target/linux/generic/backport-6.1/855-v6.6-bus-mhi-host-pci_generic-Add-support-for-IP_SW0-chan.patch

   1 From 440b01a2a9a62352cfa355354d3a4de6c5d96adf Mon Sep 17 00:00:00 2001
   2 From: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
   3 Date: Fri, 19 May 2023 19:28:03 +0530
   4 Subject: [PATCH 06/13] bus: mhi: host: pci_generic: Add support for IP_SW0
   5  channels
   6
   7 IP_SW0 channels are used to transfer data over the networking interface
   8 between MHI endpoint and the host. Define the channels in the MHI v1
   9 channel config along with dedicated event rings.
  10
  11 Reviewed-by: Loic Poulain <loic.poulain@linaro.org>
  12 Link: https://lore.kernel.org/r/20230519135803.13850-1-manivannan.sadhasivam@linaro.org
  13 Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
  14 ---
  15  drivers/bus/mhi/host/pci_generic.c | 26 ++++++++++++++++++++++----
  16  1 file changed, 22 insertions(+), 4 deletions(-)
  17
  18 --- a/drivers/bus/mhi/host/pci_generic.c
  19 +++ b/drivers/bus/mhi/host/pci_generic.c
  20 @@ -212,6 +212,19 @@ struct mhi_pci_dev_info {
  21                 .offload_channel = false,       \
  22         }
  23
  24 +#define MHI_EVENT_CONFIG_SW_DATA(ev_ring, el_count) \
  25 +       {                                       \
  26 +               .num_elements = el_count,       \
  27 +               .irq_moderation_ms = 0,         \
  28 +               .irq = (ev_ring) + 1,           \
  29 +               .priority = 1,                  \
  30 +               .mode = MHI_DB_BRST_DISABLE,    \
  31 +               .data_type = MHI_ER_DATA,       \
  32 +               .hardware_event = false,        \
  33 +               .client_managed = false,        \
  34 +               .offload_channel = false,       \
  35 +       }
  36 +
  37  #define MHI_EVENT_CONFIG_HW_DATA(ev_ring, el_count, ch_num) \
  38         {                                       \
  39                 .num_elements = el_count,       \
  40 @@ -237,8 +250,10 @@ static const struct mhi_channel_config m
  41         MHI_CHANNEL_CONFIG_DL_AUTOQUEUE(21, "IPCR", 8, 0),
  42         MHI_CHANNEL_CONFIG_UL_FP(34, "FIREHOSE", 32, 0),
  43         MHI_CHANNEL_CONFIG_DL_FP(35, "FIREHOSE", 32, 0),
  44 -       MHI_CHANNEL_CONFIG_HW_UL(100, "IP_HW0", 128, 2),
  45 -       MHI_CHANNEL_CONFIG_HW_DL(101, "IP_HW0", 128, 3),
  46 +       MHI_CHANNEL_CONFIG_UL(46, "IP_SW0", 64, 2),
  47 +       MHI_CHANNEL_CONFIG_DL(47, "IP_SW0", 64, 3),
  48 +       MHI_CHANNEL_CONFIG_HW_UL(100, "IP_HW0", 128, 4),
  49 +       MHI_CHANNEL_CONFIG_HW_DL(101, "IP_HW0", 128, 5),
  50  };
  51
  52  static struct mhi_event_config modem_qcom_v1_mhi_events[] = {
  53 @@ -246,9 +261,12 @@ static struct mhi_event_config modem_qco
  54         MHI_EVENT_CONFIG_CTRL(0, 64),
  55         /* DIAG dedicated event ring */
  56         MHI_EVENT_CONFIG_DATA(1, 128),
  57 +       /* Software channels dedicated event ring */
  58 +       MHI_EVENT_CONFIG_SW_DATA(2, 64),
  59 +       MHI_EVENT_CONFIG_SW_DATA(3, 64),
  60         /* Hardware channels request dedicated hardware event rings */
  61 -       MHI_EVENT_CONFIG_HW_DATA(2, 1024, 100),
  62 -       MHI_EVENT_CONFIG_HW_DATA(3, 2048, 101)
  63 +       MHI_EVENT_CONFIG_HW_DATA(4, 1024, 100),
  64 +       MHI_EVENT_CONFIG_HW_DATA(5, 2048, 101)
  65  };
  66
  67  static const struct mhi_controller_config modem_qcom_v1_mhiv_config = {