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-rw-r--r--drivers/misc/habanalabs/goya/goya.c60
-rw-r--r--drivers/misc/habanalabs/habanalabs.h5
-rw-r--r--drivers/misc/habanalabs/pci.c5
3 files changed, 35 insertions, 35 deletions
diff --git a/drivers/misc/habanalabs/goya/goya.c b/drivers/misc/habanalabs/goya/goya.c
index 8ee3b00b0fab..04e4ed8a0be6 100644
--- a/drivers/misc/habanalabs/goya/goya.c
+++ b/drivers/misc/habanalabs/goya/goya.c
@@ -389,33 +389,26 @@ static int goya_pci_bars_map(struct hl_device *hdev)
return 0;
}
-/*
- * 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)
+static u64 goya_set_ddr_bar_base(struct hl_device *hdev, u64 addr)
{
struct goya_device *goya = hdev->asic_specific;
+ u64 old_addr = addr;
int rc;
if ((goya) && (goya->ddr_bar_cur_addr == addr))
- return 0;
+ return old_addr;
/* Inbound Region 1 - Bar 4 - Point to DDR */
rc = hl_pci_set_dram_bar_base(hdev, 1, 4, addr);
if (rc)
- return rc;
+ return U64_MAX;
- if (goya)
+ if (goya) {
+ old_addr = goya->ddr_bar_cur_addr;
goya->ddr_bar_cur_addr = addr;
+ }
- return 0;
+ return old_addr;
}
/*
@@ -2215,11 +2208,10 @@ static int goya_init_cpu(struct hl_device *hdev, u32 cpu_timeout)
* Before pushing u-boot/linux to device, need to set the ddr bar to
* base address of dram
*/
- rc = goya_set_ddr_bar_base(hdev, DRAM_PHYS_BASE);
- if (rc) {
+ if (goya_set_ddr_bar_base(hdev, DRAM_PHYS_BASE) == U64_MAX) {
dev_err(hdev->dev,
"failed to map DDR bar to DRAM base address\n");
- return rc;
+ return -EIO;
}
if (hdev->pldm) {
@@ -2454,12 +2446,12 @@ static int goya_hw_init(struct hl_device *hdev)
* After CPU initialization is finished, change DDR bar mapping inside
* iATU to point to the start address of the MMU page tables
*/
- rc = goya_set_ddr_bar_base(hdev, DRAM_PHYS_BASE +
- (MMU_PAGE_TABLES_ADDR & ~(prop->dram_pci_bar_size - 0x1ull)));
- if (rc) {
+ if (goya_set_ddr_bar_base(hdev, DRAM_PHYS_BASE +
+ (MMU_PAGE_TABLES_ADDR &
+ ~(prop->dram_pci_bar_size - 0x1ull))) == U64_MAX) {
dev_err(hdev->dev,
"failed to map DDR bar to MMU page tables\n");
- return rc;
+ return -EIO;
}
rc = goya_mmu_init(hdev);
@@ -3958,6 +3950,7 @@ void goya_restore_phase_topology(struct hl_device *hdev)
static int goya_debugfs_read32(struct hl_device *hdev, u64 addr, u32 *val)
{
struct asic_fixed_properties *prop = &hdev->asic_prop;
+ u64 ddr_bar_addr;
int rc = 0;
if ((addr >= CFG_BASE) && (addr < CFG_BASE + CFG_SIZE)) {
@@ -3975,15 +3968,16 @@ static int goya_debugfs_read32(struct hl_device *hdev, u64 addr, u32 *val)
u64 bar_base_addr = DRAM_PHYS_BASE +
(addr & ~(prop->dram_pci_bar_size - 0x1ull));
- rc = goya_set_ddr_bar_base(hdev, bar_base_addr);
- if (!rc) {
+ ddr_bar_addr = goya_set_ddr_bar_base(hdev, bar_base_addr);
+ if (ddr_bar_addr != U64_MAX) {
*val = readl(hdev->pcie_bar[DDR_BAR_ID] +
(addr - bar_base_addr));
- rc = goya_set_ddr_bar_base(hdev, DRAM_PHYS_BASE +
- (MMU_PAGE_TABLES_ADDR &
- ~(prop->dram_pci_bar_size - 0x1ull)));
+ ddr_bar_addr = goya_set_ddr_bar_base(hdev,
+ ddr_bar_addr);
}
+ if (ddr_bar_addr == U64_MAX)
+ rc = -EIO;
} else {
rc = -EFAULT;
}
@@ -4008,6 +4002,7 @@ static int goya_debugfs_read32(struct hl_device *hdev, u64 addr, u32 *val)
static int goya_debugfs_write32(struct hl_device *hdev, u64 addr, u32 val)
{
struct asic_fixed_properties *prop = &hdev->asic_prop;
+ u64 ddr_bar_addr;
int rc = 0;
if ((addr >= CFG_BASE) && (addr < CFG_BASE + CFG_SIZE)) {
@@ -4025,15 +4020,16 @@ static int goya_debugfs_write32(struct hl_device *hdev, u64 addr, u32 val)
u64 bar_base_addr = DRAM_PHYS_BASE +
(addr & ~(prop->dram_pci_bar_size - 0x1ull));
- rc = goya_set_ddr_bar_base(hdev, bar_base_addr);
- if (!rc) {
+ ddr_bar_addr = goya_set_ddr_bar_base(hdev, bar_base_addr);
+ if (ddr_bar_addr != U64_MAX) {
writel(val, hdev->pcie_bar[DDR_BAR_ID] +
(addr - bar_base_addr));
- rc = goya_set_ddr_bar_base(hdev, DRAM_PHYS_BASE +
- (MMU_PAGE_TABLES_ADDR &
- ~(prop->dram_pci_bar_size - 0x1ull)));
+ ddr_bar_addr = goya_set_ddr_bar_base(hdev,
+ ddr_bar_addr);
}
+ if (ddr_bar_addr == U64_MAX)
+ rc = -EIO;
} else {
rc = -EFAULT;
}
diff --git a/drivers/misc/habanalabs/habanalabs.h b/drivers/misc/habanalabs/habanalabs.h
index a624d1e1e1e5..65717e4055da 100644
--- a/drivers/misc/habanalabs/habanalabs.h
+++ b/drivers/misc/habanalabs/habanalabs.h
@@ -487,7 +487,8 @@ enum hl_pll_frequency {
* @send_cpu_message: send buffer to ArmCP.
* @get_hw_state: retrieve the H/W state
* @pci_bars_map: Map PCI BARs.
- * @set_dram_bar_base: Set DRAM BAR to map specific device address.
+ * @set_dram_bar_base: Set DRAM BAR to map specific device address. Returns
+ * old address the bar pointed to or U64_MAX for failure
* @init_iatu: Initialize the iATU unit inside the PCI controller.
* @rreg: Read a register. Needed for simulator support.
* @wreg: Write a register. Needed for simulator support.
@@ -564,7 +565,7 @@ struct hl_asic_funcs {
u16 len, u32 timeout, long *result);
enum hl_device_hw_state (*get_hw_state)(struct hl_device *hdev);
int (*pci_bars_map)(struct hl_device *hdev);
- int (*set_dram_bar_base)(struct hl_device *hdev, u64 addr);
+ u64 (*set_dram_bar_base)(struct hl_device *hdev, u64 addr);
int (*init_iatu)(struct hl_device *hdev);
u32 (*rreg)(struct hl_device *hdev, u32 reg);
void (*wreg)(struct hl_device *hdev, u32 reg, u32 val);
diff --git a/drivers/misc/habanalabs/pci.c b/drivers/misc/habanalabs/pci.c
index d472d02a8e6e..5278f086d65d 100644
--- a/drivers/misc/habanalabs/pci.c
+++ b/drivers/misc/habanalabs/pci.c
@@ -259,7 +259,10 @@ int hl_pci_init_iatu(struct hl_device *hdev, u64 sram_base_address,
/* Point to DRAM */
if (!hdev->asic_funcs->set_dram_bar_base)
return -EINVAL;
- rc |= hdev->asic_funcs->set_dram_bar_base(hdev, dram_base_address);
+ if (hdev->asic_funcs->set_dram_bar_base(hdev, dram_base_address) ==
+ U64_MAX)
+ return -EIO;
+
/* Outbound Region 0 - Point to Host */
host_phys_end_addr = prop->host_phys_base_address + host_phys_size - 1;
generated by cgit v1.2.3 (git 2.39.1) at 2024-09-16 06:26:56 +0000