diff options
| author | Mathias Nyman <mathias.nyman@linux.intel.com> | 2023-02-02 18:04:55 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-02-02 18:44:41 +0300 |
| commit | 8c1cbec9db1ab044167a7594c88bb5906c9d3ee4 (patch) | |
| tree | 6857f71a310775fa6d3e65f7d331b446564519fb /drivers/usb/host | |
| parent | 130c4dcbe8c79595a6ca2e69be9f01411201aa92 (diff) | |
| download | linux-8c1cbec9db1ab044167a7594c88bb5906c9d3ee4.tar.xz | |
xhci: fix event ring segment table related masks and variables in header
xHC controller can supports up to 1024 interrupters.
To fit these change the max_interrupters varable from u8 to u16.
Add a separate mask for the reserve and preserve bits [5:0] in the erst
base register and use it instead of the ERST_PRT_MASK.
ERSR_PTR_MASK [3:0] is intended for masking bits in the
event ring dequeue pointer register.
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://lore.kernel.org/r/20230202150505.618915-2-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/host')
| -rw-r--r-- | drivers/usb/host/xhci-mem.c | 4 | ||||
| -rw-r--r-- | drivers/usb/host/xhci.h | 5 |
2 files changed, 6 insertions, 3 deletions
diff --git a/drivers/usb/host/xhci-mem.c b/drivers/usb/host/xhci-mem.c index 81ca2bc1f0be..679befa97c7a 100644 --- a/drivers/usb/host/xhci-mem.c +++ b/drivers/usb/host/xhci-mem.c @@ -2529,8 +2529,8 @@ int xhci_mem_init(struct xhci_hcd *xhci, gfp_t flags) "// Set ERST base address for ir_set 0 = 0x%llx", (unsigned long long)xhci->erst.erst_dma_addr); val_64 = xhci_read_64(xhci, &xhci->ir_set->erst_base); - val_64 &= ERST_PTR_MASK; - val_64 |= (xhci->erst.erst_dma_addr & (u64) ~ERST_PTR_MASK); + val_64 &= ERST_BASE_RSVDP; + val_64 |= (xhci->erst.erst_dma_addr & (u64) ~ERST_BASE_RSVDP); xhci_write_64(xhci, val_64, &xhci->ir_set->erst_base); /* Set the event ring dequeue address */ diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h index 7547037b57bf..0dd92f9089fe 100644 --- a/drivers/usb/host/xhci.h +++ b/drivers/usb/host/xhci.h @@ -513,6 +513,9 @@ struct xhci_intr_reg { /* Preserve bits 16:31 of erst_size */ #define ERST_SIZE_MASK (0xffff << 16) +/* erst_base bitmasks */ +#define ERST_BASE_RSVDP (0x3f) + /* erst_dequeue bitmasks */ /* Dequeue ERST Segment Index (DESI) - Segment number (or alias) * where the current dequeue pointer lies. This is an optional HW hint. @@ -1774,7 +1777,7 @@ struct xhci_hcd { u8 sbrn; u16 hci_version; u8 max_slots; - u8 max_interrupters; + u16 max_interrupters; u8 max_ports; u8 isoc_threshold; /* imod_interval in ns (I * 250ns) */ |