diff options
Diffstat (limited to 'target/linux/at91-2.6/patches-2.6.21/012-at91-mmcfix.patch')
| -rw-r--r-- | target/linux/at91-2.6/patches-2.6.21/012-at91-mmcfix.patch | 424 |
1 files changed, 0 insertions, 424 deletions
diff --git a/target/linux/at91-2.6/patches-2.6.21/012-at91-mmcfix.patch b/target/linux/at91-2.6/patches-2.6.21/012-at91-mmcfix.patch deleted file mode 100644 index e8991ae61..000000000 --- a/target/linux/at91-2.6/patches-2.6.21/012-at91-mmcfix.patch +++ /dev/null @@ -1,424 +0,0 @@ ---- linux-2.6.21.1.old/drivers/mmc/at91_mci.c 2007-06-05 09:08:57.000000000 +0200 -+++ linux-2.6.21.1/drivers/mmc/at91_mci.c 2007-06-05 10:59:11.000000000 +0200 -@@ -79,7 +79,8 @@ - - #define DRIVER_NAME "at91_mci" - --#undef SUPPORT_4WIRE -+//#undef SUPPORT_4WIRE -+#define SUPPORT_4WIRE - - #define FL_SENT_COMMAND (1 << 0) - #define FL_SENT_STOP (1 << 1) -@@ -132,7 +133,7 @@ - /* - * Copy from sg to a dma block - used for transfers - */ --static inline void at91mci_sg_to_dma(struct at91mci_host *host, struct mmc_data *data) -+static inline void at91_mci_sg_to_dma(struct at91mci_host *host, struct mmc_data *data) - { - unsigned int len, i, size; - unsigned *dmabuf = host->buffer; -@@ -181,7 +182,7 @@ - /* - * Prepare a dma read - */ --static void at91mci_pre_dma_read(struct at91mci_host *host) -+static void at91_mci_pre_dma_read(struct at91mci_host *host) - { - int i; - struct scatterlist *sg; -@@ -249,23 +250,24 @@ - /* - * Handle after a dma read - */ --static void at91mci_post_dma_read(struct at91mci_host *host) -+static int at91_mci_post_dma_read(struct at91mci_host *host) - { - struct mmc_command *cmd; - struct mmc_data *data; -+ int completed = 0; - - pr_debug("post dma read\n"); - - cmd = host->cmd; - if (!cmd) { - pr_debug("no command\n"); -- return; -+ return 1; - } - - data = cmd->data; - if (!data) { - pr_debug("no data\n"); -- return; -+ return 1; - } - - while (host->in_use_index < host->transfer_index) { -@@ -300,39 +302,14 @@ - - /* Is there another transfer to trigger? */ - if (host->transfer_index < data->sg_len) -- at91mci_pre_dma_read(host); -+ at91_mci_pre_dma_read(host); - else { -+ at91_mci_write(host, AT91_MCI_IDR, AT91_MCI_ENDRX); - at91_mci_write(host, AT91_MCI_IER, AT91_MCI_RXBUFF); -- at91_mci_write(host, ATMEL_PDC_PTCR, ATMEL_PDC_RXTDIS | ATMEL_PDC_TXTDIS); - } - - pr_debug("post dma read done\n"); --} -- --/* -- * Handle transmitted data -- */ --static void at91_mci_handle_transmitted(struct at91mci_host *host) --{ -- struct mmc_command *cmd; -- struct mmc_data *data; -- -- pr_debug("Handling the transmit\n"); -- -- /* Disable the transfer */ -- at91_mci_write(host, ATMEL_PDC_PTCR, ATMEL_PDC_RXTDIS | ATMEL_PDC_TXTDIS); -- -- /* Now wait for cmd ready */ -- at91_mci_write(host, AT91_MCI_IDR, AT91_MCI_TXBUFE); -- at91_mci_write(host, AT91_MCI_IER, AT91_MCI_NOTBUSY); -- -- cmd = host->cmd; -- if (!cmd) return; -- -- data = cmd->data; -- if (!data) return; -- -- data->bytes_xfered = host->total_length; -+ return completed; - } - - /* -@@ -340,10 +317,17 @@ - */ - static void at91_mci_enable(struct at91mci_host *host) - { -+ unsigned int mr; -+ - at91_mci_write(host, AT91_MCI_CR, AT91_MCI_MCIEN); - at91_mci_write(host, AT91_MCI_IDR, 0xffffffff); - at91_mci_write(host, AT91_MCI_DTOR, AT91_MCI_DTOMUL_1M | AT91_MCI_DTOCYC); -- at91_mci_write(host, AT91_MCI_MR, AT91_MCI_PDCMODE | 0x34a); -+ mr = AT91_MCI_PDCMODE | 0x34a; -+ -+ if (cpu_is_at91sam9260() || cpu_is_at91sam9263()) -+ mr |= AT91_MCI_RDPROOF | AT91_MCI_WRPROOF; -+ -+ at91_mci_write(host, AT91_MCI_MR, mr); - - /* use Slot A or B (only one at same time) */ - at91_mci_write(host, AT91_MCI_SDCR, host->board->slot_b); -@@ -359,9 +343,8 @@ - - /* - * Send a command -- * return the interrupts to enable - */ --static unsigned int at91_mci_send_command(struct at91mci_host *host, struct mmc_command *cmd) -+static void at91_mci_send_command(struct at91mci_host *host, struct mmc_command *cmd) - { - unsigned int cmdr, mr; - unsigned int block_length; -@@ -372,8 +355,7 @@ - - host->cmd = cmd; - -- /* Not sure if this is needed */ --#if 0 -+ /* Needed for leaving busy state before CMD1 */ - if ((at91_mci_read(host, AT91_MCI_SR) & AT91_MCI_RTOE) && (cmd->opcode == 1)) { - pr_debug("Clearing timeout\n"); - at91_mci_write(host, AT91_MCI_ARGR, 0); -@@ -383,7 +365,7 @@ - pr_debug("Clearing: SR = %08X\n", at91_mci_read(host, AT91_MCI_SR)); - } - } --#endif -+ - cmdr = cmd->opcode; - - if (mmc_resp_type(cmd) == MMC_RSP_NONE) -@@ -440,50 +422,48 @@ - at91_mci_write(host, ATMEL_PDC_TCR, 0); - at91_mci_write(host, ATMEL_PDC_TNPR, 0); - at91_mci_write(host, ATMEL_PDC_TNCR, 0); -+ ier = AT91_MCI_CMDRDY; -+ } else { -+ /* zero block length in PDC mode */ -+ mr = at91_mci_read(host, AT91_MCI_MR) & 0x7fff; -+ at91_mci_write(host, AT91_MCI_MR, mr | (block_length << 16) | AT91_MCI_PDCMODE); -+ -+ /* -+ * Disable the PDC controller -+ */ -+ at91_mci_write(host, ATMEL_PDC_PTCR, ATMEL_PDC_RXTDIS | ATMEL_PDC_TXTDIS); - -- at91_mci_write(host, AT91_MCI_ARGR, cmd->arg); -- at91_mci_write(host, AT91_MCI_CMDR, cmdr); -- return AT91_MCI_CMDRDY; -- } -- -- mr = at91_mci_read(host, AT91_MCI_MR) & 0x7fff; /* zero block length and PDC mode */ -- at91_mci_write(host, AT91_MCI_MR, mr | (block_length << 16) | AT91_MCI_PDCMODE); -- -- /* -- * Disable the PDC controller -- */ -- at91_mci_write(host, ATMEL_PDC_PTCR, ATMEL_PDC_RXTDIS | ATMEL_PDC_TXTDIS); -- -- if (cmdr & AT91_MCI_TRCMD_START) { -- data->bytes_xfered = 0; -- host->transfer_index = 0; -- host->in_use_index = 0; -- if (cmdr & AT91_MCI_TRDIR) { -- /* -- * Handle a read -- */ -- host->buffer = NULL; -- host->total_length = 0; -+ if (cmdr & AT91_MCI_TRCMD_START) { -+ data->bytes_xfered = 0; -+ host->transfer_index = 0; -+ host->in_use_index = 0; -+ if (cmdr & AT91_MCI_TRDIR) { -+ /* -+ * Handle a read -+ */ -+ host->buffer = NULL; -+ host->total_length = 0; - -- at91mci_pre_dma_read(host); -- ier = AT91_MCI_ENDRX /* | AT91_MCI_RXBUFF */; -- } -- else { -- /* -- * Handle a write -- */ -- host->total_length = block_length * blocks; -- host->buffer = dma_alloc_coherent(NULL, -- host->total_length, -- &host->physical_address, GFP_KERNEL); -- -- at91mci_sg_to_dma(host, data); -- -- pr_debug("Transmitting %d bytes\n", host->total_length); -- -- at91_mci_write(host, ATMEL_PDC_TPR, host->physical_address); -- at91_mci_write(host, ATMEL_PDC_TCR, host->total_length / 4); -- ier = AT91_MCI_TXBUFE; -+ at91_mci_pre_dma_read(host); -+ ier = AT91_MCI_ENDRX /* | AT91_MCI_RXBUFF */; -+ } -+ else { -+ /* -+ * Handle a write -+ */ -+ host->total_length = block_length * blocks; -+ host->buffer = dma_alloc_coherent(NULL, -+ host->total_length, -+ &host->physical_address, GFP_KERNEL); -+ -+ at91_mci_sg_to_dma(host, data); -+ -+ pr_debug("Transmitting %d bytes\n", host->total_length); -+ -+ at91_mci_write(host, ATMEL_PDC_TPR, host->physical_address); -+ at91_mci_write(host, ATMEL_PDC_TCR, host->total_length / 4); -+ ier = AT91_MCI_CMDRDY; -+ } - } - } - -@@ -498,39 +478,24 @@ - if (cmdr & AT91_MCI_TRCMD_START) { - if (cmdr & AT91_MCI_TRDIR) - at91_mci_write(host, ATMEL_PDC_PTCR, ATMEL_PDC_RXTEN); -- else -- at91_mci_write(host, ATMEL_PDC_PTCR, ATMEL_PDC_TXTEN); - } -- return ier; --} - --/* -- * Wait for a command to complete -- */ --static void at91mci_process_command(struct at91mci_host *host, struct mmc_command *cmd) --{ -- unsigned int ier; -- -- ier = at91_mci_send_command(host, cmd); -- -- pr_debug("setting ier to %08X\n", ier); -- -- /* Stop on errors or the required value */ -+ /* Enable selected interrupts */ - at91_mci_write(host, AT91_MCI_IER, AT91_MCI_ERRORS | ier); - } - - /* - * Process the next step in the request - */ --static void at91mci_process_next(struct at91mci_host *host) -+static void at91_mci_process_next(struct at91mci_host *host) - { - if (!(host->flags & FL_SENT_COMMAND)) { - host->flags |= FL_SENT_COMMAND; -- at91mci_process_command(host, host->request->cmd); -+ at91_mci_send_command(host, host->request->cmd); - } - else if ((!(host->flags & FL_SENT_STOP)) && host->request->stop) { - host->flags |= FL_SENT_STOP; -- at91mci_process_command(host, host->request->stop); -+ at91_mci_send_command(host, host->request->stop); - } - else - mmc_request_done(host->mmc, host->request); -@@ -539,7 +504,7 @@ - /* - * Handle a command that has been completed - */ --static void at91mci_completed_command(struct at91mci_host *host) -+static void at91_mci_completed_command(struct at91mci_host *host) - { - struct mmc_command *cmd = host->cmd; - unsigned int status; -@@ -583,7 +548,7 @@ - else - cmd->error = MMC_ERR_NONE; - -- at91mci_process_next(host); -+ at91_mci_process_next(host); - } - - /* -@@ -595,7 +560,60 @@ - host->request = mrq; - host->flags = 0; - -- at91mci_process_next(host); -+ at91_mci_process_next(host); -+} -+ -+/* -+ * Handle transmitted data -+ */ -+static void at91_mci_handle_transmitted(struct at91mci_host *host) -+{ -+ struct mmc_command *cmd; -+ struct mmc_data *data; -+ -+ pr_debug("Handling the transmit\n"); -+ -+ /* Disable the transfer */ -+ at91_mci_write(host, ATMEL_PDC_PTCR, ATMEL_PDC_RXTDIS | ATMEL_PDC_TXTDIS); -+ -+ /* Now wait for cmd ready */ -+ at91_mci_write(host, AT91_MCI_IDR, AT91_MCI_TXBUFE); -+ -+ cmd = host->cmd; -+ if (!cmd) return; -+ -+ data = cmd->data; -+ if (!data) return; -+ -+ if (cmd->opcode == MMC_WRITE_MULTIPLE_BLOCK) { -+ pr_debug("multiple write : wait for BLKE...\n"); -+ at91_mci_write(host, AT91_MCI_IER, AT91_MCI_BLKE); -+ } else -+ at91_mci_write(host, AT91_MCI_IER, AT91_MCI_NOTBUSY); -+ -+ data->bytes_xfered = host->total_length; -+} -+ -+ -+/*Handle after command sent ready*/ -+static int at91_mci_handle_cmdrdy(struct at91mci_host *host) -+{ -+ if (!host->cmd) -+ return 1; -+ else if (!host->cmd->data) { -+ if (host->flags & FL_SENT_STOP) { -+ /*After multi block write, we mus wait for NOTBUSY*/ -+ at91_mci_write(host, AT91_MCI_IER, AT91_MCI_NOTBUSY); -+ } else return 1; -+ } else if (host->cmd->data->flags & MMC_DATA_WRITE) { -+ /*After sending multi-block-write command, start DMA transfer*/ -+ at91_mci_write(host, AT91_MCI_IER, AT91_MCI_TXBUFE); -+ at91_mci_write(host, AT91_MCI_IER, AT91_MCI_BLKE); -+ at91_mci_write(host, ATMEL_PDC_PTCR, ATMEL_PDC_TXTEN); -+ } -+ -+ /* command not completed, have to wait */ -+ return 0; - } - - /* -@@ -698,29 +716,33 @@ - at91_mci_handle_transmitted(host); - } - -+ if (int_status & AT91_MCI_ENDRX) { -+ pr_debug("ENDRX\n"); -+ at91_mci_post_dma_read(host); -+ } -+ - if (int_status & AT91_MCI_RXBUFF) { - pr_debug("RX buffer full\n"); -- at91_mci_write(host, AT91_MCI_IER, AT91_MCI_CMDRDY); -+ at91_mci_write(host, ATMEL_PDC_PTCR, ATMEL_PDC_RXTDIS | ATMEL_PDC_TXTDIS); -+ at91_mci_write(host, AT91_MCI_IDR, AT91_MCI_RXBUFF | AT91_MCI_ENDRX); -+ completed = 1; - } - - if (int_status & AT91_MCI_ENDTX) - pr_debug("Transmit has ended\n"); - -- if (int_status & AT91_MCI_ENDRX) { -- pr_debug("Receive has ended\n"); -- at91mci_post_dma_read(host); -- } -- - if (int_status & AT91_MCI_NOTBUSY) { - pr_debug("Card is ready\n"); -- at91_mci_write(host, AT91_MCI_IER, AT91_MCI_CMDRDY); -+ completed = 1; - } - - if (int_status & AT91_MCI_DTIP) - pr_debug("Data transfer in progress\n"); - -- if (int_status & AT91_MCI_BLKE) -+ if (int_status & AT91_MCI_BLKE) { - pr_debug("Block transfer has ended\n"); -+ completed = 1; -+ } - - if (int_status & AT91_MCI_TXRDY) - pr_debug("Ready to transmit\n"); -@@ -730,14 +752,14 @@ - - if (int_status & AT91_MCI_CMDRDY) { - pr_debug("Command ready\n"); -- completed = 1; -+ completed = at91_mci_handle_cmdrdy(host); - } - } - - if (completed) { - pr_debug("Completed command\n"); - at91_mci_write(host, AT91_MCI_IDR, 0xffffffff); -- at91mci_completed_command(host); -+ at91_mci_completed_command(host); - } else - at91_mci_write(host, AT91_MCI_IDR, int_status); - |