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-rw-r--r--drivers/net/ethernet/pensando/ionic/ionic.h3
-rw-r--r--drivers/net/ethernet/pensando/ionic/ionic_bus.h2
-rw-r--r--drivers/net/ethernet/pensando/ionic/ionic_bus_pci.c12
-rw-r--r--drivers/net/ethernet/pensando/ionic/ionic_dev.c6
-rw-r--r--drivers/net/ethernet/pensando/ionic/ionic_dev.h22
-rw-r--r--drivers/net/ethernet/pensando/ionic/ionic_lif.c39
-rw-r--r--drivers/net/ethernet/pensando/ionic/ionic_lif.h4
-rw-r--r--drivers/net/ethernet/pensando/ionic/ionic_regs.h3
8 files changed, 91 insertions, 0 deletions
diff --git a/drivers/net/ethernet/pensando/ionic/ionic.h b/drivers/net/ethernet/pensando/ionic/ionic.h
index 723b2ba6874e..affd7a88b58b 100644
--- a/drivers/net/ethernet/pensando/ionic/ionic.h
+++ b/drivers/net/ethernet/pensando/ionic/ionic.h
@@ -4,6 +4,8 @@
#ifndef _IONIC_H_
#define _IONIC_H_
+struct ionic_lif;
+
#include "ionic_if.h"
#include "ionic_dev.h"
#include "ionic_devlink.h"
@@ -39,6 +41,7 @@ struct ionic {
unsigned int nrxqs_per_lif;
DECLARE_BITMAP(lifbits, IONIC_LIFS_MAX);
unsigned int nintrs;
+ DECLARE_BITMAP(intrs, IONIC_INTR_CTRL_REGS_MAX);
};
int ionic_dev_cmd_wait(struct ionic *ionic, unsigned long max_wait);
diff --git a/drivers/net/ethernet/pensando/ionic/ionic_bus.h b/drivers/net/ethernet/pensando/ionic/ionic_bus.h
index 3b1e2d0ebf8f..6b29e94f81d6 100644
--- a/drivers/net/ethernet/pensando/ionic/ionic_bus.h
+++ b/drivers/net/ethernet/pensando/ionic/ionic_bus.h
@@ -9,5 +9,7 @@ int ionic_bus_alloc_irq_vectors(struct ionic *ionic, unsigned int nintrs);
void ionic_bus_free_irq_vectors(struct ionic *ionic);
int ionic_bus_register_driver(void);
void ionic_bus_unregister_driver(void);
+void __iomem *ionic_bus_map_dbpage(struct ionic *ionic, int page_num);
+void ionic_bus_unmap_dbpage(struct ionic *ionic, void __iomem *page);
#endif /* _IONIC_BUS_H_ */
diff --git a/drivers/net/ethernet/pensando/ionic/ionic_bus_pci.c b/drivers/net/ethernet/pensando/ionic/ionic_bus_pci.c
index f0e0daee45bc..4f08d915c3d2 100644
--- a/drivers/net/ethernet/pensando/ionic/ionic_bus_pci.c
+++ b/drivers/net/ethernet/pensando/ionic/ionic_bus_pci.c
@@ -87,6 +87,18 @@ static void ionic_unmap_bars(struct ionic *ionic)
}
}
+void __iomem *ionic_bus_map_dbpage(struct ionic *ionic, int page_num)
+{
+ return pci_iomap_range(ionic->pdev,
+ ionic->bars[IONIC_PCI_BAR_DBELL].res_index,
+ (u64)page_num << PAGE_SHIFT, PAGE_SIZE);
+}
+
+void ionic_bus_unmap_dbpage(struct ionic *ionic, void __iomem *page)
+{
+ iounmap(page);
+}
+
static int ionic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
{
struct device *dev = &pdev->dev;
diff --git a/drivers/net/ethernet/pensando/ionic/ionic_dev.c b/drivers/net/ethernet/pensando/ionic/ionic_dev.c
index 01e922fa9366..dbdde548848e 100644
--- a/drivers/net/ethernet/pensando/ionic/ionic_dev.c
+++ b/drivers/net/ethernet/pensando/ionic/ionic_dev.c
@@ -9,6 +9,7 @@
#include <linux/etherdevice.h>
#include "ionic.h"
#include "ionic_dev.h"
+#include "ionic_lif.h"
void ionic_init_devinfo(struct ionic *ionic)
{
@@ -260,3 +261,8 @@ void ionic_dev_cmd_lif_reset(struct ionic_dev *idev, u16 lif_index)
ionic_dev_cmd_go(idev, &cmd);
}
+
+int ionic_db_page_num(struct ionic_lif *lif, int pid)
+{
+ return (lif->hw_index * lif->dbid_count) + pid;
+}
diff --git a/drivers/net/ethernet/pensando/ionic/ionic_dev.h b/drivers/net/ethernet/pensando/ionic/ionic_dev.h
index e8d4fc888333..2252fa9ad0e3 100644
--- a/drivers/net/ethernet/pensando/ionic/ionic_dev.h
+++ b/drivers/net/ethernet/pensando/ionic/ionic_dev.h
@@ -126,8 +126,28 @@ struct ionic_dev {
struct ionic_devinfo dev_info;
};
+#define INTR_INDEX_NOT_ASSIGNED -1
+#define INTR_NAME_MAX_SZ 32
+
+struct ionic_intr_info {
+ char name[INTR_NAME_MAX_SZ];
+ unsigned int index;
+ unsigned int vector;
+ u64 rearm_count;
+ unsigned int cpu;
+ cpumask_t affinity_mask;
+};
+
struct ionic;
+static inline void ionic_intr_init(struct ionic_dev *idev,
+ struct ionic_intr_info *intr,
+ unsigned long index)
+{
+ ionic_intr_clean(idev->intr_ctrl, index);
+ intr->index = index;
+}
+
void ionic_init_devinfo(struct ionic *ionic);
int ionic_dev_setup(struct ionic *ionic);
void ionic_dev_teardown(struct ionic *ionic);
@@ -155,4 +175,6 @@ void ionic_dev_cmd_lif_init(struct ionic_dev *idev, u16 lif_index,
dma_addr_t addr);
void ionic_dev_cmd_lif_reset(struct ionic_dev *idev, u16 lif_index);
+int ionic_db_page_num(struct ionic_lif *lif, int pid);
+
#endif /* _IONIC_DEV_H_ */
diff --git a/drivers/net/ethernet/pensando/ionic/ionic_lif.c b/drivers/net/ethernet/pensando/ionic/ionic_lif.c
index 5528043095d8..e9dc97b968b5 100644
--- a/drivers/net/ethernet/pensando/ionic/ionic_lif.c
+++ b/drivers/net/ethernet/pensando/ionic/ionic_lif.c
@@ -94,6 +94,12 @@ static void ionic_lif_free(struct ionic_lif *lif)
lif->info = NULL;
lif->info_pa = 0;
+ /* unmap doorbell page */
+ ionic_bus_unmap_dbpage(lif->ionic, lif->kern_dbpage);
+ lif->kern_dbpage = NULL;
+ kfree(lif->dbid_inuse);
+ lif->dbid_inuse = NULL;
+
/* free netdev & lif */
ionic_debugfs_del_lif(lif);
list_del(&lif->list);
@@ -136,7 +142,9 @@ void ionic_lifs_deinit(struct ionic *ionic)
static int ionic_lif_init(struct ionic_lif *lif)
{
struct ionic_dev *idev = &lif->ionic->idev;
+ struct device *dev = lif->ionic->dev;
struct ionic_lif_init_comp comp;
+ int dbpage_num;
int err;
ionic_debugfs_add_lif(lif);
@@ -151,9 +159,40 @@ static int ionic_lif_init(struct ionic_lif *lif)
lif->hw_index = le16_to_cpu(comp.hw_index);
+ /* now that we have the hw_index we can figure out our doorbell page */
+ lif->dbid_count = le32_to_cpu(lif->ionic->ident.dev.ndbpgs_per_lif);
+ if (!lif->dbid_count) {
+ dev_err(dev, "No doorbell pages, aborting\n");
+ return -EINVAL;
+ }
+
+ lif->dbid_inuse = bitmap_alloc(lif->dbid_count, GFP_KERNEL);
+ if (!lif->dbid_inuse) {
+ dev_err(dev, "Failed alloc doorbell id bitmap, aborting\n");
+ return -ENOMEM;
+ }
+
+ /* first doorbell id reserved for kernel (dbid aka pid == zero) */
+ set_bit(0, lif->dbid_inuse);
+ lif->kern_pid = 0;
+
+ dbpage_num = ionic_db_page_num(lif, lif->kern_pid);
+ lif->kern_dbpage = ionic_bus_map_dbpage(lif->ionic, dbpage_num);
+ if (!lif->kern_dbpage) {
+ dev_err(dev, "Cannot map dbpage, aborting\n");
+ err = -ENOMEM;
+ goto err_out_free_dbid;
+ }
+
set_bit(IONIC_LIF_INITED, lif->state);
return 0;
+
+err_out_free_dbid:
+ kfree(lif->dbid_inuse);
+ lif->dbid_inuse = NULL;
+
+ return err;
}
int ionic_lifs_init(struct ionic *ionic)
diff --git a/drivers/net/ethernet/pensando/ionic/ionic_lif.h b/drivers/net/ethernet/pensando/ionic/ionic_lif.h
index fff4fc287b89..ec8d06ad4192 100644
--- a/drivers/net/ethernet/pensando/ionic/ionic_lif.h
+++ b/drivers/net/ethernet/pensando/ionic/ionic_lif.h
@@ -23,6 +23,8 @@ struct ionic_lif {
bool registered;
unsigned int index;
unsigned int hw_index;
+ unsigned int kern_pid;
+ u64 __iomem *kern_dbpage;
unsigned int neqs;
unsigned int nxqs;
@@ -30,6 +32,8 @@ struct ionic_lif {
dma_addr_t info_pa;
u32 info_sz;
+ unsigned long *dbid_inuse;
+ unsigned int dbid_count;
struct dentry *dentry;
u32 flags;
};
diff --git a/drivers/net/ethernet/pensando/ionic/ionic_regs.h b/drivers/net/ethernet/pensando/ionic/ionic_regs.h
index 3523915061ed..03ee5a36472b 100644
--- a/drivers/net/ethernet/pensando/ionic/ionic_regs.h
+++ b/drivers/net/ethernet/pensando/ionic/ionic_regs.h
@@ -22,6 +22,9 @@ struct ionic_intr {
u32 rsvd[3];
};
+#define IONIC_INTR_CTRL_REGS_MAX 2048
+#define IONIC_INTR_CTRL_COAL_MAX 0x3F
+
/** enum ionic_intr_mask_vals - valid values for mask and mask_assert.
* @IONIC_INTR_MASK_CLEAR: unmask interrupt.
* @IONIC_INTR_MASK_SET: mask interrupt.
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.