID);
+
+ /* set DMA mask for GOYA */
+ rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(39));
+ if (rc) {
+ dev_warn(hdev->dev, "Unable to set pci dma mask to 39 bits\n");
+ rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
+ if (rc) {
+ dev_err(hdev->dev,
+ "Unable to set pci dma mask to 32 bits\n");
+ return rc;
+ }
+ }
+
+ rc = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(39));
+ if (rc) {
+ dev_warn(hdev->dev,
+ "Unable to set pci consistent dma mask to 39 bits\n");
+ rc = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
+ if (rc) {
+ dev_err(hdev->dev,
+ "Unable to set pci consistent dma mask to 32
bits\n");
+ return rc;
+ }
+ }
+
+ if (hdev->reset_pcilink)
+ goya_reset_link_through_bridge(hdev);
+
+ rc = pci_enable_device_mem(pdev);
+ if (rc) {
+ dev_err(hdev->dev, "can't enable PCI device\n");
+ return rc;
+ }
+
+ pci_set_master(pdev);
+
+ rc = goya_init_iatu(hdev);
+ if (rc) {
+ dev_err(hdev->dev, "Failed to initialize iATU\n");
+ goto disable_device;
+ }
+
+ rc = goya_pci_bars_map(hdev);
+ if (rc) {
+ dev_err(hdev->dev, "Failed to initialize PCI BARS\n");
+ goto disable_device;
+ }
+
+ val = RREG32(mmPSOC_GLOBAL_CONF_BOOT_STRAP_PINS);
+ if (val & PSOC_GLOBAL_CONF_BOOT_STRAP_PINS_SRIOV_EN_MASK)
+ dev_warn(hdev->dev,
+ "PCI strap is not configured correctly, PCI bus errors
may occur\n");
+
+ return 0;
+
+disable_device:
+ pci_clear_master(pdev);
+ pci_disable_device(pdev);
+
+ return rc;
+}
+
+/*
+ * goya_early_fini - GOYA early finalization code
+ *
+ * @hdev: pointer to hl_device structure
+ *
+ * Unmap PCI bars
+ *
+ */
+int goya_early_fini(struct hl_device *hdev)
+{
+ goya_pci_bars_unmap(hdev);
+
+ pci_clear_master(hdev->pdev);
+ pci_disable_device(hdev->pdev);
+
+ return 0;
+}
+
+/*
+ * goya_sw_init - Goya software initialization code
+ *
+ * @hdev: pointer to hl_device structure
+ *
+ */
+static int goya_sw_init(struct hl_device *hdev)
+{
+ struct goya_device *goya;
+ int rc;
+
+ /* Allocate device structure */
+ goya = kzalloc(sizeof(*goya), GFP_KERNEL);
+ if (!goya)
+ return -ENOMEM;
+
+ /* according to goya_init_iatu */
+ goya->ddr_bar_cur_addr = DRAM_PHYS_BASE;
+ hdev->asic_specific = goya;
+
+ /* Create DMA pool for small allocations */
+ hdev->dma_pool = dma_pool_create(dev_name(hdev->dev),
+ &hdev->pdev->dev, GOYA_DMA_POOL_BLK_SIZE, 8, 0);
+ if (!hdev->dma_pool) {
+ dev_err(hdev->dev, "failed to create DMA pool\n");
+ rc = -ENOMEM;
+ goto free_goya_device;
+ }
+
+ hdev->cpu_accessible_dma_mem =
+ hdev->asic_funcs->dma_alloc_coherent(hdev,
+ CPU_ACCESSIBLE_MEM_SIZE,
+ &hdev->cpu_accessible_dma_address,
+ GFP_KERNEL | __GFP_ZERO);
+
+ if (!hdev->cpu_accessible_dma_mem) {
+ dev_err(hdev->dev,
+ "failed to allocate %d of dma memory for CPU accessible
memory space\n",
+ CPU_ACCESSIBLE_MEM_SIZE);
+ rc = -ENOMEM;
+ goto free_dma_pool;
+ }
+
+ hdev->cpu_accessible_dma_pool = gen_pool_create(CPU_PKT_SHIFT, -1);
+ if (!hdev->cpu_accessible_dma_pool) {
+ dev_err(hdev->dev,
+ "Failed to create CPU accessible DMA pool\n");
+ rc = -ENOMEM;
+ goto free_cpu_pq_dma_mem;
+ }
+
+ rc = gen_pool_add(hdev->cpu_accessible_dma_pool,
+ (u64) hdev->cpu_accessible_dma_mem,
+ CPU_ACCESSIBLE_MEM_SIZE, -1);
+ if (rc) {
+ dev_err(hdev->dev,
+ "Failed to add memory to CPU accessible DMA pool\n");
+ rc = -EFAULT;
+ goto free_cpu_pq_pool;
+ }
+
+ spin_lock_init(&goya->hw_queues_lock);
+
+ return 0;
+
+free_cpu_pq_pool:
+ gen_pool_destroy(hdev->cpu_accessible_dma_pool);
+free_cpu_pq_dma_mem:
+ hdev->asic_funcs->dma_free_coherent(hdev, CPU_ACCESSIBLE_MEM_SIZE,
+ hdev->cpu_accessible_dma_mem,
+ hdev->cpu_accessible_dma_address);
+free_dma_pool:
+ dma_pool_destroy(hdev->dma_pool);
+free_goya_device:
+ kfree(goya);
+
+ return rc;
+}
+
+/*
+ * goya_sw_fini - Goya software tear-down code
+ *
+ * @hdev: pointer to hl_device structure
+ *
+ */
+int goya_sw_fini(struct hl_device *hdev)
+{
+ struct goya_device *goya = hdev->asic_specific;
+
+ gen_pool_destroy(hdev->cpu_accessible_dma_pool);
+
+ hdev->asic_funcs->dma_free_coherent(hdev, CPU_ACCESSIBLE_MEM_SIZE,
+ hdev->cpu_accessible_dma_mem,
+ hdev->cpu_accessible_dma_address);
+
+ dma_pool_destroy(hdev->dma_pool);
+
+ kfree(goya);
+
+ return 0;
+}
+
+int goya_suspend(struct hl_device *hdev)
+{
+ return 0;
+}
+
+int goya_resume(struct hl_device *hdev)
+{
+ return 0;
+}
+
+void *goya_dma_alloc_coherent(struct hl_device *hdev, size_t size,
+ dma_addr_t *dma_handle, gfp_t flags)
+{
+ return dma_alloc_coherent(&hdev->pdev->dev, size, dma_handle, flags);
+}
+
+void goya_dma_free_coherent(struct hl_device *hdev, size_t size, void
*cpu_addr,
+ dma_addr_t dma_handle)
+{
+ dma_free_coherent(&hdev->pdev->dev, size, cpu_addr, dma_handle);
+}
+
+static const struct hl_asic_funcs goya_funcs = {
+ .early_init = goya_early_init,
+ .early_fini = goya_early_fini,
+ .sw_init = goya_sw_init,
+ .sw_fini = goya_sw_fini,
+ .suspend = goya_suspend,
+ .resume = goya_resume,
+ .dma_alloc_coherent = goya_dma_alloc_coherent,
+ .dma_free_coherent = goya_dma_free_coherent,
+};
+
+/*
+ * goya_set_asic_funcs - set Goya function pointers
+ *
+ * @*hdev: pointer to hl_device structure
+ *
+ */
+void goya_set_asic_funcs(struct hl_device *hdev)
+{
+ hdev->asic_funcs = &goya_funcs;
+}
diff --git a/drivers/misc/habanalabs/goya/goyaP.h
b/drivers/misc/habanalabs/goya/goyaP.h
new file mode 100644
index 000000000000..d65ac54ba89b
--- /dev/null
+++ b/drivers/misc/habanalabs/goya/goyaP.h
@@ -0,0 +1,155 @@
+/* SPDX-License-Identifier: GPL-2.0
+ *
+ * Copyright 2016-2018 HabanaLabs, Ltd.
+ * All Rights Reserved.
+ *
+ */
+
+#ifndef GOYAP_H_
+#define GOYAP_H_
+
+#include <uapi/misc/habanalabs.h>
+#include "habanalabs.h"
+#include "include/goya/goya.h"
+
+#define NUMBER_OF_CMPLT_QUEUES 5
+#define NUMBER_OF_EXT_HW_QUEUES 5
+#define NUMBER_OF_CPU_HW_QUEUES 1
+#define NUMBER_OF_INT_HW_QUEUES 9
+#define NUMBER_OF_HW_QUEUES (NUMBER_OF_EXT_HW_QUEUES + \
+ NUMBER_OF_CPU_HW_QUEUES + \
+ NUMBER_OF_INT_HW_QUEUES)
+
+/*
+ * Number of MSIX interrupts IDS:
+ * Each completion queue has 1 ID
+ * The event queue has 1 ID
+ */
+#define NUMBER_OF_INTERRUPTS (NUMBER_OF_CMPLT_QUEUES + 1)
+
+#if (NUMBER_OF_HW_QUEUES >= HL_MAX_QUEUES)
+#error "Number of H/W queues must be smaller than HL_MAX_QUEUES"
+#endif
+
+#if (NUMBER_OF_INTERRUPTS > GOYA_MSIX_ENTRIES)
+#error "Number of MSIX interrupts must be smaller or equal to
GOYA_MSIX_ENTRIES"
+#endif
+
+#define QMAN_FENCE_TIMEOUT_USEC 10000 /* 10 ms */
+
+#define QMAN_STOP_TIMEOUT_USEC 100000 /* 100 ms */
+
+#define TPC_MAX_NUM 8
+#define TPC_ENABLED_MASK 0xFF
+
+#define DMA_MAX_NUM 5
+
+#define PLL_HIGH_DEFAULT 1575000000 /* 1.575 GHz */
+
+#define GOYA_ARMCP_INFO_TIMEOUT 10000000 /* 10s */
+
+#define DRAM_PHYS_DEFAULT_SIZE 0x100000000ull /* 4GB */
+
+/* DRAM Memory Map */
+
+#define CPU_FW_IMAGE_SIZE 0x10000000 /* 256MB */
+#define MMU_PAGE_TABLES_SIZE 0x0E000000 /* 224MB */
+#define MMU_CACHE_MNG_SIZE 0x00001000 /* 4KB */
+#define CPU_PQ_PKT_SIZE 0x00001000 /* 4KB */
+#define CPU_PQ_DATA_SIZE 0x01FFE000 /* 32MB - 8KB */
+
+#define CPU_FW_IMAGE_ADDR DRAM_PHYS_BASE
+#define MMU_PAGE_TABLES_ADDR (CPU_FW_IMAGE_ADDR + CPU_FW_IMAGE_SIZE)
+#define MMU_CACHE_MNG_ADDR (MMU_PAGE_TABLES_ADDR + MMU_PAGE_TABLES_SIZE)
+#define CPU_PQ_PKT_ADDR (MMU_CACHE_MNG_ADDR +
MMU_CACHE_MNG_SIZE)
+#define CPU_PQ_DATA_ADDR (CPU_PQ_PKT_ADDR + CPU_PQ_PKT_SIZE)
+#define DRAM_BASE_ADDR_USER (CPU_PQ_DATA_ADDR + CPU_PQ_DATA_SIZE)
+
+#if (DRAM_BASE_ADDR_USER != 0x20000000)
+#error "KMD must reserve 512MB"
+#endif
+
+/*
+ * SRAM Memory Map for KMD
+ *
+ * KMD occupies KMD_SRAM_SIZE bytes from the start of SRAM. It is used for
+ * MME/TPC QMANs
+ *
+ */
+
+#define MME_QMAN_BASE_OFFSET 0x000000 /* Must be 0 */
+#define MME_QMAN_LENGTH 64
+#define TPC_QMAN_LENGTH 64
+
+#define TPC0_QMAN_BASE_OFFSET (MME_QMAN_BASE_OFFSET + \
+ (MME_QMAN_LENGTH * QMAN_PQ_ENTRY_SIZE))
+#define TPC1_QMAN_BASE_OFFSET (TPC0_QMAN_BASE_OFFSET + \
+ (TPC_QMAN_LENGTH * QMAN_PQ_ENTRY_SIZE))
+#define TPC2_QMAN_BASE_OFFSET (TPC1_QMAN_BASE_OFFSET + \
+ (TPC_QMAN_LENGTH * QMAN_PQ_ENTRY_SIZE))
+#define TPC3_QMAN_BASE_OFFSET (TPC2_QMAN_BASE_OFFSET + \
+ (TPC_QMAN_LENGTH * QMAN_PQ_ENTRY_SIZE))
+#define TPC4_QMAN_BASE_OFFSET (TPC3_QMAN_BASE_OFFSET + \
+ (TPC_QMAN_LENGTH * QMAN_PQ_ENTRY_SIZE))
+#define TPC5_QMAN_BASE_OFFSET (TPC4_QMAN_BASE_OFFSET + \
+ (TPC_QMAN_LENGTH * QMAN_PQ_ENTRY_SIZE))
+#define TPC6_QMAN_BASE_OFFSET (TPC5_QMAN_BASE_OFFSET + \
+ (TPC_QMAN_LENGTH * QMAN_PQ_ENTRY_SIZE))
+#define TPC7_QMAN_BASE_OFFSET (TPC6_QMAN_BASE_OFFSET + \
+ (TPC_QMAN_LENGTH * QMAN_PQ_ENTRY_SIZE))
+
+#define SRAM_KMD_RES_OFFSET (TPC7_QMAN_BASE_OFFSET + \
+ (TPC_QMAN_LENGTH * QMAN_PQ_ENTRY_SIZE))
+
+#if (SRAM_KMD_RES_OFFSET >= GOYA_KMD_SRAM_RESERVED_SIZE_FROM_START)
+#error "MME/TPC QMANs SRAM space exceeds limit"
+#endif
+
+#define SRAM_USER_BASE_OFFSET GOYA_KMD_SRAM_RESERVED_SIZE_FROM_START
+
+/* Virtual address space */
+#define VA_HOST_SPACE_START 0x1000000000000ull /* 256TB */
+#define VA_HOST_SPACE_END 0x3FF8000000000ull /* 1PB - 1TB */
+#define VA_HOST_SPACE_SIZE (VA_HOST_SPACE_END - \
+ VA_HOST_SPACE_START) /* 767TB */
+
+#define VA_DDR_SPACE_START 0x800000000ull /* 32GB */
+#define VA_DDR_SPACE_END 0x2000000000ull /* 128GB */
+#define VA_DDR_SPACE_SIZE (VA_DDR_SPACE_END - \
+ VA_DDR_SPACE_START) /* 128GB */
+
+#define DMA_MAX_TRANSFER_SIZE 0xFFFFFFFF
+
+#define HW_CAP_PLL 0x00000001
+#define HW_CAP_DDR_0 0x00000002
+#define HW_CAP_DDR_1 0x00000004
+#define HW_CAP_MME 0x00000008
+#define HW_CAP_CPU 0x00000010
+#define HW_CAP_DMA 0x00000020
+#define HW_CAP_MSIX 0x00000040
+#define HW_CAP_CPU_Q 0x00000080
+#define HW_CAP_MMU 0x00000100
+#define HW_CAP_TPC_MBIST 0x00000200
+#define HW_CAP_GOLDEN 0x00000400
+#define HW_CAP_TPC 0x00000800
+
+#define CPU_PKT_SHIFT 5
+#define CPU_PKT_SIZE (1 << CPU_PKT_SHIFT)
+#define CPU_PKT_MASK (~((1 << CPU_PKT_SHIFT) - 1))
+#define CPU_MAX_PKTS_IN_CB 32
+#define CPU_CB_SIZE (CPU_PKT_SIZE * CPU_MAX_PKTS_IN_CB)
+#define CPU_ACCESSIBLE_MEM_SIZE (HL_QUEUE_LENGTH * CPU_CB_SIZE)
+
+enum goya_fw_component {
+ FW_COMP_UBOOT,
+ FW_COMP_PREBOOT
+};
+
+struct goya_device {
+ /* TODO: remove hw_queues_lock after moving to scheduler code */
+ spinlock_t hw_queues_lock;
+ u64 ddr_bar_cur_addr;
+ u32 hw_cap_initialized;
+};
+
+#endif /* GOYAP_H_ */
diff --git a/drivers/misc/habanalabs/habanalabs.h
b/drivers/misc/habanalabs/habanalabs.h
index 02386dcaa3a3..644624fa378b 100644
--- a/drivers/misc/habanalabs/habanalabs.h
+++ b/drivers/misc/habanalabs/habanalabs.h
@@ -21,9 +21,62 @@
#define HL_NAME "habanalabs"
+#define HL_MAX_QUEUES 128
+
struct hl_device;
+/**
+ * struct asic_fixed_properties - ASIC specific immutable properties.
+ * @sram_base_address: SRAM physical start address.
+ * @sram_end_address: SRAM physical end address.
+ * @sram_user_base_address - SRAM physical start address for user access.
+ * @dram_base_address: DRAM physical start address.
+ * @dram_end_address: DRAM physical end address.
+ * @dram_user_base_address: DRAM physical start address for user access.
+ * @dram_size: DRAM total size.
+ * @dram_pci_bar_size: size of PCI bar towards DRAM.
+ * @host_phys_base_address: base physical address of host memory for
+ * transactions that the device generates.
+ * @va_space_host_start_address: base address of virtual memory range for
+ * mapping host memory.
+ * @va_space_host_end_address: end address of virtual memory range for
+ * mapping host memory.
+ * @va_space_dram_start_address: base address of virtual memory range for
+ * mapping DRAM memory.
+ * @va_space_dram_end_address: end address of virtual memory range for
+ * mapping DRAM memory.
+ * @cfg_size: configuration space size on SRAM.
+ * @sram_size: total size of SRAM.
+ * @max_asid: maximum number of open contexts (ASIDs).
+ * @completion_queues_count: number of completion queues.
+ * @high_pll: high PLL frequency used by the device.
+ * @tpc_enabled_mask: which TPCs are enabled.
+ */
+struct asic_fixed_properties {
+ u64 sram_base_address;
+ u64 sram_end_address;
+ u64 sram_user_base_address;
+ u64 dram_base_address;
+ u64 dram_end_address;
+ u64 dram_user_base_address;
+ u64 dram_size;
+ u64 dram_pci_bar_size;
+ u64 host_phys_base_address;
+ u64 va_space_host_start_address;
+ u64 va_space_host_end_address;
+ u64 va_space_dram_start_address;
+ u64 va_space_dram_end_address;
+ u32 cfg_size;
+ u32 sram_size;
+ u32 max_asid;
+ u32 high_pll;
+ u8 completion_queues_count;
+ u8 tpc_enabled_mask;
+};
+
+
+#define HL_QUEUE_LENGTH 256
/*
* ASICs
*/
@@ -40,6 +93,36 @@ enum hl_asic_type {
ASIC_INVALID
};
+/**
+ * struct hl_asic_funcs - ASIC specific functions that are can be called from
+ * common code.
+ * @early_init: sets up early driver state (pre sw_init), doesn't configure
H/W.
+ * @early_fini: tears down what was done in early_init.
+ * @sw_init: sets up driver state, does not configure H/W.
+ * @sw_fini: tears down driver state, does not configure H/W.
+ * @suspend: handles IP specific H/W or SW changes for suspend.
+ * @resume: handles IP specific H/W or SW changes for resume.
+ * @dma_alloc_coherent: Allocate coherent DMA memory by calling
+ * dma_alloc_coherent(). This is ASIC function because its
+ * implementation is not trivial when the driver is loaded
+ * in simulation mode (not upstreamed).
+ * @dma_free_coherent: Free coherent DMA memory by calling dma_free_coherent().
+ * This is ASIC function because its implementation is not
+ * trivial when the driver is loaded in simulation mode
+ * (not upstreamed).
+ */
+struct hl_asic_funcs {
+ int (*early_init)(struct hl_device *hdev);
+ int (*early_fini)(struct hl_device *hdev);
+ int (*sw_init)(struct hl_device *hdev);
+ int (*sw_fini)(struct hl_device *hdev);
+ int (*suspend)(struct hl_device *hdev);
+ int (*resume)(struct hl_device *hdev);
+ void* (*dma_alloc_coherent)(struct hl_device *hdev, size_t size,
+ dma_addr_t *dma_handle, gfp_t flag);
+ void (*dma_free_coherent)(struct hl_device *hdev, size_t size,
+ void *cpu_addr, dma_addr_t dma_handle);
+};
/*
* FILE PRIVATE STRUCTURE
@@ -69,26 +152,78 @@ struct hl_fpriv {
*/
#define HL_MAX_MINORS 256
+/*
+ * Registers read & write functions.
+ */
+
+u32 hl_rreg(struct hl_device *hdev, u32 reg);
+void hl_wreg(struct hl_device *hdev, u32 reg, u32 val);
+
+#define hl_poll_timeout(hdev, addr, val, cond, sleep_us, timeout_us) \
+ readl_poll_timeout(hdev->rmmio + addr, val, cond, sleep_us, timeout_us)
+
+#define RREG32(reg) hl_rreg(hdev, (reg))
+#define WREG32(reg, v) hl_wreg(hdev, (reg), (v))
+#define DREG32(reg) pr_info("REGISTER: " #reg " : 0x%08X\n", \
+ hl_rreg(hdev, (reg)))
+
+#define WREG32_P(reg, val, mask) \
+ do { \
+ u32 tmp_ = RREG32(reg); \
+ tmp_ &= (mask); \
+ tmp_ |= ((val) & ~(mask)); \
+ WREG32(reg, tmp_); \
+ } while (0)
+#define WREG32_AND(reg, and) WREG32_P(reg, 0, and)
+#define WREG32_OR(reg, or) WREG32_P(reg, or, ~(or))
+
+#define REG_FIELD_SHIFT(reg, field) reg##_##field##_SHIFT
+#define REG_FIELD_MASK(reg, field) reg##_##field##_MASK
+#define WREG32_FIELD(reg, field, val) \
+ WREG32(mm##reg, (RREG32(mm##reg) & ~REG_FIELD_MASK(reg, field)) | \
+ (val) << REG_FIELD_SHIFT(reg, field))
+
/**
* struct hl_device - habanalabs device structure.
* @pdev: pointer to PCI device, can be NULL in case of simulator device.
+ * @pcie_bar: array of available PCIe bars.
+ * @rmmio: configuration area address on SRAM.
* @cdev: related char device.
* @dev: realted kernel basic device structure.
* @asic_name: ASIC specific nmae.
* @asic_type: ASIC specific type.
+ * @dma_pool: DMA pool for small allocations.
+ * @cpu_accessible_dma_mem: KMD <-> ArmCP shared memory CPU address.
+ * @cpu_accessible_dma_address: KMD <-> ArmCP shared memory DMA address.
+ * @cpu_accessible_dma_pool: KMD <-> ArmCP shared memory pool.
+ * @asic_prop: ASIC specific immutable properties.
+ * @asic_funcs: ASIC specific functions.
+ * @asic_specific: ASIC specific information to use only from ASIC files.
* @major: habanalabs KMD major.
* @id: device minor.
* @disabled: is device disabled.
*/
struct hl_device {
struct pci_dev *pdev;
+ void __iomem *pcie_bar[6];
+ void __iomem *rmmio;
struct cdev cdev;
struct device *dev;
char asic_name[16];
enum hl_asic_type asic_type;
+ struct dma_pool *dma_pool;
+ void *cpu_accessible_dma_mem;
+ dma_addr_t cpu_accessible_dma_address;
+ struct gen_pool *cpu_accessible_dma_pool;
+ struct asic_fixed_properties asic_prop;
+ const struct hl_asic_funcs *asic_funcs;
+ void *asic_specific;
u32 major;
u16 id;
u8 disabled;
+
+ /* Parameters for bring-up */
+ u8 reset_pcilink;
};
@@ -135,4 +270,6 @@ void hl_device_fini(struct hl_device *hdev);
int hl_device_suspend(struct hl_device *hdev);
int hl_device_resume(struct hl_device *hdev);
+void goya_set_asic_funcs(struct hl_device *hdev);
+
#endif /* HABANALABSP_H_ */
diff --git a/drivers/misc/habanalabs/habanalabs_drv.c
b/drivers/misc/habanalabs/habanalabs_drv.c
index 573349eedce4..1596cf38f6c0 100644
--- a/drivers/misc/habanalabs/habanalabs_drv.c
+++ b/drivers/misc/habanalabs/habanalabs_drv.c
@@ -126,6 +126,9 @@ int create_hdev(struct hl_device **dev, struct pci_dev
*pdev,
hdev->major = hl_major;
+ /* Parameters for bring-up - set them to defaults */
+ hdev->reset_pcilink = 0;
+
hdev->disabled = true;
hdev->pdev = pdev; /* can be NULL in case of simulator device */
diff --git a/drivers/misc/habanalabs/include/goya/goya.h
b/drivers/misc/habanalabs/include/goya/goya.h
new file mode 100644
index 000000000000..76d8a9c376e2
--- /dev/null
+++ b/drivers/misc/habanalabs/include/goya/goya.h
@@ -0,0 +1,41 @@
+/* SPDX-License-Identifier: GPL-2.0
+ *
+ * Copyright 2016-2018 HabanaLabs, Ltd.
+ * All Rights Reserved.
+ *
+ */
+
+#ifndef GOYA_H
+#define GOYA_H
+
+#include "asic_reg/goya_regs.h"
+
+#include <linux/types.h>
+
+#define SRAM_CFG_BAR_ID 0
+#define MSIX_BAR_ID 2
+#define DDR_BAR_ID 4
+
+#define CFG_BAR_SIZE 0x10000000ull /* 256MB */
+#define MSIX_BAR_SIZE 0x1000ull /* 4KB */
+
+#define CFG_BASE 0x7FFC000000ull
+#define CFG_SIZE 0x4000000 /* 32MB CFG + 32MB DBG*/
+
+#define SRAM_BASE_ADDR 0x7FF0000000ull
+#define SRAM_SIZE 0x32A0000 /* 50.625MB */
+
+#define DRAM_PHYS_BASE 0x0ull
+
+#define HOST_PHYS_BASE 0x8000000000ull /* 0.5TB */
+#define HOST_PHYS_SIZE 0x1000000000000ull /* 0.25PB (48 bits) */
+
+#define GOYA_MSIX_ENTRIES 8
+
+#define QMAN_PQ_ENTRY_SIZE 16 /* Bytes */
+
+#define MAX_ASID 1024
+
+#define PROT_BITS_OFFS 0xF80
+
+#endif /* GOYA_H */
diff --git a/include/uapi/misc/habanalabs.h b/include/uapi/misc/habanalabs.h
new file mode 100644
index 000000000000..a0ec23adf8f5
--- /dev/null
+++ b/include/uapi/misc/habanalabs.h
@@ -0,0 +1,20 @@
+/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note
+ *
+ * Copyright 2016-2018 HabanaLabs, Ltd.
+ * All Rights Reserved.
+ *
+ */
+
+#ifndef HABANALABS_H_
+#define HABANALABS_H_
+
+#include <linux/types.h>
+#include <linux/ioctl.h>
+
+/*
+ * Defines that are asic-specific but constitutes as ABI between kernel driver
+ * and userspace
+ */
+#define GOYA_KMD_SRAM_RESERVED_SIZE_FROM_START 0x8000 /* 32KB */
+
+#endif /* HABANALABS_H_ */
--
2.17.1
