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path: root/drivers/misc/habanalabs/firmware_if.c
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Diffstat (limited to 'drivers/misc/habanalabs/firmware_if.c')
-rw-r--r--drivers/misc/habanalabs/firmware_if.c322
1 files changed, 322 insertions, 0 deletions
diff --git a/drivers/misc/habanalabs/firmware_if.c b/drivers/misc/habanalabs/firmware_if.c
new file mode 100644
index 000000000000..eda5d7fcb79f
--- /dev/null
+++ b/drivers/misc/habanalabs/firmware_if.c
@@ -0,0 +1,322 @@
+// SPDX-License-Identifier: GPL-2.0
+
+/*
+ * Copyright 2016-2019 HabanaLabs, Ltd.
+ * All Rights Reserved.
+ */
+
+#include "habanalabs.h"
+
+#include <linux/firmware.h>
+#include <linux/genalloc.h>
+#include <linux/io-64-nonatomic-lo-hi.h>
+
+/**
+ * hl_fw_push_fw_to_device() - Push FW code to device.
+ * @hdev: pointer to hl_device structure.
+ *
+ * Copy fw code from firmware file to device memory.
+ *
+ * Return: 0 on success, non-zero for failure.
+ */
+int hl_fw_push_fw_to_device(struct hl_device *hdev, const char *fw_name,
+ void __iomem *dst)
+{
+ const struct firmware *fw;
+ const u64 *fw_data;
+ size_t fw_size, i;
+ int rc;
+
+ rc = request_firmware(&fw, fw_name, hdev->dev);
+ if (rc) {
+ dev_err(hdev->dev, "Failed to request %s\n", fw_name);
+ goto out;
+ }
+
+ fw_size = fw->size;
+ if ((fw_size % 4) != 0) {
+ dev_err(hdev->dev, "illegal %s firmware size %zu\n",
+ fw_name, fw_size);
+ rc = -EINVAL;
+ goto out;
+ }
+
+ dev_dbg(hdev->dev, "%s firmware size == %zu\n", fw_name, fw_size);
+
+ fw_data = (const u64 *) fw->data;
+
+ if ((fw->size % 8) != 0)
+ fw_size -= 8;
+
+ for (i = 0 ; i < fw_size ; i += 8, fw_data++, dst += 8) {
+ if (!(i & (0x80000 - 1))) {
+ dev_dbg(hdev->dev,
+ "copied so far %zu out of %zu for %s firmware",
+ i, fw_size, fw_name);
+ usleep_range(20, 100);
+ }
+
+ writeq(*fw_data, dst);
+ }
+
+ if ((fw->size % 8) != 0)
+ writel(*(const u32 *) fw_data, dst);
+
+out:
+ release_firmware(fw);
+ return rc;
+}
+
+int hl_fw_send_pci_access_msg(struct hl_device *hdev, u32 opcode)
+{
+ struct armcp_packet pkt = {};
+
+ pkt.ctl = cpu_to_le32(opcode << ARMCP_PKT_CTL_OPCODE_SHIFT);
+
+ return hdev->asic_funcs->send_cpu_message(hdev, (u32 *) &pkt,
+ sizeof(pkt), HL_DEVICE_TIMEOUT_USEC, NULL);
+}
+
+int hl_fw_send_cpu_message(struct hl_device *hdev, u32 hw_queue_id, u32 *msg,
+ u16 len, u32 timeout, long *result)
+{
+ struct armcp_packet *pkt;
+ dma_addr_t pkt_dma_addr;
+ u32 tmp;
+ int rc = 0;
+
+ if (len > HL_CPU_CB_SIZE) {
+ dev_err(hdev->dev, "Invalid CPU message size of %d bytes\n",
+ len);
+ return -ENOMEM;
+ }
+
+ pkt = hdev->asic_funcs->cpu_accessible_dma_pool_alloc(hdev, len,
+ &pkt_dma_addr);
+ if (!pkt) {
+ dev_err(hdev->dev,
+ "Failed to allocate DMA memory for packet to CPU\n");
+ return -ENOMEM;
+ }
+
+ memcpy(pkt, msg, len);
+
+ mutex_lock(&hdev->send_cpu_message_lock);
+
+ if (hdev->disabled)
+ goto out;
+
+ if (hdev->device_cpu_disabled) {
+ rc = -EIO;
+ goto out;
+ }
+
+ rc = hl_hw_queue_send_cb_no_cmpl(hdev, hw_queue_id, len, pkt_dma_addr);
+ if (rc) {
+ dev_err(hdev->dev, "Failed to send CB on CPU PQ (%d)\n", rc);
+ goto out;
+ }
+
+ rc = hl_poll_timeout_memory(hdev, (u64) (uintptr_t) &pkt->fence,
+ timeout, &tmp);
+
+ hl_hw_queue_inc_ci_kernel(hdev, hw_queue_id);
+
+ if (rc == -ETIMEDOUT) {
+ dev_err(hdev->dev, "Timeout while waiting for device CPU\n");
+ hdev->device_cpu_disabled = true;
+ goto out;
+ }
+
+ if (tmp == ARMCP_PACKET_FENCE_VAL) {
+ u32 ctl = le32_to_cpu(pkt->ctl);
+
+ rc = (ctl & ARMCP_PKT_CTL_RC_MASK) >> ARMCP_PKT_CTL_RC_SHIFT;
+ if (rc) {
+ dev_err(hdev->dev,
+ "F/W ERROR %d for CPU packet %d\n",
+ rc, (ctl & ARMCP_PKT_CTL_OPCODE_MASK)
+ >> ARMCP_PKT_CTL_OPCODE_SHIFT);
+ rc = -EINVAL;
+ } else if (result) {
+ *result = (long) le64_to_cpu(pkt->result);
+ }
+ } else {
+ dev_err(hdev->dev, "CPU packet wrong fence value\n");
+ rc = -EINVAL;
+ }
+
+out:
+ mutex_unlock(&hdev->send_cpu_message_lock);
+
+ hdev->asic_funcs->cpu_accessible_dma_pool_free(hdev, len, pkt);
+
+ return rc;
+}
+
+int hl_fw_test_cpu_queue(struct hl_device *hdev)
+{
+ struct armcp_packet test_pkt = {};
+ long result;
+ int rc;
+
+ test_pkt.ctl = cpu_to_le32(ARMCP_PACKET_TEST <<
+ ARMCP_PKT_CTL_OPCODE_SHIFT);
+ test_pkt.value = cpu_to_le64(ARMCP_PACKET_FENCE_VAL);
+
+ rc = hdev->asic_funcs->send_cpu_message(hdev, (u32 *) &test_pkt,
+ sizeof(test_pkt), HL_DEVICE_TIMEOUT_USEC, &result);
+
+ if (!rc) {
+ if (result == ARMCP_PACKET_FENCE_VAL)
+ dev_info(hdev->dev,
+ "queue test on CPU queue succeeded\n");
+ else
+ dev_err(hdev->dev,
+ "CPU queue test failed (0x%08lX)\n", result);
+ } else {
+ dev_err(hdev->dev, "CPU queue test failed, error %d\n", rc);
+ }
+
+ return rc;
+}
+
+void *hl_fw_cpu_accessible_dma_pool_alloc(struct hl_device *hdev, size_t size,
+ dma_addr_t *dma_handle)
+{
+ u64 kernel_addr;
+
+ /* roundup to HL_CPU_PKT_SIZE */
+ size = (size + (HL_CPU_PKT_SIZE - 1)) & HL_CPU_PKT_MASK;
+
+ kernel_addr = gen_pool_alloc(hdev->cpu_accessible_dma_pool, size);
+
+ *dma_handle = hdev->cpu_accessible_dma_address +
+ (kernel_addr - (u64) (uintptr_t) hdev->cpu_accessible_dma_mem);
+
+ return (void *) (uintptr_t) kernel_addr;
+}
+
+void hl_fw_cpu_accessible_dma_pool_free(struct hl_device *hdev, size_t size,
+ void *vaddr)
+{
+ /* roundup to HL_CPU_PKT_SIZE */
+ size = (size + (HL_CPU_PKT_SIZE - 1)) & HL_CPU_PKT_MASK;
+
+ gen_pool_free(hdev->cpu_accessible_dma_pool, (u64) (uintptr_t) vaddr,
+ size);
+}
+
+int hl_fw_send_heartbeat(struct hl_device *hdev)
+{
+ struct armcp_packet hb_pkt = {};
+ long result;
+ int rc;
+
+ hb_pkt.ctl = cpu_to_le32(ARMCP_PACKET_TEST <<
+ ARMCP_PKT_CTL_OPCODE_SHIFT);
+ hb_pkt.value = cpu_to_le64(ARMCP_PACKET_FENCE_VAL);
+
+ rc = hdev->asic_funcs->send_cpu_message(hdev, (u32 *) &hb_pkt,
+ sizeof(hb_pkt), HL_DEVICE_TIMEOUT_USEC, &result);
+
+ if ((rc) || (result != ARMCP_PACKET_FENCE_VAL))
+ rc = -EIO;
+
+ return rc;
+}
+
+int hl_fw_armcp_info_get(struct hl_device *hdev)
+{
+ struct asic_fixed_properties *prop = &hdev->asic_prop;
+ struct armcp_packet pkt = {};
+ void *armcp_info_cpu_addr;
+ dma_addr_t armcp_info_dma_addr;
+ long result;
+ int rc;
+
+ armcp_info_cpu_addr =
+ hdev->asic_funcs->cpu_accessible_dma_pool_alloc(hdev,
+ sizeof(struct armcp_info),
+ &armcp_info_dma_addr);
+ if (!armcp_info_cpu_addr) {
+ dev_err(hdev->dev,
+ "Failed to allocate DMA memory for ArmCP info packet\n");
+ return -ENOMEM;
+ }
+
+ memset(armcp_info_cpu_addr, 0, sizeof(struct armcp_info));
+
+ pkt.ctl = cpu_to_le32(ARMCP_PACKET_INFO_GET <<
+ ARMCP_PKT_CTL_OPCODE_SHIFT);
+ pkt.addr = cpu_to_le64(armcp_info_dma_addr);
+ pkt.data_max_size = cpu_to_le32(sizeof(struct armcp_info));
+
+ rc = hdev->asic_funcs->send_cpu_message(hdev, (u32 *) &pkt, sizeof(pkt),
+ HL_ARMCP_INFO_TIMEOUT_USEC, &result);
+ if (rc) {
+ dev_err(hdev->dev,
+ "Failed to send armcp info pkt, error %d\n", rc);
+ goto out;
+ }
+
+ memcpy(&prop->armcp_info, armcp_info_cpu_addr,
+ sizeof(prop->armcp_info));
+
+ rc = hl_build_hwmon_channel_info(hdev, prop->armcp_info.sensors);
+ if (rc) {
+ dev_err(hdev->dev,
+ "Failed to build hwmon channel info, error %d\n", rc);
+ rc = -EFAULT;
+ goto out;
+ }
+
+out:
+ hdev->asic_funcs->cpu_accessible_dma_pool_free(hdev,
+ sizeof(struct armcp_info), armcp_info_cpu_addr);
+
+ return rc;
+}
+
+int hl_fw_get_eeprom_data(struct hl_device *hdev, void *data, size_t max_size)
+{
+ struct armcp_packet pkt = {};
+ void *eeprom_info_cpu_addr;
+ dma_addr_t eeprom_info_dma_addr;
+ long result;
+ int rc;
+
+ eeprom_info_cpu_addr =
+ hdev->asic_funcs->cpu_accessible_dma_pool_alloc(hdev,
+ max_size, &eeprom_info_dma_addr);
+ if (!eeprom_info_cpu_addr) {
+ dev_err(hdev->dev,
+ "Failed to allocate DMA memory for EEPROM info packet\n");
+ return -ENOMEM;
+ }
+
+ memset(eeprom_info_cpu_addr, 0, max_size);
+
+ pkt.ctl = cpu_to_le32(ARMCP_PACKET_EEPROM_DATA_GET <<
+ ARMCP_PKT_CTL_OPCODE_SHIFT);
+ pkt.addr = cpu_to_le64(eeprom_info_dma_addr);
+ pkt.data_max_size = cpu_to_le32(max_size);
+
+ rc = hdev->asic_funcs->send_cpu_message(hdev, (u32 *) &pkt, sizeof(pkt),
+ HL_ARMCP_EEPROM_TIMEOUT_USEC, &result);
+
+ if (rc) {
+ dev_err(hdev->dev,
+ "Failed to send armcp EEPROM pkt, error %d\n", rc);
+ goto out;
+ }
+
+ /* result contains the actual size */
+ memcpy(data, eeprom_info_cpu_addr, min((size_t)result, max_size));
+
+out:
+ hdev->asic_funcs->cpu_accessible_dma_pool_free(hdev, max_size,
+ eeprom_info_cpu_addr);
+
+ return rc;
+}