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NFC: hci: Add pipes table to reference them with a tuple {gate, host}

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In order to keep host source information on specific hci event (such as
evt_connectivity or evt_transaction) and because 2 pipes can be connected
to the same gate, it is necessary to add a table referencing every pipe
with a {gate, host} tuple.

Signed-off-by: Christophe Ricard <christophe-h.ricard@st.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
This commit is contained in:
Christophe Ricard 2015-01-27 01:18:12 +01:00 committed by Samuel Ortiz
parent fda7a49cb9
commit 118278f20a
3 changed files with 47 additions and 8 deletions
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13
include/net/nfc/hci.h
View File

@ -63,8 +63,10 @@ struct nfc_hci_ops {
};
/* Pipes */
#define NFC_HCI_INVALID_PIPE 0x80
#define NFC_HCI_DO_NOT_CREATE_PIPE 0x81
#define NFC_HCI_INVALID_PIPE 0x80
#define NFC_HCI_INVALID_GATE 0xFF
#define NFC_HCI_INVALID_HOST 0x80
#define NFC_HCI_LINK_MGMT_PIPE 0x00
#define NFC_HCI_ADMIN_PIPE 0x01
@ -73,7 +75,13 @@ struct nfc_hci_gate {
u8 pipe;
};
struct nfc_hci_pipe {
u8 gate;
u8 dest_host;
};
#define NFC_HCI_MAX_CUSTOM_GATES 50
#define NFC_HCI_MAX_PIPES 127
struct nfc_hci_init_data {
u8 gate_count;
struct nfc_hci_gate gates[NFC_HCI_MAX_CUSTOM_GATES];
@ -125,6 +133,7 @@ struct nfc_hci_dev {
void *clientdata;
u8 gate2pipe[NFC_HCI_MAX_GATES];
struct nfc_hci_pipe pipes[NFC_HCI_MAX_PIPES];
u8 sw_romlib;
u8 sw_patch;
@ -167,6 +176,8 @@ void *nfc_hci_get_clientdata(struct nfc_hci_dev *hdev);
void nfc_hci_driver_failure(struct nfc_hci_dev *hdev, int err);
int nfc_hci_result_to_errno(u8 result);
void nfc_hci_reset_pipes(struct nfc_hci_dev *dev);
void nfc_hci_reset_pipes_per_host(struct nfc_hci_dev *hdev, u8 host);
/* Host IDs */
#define NFC_HCI_HOST_CONTROLLER_ID 0x00

6
net/nfc/hci/command.c
View File

@ -331,7 +331,7 @@ int nfc_hci_disconnect_all_gates(struct nfc_hci_dev *hdev)
if (r < 0)
return r;
memset(hdev->gate2pipe, NFC_HCI_INVALID_PIPE, sizeof(hdev->gate2pipe));
nfc_hci_reset_pipes(hdev);
return 0;
}
@ -345,7 +345,7 @@ int nfc_hci_connect_gate(struct nfc_hci_dev *hdev, u8 dest_host, u8 dest_gate,
pr_debug("\n");
if (hdev->gate2pipe[dest_gate] == NFC_HCI_DO_NOT_CREATE_PIPE)
if (pipe == NFC_HCI_DO_NOT_CREATE_PIPE)
return 0;
if (hdev->gate2pipe[dest_gate] != NFC_HCI_INVALID_PIPE)
@ -380,6 +380,8 @@ int nfc_hci_connect_gate(struct nfc_hci_dev *hdev, u8 dest_host, u8 dest_gate,
return r;
}
hdev->pipes[pipe].gate = dest_gate;
hdev->pipes[pipe].dest_host = dest_host;
hdev->gate2pipe[dest_gate] = pipe;
return 0;

36
net/nfc/hci/core.c
View File

@ -46,6 +46,32 @@ int nfc_hci_result_to_errno(u8 result)
}
EXPORT_SYMBOL(nfc_hci_result_to_errno);
void nfc_hci_reset_pipes(struct nfc_hci_dev *hdev)
{
int i = 0;
for (i = 0; i < NFC_HCI_MAX_PIPES; i++) {
hdev->pipes[i].gate = NFC_HCI_INVALID_GATE;
hdev->pipes[i].dest_host = NFC_HCI_INVALID_HOST;
}
memset(hdev->gate2pipe, NFC_HCI_INVALID_PIPE, sizeof(hdev->gate2pipe));
}
EXPORT_SYMBOL(nfc_hci_reset_pipes);
void nfc_hci_reset_pipes_per_host(struct nfc_hci_dev *hdev, u8 host)
{
int i = 0;
for (i = 0; i < NFC_HCI_MAX_PIPES; i++) {
if (hdev->pipes[i].dest_host != host)
continue;
hdev->pipes[i].gate = NFC_HCI_INVALID_GATE;
hdev->pipes[i].dest_host = NFC_HCI_INVALID_HOST;
}
}
EXPORT_SYMBOL(nfc_hci_reset_pipes_per_host);
static void nfc_hci_msg_tx_work(struct work_struct *work)
{
struct nfc_hci_dev *hdev = container_of(work, struct nfc_hci_dev,
@ -168,7 +194,7 @@ void nfc_hci_cmd_received(struct nfc_hci_dev *hdev, u8 pipe, u8 cmd,
struct sk_buff *skb)
{
int r = 0;
u8 gate = nfc_hci_pipe2gate(hdev, pipe);
u8 gate = hdev->pipes[pipe].gate;
u8 local_gate, new_pipe;
u8 gate_opened = 0x00;
@ -330,9 +356,9 @@ void nfc_hci_event_received(struct nfc_hci_dev *hdev, u8 pipe, u8 event,
struct sk_buff *skb)
{
int r = 0;
u8 gate = nfc_hci_pipe2gate(hdev, pipe);
u8 gate = hdev->pipes[pipe].gate;
if (gate == 0xff) {
if (gate == NFC_HCI_INVALID_GATE) {
pr_err("Discarded event %x to unopened pipe %x\n", event, pipe);
goto exit;
}
@ -573,7 +599,7 @@ static int hci_dev_down(struct nfc_dev *nfc_dev)
if (hdev->ops->close)
hdev->ops->close(hdev);
memset(hdev->gate2pipe, NFC_HCI_INVALID_PIPE, sizeof(hdev->gate2pipe));
nfc_hci_reset_pipes(hdev);
return 0;
}
@ -932,7 +958,7 @@ struct nfc_hci_dev *nfc_hci_allocate_device(struct nfc_hci_ops *ops,
nfc_set_drvdata(hdev->ndev, hdev);
memset(hdev->gate2pipe, NFC_HCI_INVALID_PIPE, sizeof(hdev->gate2pipe));
nfc_hci_reset_pipes(hdev);
hdev->quirks = quirks;