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path: root/drivers/accel/qaic/qaic_drv.c
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Diffstat (limited to 'drivers/accel/qaic/qaic_drv.c')
-rw-r--r--drivers/accel/qaic/qaic_drv.c97
1 files changed, 67 insertions, 30 deletions
diff --git a/drivers/accel/qaic/qaic_drv.c b/drivers/accel/qaic/qaic_drv.c
index 81819b9ef8d4..3b415e2c9431 100644
--- a/drivers/accel/qaic/qaic_drv.c
+++ b/drivers/accel/qaic/qaic_drv.c
@@ -34,13 +34,46 @@
MODULE_IMPORT_NS("DMA_BUF");
-#define PCI_DEV_AIC080 0xa080
-#define PCI_DEV_AIC100 0xa100
+#define PCI_DEVICE_ID_QCOM_AIC080 0xa080
+#define PCI_DEVICE_ID_QCOM_AIC100 0xa100
+#define PCI_DEVICE_ID_QCOM_AIC200 0xa110
#define QAIC_NAME "qaic"
#define QAIC_DESC "Qualcomm Cloud AI Accelerators"
#define CNTL_MAJOR 5
#define CNTL_MINOR 0
+struct qaic_device_config {
+ /* Indicates the AIC family the device belongs to */
+ int family;
+ /* A bitmask representing the available BARs */
+ int bar_mask;
+ /* An index value used to identify the MHI controller BAR */
+ unsigned int mhi_bar_idx;
+ /* An index value used to identify the DBCs BAR */
+ unsigned int dbc_bar_idx;
+};
+
+static const struct qaic_device_config aic080_config = {
+ .family = FAMILY_AIC100,
+ .bar_mask = BIT(0) | BIT(2) | BIT(4),
+ .mhi_bar_idx = 0,
+ .dbc_bar_idx = 2,
+};
+
+static const struct qaic_device_config aic100_config = {
+ .family = FAMILY_AIC100,
+ .bar_mask = BIT(0) | BIT(2) | BIT(4),
+ .mhi_bar_idx = 0,
+ .dbc_bar_idx = 2,
+};
+
+static const struct qaic_device_config aic200_config = {
+ .family = FAMILY_AIC200,
+ .bar_mask = BIT(0) | BIT(1) | BIT(2) | BIT(4),
+ .mhi_bar_idx = 1,
+ .dbc_bar_idx = 2,
+};
+
bool datapath_polling;
module_param(datapath_polling, bool, 0400);
MODULE_PARM_DESC(datapath_polling, "Operate the datapath in polling mode");
@@ -352,7 +385,8 @@ void qaic_dev_reset_clean_local_state(struct qaic_device *qdev)
release_dbc(qdev, i);
}
-static struct qaic_device *create_qdev(struct pci_dev *pdev, const struct pci_device_id *id)
+static struct qaic_device *create_qdev(struct pci_dev *pdev,
+ const struct qaic_device_config *config)
{
struct device *dev = &pdev->dev;
struct qaic_drm_device *qddev;
@@ -365,12 +399,10 @@ static struct qaic_device *create_qdev(struct pci_dev *pdev, const struct pci_de
return NULL;
qdev->dev_state = QAIC_OFFLINE;
- if (id->device == PCI_DEV_AIC080 || id->device == PCI_DEV_AIC100) {
- qdev->num_dbc = 16;
- qdev->dbc = devm_kcalloc(dev, qdev->num_dbc, sizeof(*qdev->dbc), GFP_KERNEL);
- if (!qdev->dbc)
- return NULL;
- }
+ qdev->num_dbc = 16;
+ qdev->dbc = devm_kcalloc(dev, qdev->num_dbc, sizeof(*qdev->dbc), GFP_KERNEL);
+ if (!qdev->dbc)
+ return NULL;
qddev = devm_drm_dev_alloc(&pdev->dev, &qaic_accel_driver, struct qaic_drm_device, drm);
if (IS_ERR(qddev))
@@ -426,17 +458,18 @@ static struct qaic_device *create_qdev(struct pci_dev *pdev, const struct pci_de
return qdev;
}
-static int init_pci(struct qaic_device *qdev, struct pci_dev *pdev)
+static int init_pci(struct qaic_device *qdev, struct pci_dev *pdev,
+ const struct qaic_device_config *config)
{
int bars;
int ret;
- bars = pci_select_bars(pdev, IORESOURCE_MEM);
+ bars = pci_select_bars(pdev, IORESOURCE_MEM) & 0x3f;
/* make sure the device has the expected BARs */
- if (bars != (BIT(0) | BIT(2) | BIT(4))) {
- pci_dbg(pdev, "%s: expected BARs 0, 2, and 4 not found in device. Found 0x%x\n",
- __func__, bars);
+ if (bars != config->bar_mask) {
+ pci_dbg(pdev, "%s: expected BARs %#x not found in device. Found %#x\n",
+ __func__, config->bar_mask, bars);
return -EINVAL;
}
@@ -449,13 +482,13 @@ static int init_pci(struct qaic_device *qdev, struct pci_dev *pdev)
return ret;
dma_set_max_seg_size(&pdev->dev, UINT_MAX);
- qdev->bar_0 = devm_ioremap_resource(&pdev->dev, &pdev->resource[0]);
- if (IS_ERR(qdev->bar_0))
- return PTR_ERR(qdev->bar_0);
+ qdev->bar_mhi = devm_ioremap_resource(&pdev->dev, &pdev->resource[config->mhi_bar_idx]);
+ if (IS_ERR(qdev->bar_mhi))
+ return PTR_ERR(qdev->bar_mhi);
- qdev->bar_2 = devm_ioremap_resource(&pdev->dev, &pdev->resource[2]);
- if (IS_ERR(qdev->bar_2))
- return PTR_ERR(qdev->bar_2);
+ qdev->bar_dbc = devm_ioremap_resource(&pdev->dev, &pdev->resource[config->dbc_bar_idx]);
+ if (IS_ERR(qdev->bar_dbc))
+ return PTR_ERR(qdev->bar_dbc);
/* Managed release since we use pcim_enable_device above */
pci_set_master(pdev);
@@ -465,14 +498,15 @@ static int init_pci(struct qaic_device *qdev, struct pci_dev *pdev)
static int init_msi(struct qaic_device *qdev, struct pci_dev *pdev)
{
+ int irq_count = qdev->num_dbc + 1;
int mhi_irq;
int ret;
int i;
/* Managed release since we use pcim_enable_device */
- ret = pci_alloc_irq_vectors(pdev, 32, 32, PCI_IRQ_MSI);
+ ret = pci_alloc_irq_vectors(pdev, irq_count, irq_count, PCI_IRQ_MSI | PCI_IRQ_MSIX);
if (ret == -ENOSPC) {
- ret = pci_alloc_irq_vectors(pdev, 1, 1, PCI_IRQ_MSI);
+ ret = pci_alloc_irq_vectors(pdev, 1, 1, PCI_IRQ_MSI | PCI_IRQ_MSIX);
if (ret < 0)
return ret;
@@ -485,7 +519,8 @@ static int init_msi(struct qaic_device *qdev, struct pci_dev *pdev)
* interrupted, it shouldn't race with itself.
*/
qdev->single_msi = true;
- pci_info(pdev, "Allocating 32 MSIs failed, operating in 1 MSI mode. Performance may be impacted.\n");
+ pci_info(pdev, "Allocating %d MSIs failed, operating in 1 MSI mode. Performance may be impacted.\n",
+ irq_count);
} else if (ret < 0) {
return ret;
}
@@ -515,21 +550,22 @@ static int init_msi(struct qaic_device *qdev, struct pci_dev *pdev)
static int qaic_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
{
+ struct qaic_device_config *config = (struct qaic_device_config *)id->driver_data;
struct qaic_device *qdev;
int mhi_irq;
int ret;
int i;
- qdev = create_qdev(pdev, id);
+ qdev = create_qdev(pdev, config);
if (!qdev)
return -ENOMEM;
- ret = init_pci(qdev, pdev);
+ ret = init_pci(qdev, pdev, config);
if (ret)
return ret;
for (i = 0; i < qdev->num_dbc; ++i)
- qdev->dbc[i].dbc_base = qdev->bar_2 + QAIC_DBC_OFF(i);
+ qdev->dbc[i].dbc_base = qdev->bar_dbc + QAIC_DBC_OFF(i);
mhi_irq = init_msi(qdev, pdev);
if (mhi_irq < 0)
@@ -539,8 +575,8 @@ static int qaic_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
if (ret)
return ret;
- qdev->mhi_cntrl = qaic_mhi_register_controller(pdev, qdev->bar_0, mhi_irq,
- qdev->single_msi);
+ qdev->mhi_cntrl = qaic_mhi_register_controller(pdev, qdev->bar_mhi, mhi_irq,
+ qdev->single_msi, config->family);
if (IS_ERR(qdev->mhi_cntrl)) {
ret = PTR_ERR(qdev->mhi_cntrl);
qaic_destroy_drm_device(qdev, QAIC_NO_PARTITION);
@@ -607,8 +643,9 @@ static struct mhi_driver qaic_mhi_driver = {
};
static const struct pci_device_id qaic_ids[] = {
- { PCI_DEVICE(PCI_VENDOR_ID_QCOM, PCI_DEV_AIC080), },
- { PCI_DEVICE(PCI_VENDOR_ID_QCOM, PCI_DEV_AIC100), },
+ { PCI_DEVICE_DATA(QCOM, AIC080, (kernel_ulong_t)&aic080_config), },
+ { PCI_DEVICE_DATA(QCOM, AIC100, (kernel_ulong_t)&aic100_config), },
+ { PCI_DEVICE_DATA(QCOM, AIC200, (kernel_ulong_t)&aic200_config), },
{ }
};
MODULE_DEVICE_TABLE(pci, qaic_ids);
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.