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A few more code tweaks and comment typo fixes in the EHCI driver.

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This commit is contained in:
Martin Whitaker 2022-01-28 19:55:31 +00:00
parent 8509e3320a
commit 01365ab2e7
1 changed files with 16 additions and 10 deletions
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26
system/ehci.c
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@ -24,7 +24,7 @@
// Basic limits
#define EHCI_MAX_PFL_LENGTH 1024 // Maximum number of entries in periodic frame list
#define EHCI_MAX_PFL_LENGTH 1024 // Maximum number of entries in periodic frame list
// Extended capability IDs
@ -96,8 +96,8 @@
// - control member (8 bits)
#define EHCI_QTD_PID_OUT (0 << 0) // PID Code is IN
#define EHCI_QTD_PID_IN (1 << 0) // PID Code is OUT
#define EHCI_QTD_PID_OUT (0 << 0) // PID Code is OUT
#define EHCI_QTD_PID_IN (1 << 0) // PID Code is IN
#define EHCI_QTD_PID_SETUP (2 << 0) // PID Code is SETUP
#define EHCI_QTD_CERR(n) ((n) << 2) // Error Counter = n (n = 1..3)
@ -107,7 +107,7 @@
#define EHCI_QTD_IOC_N (0 << 7) // Interrupt On Completion is off
#define EHCI_QTD_IOC_Y (1 << 7) // Interrupt On Completion is on
// = data_length member (16 bits)
// - data_length member (16 bits)
#define EHCI_QTD_DT(n) ((n) << 15) // Data Toggle = n (n = 0,1)
@ -177,14 +177,20 @@ typedef volatile struct {
uint32_t buffer_ptr[5];
uint32_t ext_buffer_ptr[5];
uint32_t padding[3];
} ehci_qtd_t;
} ehci_qtd_t __attribute__ ((aligned (32)));
typedef volatile struct {
uint32_t next_qhd_ptr;
uint32_t epcc[2];
uint32_t current_qtd_ptr;
ehci_qtd_t qtd;
uint32_t padding[4];
uint32_t next_qtd_ptr;
uint32_t alt_next_qtd_ptr;
uint8_t status;
uint8_t control;
uint16_t data_length;
uint32_t buffer_ptr[5];
uint32_t ext_buffer_ptr[5];
uint32_t padding[7];
} ehci_qhd_t __attribute__ ((aligned (32)));
// Data structures specific to this implementation.
@ -196,7 +202,7 @@ typedef struct {
ehci_qhd_t qhd[WS_QHD_SIZE];
ehci_qtd_t qtd[WS_QTD_SIZE];
// Keyboad data transfer buffers.
// Keyboard data transfer buffers.
hid_kbd_rpt_t kbd_rpt[MAX_KEYBOARDS];
// Pointer to the host controller registers.
@ -350,7 +356,7 @@ static void build_ehci_qhd(ehci_qhd_t *qhd, const ehci_qtd_t *qtd, const usb_ep_
qhd->epcc[0] |= EHCI_QH_HRL;
}
qhd->qtd.next_qtd_ptr = (uintptr_t)qtd;
qhd->next_qtd_ptr = (uintptr_t)qtd;
}
static uint32_t get_ehci_done(const workspace_t *ws)
@ -460,7 +466,7 @@ static uint8_t get_keycode(const usb_hcd_t *hcd)
build_ehci_qtd(kbd_qtd, kbd_qtd, EHCI_QTD_PID_IN | EHCI_QTD_IOC_Y, EHCI_QTD_DT(0), kbd_rpt, sizeof(hid_kbd_rpt_t));
ehci_qhd_t *kbd_qhd = &ws->qhd[1 + kbd_idx];
kbd_qhd->qtd.next_qtd_ptr = (uintptr_t)kbd_qtd;
kbd_qhd->next_qtd_ptr = (uintptr_t)kbd_qtd;
}
}